Patent ID: 9566828
Date: 2017-02-14
CPC Classifications: B60C,C08K,C08L

Claim:
1. A rubber composition based at least: (a) on an elastomeric matrix comprising non-halogenated natural rubber, wherein the weight fraction of natural rubber in the elastomeric matrix is greater than or equal to 50% by weight of the total weight of the matrix, (b) on a reinforcing filler, and (c) on a polyimine compound, in a proportion ranging from 6 to 20 mmol per 100 g of elastomer, wherein the polyimine compound is selected from the group consisting of N,N′-bis(4-methylpentan -2-ylidene)hexane-1,6-diamine, N,N′-bis(2,6-dimethylheptan-4-ylidene)hexane-1,6-diamine, N,N′-bis(2,4-dimethylpentan-3-ylidene)hexane-1,6-diamine, N,N′-bis(4-methylpentan-2-ylidene)octane-1,8-diamine, N,N′-bis(2,6-dimethylheptan-4-ylidene)octane-1,8-diamine, N,N′-bis(2,4-dimethylpentan-3-ylidene)octane-1,8-diamine, N,N′-dicyclopentylidenehexane-1,6-diamine, N,N′-dicyclopentylideneoctane-1,8-diamine, N,N′-dicyclohexylidenehexane -1,6-diamine, N,N′-dicyclohexylideneoctane-1,8-diamine, N,N′-bis(4-methylpentan-2-ylidene)cyclohexane-1,4-diamine, N,N′-bis(4-methylpentan-2-ylidene)cyclohexane-1,2-diamine, N,N′-bis(2,6-dimethylheptan-4-ylidene)cyclohexane-1,4-diamine, N,N′-bis(2,6-dimethylheptan-4-ylidene)cyclohexane-1,2-diamine, N,N′-dicyclohexylidenecyclohexane-1,4-diamine, N,N′-dicyclohexylidenecyclohexane-1,2-diamine, N-(4-methylpentan-2-ylidene)-,N′,N′-bis((4-methylpentan-2-ylideneamino)ethyl)ethane-1,2-diamine and N-(2,6-dimethylheptan-4-ylidene)-N′,N′-bis(2-(2,6-dimethylheptan-4-ylideneamino) ethyl)ethane-1,2-diamine.