Patent ID: 9663633
Date: 2017-05-30
CPC Classifications: C08K,C08L

Claim:
1. A reinforced rubber composition based at least on an elastomeric matrix comprising natural rubber, said natural rubber present in said elastomeric matrix in an amount of from over 50 phr to 100 phr, a reinforcing filler present in an amount of from 35 to 200 phr in said elastomeric matrix and a polyaldimine compound of general formula (I): wherein: R A represents a hydrocarbon group comprising at least 3 carbon atoms, optionally interrupted by heteroatoms and optionally substituted, wherein the A group does not represent an aromatic nucleus directly bonded to the structure of the compound of general formula (I), wherein the polyaldimine compound is chosen from the following compounds: N,N′-bis[phenylmethylene]hexane-1,6-diamine, N,N′-bis[phenylmethylene]octane-1,8-diamine, N,N′-bis[phenylmethylene]cyclohexane-1,4-diamine, N,N′-bis[phenylmethylene]cyclohexane-1,2-diamine, N,N,N-tris(2-{[phenylmethylene]amino}ethyl)amine, N,N′-bis[(4-diethylaminophenyl)methylene]hexane-1,6-diamine, N,N′-bis[(4-methoxyphenyl)methylene]hexane-1,6-diamine, N,N′-bis[(2-diethylaminophenyl)methylene]hexane-1,6-diamine, N,N′-bis[(2-methoxyphenyl)methylene]hexane-1,6-diamine, N,N′-bis[mesitylmethylene]hexane-1,6-diamine, N,N′-bis[(4-methylphenyl)methylene]hexane-1,6-diamine, N,N′-bis[(2,4,6-triisopropylphenyl)methylene]hexane-1,6-diamine, N,N′-bis[(2,4,6-tri {tert-butyl}phenyl)methylene]hexane-1,6-diamine, N,N′-bis[(2,4,6-tricyclohexylphenyl)methylene]hexane-1,6-diamine, N,N′-bis[(2,6-diisopropyl-4-methylphenyl)methylene]hexane-1,6-diamine, N,N′-bis[(2,6-di{tert-butyl}-4-methylphenyl)methylene]hexane-1,6-diamine, N,N′-bis[(2,6-dicyclohexyl-4-methylphenyl)methylene]hexane-1,6-diamine, N,N′-bis[(4-diethylaminophenyl)methylene]octane-1,8-diamine, N,N′-bis[mesitylmethylene]octane-1,8-diamine, and N,N′-bis[(4-methylphenyl)methylene]octane-1,8-diamine, and wherein said polyaldimine compound is present at a level of from 0.1 to 20 millimoles per 100 grams of elastomeric matrix and said reinforcing filler comprises at least one inorganic reinforcing filler and a coupling agent, said inorganic reinforcing filler having hydroxyl groups, said coupling agent comprising at least one functional group that bonds to said hydroxyl groups of said inorganic reinforcing filler and at least one functional group that bonds to said natural rubber.