C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 311/60 (2006.01) C07D 493/20 (2006.01) C08K 5/15 (2006.01) C08K 5/1545 (2006.01) C08K 5/3437 (2006.01) C08L 21/00 (2006.01) C08L 61/00 (2006.01)
Patent
CA 2157656
A rubber composition (1) which comprises: a rubber(A) such as natural rubber, isoprene rubber and the like; a hydroxy flavan compound(B1) represented by the formula (I ): Image (I) wherein R1, R2, R3, R4 and R5 are hydrogen or an aliphatic group and X and Y are hydrogen,hydroxy or an aliphatic group, such as 2,4,4-trimethyl-2',4',7-trihydroxyflavan(B2); and 2,2,4-trimethyl-1,2-dihydroquinoline polymer(C1) containing 1% or less by weight of a primary amine, 3% or less by weight of the monomer and 30% or more by weight of the dimer based on the total weight of the polymer, or a cromane compound(C2) which may be a novel cromane compound.
Inui Naoki
Iyama Hironobu
Nagasaki Hideo
Tsuta Kyoko
Fetherstonhaugh & Co.
Sumitomo Chemical Co. Ltd.
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