Patent application number | Description | Published |
20090062434 | METHOD OF IMPROVING AFFINITY BETWEEN FILLER AND POLYMERS HAVING A LOW DEGREE OF UNSATURATION - Provided is a composition comprising at least one polymer having a degree of unsaturation of no more than about 50 mol %; a filler selected from the group consisting of carbon black, silica, and mixtures thereof; and a polymeric additive comprising a functional end group reactive with said filler, wherein said polymeric additive has a degree of unsaturation of no more than about 50 mol % and a number average molecular weight between about 1,000 and about 25,000. The composition may optionally contain one or more polymers having a degree of unsaturation of more than 50 mol %. The composition may be particularly useful as a component for a tire. | 03-05-2009 |
20090143551 | NICKEL-BASED CATALYSTS FOR PREPARING HIGH CIS 1,4-POLYDIENES - A nickel-carbene polymerization catalyst system for preparing high cis polydienes is provided. The catalyst system comprises (a) a nickel N-heterocyclic carbene complex, (b) an organoaluminum compound, (c) a fluorine-containing compound, and (d) optionally, an alcohol. Also provided is a process for producing a polydiene comprising reacting a conjugated diene in the presence of a polymerization catalyst comprising (a) a nickel N-heterocyclic carbene complex, (b) an organoaluminum compound, (c) a fluorine-containing compound, and (d) optionally, an alcohol. | 06-04-2009 |
20100204437 | POLYCARBONATES MADE USING HIGHLY SELECTIVE CATALYSTS - Poly(propylene carbonates) are prepared from propylene oxide and CO | 08-12-2010 |
20100286348 | HYDROXYARYL FUNCTIONALIZED POLYMERS - Vulcanizates with desirable properties can be obtained from compounds incorporating polymers that include hydroxyl group-containing aryl functionalities. The functionalities can be incorporated by using any or all of appropriate initiators, monomers and optional terminating compounds. Such polymers exhibit excellent interactivity with both conventional and non-conventional fillers. | 11-11-2010 |
20110028632 | Method of Making Hydroxyaryl-Functionalized Interpolymer - Cationic techniques can be used to polymerize monomers that include a class of hydroxyaryl compounds so as to provide polymers that exhibit desirable properties including, but not limited to, reduced hysteresis. Compositions such as vulcanizates in which such polymers can be utilized and products such as tire components that incorporate and/or are manufactured from such compositions also are provided. | 02-03-2011 |
20110184137 | CATALYSTS FOR PREPARING CIS 1,4-POLYDIENES - A polymerization catalyst composition for preparing cis 1,4-polydienes is provided. The catalyst composition comprises (a) a metal-containing compound, said metal being a transition metal or a lanthanide metal; (b) a carbene, (c) an alkylating agent, and optionally (d) a halogen-containing compound with the proviso that the halogen-containing compound must be present when none of the metal-containing compound and the alkylating agent contain a labile halogen atom. Also provided is a process for producing a polydiene comprising reacting a conjugated diene in the presence of the polymerization catalyst composition. | 07-28-2011 |
20110263794 | New Polymers And Use Thereof In Preparation Of High Impact Polymeric Compositions - Terminally functionalized polymers that are living or pseudo-living polymers reacted with certain allyl glycidyl ethers, or certain allylhalosilanes or combinations thereof, and a process for preparing the terminally functionalized polymers. Rubber-modified polymeric compositions comprising the terminally functionalized polymers. | 10-27-2011 |
20120059113 | PROCESSING OF RUBBER COMPOSITIONS INCLUDING SILICEOUS FILLERS - Vulcanizates with desirable properties can be obtained from compositions incorporating polymers that include hydroxyl group-containing aryl functionalities, silica or other particulate filler(s) that contain or include oxides of silicon and a compound that includes multiple hydroxyl groups. The compound can act to disrupt the interactivity of the functionalities and the particulate filler particles during processing of the composition, thereby facilitating processing of the composition. | 03-08-2012 |
20120065315 | ELASTOMERIC COMPOUNDS HAVING INCREASED COLD FLOW RESISTANCE AND METHODS PRODUCING THE SAME - Elastomeric compounds having increased cold flow resistance may be obtained by utilizing from 10-100 phr of a functionalized rubbery polymer containing specified types of functionalizing units, at least 0.01 phr of a multivalent metal organic salt and 0-90 phr of at least one additional rubbery polymer. | 03-15-2012 |
20120093706 | COPOLYMERIZATION OF PROPYLENE OXIDE AND CARBON DIOXIDE AND HOMOPOLYMERIZATION OF PROPYLENE OXIDE - Copolymers of propylene oxide and carbon dioxide and homopolymers of propylene oxide are made using two dimensional double metal cyanide complexes having the formula Co[M(CN) | 04-19-2012 |
20120130009 | POLYMERS FUNCTIONALIZED WITH HYDROXYL GROUP-CONTAINING DIPHENLYETHYLENE - Vulcanizates with desirable properties can be obtained from compounds incorporating polymers that include hydroxyl group-containing diphenylethylene-type functionalities. The functionalities can be incorporated by using any or all of appropriate initiators, monomers and optional terminating compounds. Such polymers exhibit excellent interactivity with both conventional and non-conventional fillers. | 05-24-2012 |
20120136091 | METHOD OF MAKING HYDROXYARYL-FUNCTIONALIZED INTERPOLYMER BY FREE RADICAL INITIATED POLYMERIZATION - Radical polymerization techniques can be used to polymerize monomers that include a class of hydroxyaryl compounds so as to provide polymers that exhibit desirable properties including, but not limited to, reduced hysteresis. Compositions such as vulcanizates in which such polymers can be utilized and products such as tire components that incorporate and/or are manufactured from such compositions also are provided. | 05-31-2012 |
20120136128 | ANIONIC POLYMERIZATION INITIATORS AND PROCESSES - A group of compounds defined by the general formula (I) can be used to anionically initiate polymerization of unsaturated monomers. In the formula, M is an alkali metal atom, R | 05-31-2012 |
20120196995 | PROCESS FOR PRODUCING POLYDIENES - A process for preparing a polydiene, the process comprising the step of: polymerizing conjugated diene monomer in the presence of a (hydrocarbyloxyhydrocarbyl)amine, where said step of polymerizing employs a lanthanide-based catalyst system. | 08-02-2012 |
20120255661 | PROCESSES FOR PREPARATION OF CYCLIC AND ACYCLIC DIENE COPOLYMER AND RUBBER COMPOSITION - A process for preparing a copolymer of an acyclic conjugated diene and a cyclic conjugated diene using a polymerization catalyst system comprising a transition metal compound or a lanthanide metal compound, an alkylating agent, and an inorganic halide alcoholate, and rubber compositions and tires comprising the same. The copolymer contains at least 90% acyclic conjugated diene monomer, has a number average molecular weight of between 40,000 and 300,000, and has a cis-bond content of at least 92%. | 10-11-2012 |
20130035437 | RUBBER COMPOSITIONS INCLUDING SILICEOUS FILLERS - Vulcanizates with desirable properties can be obtained from compositions incorporating polymers that include hydroxyl group-containing aryl functionalities, silica or other particulate filler(s) that contain or include oxides of silicon and a group or compound that can act to covalently bond the filler particles and the polymer. The group can be provided as a substituent of the filler particle, or a discreet compound can be provided in the composition. | 02-07-2013 |
20130090423 | HYDROXYL GROUP-CONTAINING METHYLSTYRENE AND POLYMERS INCORPORATING SAME - Vulcanizates with desirable properties can be obtained from compounds incorporating polymers that include hydroxyl group-containing α-methylstyrene functionalities. The functionalities can be incorporated by using any or all of appropriate initiators, monomers and optional terminating compounds. Such polymers exhibit excellent interactivity with both conventional and non-conventional fillers. | 04-11-2013 |
20130137838 | NICKEL-BASED CATALYST COMPOSITION - In general the present invention provides a process for forming conjugated diene polymer, the process comprising the step of polymerizing conjugated diene monomer in the presence of a catalytically effective amount of a catalyst composition formed by combining (a) a nickel-containing compound, (b) an alkylating agent, (c) a fluorine-containing compound, (d) a carboxylic acid, and (e) an alcohol. | 05-30-2013 |
20130165623 | COPOLYMERIZATION OF PROPYLENE OXIDE AND CARBON DIOXIDE AND HOMOPOLYMERIZATION OF PROPYLENE OXIDE - Copolymers of propylene oxide and carbon dioxide and homopolymers of propylene oxide are made using two dimensional double metal cyanide complexes having the formula Co[M(CN) | 06-27-2013 |
20140031502 | Metal Complex Catalysts And Polymerization Methods Employing Same - A novel class of aminidate complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers. | 01-30-2014 |
20140031503 | Lanthanide Complex Catalyst And Polymerization Method Employing Same - A novel class of lanthanide metal phenoxyimine complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers. | 01-30-2014 |
20140039126 | Lanthanide Complex Catalyst And Polymerization Method Employing Same - A novel class of lanthanide metal salen complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers. | 02-06-2014 |
20140073751 | Processes For The Preparation Of High-Cis Polydienes - The present disclosure is directed towards a solution or bulk polymerization process for preparing high-cis polydienes that utilizes at least one vinyl aromatic compound as a molecular weight regulator. The disclosed solution or bulk polymerization processes are useful for preparing high-cis polydienes with a Mooney viscosity between 30 and 55 while allowing the use of lower amounts of catalyst. | 03-13-2014 |
20140288250 | PROCESS FOR PREPARATION OF CYCLIC AND ACYCLIC DIENE COPOLYMER AND RUBBER COMPOSITION - A process for preparing a copolymer of an acyclic conjugated diene and a cyclic conjugated diene using a polymerization catalyst system comprising a transition metal compound or a lanthanide metal compound, an alkylating agent, and an inorganic halide alcoholate, and rubber compositions and tires comprising the same. The copolymer contains at least 90% acyclic conjugated diene monomer, has a number average molecular weight of between 40,000 and 300,000, and has a cis-bond content of at least 92% | 09-25-2014 |
20140316086 | NICKEL-BASED CATALYST COMPOSITION - In general the present invention provides a process for forming conjugated diene polymer, the process comprising the step of polymerizing conjugated diene monomer in the presence of a catalytically effective amount of a catalyst composition formed by combining (a) a nickel-containing compound, (b) an alkylating agent, (c) a fluorine-containing compound, (d) a carboxylic acid, and (e) an alcohol. | 10-23-2014 |
20140378630 | Bulk Polymerization Process For Producing Polydienes - A process for preparing a polydiene, the process comprising the steps of: polymerizing conjugated diene monomer with a metallocene complex catalyst system within a polymerization mixture that includes less than 20% by weight of solvent based on the total weight of the polymerization mixture, where the metallocene complex catalyst system includes the combination or reaction product of: (a) metallocene complex, (b) an alkylating agent, and optionally (c) a non-coordinating anion. | 12-25-2014 |
20150018488 | Polymers Functionalized With Lactones Or Thiolactones Containing A Protected Amino Group - A method for preparing a functionalized polymer, the method comprising the steps, of: (i) polymerizing monomers to form a reactive polymer, and (ii) reacting the reactive polymer with a lactone or thiolactone that contains a protected amino group. | 01-15-2015 |
20150031845 | Process For Producing Polydienes - A method for producing a polydiene, the method comprising the steps of (i) forming an active catalyst by combining a lanthanide-containing compound, an alkylating agent, and a halogen source in the substantial absence of an organosulfide; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and an organosulfide. | 01-29-2015 |
20150141582 | Hydroxyaryl Functionalized Polymers - Vulcanizates with desirable properties can be obtained from compounds incorporating polymers that include hydroxyl group-containing aryl functionalities. The functionalities can be incorporated by using any or all of appropriate initiators, monomers and optional terminating compounds. Such polymers exhibit excellent interactivity with both conventional and non-conventional fillers. | 05-21-2015 |
20150203662 | RUBBER COMPOSITIONS INCLUDING SILICEOUS FILLERS - Vulcanizates with desirable properties can be obtained from compositions incorporating polymers that include hydroxyl group-containing aryl functionalities, silica or other particulate filler(s) that contain or include oxides of silicon and a group or compound that can act to covalently bond the filler particles and the polymer. The group can be provided as a substituent of the filler particle, or a discreet compound can be provided in the composition. | 07-23-2015 |
20150252063 | HYDROXYL GROUP-CONTAINING METHYLSTYRENE AND POLYMERS INCORPORATING SAME - Vulcanizates with desirable properties can be obtained from compounds incorporating polymers that include hydroxyl group-containing α-methylstyrene functionalities. The functionalities can be incorporated by using any or all of appropriate initiators, monomers and optional terminating compounds. Such polymers exhibit excellent interactivity with both conventional and non-conventional fillers. | 09-10-2015 |
20150259361 | Organometallic Catalyst Complex And Polymerization Method Employing Same - A novel class of organometallic complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers that include both olefins and polyenes. | 09-17-2015 |
20150291711 | Organometallic Complex Catalyst And Polymerization Method Employing Same - A novel class of organometallic complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers that include both olefins and polyenes. | 10-15-2015 |
20150299350 | Processes For The Preparation Of High-Cis Polydienes - Disclosed herein are solution polymerization processes for producing a high-cis polydiene. The processes include polymerizing at least one conjugated diene monomer in an organic solvent in the presence of at least one thiol compound and a lanthanide-based catalyst composition to produce a polydiene having a cis-1,4-linkage content of 90-99%. The at least one thiol compound is represented by the general formula R—S—H, where R is a hydrocarbyl group or a substituted hydrocarbyl group. The lanthanide-based catalyst composition comprises (a) a lanthanide compound, (b) an alkylating agent, and (c) a halogen source, where (c) may optionally be provided by (a), (b), or both (a) and (b). The molar ratio of the at least one thiol compound to the lanthanide compound used in the polymerization process ranges from 0.01:1 to 100:1. Improved solution polymerization processes regarding the same are also disclosed herein. | 10-22-2015 |
20150307658 | COPOLYMERIZATION OF PROPYLENE OXIDE AND CARBON DIOXIDE WITHOUT PRODUCTION OF PROPYLENE CARBONATE - Copolymers of propylene oxide and carbon dioxide and homopolymers of propylene oxide are made using two dimensional double metal cyanide complexes having the formula Co[M(CN) | 10-29-2015 |