| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 526095000 | Material contains transition metal oxide (other than peroxide) | 47 |
| 20100010178 | METHOD FOR THE PRODUCTION OF TELECHELIC POLYMERS - The present invention relates to the coupling of two polymer chains to give end group-functionalized polymers, the simultaneous precipitation of transition metals from polymer solutions and to the removal of halogen atoms from polymer chain ends. | 01-14-2010 |
| 20100160579 | PROCESS FOR PRODUCING BROADER MOLECULAR WEIGHT DISTRIBUTION POLYMERS WITH A REVERSE COMONOMER DISTRIBUTION AND LOW LEVELS OF LONG CHAIN BRANCHES - The present invention provides a polymerization process which is conducted by contacting an olefin monomer and at least one olefin comonomer in the presence of hydrogen and a metallocene-based catalyst composition. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, low levels of long chain branches, and a ratio of Mw/Mn from about 3 to about 6. | 06-24-2010 |
| 20150344603 | ELASTIC TERPOLYMER AND PREPARATION METHOD THEREOF - The present invention relates to an elastic terpolymer that can acquire good mechanical properties and elasticity (flexibility) at the same time, and a preparation method thereof. The elastic terpolymer, which is a copolymer comprising 40 to 70 wt % of ethylene, 20 to 50 wt % of a C | 12-03-2015 |
| 526096000 | Contains elemental transition metal or a non-oxide compound of a transition metal | 8 |
| 20100016526 | Process for the preparation of multimodal polyethylene resins - A two-stage cascade polymerization process for the production of multimodal polyethylene film resins with improved bubble stability is provided. The process comprises polymerizing ethylene or a mixture of ethylene and a C | 01-21-2010 |
| 20100056735 | Method For Producing Alkyl Polyglycol Carboxylic Acids And Polyglycol Dicarboxylic Acids - The invention relates to a method for producing alkyl polyglycol carboxylic acids and polyglycol dicarboxylic acids by means of direct oxidation. The aim of the invention is a method for producing compounds of the formula (Ia) and/or compounds of the formula (Ib), wherein R | 03-04-2010 |
| 20100093953 | POLYETHYLENE, PROCESS AND CATALYST COMPOSITION FOR THE PREPARATION THEREOF - A multimodal polyethylene having an inverse comonomer distribution, as well as a process carried out in a single reactor in the presence of a mixed catalyst composition comprising two different polymerization catalysts, are described. The multimodal polyethylene has a density of 0 915-0 970 g/cm | 04-15-2010 |
| 20100324235 | CATALYTIC COMPOSITION FOR PRODUCING 1-ALKENE AND ACRYLATES COPOLYMER AND METHOD FOR PRODUCING 1-ALKENE AND ACRYLATES COPOLYMER - The present invention relates to a catalytic composition for producing a 1-alkene-acrylate copolymer that includes a metal nano catalyst, and a method for producing a 1-alkene-acrylate copolymer. In the catalytic composition for producing a 1 -alkene-acrylate copolymer, since the content of the polar comonomer is high, it may be used to produce the 1-alkene-acrylate copolymer that has no crystallinity and is capable of being used as an optical material. The method for producing the 1-alkene-acrylate copolymer may be produced by using a simple process of a mild polymerization condition without a polymerization condition of high temperature and high pressure, and it is easy to control physical properties. | 12-23-2010 |
| 20110237763 | Systems and Methods for Fabricating Polymers - Disclosed herein are various methods and systems for gas and liquid phase polymer production. In certain embodiments, the methods comprise manipulating properties of polymers produced by adjusting the hydrogen feed rate. | 09-29-2011 |
| 20120108769 | MULTI-COMPONENT CATALYST SYSTEMS INCLUDING CHROMIUM BASED CATALYSTS AND POLYMERIZATION PROCESSES FOR FORMING POLYOLEFINS - Polymerization processes and polymers formed therefrom are described herein. The polymerization processes generally include contacting ethylene and propylene with a multi-component catalyst composition including a first catalyst component including a chromium oxide based catalyst and a second catalyst component selected from metallocene and Ziegler-Natta catalysts within a polymerization reaction vessel to form a random copolymer, wherein the second catalyst component exhibits a higher comonomer response than the first catalyst component. | 05-03-2012 |
| 526097000 | Contains non-transition elemental metal, hydride thereof, or carbon to non-transition metal atom bond | 2 |
| 20080293895 | Polymerization process using a supported, treated catalyst system - The present invention relates to a supported, treated catalyst system and its use in a process for polymerizing olefin(s). More particularly, it provides a supported, treated catalyst system produced by a process comprising the steps of: (a) forming a supported bimetallic catalyst system comprising a first catalyst component and a metallocene catalyst compound; and (b) contacting the supported bimetallic catalyst system of (a) with at least one methylalumoxane-activatable compound. | 11-27-2008 |
| 20080312389 | Process for the Preparation of a Catalyst Component for the Polymerization of an Olefin - The invention is directed to a process for the preparation of a catalyst component wherein a compound with formula Mg(OAlk) | 12-18-2008 |
| 526098000 | Contains non-metallic halogen-containing material | 2 |
| 20080306227 | Oxygen-Bridged Bimetallic Complex and Polymerization Process - An oxygen-bridged bimetallic complex of the general formula (I) | 12-11-2008 |
| 20090012246 | Polymerization Catalyst Comprising Amidine Ligand - The invention relates to a process for the preparation of a polymer comprising at least one aliphatic or aromatic hydrocarbyl C | 01-08-2009 |
| 526100000 | Contains non-metal organic N, O, S or P containing compound | 4 |
| 20110130526 | COPOLYMER COMPRISING ALKENE, ACRYLATE AND UNSATURATED ACID ANHYDRIDE, AND METHOD FOR PREPARING THE SAME - The present invention provides a copolymer that includes at least one alkene monomer, at least one acrylate monomer and at least one the unsaturated acid anhydridge monomer, and a method of preparing the same. | 06-02-2011 |
| 20120302707 | CHROMIUM CATALYSTS FOR OLEFIN POLYMERIZATION - Mineral oil is added to a supported chromium catalyst in amounts which maintain a free flowing particulate material. Chromium catalysts so treated, provide polyethylene in a gas phase ethylene polymerization process with reduced reactor fouling or static. | 11-29-2012 |
| 20120316297 | Modified phosphinimine catalysts for olefin polymerization - Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound. | 12-13-2012 |
| 20150119538 | GAS PHASE POLYMERISATION OF ETHYLENE - The invention relates to a process for the production of polyethylene by gas phase polymerisation of ethylene in the presence of a supported chromium oxide based catalyst which is modified with an amino alcohol wherein the molar ratio of amino alcohol:chromium ranges between | 04-30-2015 |
| 526101000 | Two or more transition metal oxides, at least two of said oxides being other than oxides of Ti, Zr, Hf, or Th | 3 |
| 20090292086 | MULTI-METAL OXIDE CATALYST AND METHOD FOR PRODUCING (METH)ACRYLIC ACID BY USING THE SAME - The present invention provides a Mo—Bi—Nb based composite metal oxide (with the proviso that Te is not included); a method for producing (meth)acrylic acid from at least one reactant selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether, in which a Mo—Bi—Nb based composite metal oxide (with the proviso that Te is not included) is used as a catalyst; and a reactor used for producing (meth)acrylic acid from at least one reactant selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether, in which a Mo—Bi—Nb based composite metal oxide (with the proviso that Te is not included) is used as a catalyst. Further, the present invention provides a method for producing (meth)acrylic acid from at least one reactant selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether by using a Mo—Bi—Nb based composite metal oxide as a catalyst, without any additional process of convening (meth)acrolein into (meth)acrylic acid. | 11-26-2009 |
| 20100222527 | Polyethylene film having improved barrier properties and methods of making same - A method comprising (a) providing a catalyst comprising chromium and a support having a pore volume of from about 1.7 ml/g to about 3.5 ml/g and a surface area of from about 450 m | 09-02-2010 |
| 20150065667 | SUPPORTED METAL OXIDE DOUBLE ACTIVE CENTER POLYETHYLENE CATALYST, PROCESS FOR PREPARING THE SAME AND USE THEREOF - The present invention relates to a supported hybrid vanadium-chromium-based catalyst, characterized in the catalyst is supported on a porous inorganic carrier and a V active site and a inorganic Cr active site are present on the porous inorganic carrier at the same time. The present invention further relates to a process for producing a supported hybrid vanadium-chromium-based catalyst. The invention also provides the preparation method of the catalyst, titanium or fluorine to compounds, vanadium salt and chromium salt according to the proportion, different methods of sequence and load on the inorganic carrier, after high temperature roasting, still can further add organic metal catalyst promoter prereduction activation treatment on it. The catalyst of the present invention can be used for producing ethylene homopolymers and ethylene/α-olefin copolymers. The hybrid vanadium-chromium-based catalyst can have high activity and produce polyethylene polymers having the properties of broad molecular weight distribution (Part of the products are bimodal distribution) and excellent α-olefin copolymerization characteristic. | 03-05-2015 |
| 526102000 | Contains non-transition heavy metal or compound thereof | 1 |
| 20100280199 | COMPOSITIONS THAT CAN PRODUCE POLYMERS - This invention provides a compositions that are useful for polymerizing at least one monomer into at least one polymer. | 11-04-2010 |
| 526103000 | Group VIII metal oxide (Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) | 1 |
| 20140235803 | PARTICLES COATED WITH ZWITTERIONIC POLYMERS - Nanoparticles zwitterionic polymers grafted thereto or grafted therefrom, and methods for making and using the nanoparticles. Zwitterionic nanogels, and methods for making and using the nanogels. | 08-21-2014 |
| 526104000 | Group VIB metal oxide (Cr, Mo, W) | 16 |
| 526105000 | Contains non-transition elemental metal, hydride thereof, or nontransition metal to carbon atom bond | 2 |
| 20110009577 | ENHANCED CONDENSED MODE OPERATION IN METHOD OF PRODUCING POLYOFEFINS WITH CHROMIUM BASED CATALYSTS - A gas phase polymerization process for producing a polyethylene polymer including polymerizing ethylene and optionally at least one α-olefin comonomer in a fluidized bed reactor under condensed mode operating conditions using a Cr | 01-13-2011 |
| 20120041160 | ADDITIVES TO CHROMIUM CATALYST MIX TANK - Systems and methods for the maintenance of active chromium-based catalysts and their use in polymerization processes are described. In one embodiment, a system for the introduction of multiple polymerization components to activate a chromium based catalyst within a mix tank is described. Other described features may include materials and methods to purify the liquid medium of a catalyst slurry so that the catalyst slurry maintains a high level of activity. The active chromium-based catalyst may provide polyolefins with a number of desirable properties in a reliable, consistent, and predictable manner. | 02-16-2012 |
| 526106000 | Metal oxide is of chromium | 14 |
| 20080269437 | Catalyst Comprising Chromium and Zirconium for the Polymerization and/or Copolymerization of Olefins - Catalyst for the polymerization and/or copolymerization of olefins which is obtainable by application to a finely divided inorganic support and concluding calcination at temperatures of from 350 to 1050° C. and has a chromium content of from 0.1 to 5% by weight and a zirconium content of from 0.5 to 10% by weight, in each case based on the element in the finished catalyst, with the molar ratio of zirconium to chromium being from 0.6 to 5. | 10-30-2008 |
| 20090005522 | Process for Preparing a Poly-1-Olefin in the Presence of a Ziegler Catalyst - The invention relates to a process for preparing a poly-1-olefin by polymerization of a 1-olefin of the formula R | 01-01-2009 |
| 20090198026 | Preparation of supported chromium catalyst and polymerization process - A process for the preparation of a chromium-type supported olefin polymerization catalyst. A fluidized bed of support particles in an inert carrier gas is established. A chromium (III) compound is added to the fluidized support particles to provide a supported catalyst component. The supported catalyst component is activated to convert at least a portion of the chromium (III) to Chromium (VI). The chromium (III) containing particles may be recovered from the fluidized bed and then activated or they may be activated in the fluidized bed. Also the support particles can be treated in the fluidized bed with other treatment agents. The support particles may be pretreated with a solution of a boron treating agent prior to incorporation of the support in the fluidized bed. | 08-06-2009 |
| 20090312506 | PRODUCTION OF POLYETHYLENE - The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times. | 12-17-2009 |
| 20110201769 | Copolymers Of Ethylene And At Least One Other 1-Olefin, And Process For Their Preparation - Ethylene copolymers composed of ethylene units and units composed of at least one other 1-olefin whose density is from 0.940 to 0.955 g/cm | 08-18-2011 |
| 20110313116 | Polymerization Process Utilizing Hydrogen - Ethylene polymerization processes and polymers formed from the same are discussed herein. The ethylene polymerization processes generally include introducing ethylene monomer into a polymerization reaction zone; introducing a chromium oxide based catalyst into the polymerization reaction zone; introducing a quantity of hydrogen into the polymerization reaction zone; and contacting the ethylene monomer with the chromium oxide based catalyst in the polymerization reaction zone in the presence of hydrogen to form polyethylene, wherein the polyethylene formed in the presence of hydrogen exhibits an MI | 12-22-2011 |
| 20120022223 | POLYOLEFIN GAS PHASE POLYMERIZATION WITH 3-SUBSTITUTED C4-10-ALKENE - An alkene interpolymer is prepared by polymerizing at least one 3-substituted C | 01-26-2012 |
| 20120238714 | PROCESS FOR THE POLYMERISATION OF OLEFINS - The present invention relates to a process for polymerisation of olefins, in particular gas phase polymerisation of olefins, with the aid of a supported chromium oxide based catalyst. | 09-20-2012 |
| 20130090437 | CATALYST SUPPORTS, CATALYSTS AND THEIR MANUFACTURE AND USE - A process for preparation of silica xerogel catalyst support particles having high surface areas involves ageing a silica hydrogel at a pH from 3 to 5 and at a temperature of 45° C. or more. The ageing at low pH leads to a silica gel which may be converted to a xerogel having a pore volume of 1.5 cm | 04-11-2013 |
| 20130203947 | PROCESS FOR THE ACTIVATION OF A SUPPORTED CHROMIUM OXIDE BASED CATALYST - The present invention relates to a process for the activation of a supported chromium oxide based catalyst. | 08-08-2013 |
| 20130245209 | METHOD FOR ACTIVATION OF CHROMIUM CONTAINING CATALYST PRECURSOR FOR POLYMERIZATION AND THE RESULTING POLYMERIZATION CATALYST - Method for activation of chromium containing catalyst precursor for polymerization and improved polymerization catalyst resulting The instant invention relates to an activation of a polymerization catalyst precursor by heat treatment comprising a support material and a catalyst precursor deposited thereon in a fluidized bed activator and to the use of the activated polymerization catalyst in the manufacture of polyolefins. The Method is performed in a cylindrical activator ( | 09-19-2013 |
| 20130310526 | Process for Preparing Catalysts and Catalysts made thereby - A process for preparing a catalyst, and catalysts prepared thereby. The process includes selecting a catalyst support and mixing it with one or more chromium containing compounds oxidizable to a Cr | 11-21-2013 |
| 20160046739 | A POLYMERIZATION PROCESS FOR THE PRODUCTION OF HIGH DENSITY POLYETHYLENE - The invention relates to a polymerization process for the production of high density polyethylene by polymerization of ethylene in the presence of a catalyst composition comprising a chromium compound, a support material wherein the alcohol is a primary alcohol having the formula (I) wherein R, R′ and R″ are the same or different and respectively represent a linear or branched N alkyl, cycloalkyl, phenyl or phenyl containing radicals comprising from 5 to 15 carbon atoms and wherein only one of R, R′ or R″ can be a hydrogen radical and/or wherein the alcohol is a secondary alcohol and/or a secondary cyclic alcohol. The catalyst composition may also comprise a titanium compound. The high density polyethylene may be applied in the production of blow molded articles. | 02-18-2016 |
| 20160068623 | A Polyethylene Composition and Articles Made Therefrom - A polyethylene composition comprising at least 95 percent by weight of the units derived from ethylene; less than 5 percent by weight of units derived from one or more α-olefin comonomers; wherein said polyethylene composition has a density in the range of 0.930 to 0.945 g/cm | 03-10-2016 |
| 526107000 | Group IVB metal oxide (Ti, Zr, Hf) | 9 |
| 20080227935 | Catalyst System Consisting of a Carrier and of a Co-Catalyst - The invention relates to methods for producing cesium hydroxide solutions during which: cesium-containing ore is disintegrated with sulfuric acid while forming a cesium aluminum sulfate hydrate, which is poorly soluble at low temperatures; the formed cesium alum is separated away in the form of a solution from the solid ore residues; the aluminum is precipitated out of the cesium alum solution while forming a cesium sulfate solution; the formed cesium sulfate solution is reacted with barium hydroxide or stontium hydroxide while forming a cesium hydroxide solution, and; the formed cesium hydroxide solution is concentrated and purified. | 09-18-2008 |
| 20090018290 | Preparation of Supported Silyl-Capped Silica-Bound Anion Activators and Associated Catalysts - A method for the preparation of olefin polymerization catalysts that are the reaction products of the catalytic reaction of surface hydroxyls of a support with a trialkyl silane to afford hydrogen and the corresponding surface bound alkyl silyl ether and at the same time with a strong Lewis acid which support is converted to a silica bound anion that in a second step is fully converted by reaction with QM | 01-15-2009 |
| 20090221770 | POLYDENTATE HETEROATOM LIGAND CONTAINING METAL COMPLEXES, CATALYSTS AND METHODS OF MAKING AND USING THE SAME - Metal complexes comprising certain polydentate heteroatom containing ligands, catalysts, and coordination polymerization processes employing the same are suitably employed to prepare polymers having desirable physical properties. | 09-03-2009 |
| 20100130706 | COPOLYMER COMPRISING ALKENE, ACRYLATE AND UNSATURATED ACID ANHYDRIDE, AND METHOD FOR PREPARING THE SAME - The present invention provides a copolymer that includes at least one alkene monomer, at least one acrylate monomer and at least one the unsaturated acid anhydride monomer, and a method of preparing the same. | 05-27-2010 |
| 20100190936 | Polymerization process using a mixed catalyst system - Polyethylene is made by (co)polymerizing ethylene in a gas-phase reactor using a mixed catalyst system comprising a chromium catalyst supported on silica and a Group 4 transition metal catalyst, separately supported on silica. The Group 4 transition metal catalyst is defined by the formula shown, wherein M is a Group 4 metal, PI is a phosphinimide or ketimide ligand (shown), L is a monoanionic ligand which is a cyclopentadienyl or a bulky heteroatom type ligand, m is 1 or 2, n is 0 or 1, and p is an integer. The mixed catalyst system gives access to polyethylene having a broad or bimodal molecular weight distribution. In the copolymerization of ethylene, reversed or partially reversed comonomer distribution is achieved: the supported Group 4 component provides polymer segments having higher molecular weight and also higher comonomer incorporation than polymer segments produced at the supported chromium sites. | 07-29-2010 |
| 20100204419 | POLYMERISATION METHOD - Disclosed herein is a method of forming a polymer, wherein the polymer is formed by a radical polymerisation reaction initiated by a solid oxide compound. | 08-12-2010 |
| 20100240845 | Catalyst component for the polymerization of olefins - Catalyst component for the polymerization of olefins comprising Mg, Ti, halogen and an electron donor is obtained by a batch process comprising: (A) A first step comprising reacting an adduct of formula MgCl | 09-23-2010 |
| 20110098422 | POLYETHYLENE COMPOSITIONS HAVING IMPROVED PROPERTIES - Polyethylene compositions having improved properties are provided. In one aspect, a polyethylene composition having a long chain branching index (g′ | 04-28-2011 |
| 20110172379 | Ziegler-Natta Catalyst Systems and Polymers Formed Therefrom - Processes of forming catalyst systems, catalyst systems and polymers formed therefrom are described herein. The processes generally include providing a first compound including a magnesium dialkoxide, contacting the first compound with a second compound to form a solution of reaction product “A”, wherein the second compound is generally represented by the formula: | 07-14-2011 |
