| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 528408000 | Polymerizing in the presence of a specified material other than a reactant | 44 |
| 20080227950 | Latent Epoxy Hardeners Based on Amines Blocked by Acyl-Ethyleneurea, Epoxy Composition Containing the Same and Method of Preparation Thereof - Acyl-ethyleneurea terminated compounds or similar materials suitable for use as a blocking or modifying agent for improving the latency of a mixture of a hardener and a modified epoxy resin composition having increased hydroxy concentration. The compounds or materials of the invention are prepared in accordance with a preferred process by heating a dibasic acid with ethyleneurea in the presence of a basic catalyst. Alternatively, methyl esters or anhydrides of dibasic acids may be used instead of dibasic acids. Curable epoxy-based compositions treated with the compounds or materials of the invention, and processes, whereby the various novel compositions of the invention are made, are also described. | 09-18-2008 |
| 20090054621 | METHOD FOR MAKING POLYETHYLENE GLYCOL CARBONATES - A method for making a alkyl polyethylene glycol carbonate by the step of: (a) reacting mono-alkyl polyethylene glycol (MPEG) such as MPEG having an average molecular weight of 20,000 grams per mole and a polydispersity of less than 1.1, a chloroformate such as p-nitrophenyl chloroformate, an aromatic solvent such as toluene and an amine such as tripentyl amine. And, a method for making a multi-armed polyethylene glycol carbonate by the step of: (a) reacting a multi-armed polyethylene glycol having at least one hydroxyl group, a chloroformate, an aromatic solvent and an amine. | 02-26-2009 |
| 20090137776 | Process for producing poly-tetrahydrofuran - The present invention relates to a process for producing tetrahydrofuran polymer or tetrahydrofuran copolymer by using heteropolyacid catalyst, and more particularly, to a process for producing tetrahydrofuran polymer by using hydronium ion water having a pH of 5.5 or less as a reaction initiator in the initiation step. | 05-28-2009 |
| 20090203875 | PROCESS FOR PURIFYING POLYETHER - To provide a purification process which makes it possible to reduce the amount of an inorganic adsorbent to be used, shorten the time for separating a polyether and the inorganic adsorbent by filtration, and further reduce the amount of a metal derived from a double metal cyanide complex catalyst in a purified polyether thereby obtained. | 08-13-2009 |
| 20100022744 | CLATHRATE COMPOUND, CURING CATALYST, COMPOSITION FOR FORMING CURED RESIN, AND CURED RESIN - The present invention provides a curing catalyst (clathrate compound) for which the curing reaction is suppressed at low temperatures, allowing an improvement in the one-pot stability, but which can effectively cure a resin upon heat treatment. The clathrate compound comprises at least an isophthalic acid compound represented by a formula (1) [wherein R | 01-28-2010 |
| 20110207910 | POLYETHER GLYCOL MANUFACTURING PROCESS - The present invention relates to an improved process for manufacturing polyether and copolyether glycols by polymerization of a reaction mixture comprising at least one tetrahydrofuran or at least one tetrahydrofuran and at least one other cyclic ether, for example, an alkylene oxide, in the presence of a particular perfluorosulfonic acid resin catalyst comprising a copolymer of tetrafluoroethylene (TFE) or chlorotrifluoroethylene (CTFE) and a monomer of the formula CF | 08-25-2011 |
| 20120041170 | REACTIVE INORGANIC CLUSTERS - Storage-stable reactive inorganic clusters and a process for preparing such storage-stable reactive inorganic clusters (e.g., silica structures) having, for example, reactive amino groups. The storage-stable reactive inorganic clusters may be used as a curing agent for thermosetting resin compositions such as epoxy resins. | 02-16-2012 |
| 20120232246 | Oxymethylene Polymers, Process for the Preparation Thereof and Use Thereof - Oxymethylene polymers having a bimodal distribution or having a distribution of higher modality and having a targeted content of a low molecular weight fraction of from 1 to 5 percent by mass are described. Moldings of these polymers are distinguished by high low-temperature notched impact strength associated with a high modulus of elasticity. | 09-13-2012 |
| 20120259089 | Initiator - An initiator for cationic polymerization comprises a salt of a protic acid as well as a protic add. The molar ratio of protic acid to salt is in the range from 1:0.01 to 1:2000. The initiator is used for example for cationic homo- or copolymerization of trioxane, and permits stable and flexible operation of the polymerization. | 10-11-2012 |
| 20130116402 | METHOD TO PRODUCE COPOLYMERS OF TETRAHYDROFURAN AND EPOXIDISED NATURAL OILS - The invention relates to a method to produce polytetrahydrofuran (PTHF) copolymer from plant oil by copolymerizing epoxidized oil; preferably from natural sources like animal oils and more preferably from plants oils; with tetrahydrofuran (THF), in the presence of boron trifluoride-diethylether complex or tetrafluoroboric acid to yield the desired copolymer with specific properties. The properties of the produced PTHF copolymer depends on the (i) type of epoxidized oil used as co-monomer (ii) mole ratio between epoxidized oil and THF (iii) amount of catalyst (iv) reaction temperature (v) reaction time. The produced PTHF copolymers were then used as raw material for the production of polyurethane and polyurea. | 05-09-2013 |
| 20130158231 | LIQUID CURABLE EPOXY RESIN COMPOSITION AND ADHESIVE AGENT CONTAINING SAME - An object of the present invention is to provide a curable epoxy resin composition containing an epoxy resin, wherein the composition is excellent in storage stability and curing characteristics and provides a cured product excellent in characteristics, particularly organic solvent resistance; an adhesive agent consisting of the composition; and an adhesive agent consisting of a curable epoxy resin composition excellent in adhesive strength. The curable epoxy resin composition of the present invention is a liquid curable epoxy resin composition containing the following (A) and (B): (A) an epoxy resin or an epoxy-polyester hybrid resin; and (B) a clathrate containing the following (b1) and (b2): (b1) at least one compound selected from the group consisting of a carboxylic acid compound represented by the formula A(COOH) | 06-20-2013 |
| 20130172525 | METHOD FOR PRODUCING EPOXY COMPOUND HAVING CYANURIC ACID SKELETON - There is provided an epoxy compound that provides properties of cured products combining high transparency with high flexural strength by being thermally cured while maintaining advantageous handling properties in a liquid state thereof; and a method for producing a composition by using the epoxy compound. A method for producing an epoxy compound of Formula (1): | 07-04-2013 |
| 20130225788 | CURABLE RESIN COMPOSITION AND SHORT-CURE METHOD - Disclosed herein is a method for utilizing the exothermic energy generated by a low temperature cure reaction to access a high-temperature cure reaction, which is otherwise energetically inaccessible at a chosen tool temperature, thereby producing a cured resin matrix with properties closely matching to those produced via high-temperature cure reactions but achieved via a short cure time and low cure temperature. Also disclosed is a short-cure resin composition containing: (a) at least one multifunctional epoxy resin having an epoxy functionality of greater than 1; (b) a hardener composition containing (i) at least one aliphatic or cycloaliphatic amine curing agent having one or more amino groups per molecule; (ii) at least one aromatic amine curing agent having one or more amino groups per molecule; and optionally, (iii) an imidazole as curing accelerator. The improved properties of this resin composition include being curable at a temperature of ≦120° C. for a time period of less than 10 minutes to achieve a degree of cure higher than that derived from the same composition with just (i) aliphatic/cycloaliphatic amine or (ii) aromatic amine in isolation. | 08-29-2013 |
| 20140323686 | Process for Recycling A Formaldehyde Source During A Polymerization Process - A process for recovering volatile components from an oxymethylene polymer process is disclosed. The volatile components are removed from the process and the formaldehyde collected is converted to a cyclic acetal. The formaldehyde is converted to a cyclic acetal by contacting the formaldehyde with a catalyst in the presence of an aprotic solvent. | 10-30-2014 |
| 20140343247 | SHAPE MEMORY EPOXY COPOLYMERS USING AROMATIC ALCOHOL CURE AGENTS - Embodiments of the present disclosure are directed to an epoxy shape memory copolymer by copolymerizing a mixture comprising multifunctional epoxide reagent, triglycidyl ether diluent, catalyst, and at least one aromatic alcohol curing agent of Formula I: | 11-20-2014 |
| 20160083506 | ISOHEXIDE-DIACETAL BASED POLYMERS AND A PROCESS THEREOF - The present invention discloses isohexide based compounds and their polymers which are derived from renewable resources and are potentially degradable. | 03-24-2016 |
| 20160090445 | PRODUCTION METHOD FOR OXYMETHYLENE COPOLYMER - A method for the continuous production, at high polymerization yield, of an oxymethylene copolymer having improved thermal stability and formaldehyde emission, while maintaining toughness and rigidity, is provided. Provided is a production method for oxymethylene copolymer, including: a step of carrying out a copolymerization reaction of trioxane and 1,3-dioxolane in an amount of 0.9-2.4 mass % with respect to the trioxane, in the presence of 0.001-0.007 mol % of boron trifluoride and 0.006-2.0 mass % of a sterically hindered phenol with respect to the trioxane; and a step of adding a polymerization terminator to the reaction system at the point in time that the polymerization yield of the copolymerization reaction has reached 92% or above, to terminate polymerization. | 03-31-2016 |
| 20160102171 | Method of modifying the rate of temperature change of an epoxy resin composition in a resin container during a casting process - A method for modifying a rate of temperature change of an epoxy resin composition in a resin container during a resin casting process is proposed. The resin composition has at least one epoxy monomer component and a curing agent. A passivation agent for the curing agent is added to the epoxy resin composition. A resin container arrangement for use in such a resin transfer moulding process, a composite product having an epoxy resin composition, and a use of an organic acid in an epoxy resin casting process as a passivation agent for modifying the rate of temperature change in a resin container containing an epoxy resin composition are proposed. | 04-14-2016 |
| 20160137779 | CURABLE EPOXY RESIN COMPOSITION AND CURED PRODUCT THEREOF - An object of the present invention is to provide a curable epoxy resin composition, which is cured to provide a cured product having a high glass-transition temperature and particularly having excellent balance between heat resistance and transparency. | 05-19-2016 |
| 20160145383 | METHOD FOR PRODUCING A POLYDIOXOLANE - The present invention provides a method for producing a polydioxolane, which includes polymerizing a 1,3-dioxolane compound represented by the formula (1) in the presence of a cationic catalyst and a sterically hindered phenol in an amount of 10 to 1,500 ppm, based on the 1,3-dioxolane compound. In the formula (1), R1 to R6 are the same or difference and each independently represents a hydrogen atom, an alkyl group, an aryl group, a hydroxyalkyl group, an alkyloxy group, or an aryloxy group. | 05-26-2016 |
| 20160194297 | GLYCIDYL ETHERS OF LIMONENE DERIVATIVES AND OLIGOMERS THEREOF AS CURABLE EPOXY RESINS | 07-07-2016 |
| 528409000 | Material contains a metal atom | 23 |
| 20100041864 | DOUBLE METAL CYANIDE COMPLEX CATALYST HAVING ORGANIC LIGAND, PROCESS FOR ITS PRODUCTION AND METHOD FOR PRODUCING POLYETHER POLYOL - To provide a process for producing, simply and with high reproducibility, a double metal cyanide complex catalyst having an organic ligand, which has a high catalytic activity, a small particle size and a high particle size uniformity. | 02-18-2010 |
| 20180021753 | AMINOGLYCOSIDE HYDROGEL MICROBEADS AND MACROPOROUS GELS WITH CHEMICAL CROSSLINK, METHOD OF PREPARATION AND USE THEREOF | 01-25-2018 |
| 528410000 | Material contains a transition metal atom | 14 |
| 528411000 | Material contains a Group IVB metal atom (Ti, Zr, Hf) | 3 |
| 20100240864 | METHOD FOR CHANGING THE PREDEFINED MEAN MOLECULAR WEIGHT MN DURING THE CONTINUOUS PRODUCTION OF POLYTETRAHYDROFURANES OR THE COPOLYMERS - The present invention provides a process for changing the given mean molecular weight M | 09-23-2010 |
| 20120065363 | Catalytic conversion of sugars to polyethers - Sugars comprising the monosaccharides glucose and fructose, and the disaccharides sucrose and lactose are catalytically converted to polyethers in a sulfate fortified acid medium in the presence of transition metal compounds possessing a degree of symmetry. The conversion efficiency of this catalytic chemical process is improved by saturating the acidic reaction mixture with inorganic sulfate salts to reduce competitive reactions. Polyethers formed during the reaction are removed by filtration facilitating a continuous process. | 03-15-2012 |
| 20120259090 | COPOLYETHER GLYCOL MANUFACTURING PROCESS - The present invention provides a highly efficient process for manufacturing copolyether glycol having a mean molecular weight of from about 650 to about 5000 dalton by polymerization of tetrahydrofuran and at least one alkylene oxide in the presence of an acid catalyst and at least one compound containing reactive hydrogen atoms. More particularly, the invention relates to a process for manufacturing copolyether glycol which comprises recycle to the polymerization reaction step of at least a portion of the oligomeric cyclic ether which is co-produced with the copolyether glycol, said process exhibiting an Space Time Yield value of greater than about 0.9. | 10-11-2012 |
| 528412000 | Material contains a Group VIII metal atom (Fe, Co, Ni, Pd, Ru, Os, Ir, Rh, Pt) | 11 |
| 20080221302 | Catalyst and Process for the Polymerization of Cyclic Ethers - The present invention provides a catalyst comprising a mixture of at least one acid-activated sheet silicate with a transition metal oxide of groups 8 and/or 9 of the Periodic Table of the Elements and also a process for preparing polytetrahydrofuran, polytetrahy-drofuran copolymers, diesters or monoesters of these polymers, in which tetrahydrofuran is polymerized in the presence of at least one telogen and/or comonomer over such a catalyst. | 09-11-2008 |
| 20090299032 | Methods of Controlling Molecular Weight Distribution of Polymers and Compositions Thereof - A catalyst, co-catalyst, and/or chain transfer agent is added at a time after initiation of an addition polymerization reaction to produce a polymer product with a widened molecular weight distribution relative to having all of the components in the original reaction mixture. The catalyst, co-catalyst, or chain transfer agent may be added discretely or continuously to the reaction to produce a product with a bimodal, trimodal, or other broadened molecular weight distribution. | 12-03-2009 |
| 20100204437 | POLYCARBONATES MADE USING HIGHLY SELECTIVE CATALYSTS - Poly(propylene carbonates) are prepared from propylene oxide and CO | 08-12-2010 |
| 20110040070 | ISOTACTIC POLY(ALKYLENE OXIDE) AND PRODUCTION PROCESS THEREOF - An isotactic poly(alkylene oxide) containing the defined repeating unit, and having an isotactic triad fraction of 66 to 100%, and number-average molecular weight of 500,000 or more; and a production process thereof, comprising the step of polymerizing an epoxide represented by the defined formula in the presence of a catalyst and an aliphatic compound and/or alicyclic compound. | 02-17-2011 |
| 20120178899 | NOVEL COORDINATION COMPLEXES AND PROCESS OF PRODUCING POLYCARBONATE BY COPOLYMERIZATION OF CARBON DIOXIDE AND EPOXIDE USING THE SAME CATALYST - Provided are a complex prepared from ammonium salt-containing ligands and having such an equilibrium structural formula that the metal center takes a negative charge of 2 or higher, and a method for preparing polycarbonate via copolymerization of an epoxide compound and carbon dioxide using the complex as a catalyst. When the complex is used as a catalyst for copolymerizing an epoxide compound and carbon dioxide, it shows high activity and high selectivity and provides high-molecular weight polycarbonate, and thus easily applicable to commercial processes. In addition, after forming polycarbonate via carbon dioxide/epoxide copolymerization using the complex as a catalyst, the catalyst may be separately recovered from the copolymer. | 07-12-2012 |
| 20130079491 | ISOSELECTIVE POLYMERIZATION OF EPOXIDES - The present invention provides novel bimetallic complexes and methods of using the same in the isoselective polymerization of epoxides. The invention also provides methods of kinetic resolution of epoxides. The invention further provides polyethers with high enantiomeric excess that are useful in applications ranging from consumer goods to materials. | 03-28-2013 |
| 20130289236 | ALKYLENE OXIDE POLYMERIZATION USING A DOUBLE METAL CYANIDE CATALYST COMPLEX AND A MAGNESIUM, GROUP 3 - GROUP 15 METAL OR LANTHANIDE SERIES METAL COMPOUND - Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights. | 10-31-2013 |
| 20140031519 | CATALYST FOR EPOXIDE POLYMERISATION AND FOR THE COPOLYMERISATION OF EPOXIDE WITH CARBON DIOXIDE - The invention relates to a catalyst for catalysing the polymerisation of epoxides, and which is to be improved such that it allows a more efficient reaction to be carried out. This is achieved by providing a catalyst obtainable by mixing a) at least one double metal cyanide compound, b) at least one organic complexing agent, and c) at least one primary alcohol with 6 to 24 C atoms. In addition, the invention relates to a method for the polymerisation of epoxides, and to the use of the claimed catalyst for the polymerisation of epoxides and the copolymerisation of epoxides with carbon dioxide. | 01-30-2014 |
| 20150299239 | NOVEL TRIDENTATE COMPLEXES AND PROCESS OF PRODUCING POLYCARBONATE BY COPOLYMERIZATION OF CARBON DIOXIDE AND EPOXIDE USING THE SAME AS CATALYST - Provided are a complex synthesized from a novel tridentate ligand including an ammonium salt and a process of producing polycarbonate by copolymerization of carbon dioxide and epoxide using the same as a catalyst. A novel tridentate complex may be cheaply prepared as compared to the existing tetradentate complex containing four ammonium salts but have an advantage in that the novel tridentate complex may have an activity at a level similar to that of the existing tetradentate complex by adopting a cis-β conformation. Further, since in the tridentate complex, the number of ammonium salt serving as an initiator is small but the number of vacant sites is large as compared to the tetradentate complex containing four ammonium salts, the tridentate complex may have excellent activity. | 10-22-2015 |
| 20150353680 | POLYMERS OF THYLENE OXIDE AND CARBON DIOXIDE - The present disclosure is directed, in part, to methods of synthesizing a poly(ethylene carbonate) polymer from the reaction of ethylene oxide (EO) and carbon dioxide (CO | 12-10-2015 |
| 20160194346 | METALPORPHYRIN COMPLEX, PREPARATION METHOD THEREFOR AND METHOD FOR PREPARING POLYCARBONATE | 07-07-2016 |
| 528413000 | Material contains a Group IIA metal atom (Be, Mg, Ca, Sr, Ba, Ra) | 4 |
| 20090143563 | HYDROTALCITE CATALYZED POLYMERIZATION OF TRIMETHYLENE CARBONATE - The present invention relates to the use of hydrotalcites as catalysts for the polymerization of unsubstituted or substituted trimethylene carbonate. | 06-04-2009 |
| 20130018170 | Process for Producing Oxymethylene Polymers - The present invention relates to a process for the preparation of oxymethylene polymers, the oxymethylene polymers obtained therefrom as well as their use. | 01-17-2013 |
| 20150018514 | PROCESS FOR PREPARING OLEFIN OXIDE POLYMERIZATION CATALYSTS - A process for the production of an olefm oxide polymerization catalyst comprising: admixing at least one alkaline earth metal, liquid ammonia, an alkylene oxide, which is optionally substituted by aromatic radicals, and an organic nitrile having at least one acidic hydrogen atom to prepare a slurry of modified alkaline earth hexammine in liquid ammonia; continuously transferring the slurry of modified alkaline earth hexammine in liquid ammonia into a stripper vessel and continuously evaporating ammonia, thereby accumulating the modified catalyst in the stripper vessel; and upon complete transfer of the slurry of modified alkaline earth hexammine into the stripper vessel, aging the modified catalyst to obtain the final olefm oxide polymerization catalyst, and a catalyst obtainable by this process. | 01-15-2015 |
| 20150051370 | NOVEL BIMETALLIC CATALYTIC COMPLEXES FOR THE POLYMERISATION OF CARBON DIOXIDE AND AN EPOXIDE - The present invention provides a novel catalyst of formula (I): wherein M is selected from Zn(H), Co(II), Mn(II), Mg(II), Fe(II), Cr(III)-X or Fe(III)-X, and the use thereof in polymerising carbon dioxide and an epoxide. | 02-19-2015 |
| 528414000 | Material contains a Group IIB metal atom (Zn, Cd, Hg) | 2 |
| 20090306336 | Preparation and Use of Ultrahigh-Molecular-Weight Polycarbonates - The present invention relates to a process for preparation of polycarbonates with weight-average molar mass M | 12-10-2009 |
| 20110218321 | PROCESSES FOR PRODUCING POLYALKYLENE CARBONATES - Production of polyalkylene carbonates via polymerization of carbon dioxide with at least one epoxide of the general formula (I): | 09-08-2011 |
| 528416000 | Material contains a Group IIIA metal atom (Al, Ga, In, Tl) | 1 |
| 20100190955 | POLY(OXIRANE)S AND PROCESSES AND CATALYSTS FOR MAKING THEM - A catalyst composition for polymerizing oxiranes is provided that yields high molecular weight poly(oxiranes). The catalyst composition comprises: a hydrophobically modified particulate inorganic oxide; an aluminum alkyl complex; and a compound containing a Lewis basic free electron pair. Polymerization methods and poly(oxirane) polymers are also provided. | 07-29-2010 |
