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| Number | Title | Issue Date |
| 7964656 | Method of improving carbon black dispersion in rubber compositions A method for forming a vulcanizable composition of matter, the method comprising providing a polymer cement or latex comprising at least one rubber, adding at least one processing aid to the cement or latex to form a modified rubber cement or latex, isolating the ru... | 06/21/2011 |
| 7960463 | Tire treads including aluminum hydroxycarbonate Particular embodiments are directed toward a rubber mixture comprising (i) a rubber; and (ii) a filler component, where the filler component includes a filler selected from the group consisting of amorphous aluminum hydroxycarbonate, amorphous aluminum hydroxyoxycar... | 06/14/2011 |
| 7951876 | Multi-functional polymers A multi-functional polymer defined by the formula (Q-R¦n—Z—P2—Y where (Q-R)n is a functionality cluster, Q is a functional group, R is a multi-valent organic group, P2 is a long-chain polymer, n ... | 05/31/2011 |
| 7943696 | 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 where R is selected from C1 to C6 trialkyl-silyl gro... | 05/17/2011 |
| 7915368 | 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 hyd... | 03/29/2011 |
| 7906592 | Polymers functionalized with imide compounds containing a protected 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 an imide compound containing a protected amino group. ... | 03/15/2011 |
| 7902309 | Process and catalyst system for polydiene production Compositions and polydiene production processes involving catalyst systems comprising at least one lanthanide-containing compound, at least one alkylating agent, at least one halogen source, and at least one N,N-dihydrocarbylhydroxylamine. ... | 03/08/2011 |
| 7902278 | Functionalized polymers and improved tires therefrom A functionalized elastomer defined by the formula where π includes a polymer chain, θ includes a group 14 element, R1 and R2 each independently include hydrogen, or a monovalent organic group, or a p... | 03/08/2011 |
| 7897690 | Rubber composition containing functionalized polymer nanoparticles A polymer nanoparticle is provided. The nanoparticle includes an inner layer having alkenylbenzene monomer units. The nanoparticle further includes an outer layer having monomer units selected from conjugated dienes, alkylenes, alkenylbenzenes, and mixtures thereof.... | 03/01/2011 |
| 7897661 | Polymerized (substituted imidazolium) liquid ionomers for improved handling properties in silica-reinforced rubber compounds It has been discovered that the use of a silica dispersing aid, a polymerized (substituted) imidazolium liquid ionomer (PSI), in vulcanizable rubber compositions, provides an increase in the compound modulus and satisfactory processing of silica-containing rubber co... | 03/01/2011 |
| 7884160 | Non-spherical nanoparticles made from living triblock polymer chains The present invention provides polymeric nanoparticles comprising triblock and optionally diblock copolymer chains. The architecture of the polymeric nanoparticles may be controlled, resulting in nanoparticles having non-spherical shapes. The present invention also ... | 02/08/2011 |
| 7879958 | Polyhydroxy compounds as polymerization quenching agents A method for quenching an active polymerization mixture, the method comprising introducing a polyhydroxy compound to an active polymerization mixture. ... | 02/01/2011 |
| 7879952 | Functionalized polymers A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing conjugated diene monomer by employing a lanthanide-based catalyst to form a reactive polymer, and (ii) reacting the reactive polymer with an azine compound. ... | 02/01/2011 |
| 7879945 | 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 where R5 includes a monovalent organic group, R6 independently inclu... | 02/01/2011 |
| 7875671 | Process for preparing filler-dispersed polymeric compositions A method for preparing a polymeric composition, the method comprising introducing a functionalized polymer and a filler. Mixing the functionalized polymer and filler to form a first masterbatch, adding additional polymer to the first masterbatch, and mixing the addi... | 01/25/2011 |
| 7868110 | Anionic polymerization initiators and polymers therefrom An initiator compound comprising an aryl or heteroaryl thioacetal including a substituent defined by the formula where x is an integer from 1 to about 5, y is an integer from 1 to about 5, the sum of x and y is from about 3... | 01/11/2011 |
| 7858690 | Functional coupling agents and polymers prepared therewith A polymer including a functional group, where the polymer is defined by the formula where R1 is a monovalent organic group, each R2 is independently a monovalent organic group, R3 is a dival... | 12/28/2010 |
| 7836928 | Method of producing a tire composition having improved silica reinforcement Vulcanizable elastomeric compositions and vulcanizates are prepared by employing a nitrogen-containing heterocycle. The nitrogen-containing heterocycle is believed to enhance interaction between a silica particle and a silica-interactive compound. ... | 11/23/2010 |
| 7829624 | One-pot synthesis of nanoparticles and liquid polymer for rubber applications A method for performing a one-batch synthesis of a blend of nanoparticles and liquid polymer includes polymerizing a first monomer and optionally a second monomer in a hydrocarbon solvent to form the liquid polymer. The polymerization is terminated before completion... | 11/09/2010 |
| 7825201 | 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 dihydrocarbyl ether, where said step of polymerizing takes place within a polymerization mixture that includes less than 20% by weight ... | 11/02/2010 |
| 7820765 | Amine functionalized polymers A functionalized polymer includes a polymer chain and, bonded thereto, an functional group having the general formula —NHAR1 where A is an oxygen atom, a sulfinyl (thionyl) group, a sulfonyl group, a quaternary phosphonium group, or a secondary amino gr... | 10/26/2010 |
| 7820580 | 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 alcoh... | 10/26/2010 |
| 7816483 | Amine functionalized polymer A functionalized polymer includes a polymer chain and, bonded thereto, a functional group having the general formula —NQOR1 where R1 is a hydrogen atom or —CH2Z where Z is a hydrogen atom or a substituted or unsubstituted aryl, a... | 10/19/2010 |
| 7807763 | Method for bulk polymerization A method for polymerizing conjugated diene monomer into polydienes, the method comprising: polymerizing conjugated diene monomer within a liquid-phase polymerization mixture that includes conjugated diene monomer, a lanthanide-based catalyst system, dicyclopentadien... | 10/05/2010 |
| 7806157 | Tyre building drum A tyre building drum having a central shaft; two cylindrical half-drums mounted to slide along the central shaft; and a telescopic central body coaxial with the two half-drums, connecting the two half-drums, and having a tubular central member integral with the cent... | 10/05/2010 |
| 7799870 | 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 ... | 09/21/2010 |
| 7795344 | Nano-particle preparation and applications A nano-particle composition including a poly(alkenylbenzene) core and a poly(conjugated diene), a poly(alkylene), or a poly(alkenylbenzene) surface layer is provided. The nano-particles have a mean average diameter of less than about 100 nm. The nano-particles can b... | 09/14/2010 |
| 7790798 | Solution masterbatch process using finely ground fillers for low hysteresis rubber Methods are provided for making solution masterbatches containing a diene elastomer in an organic solvent and a silica filler, having a first average particle size, that is ground in an organic solvent to form a silica having a reduced second average particle size. ... | 09/07/2010 |
| 7786236 | Polymeric nano-particles of flower-like structure and applications A flower-like nano-particle composition including a poly(alkenylbenzene) core and a poly(conjugated diene) or a poly(alkylene) surface layer is provided. The nano-particles have a mean average diameter less than about 100 nm and are substantially free of chain ends.... | 08/31/2010 |
| 7767755 | Composition including multiple functionalized polymers A composition that includes functionalized polymers and particulate filler is provided. The composition includes at least three components: (1) a polymer that includes a first type of functionality such as a functional group including a primary or secondary amine fu... | 08/03/2010 |
| 7750087 | Modified polymers prepared with lanthanide-based catalysts A method for preparing a functionalized polymer comprising the steps of preparing a pseudo-living polymer by polymerizing conjugated diene monomer with a lanthanide-based catalyst, and reacting the pseudo-living polymer with at least one functionalizing agent define... | 07/06/2010 |
| 7741418 | 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 dihydrocarbyl ether, where said step of polymerizing employs a lanthanide-based catalyst system. ... | 06/22/2010 |
| 7737218 | Method for generating free radical capable polymers using tin or silicon halide compounds Provided is a method comprising reacting the anionic living end of a polymer with a compound selected from the group consisting of tin halides and silicon halides to produced a polymer with a homolytically cleavable group containing a Sn—C bond or a Si—C bond. A... | 06/15/2010 |
| 7732534 | Polymers functionalized with nitro compounds A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing conjugated diene monomer by employing a lanthanide-based catalyst to form a reactive polymer, and (ii) reacting the reactive polymer with a nitro compound. ... | 06/08/2010 |
| 7723440 | Functionalized polymers and improved vulcanizates therefrom A functionalized polymer defined by the formula π-R1-α, where π is a polymer chain, R1 is a bond or a divalent organic group, and α is a sulfur-containing heterocycle. ... | 05/25/2010 |
| 7718738 | Self assembly of molecules to form nano-particles A polymer nano-particle composition is provided, wherein the nano-particle includes a poly(alkenylbenzene) core and a surface layer including poly(conjugated diene). A method for self-assembly of the nano-particles is also provided. The polymer nano-particles are pr... | 05/18/2010 |
| 7718737 | Rubber composition containing functionalized polymer nanoparticles A polymer nanoparticle is provided. The nanoparticle includes an inner layer having alkenylbenzene monomer units. The nanoparticle further includes an outer layer having monomer units selected from conjugated dienes, alkylenes, alkenylbenzenes, and mixtures thereof.... | 05/18/2010 |
| 7700673 | Reduced oil rubber compositions including N-substituted polyalkylene succinimide derivates and methods for preparing such compositions A reduced oil rubber composition includes (a) a silica filler, (b) a N-substituted polyalkylene succinimide derivative, and (c) a rubber matrix. In certain embodiments, the composition may comprise a reduced amount of oil, especially a reduced amount of aromatic oil... | 04/20/2010 |
| D614120 | Tire tread | 04/20/2010 |
| D613236 | Tire tread | 04/06/2010 |
