Class / Patent application number | Description | Number of patent applications / Date published |
526075000 | Including step of synthesis of monomer or pre-polymer | 80 |
20080227933 | Method For Producing Water-Absorbing Polymers - The invention relates to a process for preparing water-absorbing polymers by polymerizing a monomer solution, wherein the oxygen content of the monomer solution has been reduced by addition of at least one reducing agent before the polymerization. | 09-18-2008 |
20080227934 | Methods for Recovering Activity of Molecular Sieve Catalysts - The invention is directed to a method of rejuvenating silicoaluminophosphate molecular sieve catalyst that has been deactivated hydrothermally as well as a method of using the rejuvenated catalyst to make an olefin product from an oxygenate feed. In particular, the invention is directed to rejuvenating the catalyst by contacting it with warm water, ammonium salts, dilute acids or low pressure steam until the catalytic activity level of the catalyst has been increased to the desired extent. | 09-18-2008 |
20080269436 | Molecular sieve catalyst composition, its making and use in conversion processes - The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to making a formulated molecular sieve catalyst composition from a slurry of formulation composition of a synthesized molecular sieve that has not been fully dried, a binder and an optional matrix material. In a more preferred embodiment, the weight ratio of the binder to the molecular sieve and/or the solid content of the slurry is controlled to provide an improved attrition resistant catalyst composition, particularly useful in a conversion process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock. | 10-30-2008 |
20080287616 | Process for Production of (Meth)Acrylic Acid with High Boiling Fraction Work-Up By Means of Crystallization - A process for production of (meth)acrylic acid is disclosed. The process includes synthesizing and distillatively working-up a crude (meth)acrylic acid phase to obtain a (meth)acrylic acid phase and a dimer phase including (meth)acrylic acid dimers and/or (meth)acrylic acid oligomers. At least a part of the (meth)acrylic acid dimers and/or of the (meth)acrylic acid oligomers from the dimer phase is split to obtain a (meth)acrylic acid including a low-boiling phase and a high-boiling phase including less (meth)acrylic acid than the low-boiling phase. At least a part of the (meth)acrylic acid from the low-boiling phase is separated by forming of one or more crystals to obtain a pure (meth)acrylic acid and a residue. Also disclosed is a device for production of (meth)acrylic acid, a process for production of a polymer as well as chemical products based on or including (meth)acrylic acid or a polymer as well as the use of (meth)acrylic acid or polymers in chemical products. | 11-20-2008 |
20090082530 | Catalytic process for producing ethylene and carbon monoxide mixtures from ethane - A method for producing a mixture of ethylene and carbon monoxide by contacting ethane and an oxygen source with a catalyst comprising iron oxide supported on an inorganic material to produce ethylene and carbon monoxide. A method for producing an alkyl propionate by steps of: (a) contacting ethane and an oxygen source at a temperature of at least 600° C. to produce ethylene; (b) contacting an alcohol, ethylene and carbon monoxide with an ethylene carbonylation catalyst to produce the alkyl propionate; and (c) separating the alkyl propionate from byproducts and starting materials. The method further comprises condensing the alkyl propionate with formaldehyde to produce an alkyl methacrylate. | 03-26-2009 |
20090088540 | Monomer Solution for Producing Polycarbonate - A non-reactive monomer mixture is formed from a dihydroxy component having one or more dihydroxy compounds dissolved in a melted diaryl carbonate. The dihydroxy component has less than 600 ppb alkali metal, an acid stabilizer, or both less than 600 ppb alkali metal and an acid stabilizer. The dihydroxy compounds of the dihydroxy component and the diaryl carbonate are present in a mole ratio of from 0.9 to 1.1. The monomer mixture is at a temperature between the saturation point of the monomer mixture and the highest melting temperature of the individual dihydroxy compounds. The non-reactive monomer mixture can be stored and transported and then polymerized to form polycarbonate upon addition of a catalyst. | 04-02-2009 |
20090176947 | Methods for preparing polymers from phenolic materials and compositions relating thereto - A process for producing a stable polymer such as poly(hydroxystyrene) which comprises the decarboxylation of a corresponding phenolic in the presence of a non-amine basic catalyst and a polar organic solvent, followed by the polymerization thereof. | 07-09-2009 |
20090192276 | Methods Addressing Aging In Flocculated Molecular Sieve Catalysts For Hydrocarbon Conversion Processes - One aspect of the invention relates to a method for formulating a molecular sieve catalyst composition, the method comprising the steps of: (a) providing a synthesized molecular sieve having been recovered in the presence of a flocculant; (b) thermally treating the synthesized molecular sieve at a temperature from about 50° C. to about 250° C. and under other conditions sufficient to form a thermally treated synthesized molecular sieve having a first LOI less than 26% and a first micropore surface area; (c) aging the thermally treated synthesized molecular sieve for at least one year; (d) analyzing the aged, thermally treated molecular sieve to determine a second micropore surface area, wherein the second micropore surface area is 3% or less lower than the first micropore surface area; and (e) combining the aged, thermally treated synthesized molecular sieve, a binder, and optionally a matrix material to produce an aged, formulated molecular sieve catalyst composition. | 07-30-2009 |
20090203853 | VINYL POLYMER HAVING A POLAR FUNCTIONAL GROUP, AND PROCESS FOR PRODUCING THE SAME - A first object of the present invention is to provide a vinyl polymer that has a molecular chain into which a structure containing a polar functional group is introduced, and that is useful as a precursor of a graft polymer. A second object of the present invention is to provide a process for producing the vinyl polymer. These objects can be achieved by the present invention providing a vinyl polymer having a polar functional group (X), and further having, at the position of at least one molecular terminal thereof, a group (A) containing a carbon-carbon double bond. | 08-13-2009 |
20090203854 | Process for the manufacture of 1,2-Dichloroethane - Process for the manufacture of 1,2-dichloroethane (DCE) starting from a stream of ethane which is subjected to a catalytic oxydehydrogenation (ODH) producing a gas mixture containing ethylene then dried and subjected to an absorption to be separated into a fraction enriched with the compounds that are lighter than ethylene containing some of the ethylene conveyed to a chlorination reactor R | 08-13-2009 |
20090247715 | Radical polymerizable macrocyclic resin compositions with low polymerization stress - A composition of macrocyclic oligomer with at least one polymerizable group, (meth)acrylate, for example. | 10-01-2009 |
20090270568 | Process for the Manufacture of 1,2-Dichloroethane - Process for the manufacture of 1,2-dichloroethane (DCE) starting from a stream of ethane which is subjected to a catalytic oxydehydrogenation (ODH) thus producing a gas mixture containing ethylene which is then dried and conveyed to a chlorination reactor supplied with a flow of chlorine so that at least 10% of the ethylene is converted to DCE. The stream of products derived from the chlorination reactor is then conveyed to an oxychlorination reactor in which the majority of the balance of ethylene is converted to DCE. | 10-29-2009 |
20090281256 | CATALYST, ITS PREPARATION AND USE - A dehydrogenation catalyst is described that comprises an iron oxide, an alkali metal or compound thereof, and indium or a compound thereof. A process for preparing a dehydrogenation catalyst comprising preparing a mixture of iron oxide, an alkali metal or compound thereof, and indium or a compound thereof is also described. Additionally, a dehydrogenation process using the catalyst and a process for preparing polymers are described. | 11-12-2009 |
20090306313 | Titanium-Nitride Catalyzed Polyester - The present invention relates to methods for making polyethylene terephthalate resin in which a titanium-nitride polycondensation catalyst is introduced prior to or during the initial stages of esterification or transesterification. | 12-10-2009 |
20090318640 | Polymacromonomer And Process For Production Thereof - This invention relates to a polymacromonomer comprising at least one macromonomer and from 0 to 20 wt % of a C | 12-24-2009 |
20100016524 | Process for the Synthesis and Preparation of Polymeric Materials for Use in Optical Applications Such as Plastic Lenses - This invention relates to a process for the preparation of plastic material for use in optical lenses comprising the steps of: a) synthesizing lead acrylate by adding lead monoxide to NaoH, which is stirred to obtain a homogenous mixture, b) adding an inhibitor to such a monomer mixture; c) adding acrylic acid drop wise to such a monomer mixture so as to avoid the formation of by products, d) heating the mixture of step (c) to a temperature of 35 to 45° C. till a white precipitate of lead acrylate is obtained, e) filtering, washing and drying the precipitate, f) subjecting lead acrylate to the step of polymerization by stepwise heating. | 01-21-2010 |
20100022721 | Synthesis Of Chabazite-Containing Molecular Sieves And Their Use In The Conversion Of Oxygenates To Olefins - In a method of synthesizing a mostly CHA-type silicoaluminophosphate sieve, a reaction mixture comprises sources of water, silicon, aluminum, phosphorus, and a template. In one aspect, the inorganic phosphorus and silicon sources are first combined to form a primary mixture that is aged. Then, the aluminum source is added, followed optionally by any organic phosphorus source, and then the template, to form the synthesis mixture. After heating at <10° C./hr to induce crystallization, in this aspect, both the crystallized sieve has an average crystal size ≦1.5 μm and/or is recovered in a yield of ≧10.0 wt %. In another aspect, when the synthesis mixture Si/Al | 01-28-2010 |
20100022722 | Synthesis Of Chabazite-Containing Molecular Sieves And Their Use In The Conversion Of Oxygenates To Olefins - In a method of synthesizing a silicoaluminophosphate molecular sieve having 90+% CHA framework-type character, a reaction mixture is prepared comprising sources of water, silicon, aluminum, and phosphorus, as well as an organic template. In one aspect, the reaction mixture is heated at more than 10° C./hour to a crystallization temperature and is retained at the crystallization temperature or within the crystallization temperature range for a crystallization time from 16 hours to 350 hours to produce the silicoaluminophosphate molecular sieve. In another aspect, the reaction mixture is heated at less than 10° C./hour to a crystallization temperature from about 150° C. to about 225° C. and is then retained there for less than 10 hours to produce the silicoaluminophosphate molecular sieve. The molecular sieve can then be recovered from the reaction mixture and, preferably, used in a hydrocarbon conversion process, such as oxygenates to olefins. | 01-28-2010 |
20100022723 | Synthesis Of Chabazite-Containing Molecular Sieves And Their Use In The Conversion Of Oxygenates To Olefins - In a method of synthesizing a mostly CHA-type silicoaluminophosphate sieve, a reaction mixture comprises sources of water, silicon, aluminum, phosphorus, and a template. In one aspect, when the reaction mixture Si/Al | 01-28-2010 |
20100048839 | Novel method for producing water-soluble comb-shaped copolymers - The invention relates to a method for producing a comb-shaped copolymer whose skeleton is of an acrylamide, acrylic acid, acryloyl aminoethanol or dimethyl acrylamide type and on which poly(N-alkyl acrylamide) or poly(N,N-5 dialkyl acrylamide lateral segments are grafted. Said method is characterised in that it consists (a) in producing a telomer poly(N-alkyl acrylamide) or poly(N,N-dialkyl acrylamide) of formula (I) H | 02-25-2010 |
20100069583 | PROCESS FOR PRODUCING ACRYLIC ACID, APPARATUS FOR PRODUCING ACRYLIC ACID, AND COMPOSITION FOR PRODUCING ACRYLIC ACID - There are provided a process, an apparatus, and an acrolein-containing composition, for producing acrylic acid from the acrolein-containing composition at a high yield. The process for producing acrylic acid includes a refinement step of removing phenol and/or 1-hydroxyacetone from an acrolein-containing composition and an oxidation step of oxidizing acrolein in the acrolein-containing composition after the refinement step to produce acrylic acid, and the apparatus to be used in the process includes a refiner to be used in the refinement step and an oxidation reactor for oxidizing acrolein to produce acrylic acid. The acrolein-containing composition is a composition having a (mass of phenol)/(mass of acrolein) ratio of 0.020 or lower and a (mass of 1-hydroxyacetone)/(mass of acrolein) ratio of 0.020 or lower. | 03-18-2010 |
20100184929 | Process for the production of propylene copolymers using a prepolymerised catalyst - The present invention relates to a process for the production of propylene copolymers wherein
| 07-22-2010 |
20100280197 | MODIFIED PARTICLE, SUPPORT, CATALYST COMPONENT FOR ADDITION POLYMERIZATION, CATALYST FOR ADDITION POLYMERIZATION, AND PROCESS FOR PRODUCING ADDITION POLYMER - A process for producing a modified particle, which involves the step of contacting with one another compounds (a), (b) and (c) represented by the defined general formulas M | 11-04-2010 |
20100292417 | Phosphorus Modified Molecular Sieves, Their Use in Conversion of Organics to Olefins - The present invention is a phosphorous modified zeolite (A) made by a process comprising in that order:
| 11-18-2010 |
20110003949 | Catalytic Polymerization of Polymers Containing Electrophilic Linkages Using Nucleophilic Reagents - The disclosure relates to methods and materials useful for polymerizing a monomer. In one embodiment, for example, the disclosure provides a method for polymerizing a monomer containing a plurality of electrophilic groups, wherein the method comprises contacting the monomer with a nucleophilic reagent in the presence of a guanidine-containing catalyst. The methods and materials of the disclosure find utility, for example, in the field of materials science. | 01-06-2011 |
20110054128 | Controlling Prime Olefin Ratio In An Oxygenates-To-Olefins Reaction - Disclosed herein is a method of controlling production of olefins in an oxygenates-to-olefins reaction by combining in a reactor methanol and a molecular sieve, a AlPO or SAPO in certain embodiments, under conditions to produce at least ethylene and propylene having a first ethylene/propylene ratio; adding to the reactor a first amount of a C | 03-03-2011 |
20110071263 | Process for the manufacture of at least one ethylene derivative compound - Process for the manufacture of at least one ethylene derivative compound starting with a hydrocarbon source according to which: a) the hydrocarbon source is subjected to a simplified cracking which produces a mixture of products containing ethylene and other constituents; b) the mixture of products is fractionated in one fractionation step into one fraction containing almost all the ethylene (fraction A), optionally into one individual fraction of ethane and into one heavy fraction (fraction C); and c) the fraction A is conveyed to the manufacture of at least one ethylene derivative compound. | 03-24-2011 |
20110077366 | Process for the manufacture of at least one ethylene derivative compound - Process for the manufacture of at least one ethylene derivative compound starting from a low value residual gas, preferably a refinery off-gas (ROG), according to which: a) the low value residual gas is subjected to a series of treatment steps in a low value residual gas recovery unit in order to remove the undesirable components present therein and to obtain a mixture of products containing ethylene and other constituents; b) the mixture of products is fractionated in one fractionation step into one fraction A containing almost all the ethylene, optionally into one individual fraction of ethane, and into one heavy fraction C; and c) the fraction A is conveyed to the manufacture of at least one ethylene derivative compound. | 03-31-2011 |
20110082267 | Process for the manufacture of 1,2-dichloroethane and of at least one ethylene derivative compound different from 1,2-dichloroethane - Process for the manufacture of 1,2-dichlorethane and of at least one ethylene derivative compound which is different from 1,2-dichloroethane starting with a hydrocarbon source according to which: a) the hydrocarbon source is subjected to a simplified cracking which produces a mixture of products containing ethylene and other constituents; b) the mixture of products is separated at least into a fraction A enriched with compounds which are lighter than ethylene, containing part of the ethylene, into a fraction B enriched with ethylene and into a heavy fraction C; and c) one fraction among fraction A and fraction B is conveyed to the manufacture of 1,2-dichloroethane and optionally of any compound derived therefrom, optionally after having been subjected to an acetylene hydrogenation, while the other fraction is conveyed to the manufacture of at least one ethylene derivative compound manufactured directly starting with ethylene which is different from 1,2-dichloroethane and optionally of any compound derived therefrom. | 04-07-2011 |
20110118425 | Process for Obtaining Catalyst Composites Comprising MeAPO and Their Use in Conversion of Organics to Olefins - The present invention is a mixture comprising by weight 0.01 to 30% of at least one medium or large pore crystalline silicoaluminate, silicoaluminophosphate materials or silicoaluminate mesoporous molecular sieves (co-catalyst) (A) for respectively 99.99 to 70% of at least a MeAPO molecular sieve. | 05-19-2011 |
20110118426 | PROCESS FOR PRODUCING ACRYLIC ACID, AND PROCESS FOR PRODUCING HYDROPHILIC RESIN AND PROCESS FOR PRODUCING WATER ABSORPTIVERESIN USING THE PROCESS | 05-19-2011 |
20110152478 | Method of Preparing A Molecular Sieve and Its Use In The Conversion Of Oxygenates To Olefins - A method of preparing a silicoaluminophosphate molecular sieve which comprises the steps of combining a source of silica, a source of phosphorous, a source of alumina and water to form a primary mixture; adding a structure directing agent to said mixture and optional seeds to form a synthesis mixture. The synthesis mixture is synthesized by heating the mixture to a crystallization temperature to form the sieve. The molar ratio of the structure directing agent relative to the source of alumina may vary between 1.3 and 1.9 and the ratio of water to the source of alumina may vary between 20 to 34. | 06-23-2011 |
20110152479 | Process to Make Olefins from Oxygenates - The present invention relates to a process to make light olefins, in a combined XTO-OC process, from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock comprising :
| 06-23-2011 |
20110166303 | Process to Make Olefins from Oxygenates - The present invention relates to a process to make light olefins, in a combined XTO-OC process, from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock comprising: | 07-07-2011 |
20110166304 | USE OF FOAM BODIES IN OXIDATION REACTORS FOR PREPARING UNSATURATED ALDEHYDES OR CARBOXYLIC ACIDS - The present invention relates to a process for preparing unsaturated aldehydes or unsaturated carboxylic acids by heterogeneous catalytic gas phase oxidation of unsaturated or saturated hydrocarbons, comprising the process steps of: i) providing a gas mixture comprising a saturated hydrocarbon and catalytically dehydrogenating the saturated hydrocarbon in the gas phase to obtain a gas mixture comprising an unsaturated hydrocarbon in a dehydrogenation reactor having a dehydrogenation catalyst material; or ii) providing a gas mixture comprising oxygen and an unsaturated hydrocarbon; iii) catalytically oxidizing the unsaturated hydrocarbon obtained in process step i) or provided in process step ii) in the gas phase to obtain a gas mixture comprising an unsaturated aldehyde in a first oxidation reactor having a first oxidation catalyst material; wherein at least one of the reactors selected from the dehydrogenation reactor, the first oxidation reactor and the second oxidation reactor comprises at least one foam body. | 07-07-2011 |
20110178255 | BENZODITHIOPHENE BASED MATERIALS COMPOSITIONS - A polymer semiconductor that includes a polythiophene having an M | 07-21-2011 |
20110196113 | Process to Make Olefins and Aromatics from Organics - The present invention relates to a process to make light olefins and aromatics, in a combined XTO-OC process, from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock comprising: | 08-11-2011 |
20110196114 | POLYOLEFIN DERIVED FROM RENEWABLE RESOURCES, AND METHOD FOR PRODUCING SAME - The invention relates to a polymer obtained by polymerizing olefins having 6 to 9 carbon atoms and partially derived from renewable resources. In particular, the polymer according to the invention can be derived from vegetable oil or animal fat. The invention also relates to the method for producing the polymer. | 08-11-2011 |
20110201767 | PROCESS FOR PREPARING POLYMERS FROM 3-METHYLBUT-1-ENE - The present invention relates to a copolymer which contains 3-methylbut-1-ene as a comonomer and which contains ethene or propene as a further monomer, the proportion of the incorporated 3-methylbut-1-ene being 0.1 to 40 mol %, and to a process for preparing such copolymers, the polymerization being performed in the presence of a catalyst which comprises at least one cyclopentadienyl group. | 08-18-2011 |
20110213104 | INTEGRATED PROCESS FOR THE PRODUCTION OF ETHYLENE-BUTYLENE COPOLYMER, AN ETHYLENE-BUTYLENE COPOLYMER AND THE USE OF ETHYLENE AND 1-BUTYLENE, AS COMONOMER, SOURCED FROM RENEWABLE NATURAL RAW MATERIALS - The present invention relates to integrated processes for the production of ethylene-butylene copolymers from at least one renewable natural raw material. More specifically, the present invention relates to processes wherein in the ethylene monomer, used in the polymerization for the production of an ethylene copolymer, and the 1-butylene, as the comonomer, is obtained by the ethanol dehydration reaction, which ethanol is produced by the fermentation of sugars, and the 1-butylene comonomer is obtained according to at least one of the following reactions: (i) dehydration reaction of 1-butanol directly produced by the fermentation of sugars, (ii) dehydration reaction of 1-butanol obtained from ethanol via a chemical route, which ethanol is produced by the fermentation of sugars; and/or (iii) dimerization reaction of ethylene produced by the dehydration of ethanol obtained from the fermentation of sugars, followed by isomerization of the 2-butylene isomers then formed. | 09-01-2011 |
20110237762 | Reactor, Process for Producing Prepolymerization Catalyst for Olefin Polymerization, and Process for Producing Olefin Polymer - The present invention relates to a reactor, a process for producing a prepolymerization catalyst for olefin polymerization, and a process for producing an olefin polymer. | 09-29-2011 |
20120046427 | "GREEN" PLASTIC MATERIALS AND METHODS OF MANUFACTURING THE SAME - A process is disclosed for producing plastic materials by providing a biology based feedstock and reacting the biology based feedstock to form a feedstock capable of reaction to form the plastic material, wherein the plastic material is selected from polystyrene and polyethylene terephthalate (PET). | 02-23-2012 |
20120108767 | METHOD FOR PRODUCING BIO-RESOURCED POLYMER-GRADE ACRYLIC ACID FROM GLYCEROL - The present invention relates to the manufacture of bioresourced polymer-grade acrylic acid from glycerol. The polymer grade acrylic acid produced has limited content of certain impurities harmful to polymerization processes, such as, total aldehydes, protoanemonin, maleic anhydride and nonphenolic polymerization inhibitors. The invention also relates to the use of the bioresourced acrylic acid obtained for manufacture of superabsorbents or for manufacture of polymers or copolymers using amide or ester derivatives of the bioresourced acrylic acid. | 05-03-2012 |
20120142871 | POLYURETHANE-MODIFIED ACRYLIC RESIN AND PREPARING METHOD THEREOF - A polyurethane-modified acrylic resin and a preparing method thereof are disclosed. The polyurethane-modified acrylic resin is prepared through the following steps: preparing a monomer with double bond and urethane group by means of a reaction of isocyanate, hydroxylalkyl acrylate and aliphatic alcohol, and then copolymerizing the monomer with acrylate monomer. The polyurethane-modified acrylic resin of the present invention contains a urethane structure, has the features of both polyurethane and acrylic resin, and is soluble in alcohol or ester solvent. An ink, a laminating adhesive, a metal surface-protective coating and a gloss varnish for woodware produced from the resin as well as the preparing methods thereof are also disclosed. | 06-07-2012 |
20120202954 | Synthesis of Chabazite-Containing Molecular Sieves and Their Use in the Conversion of Oxygenates to Olefins - In a method of synthesizing a silicoaluminophosphate molecular sieve having 90%+CHA framework type character, a reaction mixture is prepared comprising first combining a reactive source of aluminum with a reactive source of phosphorus to form a primary mixture that is aged. A reactive source of silicon and a template for directing the formation of the molecular sieve can then be added to form a synthesis mixture. Crystallization is then induced in the synthesis mixture. Advantageously, (i) the source of silicon comprises an organosilicate, (ii) the source of phosphorus optionally comprises an organophosphate, and (iii) the crystallized silicoaluminophosphate molecular sieve has a crystal size distribution such that its average crystal size is not greater than 5 μm. The molecular sieve can then preferably be used in a hydrocarbon (oxygenates-to-olefins) conversion process. | 08-09-2012 |
20120226003 | SUPERABSORBENT POLYMERS AND METHODS OF MAKING THE SAME - In some embodiments, a process for producing a polymer comprises (I) producing a pure (meth)acrylic acid comprising the steps of (a) synthesizing a crude (meth)acrylic acid phase; (b) distillatively working-up the crude (meth)acrylic acid phase to obtain a (meth)acrylic acid phase and a dimer phase comprising (meth)acrylic acid dimers or (meth)acrylic acid oligomers or both; (c) splitting at least a part of the (meth)acrylic acid dimers or of the (meth)acrylic acid oligomers or both from the dimer phase to obtain a (meth)acrylic acid-comprising low boiling phase and a high boiling phase comprising less (meth)acrylic acid than the low boiling phase; (d) separating at least a part of the (meth)acrylic acid from the low boiling phase to obtain a pure (meth)acrylic acid, and a residue; (II) polymerizing a monomer phase comprising the pure (meth)acrylic acid to obtain a polymer phase; and (III) working-up the polymer phase to obtain the polymer. | 09-06-2012 |
20120232233 | SUPERABSORBENT POLYMERS AND METHODS OF MAKING THE SAME - In one aspect, a process for the preparation of a superabsorbent polymer is described herein. In some embodiments, the process comprises (I) preparing acrylic acid, wherein the process comprises (a | 09-13-2012 |
20120238713 | Methods For Preparation of Pyridylamines And Their Use In Oligomerization Reactions - Alternate methods for preparing functionalized pyridyl-amine products from pyridinyl starting materials are provided herein. These alternately-prepared functionalized pyridyl-amines can be used as ligands or ligand precursors in catalytic compositions, e.g., in oligomerization reactions. Methods for such reactions are also provided herein. | 09-20-2012 |
20120259076 | Process for Olefin Polymerization - The present application provides a process for polymerizing at least one olefin in the presence of a polymerization catalyst, including: (A) continuously introducing a first liquid with a transition metal compound, an organometallic compound, and a solvent and a second liquid into an emulsification stage, (B) continuously withdrawing the emulsion and directing it into a solidification stage to form a slurry with a solid polymerization catalyst component, (C) continuously recovering the solid polymerization catalyst component, (D) directing the solid polymerization catalyst component into a first prepolymerization stage with a monomer and a second liquid to form a slurry, (E) recovering a prepolymerized solid polymerization catalyst component, (F) continuously introducing the prepolymerized solid polymerization catalyst component into a second prepolymerization stage with an olefin monomer to form a prepolymerized catalyst, and (G) continuously withdrawing the prepolymerized catalyst and directing it into a subsequent polymerization stage with at least one olefin monomer. | 10-11-2012 |
20120309911 | METHOD OF PRODUCING ARCYLIC AND METHACRYLIC ACID - A method of producing a compound of formula (i): wherein R═H or CH | 12-06-2012 |
20130023631 | Process for the preparation of ethylene copolymer compositions in the presence of an oligomerization catalyst - Process for the preparation of an ethylene copolymer composition having a polydispersity index M | 01-24-2013 |
20130072645 | SUPERABSORBENT POLYMERS AND METHODS OF MAKING THE SAME - The invention relates to producing a superabsorbent polymer comprising (I) producing a (meth)acrylic acid comprising the steps of (a) synthesizing a crude (meth)acrylic acid phase; (b) distillatively working-up the crude (meth)acrylic acid phase to obtain a (meth)acrylic acid phase and a dimer phase comprising (meth)acrylic acid dimers and/or (meth)acrylic acid oligomers; (c) splitting at least a part of the (meth)acrylic acid dimers or of the (meth)acrylic acid oligomers or both from the dimer phase to obtain a (meth)acrylic acid-comprising a low boiling phase and a high boiling phase comprising less (meth)acrylic acid than the low boiling phase; (d) separating at least a part of the (meth)acrylic acid from the low boiling phase by forming crystals to obtain a pure (meth)acrylic acid, and a residue; (II) polymerizing a monomer phase comprising the pure (meth)acrylic acid to obtain a polymer phase; and (III) working-up the polymer phase to obtain the polymer. | 03-21-2013 |
20130184420 | MONOMER COMPOSITION CONTAINING UNSATURATED POLYALKYLENE GLYCOL ETHER-BASED MONOMER, METHOD FOR PRODUCING COMPOSITION THEREOF, POLYMER OBTAINED USING COMPOSITION THEREOF, AND METHOD FOR PRODUCING POLYMER THEREOF - To provide a monomer composition containing an unsaturated polyalkylene glycol ether-based monomer and having excellent stability. | 07-18-2013 |
20130190463 | WATER SOLUBLE BIODEGRADABLE POLYMER AND PROCESS FOR PREPARATION THEREOF - A water soluble biodegradable polymer and a process for preparation thereof are disclosed. The polymer has characteristic NMR and FTIR peaks. The polymer is prepared by a process including preparing a mixture of phosphatides and triglycerides, reacting the mixture with an anhydride in an organic solvent in presence of a catalyst at an elevated temperature to obtain a reaction product, hydrolyzing the reaction product, thereafter separating the organic solvent from the reaction product, adding a second monomer with a catalyst to form a reaction mass, further curing the mass under stirring at reflux temperature, and finally cooling the cured mass and neutralizing it with caustic lye to obtain the polymer. The polymer is biodegradable and has high calcium sequestration and calcium salt inhibition properties suitable as an additive for detergents and water treatment applications. | 07-25-2013 |
20130253149 | SUPERABSORBENT POLYMERS AND METHODS OF MAKING THE SAME - In one aspect, a process for the preparation of a superabsorbent polymer is described herein. In some embodiments, the process comprises (I) preparing acrylic acid, wherein the process comprises (a1) provision of a fluid F1 having a composition comprising from about 5 to about 20 wt. % of hydroxypropionic acid, salts thereof, or mixtures thereof; from about 0.1 to about 5 wt. % of inorganic salts; from about 0.1 to about 30 wt. % of organic compounds which differ from hydroxypropionic acid; from 0 to about 50 wt. % of solids; and from about 20 to about 90 wt. % of water; (a2) dehydration of said hydroxypropionic acid to give a fluid F2 containing acrylic acid; and (a3) purification of said fluid F2 to give a purified acrylic acid phase comprising acrylic acid having a purity of at least 70 wt. %; and (II) polymerizing the acrylic acid of (I) to form a superabsorbent polymer. | 09-26-2013 |
20130267667 | PROCESS FOR POLYMERIZING PROPYLENE - Process for producing a propylene homopolymer, a propylene random copolymer or a heterophasic propylene polymer, which process comprises the steps of (a) prepolymerisation, (b) slurry phase polymerisation (c) gas phase polymerisation and optionally (d) one or two further gas phase polymerisation(s), whereby the process is performed in the presence of a catalyst system comprising (x) a Ziegler-Natta procatalyst and (y) an organometallic cocatalyst and (z) an external donor represented by formula (II) and/or (III) Si(OCH | 10-10-2013 |
20130303713 | PROCESS FOR THE PRODUCTION OF METHACRYLIC ACID AND ITS DERIVATIVES AND POLYMERS PRODUCED THEREFROM - A process for the production of methacrylic acid is described. The process comprises the base catalysed decarboxylation of at least one or a mixture of dicarboxylic acids selected from itaconic, citraconic or mesaconic acid. The decarboxylation is carried out in the range greater than 240 and up to 275° C. to provide high selectivity. The methacrylic acid product may be esterified to produce an ester. A method of preparing polymers or copolymers of methacrylic acid or methacrylic acid esters using the process is also described. Optionally, the process may be preceded with a decarboxylation and, if necessary, a dehydration step on a source of pre-acid such as citric acid or isocitric acid. | 11-14-2013 |
20140031501 | PROCESS FOR THE PRODUCTION OF (METH)ACRYLIC ACID AND DERIVATIVES AND POLYERS PRODUCED THEREFROM - A method of extracting (meth)acrylic acid from an aqueous reaction medium into an organic phase in contact therewith is described. The aqueous reaction medium is formed from at least one base catalyst and at least one dicarboxylic acid selected from maleic, fumaric, malic, itaconic, citraconic, mesaconic, and citramalic acid or mixtures thereof in aqueous solution and contains the base catalysed decarboxylation products of the base catalysed reaction. The method includes either the addition of at least one of the said dicarboxylic acids and/or a pre-cursor thereof to the aqueous reaction medium to enhance the solvent extraction of the (meth)acrylic acid into the organic solvent or maintaining the level of base catalyst to dicarboxylic acid and/or pre-cursor at a sub-stoichiometric level during the extraction process. The method extends to a process of producing (meth)acrylic acid, its esters and polymers and copolymers thereof. | 01-30-2014 |
20140107303 | Preparation Process for Cyclic Conjugated Polymer and Polymerization Catalyst for Cyclic Conjugated Polymer - A preparation process for a cyclic conjugated polymer, includes the steps of deprotonating a monohalogenated cyclic conjugated compound of a 5- to 7-membered ring using a deprotonation catalyst comprising secondary amine represented by R | 04-17-2014 |
20140114030 | PREPARATION METHOD OF HIGH-PERFORMANCE STAR-SHAPED POLYCARBOXYLATE SUPERPLASTICIZER - This invention relates to a method for preparing a star-shaped polycarboxylate superplasticizer by the first esterification step with polyol and (meth)acrylic acid as main reactants and the second polymerization step. In the first step, the star-shaped polymerizable active ends were synthesized by esterification between polyol and (meth)acrylic acid in the presence of catalyst. In the second step, the final star-shaped polycarboxylate superplasticizer was prepared by radical polymerization among the product obtained in first step, unsaturated polyoxyethylene ethers, molecular weight regulator and unsaturated carboxylic acid in the presence of initiator. The production process of this invention exhibits some characteristics including simple, easily controllable, high polymerization degree, low cost and pollution free. The star-shaped molecular structure of polycarboxylate superplasticizer can be achieved through synthesizing active “core” by esterification and “arm” by radical polymerization. It showed better cement paste fluidity and fluidity retention, which manifested as better adaptability to cement and application performance in concrete, than both traditional linear and comb-shaped polycarboxylate superplasticizer at common or lower dosage. | 04-24-2014 |
20140135460 | LOW BAND GAP COPOLYMER AND METHOD FOR MANUFACTURING SAME - Disclosed herein are a copolymer having a low band gap and a preparing method thereof, and more specifically, a copolymer having a low band gap and other various and excellent physical properties, and a preparing method thereof. | 05-15-2014 |
20140148562 | METHOD FOR POLYMERIZING ALPHA-OLEFIN - The purpose of the present invention is to produce an alpha-olefin polymer having excellent production stability utilizing a long-lasting high catalytic activity. Provided is a method for producing an alpha-olefin polymer using a catalyst comprising:
| 05-29-2014 |
20150094432 | METHOD FOR SYNTHESISING TRIFLUOROETHYLENE FROM CHLOROTRIFLUOROETHYLENE - The present invention relates to the preparation of trifluoroethylene (VF | 04-02-2015 |
20150299743 | PROCESS FOR PRODUCTION OF AN ALKYL METHACRYLATE - A process for the production of an alkyl methacrylate, particularly methyl methacrylate, is provided, in which a Baeyer-Villiger Monooxygenase enzyme is used to convert an alkylisopropenylketone substrate to the relevant alkyl methacrylate by abnormal asymmetric oxygen insertion. The invention provides a biobased route to key industrial monomers in particular for the generation of polymers such as poly methyl methacrylate. | 10-22-2015 |
20150307433 | PROCESS FOR THE PRODUCTION OF (METH)ACRYLIC ACID AND DERIVATIVES AND POLYMERS PRODUCED THEREFROM - A method of extracting (meth)acrylic acid from an aqueous reaction medium into an organic phase in contact therewith is described. The aqueous reaction medium is formed from at least one base catalyst and at least one dicarboxylic acid selected from maleic, fumaric, malic, itaconic, citraconic, mesaconic, and citramalic acid or mixtures thereof in aqueous solution and contains the base catalysed decarboxylation products of the base catalysed reaction. The method includes either the addition of at least one of the said dicarboxylic acids and/or a pre-cursor thereof to the aqueous reaction medium to enhance the solvent extraction of the (meth)acrylic acid into the organic solvent or maintaining the level of base catalyst to dicarboxylic acid and/or pre-cursor at a sub-stoichiometric level during the extraction process. The method extends to a process of producing (meth)acrylic acid, its esters and polymers and copolymers thereof. | 10-29-2015 |
20150307638 | METHOD FOR FORMING POLYMER USING BORON COMPOUND, POLYMERIZATION INITIATOR AND THE POLYMER - The present invention provides a method for forming a polymer by using a mixture containing a polymerization initiator which is an adduct of a boron compound and a first unsaturated hydrocarbon compound, and a second unsaturated hydrocarbon compound, generating a radical by oxidization of the polymerization initiator and adding the radical to the second unsaturated hydrocarbon compound, thereby forming the polymer. According to the present invention, excellent controllability of alkylboranes for radical polymerization can be maintained and the structure of a polymerization initiation terminal can be freely selected and controlled. Thus, a terminal-modified polymer having functionality imparted to the terminal group can be prepared. In addition, a polymerization initiator having a plurality of polymerization starting points can be prepared, and polymers with special structures including multibranched polymers, grafted-type (comb-type) polymers and brush-shaped polymers can be prepared. | 10-29-2015 |
20150315115 | METHOD FOR PRODUCING ACRYLIC ACID - Method for producing acrylic acid by dehydration of a C | 11-05-2015 |
20160002122 | Process to Make Olefins from Isobutanol - A process for the conversion of an alcohol mixture to make propylene may include introducing into a reactor a stream that includes the alcohol mixture. The alcohol mixture may include 20 to 100 weight percent isobutanol. The process may include contacting the stream with a single catalyst at a temperature above 450° C. in the reactor at conditions effective to dehydrate the isobutanol, forming C | 01-07-2016 |
20160024245 | GREEN POLYTHIOPHENE ELECTROCHROMIC MATERIALS, METHOD FOR PREPARATION THEREOF, AND ASSEMBLY COMPRISING THE SAME - A novel soluble green polythiophene electrochromic material, poly[2,3-bis(3,4-dialkoxyphenyl)-5,8-bis(3,4-ethylenedioxythienyl)quinoxaline], as shown by formula (I), | 01-28-2016 |
20160130195 | Process for Obtaining a Catalyst Composite - A catalyst composite may include a molecular sieve having pores of 10- or more-membered rings and a metal silicate different from the molecular sieve. The metal silicate may include at least one alkaline earth metal and one or more of the following metals: Ga, Al, Ce, In, Cs, Sc, Sn, Li, Zn, Co, Mo, Mn, Ni, Fe, Cu, Cr, Ti and V. The catalyst composite may include at least 0.1 wt % of silicate. The catalyst composite may be used in an XTO reactor or for catalytic cracking. | 05-12-2016 |
20160130379 | PROCESS, PROPERTIES, AND APPLICATIONS OF GRAFT COPOLYMERS - A polymeric molecule having the formula: X—[C(A) | 05-12-2016 |
20160152545 | PROCESS FOR PRODUCING FLUORINATED COMPOUND | 06-02-2016 |
20160159951 | Method of fixing radioactive tritiated water in a stable tritiated polystyrene product - The present invention relates to a method and covalent bonding process for fixing tritiated water into a polystyrene based product for the permanent elimination of tritiated water from the environment. | 06-09-2016 |
20160194429 | PROCESS FOR PRODUCING PHOTOCHROMIC OPTICAL MATERIAL | 07-07-2016 |
20160200642 | ZEOLITE CATALYSTS FOR THE CONVERSION OF ALKYL HALIDES TO OLEFINS | 07-14-2016 |
20190144574 | METHOD FOR PREPARING AN AQUEOUS POLYACRYLAMIDE SOLUTION | 05-16-2019 |
526076000 | Polymerizable material derived from petroleum fraction | 4 |
20100324232 | SYSTEMS AND METHODS FOR MAKING A MIDDLE DISTILLATE PRODUCT AND LOWER OLEFINS FROM A HYDROCARBON FEEDSTOCK - A system comprising a riser reactor comprising a gas oil feedstock and a first catalyst under catalytic cracking conditions to yield a riser reactor product comprising a cracked gas oil product and a first used catalyst, a intermediate reactor comprising at least a portion of the cracked gas oil product and a second catalyst under high severity conditions to yield a cracked gasoline product and a second used catalyst, and a recycle conduit to send at least a portion of the cracked gas oil product to the riser reactor. | 12-23-2010 |
20110034647 | SYSTEMS AND METHODS FOR MAKING A MIDDLE DISTILLATE PRODUCT AND LOWER OLEFINS FROM A HYDROCARBON FEEDSTOCK - A system comprising a riser reactor comprising a gas oil feedstock and a first catalyst under catalytic cracking conditions to yield a riser reactor product comprising a cracked gas oil product and a first used catalyst; an intermediate reactor comprising at least a portion of the cracked gas oil product, a raffinate stream, and a second catalyst under high severity conditions to yield a cracked intermediate product and a second used catalyst; and a recycle conduit to send at least a portion of the cracked gas oil product to the riser reactor. | 02-10-2011 |
20110071264 | Process for Obtaining Modified Molecular Sieves - The invention covers a process for obtaining an alkaline earth or rare earth metal-P-modified molecular sieve (M-P-modified molecular sieve) comprising the following steps:
| 03-24-2011 |
20160002140 | SELECTIVE SYNTHESIS OF 2-OCTYL ACRYLATE BY ACID CATALYZED ESTERIFICATION OF 2-OCTANOL AND ACRYLIC ACID - A method of making 2-octyl acrylate comprising reacting 2-octanol with acrylic acid in the presence of an acid catalyst and added water is described. The 2-octanol may be derived from renewable resources, such as castor oil. The method is efficient and provides selectivity for 2-octyl acrylate. | 01-07-2016 |