| 摘要 |
A modified diene elastomer comprises:
at least 55% by weight of entity coupled by a functional group bearing a function of formula —SiOR, in which R is a hydrogen atom or an alkyl radical, and optionally bearing another function capable of interacting with a reinforcing filler,from 5% by weight to 30% by weight of star-branched entity having three elastomeric branches connected to one and the same silicon atom belonging to a functional group bearing or not bearing a function capable of interacting with a reinforcing filler,less than or equal to 15% by weight of entity functionalized at the chain end by a functional group bearing a function —Si(OR)2, in which R is a hydrogen atom or an alkyl radical, and optionally bearing another function capable of interacting with a reinforcing filler, anda content of less than or equal to 15% by weight of non-functional diene elastomer. |
| 主权项 |
1. A modified diene elastomer comprising:
a) at least 55% by weight, with respect to the total weight of the modified diene elastomer, of entity coupled by a functional group bearing a function of formula —SiOR, in which R is a hydrogen atom or an alkyl radical having from 1 to 10 carbon atoms, and optionally bearing another function capable of interacting with a reinforcing filler, the group being bonded to the two branches of the diene elastomer via the silicon atom, b) of from 5% by weight to 30% by weight, with respect to the total weight of the modified diene elastomer, of star-branched entity having three elastomeric branches connected to one and the same silicon atom belonging to a functional group bearing or not bearing a function capable of interacting with a reinforcing filler, c) of a content of less than or equal to 15% by weight, with respect to the total weight of the modified diene elastomer, of entity functionalized at the chain end by a functional group bearing a function —Si(OR)2, in which R is a hydrogen atom or an alkyl radical having from 1 to 10 carbon atoms, and optionally bearing another function capable of interacting with a reinforcing filler, the group being bonded to the diene elastomer via the silicon atom, and d) of a content of less than or equal to 15% by weight, with respect to the total weight of the modified diene elastomer, of non-functional diene elastomer,the diene elastomers a), b), c) and d) being, before modification, of the same macrostructure and the same microstructure. |
