Patent application number | Description | Published |
20080293858 | METHOD FOR MAKING ALKOXY-MODIFIED SILSESQUIOXANES - A method is presented for making alkoxy-modified silsesquioxanes (AMS) or co-alkoxy-modified silsesquioxanes (co-AMS,) comprising the steps of (a) combining as a reaction mixture (i) water, (ii) an acid-stable solvent for the water, (iii) a solid strong cationic hydrolysis and condensation catalyst, and (iv) a trialkoxysilane compound, (b) allowing the reaction mixture to react for about 0.5 hours to about 200 hours to form the alkoxy-modified silsesquioxanes; and (c) recovering the alkoxy-modified silsesquioxanes from the reaction mixture. The use of solid strong cationic catalysts in this reaction system is advantageous because they remain as solids throughout the reaction, allowing simplified separation of the solid catalyst from the soluble AMS or co-AMS products, resulting in total or near total recovery of the AMS or co-AMS products, the products being free of, or substantially free of residual acid catalyst, as well as virtual total recovery of the catalyst for recycling. The improved AMS and co-AMS compounds, vulcanizable rubber compounds containing them, and a pneumatic tire having a component made from the vulcanized rubber compounds are also presented. | 11-27-2008 |
20080308204 | FUNCTIONAL POLYMERS PREPARED WITH SULFUR-CONTAINING INITIATORS - A method for forming a polymer including a sulfur-containing functional group, the method comprising introducing a sulfur-containing initiator defined by the formula | 12-18-2008 |
20090054582 | TREAD COMPOSITIONS WITH IMPROVED DYNAMIC STORAGE MODULUS - A process for forming a tire component, the process comprising the steps of introducing a vulcanizable polymer, a curative, a first carbon black characterized by an iodine adsorption number, per ASTM D1510, that is greater than 60 g/kg, and a second carbon black characterized by an iodine adsorption number, per ASTM D1510, that is less than 60 g/kg to form a vulcanizable composition, fabricating a tire component from the vulcanizable composition, and curing the tire component. | 02-26-2009 |
20090126845 | SILOXANE MODIFIED ELASTOMERS - The present invention relates to coating compositions for use on the surface of elastomeric articles and materials. The compositions are useful in the manufacture of rubber goods such as tires. | 05-21-2009 |
20090165913 | AMINO ALKOXY-MODIFIED SILSESQUIOXANE ADHESIVES FOR IMPROVED METAL ADHESION AND METAL ADHESION RETENTION TO CURED RUBBER - Amino alkoxy-modified silsesquioxanes (amino AMS), and/or amino co-AMS compounds that also comprise a mercaptosilane or a blocked mercaptosilane, are excellent adhesives for coating plated or unplated metal wire for adherence of the wire to a rubber stock. The amino AMS and/or the amino/mercaptan co-AMS adhesives can be used with all types of rubber and there is no requirement for the use of special adhesive additives to the rubber vulcanizates, such as, but not limited to, cobalt, resins and high sulfur levels. In particular, the use of amino AMS and/or amino/mercaptan co-AMS compounds as adhesives for bonding wire to rubber also improves the adherence performance of the reinforcements to obtain sufficient bonding that is resistant to degradation over the course of time, especially resistance to thermal aging and/or thermo-oxidizing aging, in particular corrosion in the presence of water. | 07-02-2009 |
20090171014 | METHODS OF MAKING BLOCKED-MERCAPTO ALKOXY-MODIFIED SILSESQUIOXANE COMPOUNDS - Methods of forming blocked-mercapto alkoxy-modified silsesquioxanes are provided. The blocked-mercapto alkoxy-modified silsesquioxane compounds contain an alkoxysilane group that participates in an alkoxysilane-silica reaction as a silica dispersing agent in rubber, with the release of zero to about 0.1% by weight of the rubber as alcohol (a volatile organic compound (VOC)), during compounding and further processing. The blocked-mercapto alkoxy-modified silsesquioxane compounds also contain a blocked mercapto group which, when de-blocked, allows the mercapto group to interact with the polymer(s) in a rubber composition. Further described are rubber compounds containing the blocked-mercapto alkoxy-modified silsesquioxanes. | 07-02-2009 |
20090203844 | FUNCTIONALIZED POLYMERS AND IMPROVED TIRES THEREFROM - A method of forming a functionalized polymer, the method comprising reacting a living polymer with a compound defined by the formula | 08-13-2009 |
20090203929 | AMINO ALKOXY-MODIFIED SILSESQUIOXANES AND METHOD OF PREPARATION - An amino alkoxy-modified silsesquioxane (AMS) comprising one or more compounds selected from the group consisting of an amino AMS, an amino/mercaptan co-AMS, an amino/blocked mercaptan co-AMS, mixtures thereof, and a weak acid-neutralized solid or aqueous solution thereof, and a method of making the amino AMS, are presented. The compounds are useful in compounding, processing, cure and storage of silica-reinforced rubbers because they contain low levels of volatile organic compounds (VOC). | 08-13-2009 |
20090326161 | FUNCTIONALIZED POLYMERS AND IMPROVED TIRES THEREFROM - A tire component comprising a vulcanized residue of a functionalized polymer defined by the formula I | 12-31-2009 |
20090326255 | METHOD FOR MAKING ALKOXY-MODIFIED SILSESQUIOXANES AND AMINO ALKOXY-MODIFIED SILSESQUIOXANES - A method is presented for making an amino alkoxy-modified silsesquioxane (amino AMS) comprising one or more compounds selected from the group consisting of an amino-AMS, an amino/mercaptan co-AMS, an amino/blocked mercaptan co-AMS, and mixtures of these. The use of solid strong cationic catalysts in this reaction system is advantageous because the catalyst remains as a solid throughout the reaction, allowing simplified separation of the solid catalyst from the soluble amino AMS or amino co-AMS products, resulting in total or near total recovery of the amino AMS or amino co-AMS products, as well as virtual total recovery of the catalyst for recycling. The use of the solid strong cationic catalysts is advantageous because it results in amino AMS products that are free of, or substantially free of, residual acid catalyst. | 12-31-2009 |
20100000639 | VULCANIZABLE COMPOSITIONS AND TIRE TREADS PREPARED THEREWITH - A method for preparing a tire tread, the method comprising vulcanizing a vulcanizable composition comprising a rubber component including a functionalized polymer and a cure system, where the cure system includes sulfur and a disulfide compound represented by the formula I | 01-07-2010 |
20100004361 | METHOD TO IMPROVE COLD FLOW RESISTANCE OF POLYMERS - A method for preparing a polymeric composition, the method comprising providing a polymer cement including a polymer and a solvent, introducing an acetal or ketal of an alditol with the polymer cement, and isolating at least a portion of the polymer and the acetal or ketal of an alditol from the solvent to provide a polymeric composition including the polymer and the acetal or ketal of an alditol. | 01-07-2010 |
20100016496 | PROCESS FOR PRODUCTION OF MODIFIED CONJUGATED DIENE POLYMERS, MODIFIED CONJUGATED DIENE POLYMERS PRODUCED BY THE PROCESS, RUBBER COMPOSITIONS, AND TIRES - The invention provides a process for producing a modified conjugated diene based polymer which attains favorable interaction between a rubber component and carbon black and/or silica, thereby improving dispersibility of the fillers, and which exhibits excellent properties such as heat-buildup-suppressing performance, fracture characteristics, and wear resistance; a modified conjugated diene based polymer produced through the process; a rubber composition containing the diene polymer; and a tire produced from the rubber composition and exhibiting the above properties. The process for producing a modified conjugated diene based polymer includes a step (a) of reacting a silicon compound with a conjugated diene based polymer having an active end so that the reaction takes place at the active end, the silicon compound having a protected primary amino group in the molecule thereof and a bi-functional silicon atom to which a hydrocarbyloxy group and a reactive group are bonded, to thereby modify the active end, and a step (b) of performing condensation reaction which involves the compound having a bi-functional silicon atom, in the presence of a titanium compound serving as a titanium-based condensation-accelerating agent. | 01-21-2010 |
20100036026 | METHOD TO IMPROVE COLD FLOW RESISTANCE OF POLYMERS - A method for reducing the cold flow of a polymeric composition of matter by introducing polymer with the combination or reaction product of (i) an acetal or ketal of an alditol and (ii) (a) a hydrocarbylated boric acid, (b) an organoaluminum compound, or (c) both a hydrocarbylated boric acid and an organoaluminum compound. | 02-11-2010 |
20100041797 | USE OF SULFUR CONTAINING INITIATORS FOR ANIONIC POLYMERIZATION OF MONOMERS - A vulcanized rubber composition comprising the vulcanization product of a functional polymer, where the functional polymer is defined by the formula | 02-18-2010 |
20100063178 | Esters Of Cyclohexane Polycarboxylic Acids As Plasticizers In Rubber Compounds - It has been discovered that the use of a plasticizer, an ester of a cyclohexanepolycarboxylic acid, especially a 1,2-cyclohexanedicarboxylic acid ester, that is environmentally non-toxic, can replace environmentally unfriendly phthalate plasticizers, such as dioctyl phthalates used in vulcanizable rubber compositions, especially for tires, on a one to one weight basis (phr) without sacrificing beneficial rubber properties. | 03-11-2010 |
20100093920 | NICKEL CATALYST SYSTEM FOR THE PREPARATION OF HIGH CIS POLYBUTADIENE - Embodiments relate to a novel catalyst composition comprising a transition metal-containing compound, a PNP compound, an alkylating agent and a fluorine containing compound. Other embodiments relate to a method of polymerizing a diene monomer in the presence of the novel composition to form a diene-containing polymer having greater than 90% cis content. | 04-15-2010 |
20100216910 | FUNCTIONALIZED POLYMERS AND IMPROVED TIRES THEREFROM - A functionalized elastomer defined by the formula | 08-26-2010 |
20100234534 | HYSTERESIS ELASTOMERIC COMPOSITIONS COMPRISING POLYMERS TERMINATED WITH ISOCYANATO ALKOXYSILANES - A functionalized polymer terminated by using an isocyanato alkoxysilane terminating agent. A method of preparing a functionalized polymer comprising the step of contacting a living polymer with an isocyanato alkoxysilane terminating agent. | 09-16-2010 |
20100298465 | FUNCTIONALIZED POLYMERS AND IMPROVED VULCANIZATES THEREFROM - A functionalized polymer defined by the formula π-R | 11-25-2010 |
20110039994 | Multiple-Acid-Derived Metal Soaps Incorporated In Rubber Compositions And Method For Incorporating Such Soaps In Rubber Compositions - A composition includes a polymer matrix, a multiple-acid-derived metal soap, wherein the metal has an oxidation state of +3 or +4. An associated method for making a rubber composition includes the steps of: combining a solvent and a multiple carboxylic, phosphonic, phosphoric, sulfuric, or sulfonic acid, or mixtures thereof, and mixing to form solution A; adding a source of metal ions to solution A and mixing to form a product A, the metal being selected from the metals having an oxidation state of +3 or +4, whereby product A includes a multiple-acid-derived metal soap; and combining the multiple-acid-derived metal soap with a diene rubber. A method of making a tire component includes the steps of: combining a solvent and a multiple carboxylic, phosphonic, phosphoric, sulfuric, or sulfonic acid, or mixtures thereof, and mixing to form solution A; adding a source of metal ions to solution A and mixing to form a product A, the metal being selected from the metals having an oxidation state of +3 or +4, whereby product A includes a multiple-acid-derived metal soap; combining the multiple-acid-derived metal soap with a diene rubber; and molding and vulcanizing the rubber composition into a tire component. | 02-17-2011 |
20110112263 | ANIONIC POLYMERIZATION INITIATORS AND POLYMERS THEREFROM - One or more embodiments of the present invention provides a method for preparing a chain-extended lithiated thioacetal solution, the method comprising (i) preparing a lithiated thioacetal by reacting an initiator precursor compound with an organolithium compound; and (ii) chain extending the lithiated thioacetal by polymerizing monomer including conjugated diene monomer, optionally together with vinyl aromatic monomer, to form a polymeric or oligomeric segment having at least 3 and less than 125 repeat units. | 05-12-2011 |
20110144235 | Method For Making Alkoxy-Modified Silsesquioxanes - A method is presented for making alkoxy-modified silsesquioxanes (AMS) or co-alkoxy-modified silsesquioxanes (co-AMS,) comprising the steps of (a) combining as a reaction mixture (i) water, (ii) an acid-stable solvent for the water, (iii) a solid strong cationic hydrolysis and condensation catalyst, and (iv) a trialkoxysilane compound, (b) allowing the reaction mixture to react for about 0.5 hours to about 200 hours to form the alkoxy-modified silsesquioxanes; and (c) recovering the alkoxy-modified silsesquioxanes from the reaction mixture. The use of solid strong cationic catalysts in this reaction system is advantageous because they remain as solids throughout the reaction, allowing simplified separation of the solid catalyst from the soluble AMS or co-AMS products, resulting in total or near total recovery of the AMS or co-AMS products, the products being free of, or substantially free of residual acid catalyst, as well as virtual total recovery of the catalyst for recycling. The improved AMS and co-AMS compounds, vulcanizable rubber compounds containing them, and a pneumatic tire having a component made from the vulcanized rubber compounds are also presented. | 06-16-2011 |
20110180195 | COMPOUNDING SILICA-REINFORCED RUBBER WITH LOW VOLATILE ORGANIC COMPOUND (VOC) EMISSION - Alkoxy-modified silsesquioxane compounds are described. The alkoxy-modified silsesquioxane compounds contain an alkoxysilane group that participates in an alkoxysilane-silica reaction as a silica dispersing agent in rubber, with the release of zero to about 0.1% by weight of the rubber of volatile organic compounds (VOC), especially alcohol, during compounding and further processing. Further described are methods for making alkoxy-modified silsesquioxanes, methods for making vulcanizable rubber compounds containing alkoxy-modified silsesquioxanes, vulcanizable rubber compounds containing alkoxy-modified silsesquioxanes, and pneumatic tires comprising a component that contains alkoxy-modified silsesquioxanes. | 07-28-2011 |
20120016096 | FUNCTIONAL POLYMERS PREPARED WITH SULFUR-CONTAINING INITIATORS - A sulfur-containing anionic polymerization initiator defined by the formula: | 01-19-2012 |
20120046410 | TREAD COMPOSITIONS WITH IMPROVED DYNAMIC STORAGE MODULUS - A process for forming a tire component, the process comprising the steps of introducing a vulcanizable polymer, a curative, a first carbon black characterized by an iodine adsorption number, per ASTM D1510, that is greater than 60 g/kg, and a second carbon black characterized by an iodine adsorption number, per ASTM D1510, that is less than 60 g/kg to form a vulcanizable composition, fabricating a tire component from the vulcanizable composition, and curing the tire component. | 02-23-2012 |
20120077922 | Amino Alkoxy-Modified Silsesquioxane Adhesives For Improved Metal Adhesion And Metal Adhesion Retention To Cured Rubber - Amino alkoxy-modified silsesquioxanes (amino AMS), and/or amino co-AMS compounds that also comprise a mercaptosilane or a blocked mercaptosilane, are excellent adhesives for coating plated or unplated metal wire for adherence of the wire to a rubber stock. The amino AMS and/or the amino/mercaptan co-AMS adhesives can be used with all types of rubber and there is no requirement for the use of special adhesive additives to the rubber vulcanizates, such as, but not limited to, cobalt, resins and high sulfur levels. In particular, the use of amino AMS and/or amino/mercaptan co-AMS compounds as adhesives for bonding wire to rubber also improves the adherence performance of the reinforcements to obtain sufficient bonding that is resistant to degradation over the course of time, especially resistance to thermal aging and/or thermo-oxidizing aging, in particular corrosion in the presence of water. Vulcanized rubber compositions that contain an amino AMS and/or amino/mercaptan co-AMS compound also have improved adhesion to embedded uncoated steel after humidity aging compared with vulcanized rubber compositions not containing the amino alkoxy-modified silsesquioxane. | 03-29-2012 |
20120165464 | FUNCTIONALIZED POLYMERS AND VULCANIZATES WITH REDUCED HYSTERETIC LOSS - A method for preparing a functionalized polymer, the method comprising the step of reacting a reactive polymer with a functionalizing agent defined by formula I or formula II: | 06-28-2012 |
20120165476 | AMINE-CONTAINING ALKOXYSILYL-FUNCTIONALIZED POLYMERS - An amine-containing alkoxysilyl-functionalized polymer, a method of preparing a reactive polymer functionalized with an alkoxysilane functionalizing agent and further reacted with an amino alcohol, the resulting polymer, and vulcanizates thereof. | 06-28-2012 |
20120180937 | FUNCTIONALIZED POLYMERS AND TIRES THEREFROM - A method for preparing a functionalized polymer, the method comprising providing a reactive polymer, where the reactive polymer includes an oxygen anion, a sulfur anion, or a nitrogen anion, reacting the reactive polymer with carbon disulfide to form a polymer including a dithio carboxyl group, and reacting the polymer including the dithio carboxyl group with a blocking agent. | 07-19-2012 |
20120309906 | POLYMERS FUNCTIONALIZED WITH HALOSILANES CONTAINING AN AMINO GROUP - A method for preparing a functionalized polymer, the method comprising the steps of preparing a reactive polymer, and reacting the reactive polymer with a halosilane compound containing an amino group. | 12-06-2012 |
20140011924 | COMPOUNDING SILICA-REINFORCED RUBBER WITH LOW VOLATILE ORGANIC COMPOUND (VOC) EMISSION - Alkoxy-modified silsesquioxane compounds are described. The alkoxy-modified silsesquioxane compounds contain an alkoxysilane group that participates in an alkoxysilane-silica reaction as a silica dispersing agent in rubber, with the release of zero to about 0.1% by weight of the rubber of volatile organic compounds (VOC), especially alcohol, during compounding and further processing. Further described are methods for making alkoxy-modified silsesquioxanes, methods for making vulcanizable rubber compounds containing alkoxy-modified silsesquioxanes, vulcanizable rubber compounds containing alkoxy-modified silsesquioxanes, and pneumatic tires comprising a component that contains alkoxy-modified silsesquioxanes. | 01-09-2014 |
20140107298 | FUNCTIONALIZED POLYMERS AND TIRES THEREFROM - A method for preparing a functionalized polymer, the method comprising providing a reactive polymer, where the reactive polymer includes an oxygen anion, a sulfur anion, or a nitrogen anion, reacting the reactive polymer with carbon disulfide to form a polymer including a dithio carboxyl group, and reacting the polymer including the dithio carboxyl group with a blocking agent. | 04-17-2014 |