Rubber composition

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C - Chemistry, Metallurgy

07

C

6/135, 400/9105,

C07C 209/60 (2006.01) C07C 211/52 (2006.01) C08K 5/32 (2006.01)

Patent

CA 1338446

Dynamic properties of valcanized rubber are improved, without accelerating scorching property remark- ably nor deteriorating flex-cracking resistance, by incorporating in a filler-containg natural or synthetic rubber composition, a dinitrodiamine derivative repre- sented by the general formula Image wherein A represents a divalent aliphatic group, a divalent cycloaliphatic group, a divalent aromatic group or a group represented by the formula -CH2-X-CH2-, wherein X represents a cycloalkylene group or a phenylene group, provided that if A represents a cycloaliphatic group or an aromatic group, the two carbon atoms in A which are bonding to the nitrogen atom are not vicinal to each other; R and R' independently represent hydrogen atom or an alkyl group having 1 - 12 carbon atoms and may conjointly form a ring; and R" represents hydrogen atom, an aliphatic group, a cycloaliphatic group or an aromatic group. A process for producing the dinitrodiamine derivatives is also disclosed.

542109

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