Abstract: The invention relates to the use of specific aminosilyl monomers in the manufacture of elastomeric polymers, especially rubber. The invention specifically relates to a process for preparing an elastomeric polymer, involving the copolymerization of the aminosilyl monomers, the elastomeric polymer thus obtained or obtainable, non-vulcanized and vulcanized polymer compositions comprising the elastomeric polymer, and articles comprising one or more components formed from the vulcanized polymer composition.

Abstract: The present invention relates to polymer blend that includes (a) 50 to 90 percent by weight of a first elastomeric polymer having a high molecular weight, (b) 5 to 50 percent by weight, preferably 5 to 40 percent by weight, more preferably 10 to 35 percent by weight, of a second elastomeric polymer having a low molecular weight and being coupled, wherein the amounts of the components (a) and (b) are based on the total weight of the polymer blend.

Abstract: Novel polymerizable multivinylaminosilanes which are useful as branching agents for synthetic and natural rubber are described. The compounds can be used in the polymerization of conjugated diene monomers, optionally together with aromatic vinyl monomers, thus producing polymers, which can favorably be used in rubber articles such as tires.

Abstract: The invention relates to the use of specific aminosilyl monomers in the manufacture of elastomeric polymers, especially rubber. The invention specifically relates to a process for preparing an elastomeric polymer, involving the copolymerization of the aminosilyl monomers, the elastomeric polymer thus obtained or obtainable, non-vulcanized and vulcanized polymer compositions comprising the elastomeric polymer, and articles comprising one or more components formed from the vulcanized polymer composition.

Abstract: The present invention relates to a process for preparing a branched elastomeric polymer by polymerization of a conjugated diene in the presence of a specific branching agent and a specific stabilizing compound. The branched elastomeric polymer exhibits improved storage stability, as reflected by a constant, or less variable, polymer viscosity over time and with reduced temperature dependence.

Abstract: An elastomeric polymer of formula 1 is described, wherein S is a sulfur atom, P is a polymer chain that can be obtained by the anionic polymerization of at least one conjugated diene and optionally one or more vinyl aromatic compounds and that is optionally chain-end-modified, R1 is selected independently from C1-C11 alkyl, C6-C11 aryl, C7-C11 aralkyl, and C2-C11 dialkyl ether, R2 is selected independently from H, C1-C11 alkyl, C6-C11 aryl, C7-C11 aralkyl, C2-C11 dialkyl ether, and —SiR3R4R5, wherein R3, R4, and R5 are selected independently from H, C1-C16 alkyl, C6-C16aryl, and C7-C16 aralkyl, and wherein R3, R4, and R5 are selected independently from H, C6-C16 alkyl, C6-C16 aryl, and C7-C16 aralkyl, and n is an integer selected from 1-200, preferably 1 to 100, especially preferably 1 to 50, wherein the group(s) —S—R1—S—R2 is/are bonded to the backbone of the polymer chain P.

Abstract: The present invention relates to polymer blend that includes (a) 50 to 90 percent by weight of a first elastomeric polymer having a high molecular weight, (b) 5 to 50 percent by weight, preferably 5 to 40 percent by weight, more preferably 10 to 35 percent by weight, of a second elastomeric polymer having a low molecular weight and being coupled, wherein the amounts of the components (a) and (b) are based on the total weight of the polymer blend.

Abstract: The present invention relates to novel aminosilane-functionalized diene compounds of the following Formula I: wherein each R? is independently selected from C1-C12 alkyl, C6-C18 aryl, C7-C18 alkylaryl, tri(C1-C6 alkyl, C6-C12 aryl or C7-C18 alkylaryl)silyl and allyl, wherein two R? groups may be connected to form a ring and the ring may contain, further to the Si-bonded nitrogen atom, one or more of an oxygen atom, a nitrogen atom, an >N(C1-C6 alkyl or C7-C18 alkylaryl) group and a sulfur atom; each R? is independently selected from C1-C6 hydrocarbyl; Ra, Rb, Rc, Rd and Re are independently selected from hydrogen, methyl and ethyl; x is an integer selected from 0, 1 and 2, y is an integer selected from 1, 2 and 3 and x+y=3. The diene compounds are useful as modifying monomers in the polymerization of conjugated diene monomers.

Abstract: A polymer blend consisting of (a) 60-96 percent by weight of a high molecular weight first elastomeric polymer, (b) 4-35 percent by weight of a low molecular weight second polymer, and optionally (c) 0-13 percent by weight of an extender oil, wherein the amounts of the components (a), (b) and (c) are based on the total weight of the polymer blend.

Abstract: The present invention relates to a process for preparing a branched elastomeric polymer by polymerization of a conjugated diene in the presence of a specific branching agent and a specific stabilizing compound. The branched elastomeric polymer exhibits improved storage stability, as reflected by a constant, or less variable, polymer viscosity over time and with reduced temperature dependence.

Abstract: The invention relates to an elastomeric polymer composition and its preparation. The polymer composition includes, in combination, a single terminally modified conjugated diene (co)polymer and a dual terminally modified conjugated diene (co)polymer. The polymer composition is useful in the preparation of a vulcanized and, thus, crosslinked elastomeric composition having relatively low hysteresis loss, good grip and low heat build-up properties.

Abstract: The invention describes a process for producing a diene polymer, the process including the following steps in this order i) polymerizing one or more diene monomers in the presence of a catalyst composition to give a reaction mixture; ii) adding to the reaction mixture one or more alkoxysilane compounds; iii) adding S2Cl2, SCl2, SOCl2, S2Br2, SOBr2 or a mixture thereof to the reaction mixture; and iv) optionally adding a protic agent to the reaction mixture so as to deactivate the catalyst. The invention further includes polymers that are obtainable according to this process, as well as products including the polymer.

Abstract: The present invention relates to novel aminosilane-functionalized diene compounds of the following Formula I: wherein each R? is independently selected from C1-C12 alkyl, C6-C18 aryl, C7-C18 alkylaryl, tri(C1-C6 alkyl, C6-C12 aryl or C7-C18 alkylaryl)silyl and allyl, wherein two R? groups may be connected to form a ring and the ring may contain, further to the Si-bonded nitrogen atom, one or more of an oxygen atom, a nitrogen atom, an >N(C1-C6 alkyl or C7-C18 alkylaryl) group and a sulfur atom; each R? is independently selected from C1-C6 hydrocarbyl; Ra, Rb, Rc, Rd and Re are independently selected from hydrogen, methyl and ethyl; x is an integer selected from 0, 1 and 2, y is an integer selected from 1, 2 and 3 and x+y=3. The diene compounds are useful as modifying monomers in the polymerization of conjugated diene monomers.

Abstract: The present invention relates to novel vinylsilane compounds which are useful as modifying monomers in the polymerization of conjugated diene monomers, optionally together with aromatic vinyl monomers, thus producing polymers, specifically elastomeric polymers, which can favorably be used in rubber articles such as tires.

Abstract: The present invention relates to a modified elastomeric polymer obtained by reacting a living anionic elastomeric polymer and specific chain end modifying compound, wherein the living anionic elastomeric polymer comprises more than 70% and less than 99% by weight of butadiene units and more than 1% and less than 30% by weight of styrene units and has a vinyl bond content of from 2 to less than 10%, based on the polybutadiene fraction of the living anionic elastomeric polymer. The invention further relates to a method of preparing the modified elastomeric polymer and to an elastomeric polymer composition comprising the modified elastomeric polymer.

Abstract: The invention related to novel compounds useful as modifying monomers and precursors for polymerization initiators. The invention further relates to a method of making the polymerization initiators and resulting polymers. The invention also relates to polymer compositions comprising the polymer of the invention and further components such as extender oils, fillers, vulcanizing agents etc., and to corresponding vulcanized polymer compositions and articles comprising vulcanized parts made from the vulcanized polymer composition.

Abstract: The invention describes a process for producing a diene polymer, the process including the following steps in this order i) polymerizing one or more diene monomers in the presence of a catalyst composition to give a reaction mixture; ii) adding to the reaction mixture one or more alkoxysilane compounds; iii) adding S2Cl2, SCl2, SOCl2, S2Br2, SOBr2 or a mixture thereof to the reaction mixture; and iv) optionally adding a protic agent to the reaction mixture so as to deactivate the catalyst. The invention further includes polymers that are obtainable according to this process, as well as products including the polymer.

Abstract: Novel polymerizable multivinylaminosilanes which are useful as branching agents for synthetic and natural rubber are described. The compounds can be used in the polymerization of conjugated diene monomers, optionally together with aromatic vinyl monomers, thus producing polymers, which can favorably be used in rubber articles such as tires.

Abstract: A polymer blend consisting of (a) 60-96 percent by weight of a high molecular weight first elastomeric polymer, (b) 4-35 percent by weight of a low molecular weight second polymer, and optionally (c) 0-13 percent by weight of an extender oil, wherein the amounts of the components (a), (b) and (c) are based on the total weight of the polymer blend.

Abstract: The invention relates to an elastomeric polymer composition and its preparation. The polymer composition includes, in combination, a single terminally modified conjugated diene (co)polymer and a dual terminally modified conjugated diene (co)polymer. The polymer composition is useful in the preparation of a vulcanized and, thus, crosslinked elastomeric composition having relatively low hysteresis loss, good grip and low heat build-up properties.