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US 5,109,055 AGranted
Rubber composition having excellent dynamic properties
AssigneeSumitomo Chemical Company, Limited
InventorsHideo Nagasaki, Naoki Inui, Shinichi Yachigo
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AssigneeSumitomo Chemical Company, Limited
InventorsHideo Nagasaki, Naoki Inui, Shinichi Yachigo
Estimating the term…
A rubber composition comprising a base rubber, carbon black and a dinitrodiamine compound represented by the formula [I], ##STR1## wherein X is a divalent aliphatic, alicyclic or aromatic group which may contain halogen or oxygen in the group, R.sup.1 is hydrogen or an aliphatic, alicyclic or aromatic group, provided that two nitrogen atoms linking through X may further link through R.sup.1 when both X and R.sup.1 are the aliphatic groups, and R.sup.2 and R.sup.3 independently of one another are each hydrogen or an alkyl of 1 to 12 carbon atoms, provided that R.sup.2 and R.sup.3 may conjointly form a ring, is improved in its scorching without deterioration in its dynamic properties by incorporating thereto the following components (A) or (B): (A) N-(cyclohexylthio)phthalimide and a bismaleimide compound, or (B) 2,3,5,6-tetrachloro-1,4-benzoquinone.
A rubber composition comprising a base rubber of a natural and/or synthetic rubber, carbon black and, based on 100 parts by weight of the base rubber, from 0.1 to 10 parts by weight of a dinitrodiamine compound represented by the formula [I], ##STR7## wherein X is a divalent aliphatic, alicyclic or aromatic group which may contain halogen or oxygen in the group, R.sup.1 is hydrogen or an aliphatic, aliyclic or aromatic group, provided that two nitrogen atoms linking through X may further link through R.sup.1 when both X and R.sup.1 are the aliphatic groups, and R.sup.2 and R.sup.3 independently of one another are each hydrogen or an alkyl of 1 to 12 carbon atoms, provided that R.sup.2 and R.sup.3 may conjointly form a ring,
Dependencies are inferred from the claim text.