C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/29 (2006.01) C08K 3/36 (2006.01) C08L 21/00 (2006.01)
Patent
CA 2432431
The invention relates to a silica-filled, sulfur-vulcanizable rubbert composition comprising an unsaturated rubber, 20 to 100 phr of a silica, 1.6 to 8 phr of a silica coupling agent, 0.05 to 5 phr of an antigegradant, 0.1 to 5 phr of a vulcanization accelerator, 0.1 to 10 phr of sulfur, and 0.5 to 5 phr of a quinone diimine, with the proviso that the antidegradant is not a quinone diimine. The invention also relates to a vulcanization process comprising mixing and heating said rubber composition and to rubber articles, such as pneumatic tyres, comprising the rubber vulcanizate obtained by said process.
L'invention concerne une composition de caoutchouc charg~e de silice, pouvant Útre vulcanis~e au moyen de soufre, comprenant un caoutchouc insatur~ et, en nombre de parties en poids pour 100 parties en poids de caoutchouc, 20 ~ 100 d'une silice, 1,6 ~ 8 d'un agent de couplage de silice, 0,05 ~ 5 d'un agent protecteur, 0,1 ~ 5 d'un acc~l~rateur de vulcanisation, 0,1 ~ 10 de soufre et 0,5 ~ 5 d'une quinone diimine, ~ condition que l'agent protecteur ne soit pas une quinone diimine. L'invention concerne ~galement un proc~d~ de vulcanisation, lequel consiste ~ m~langer et ~ chauffer ladite composition de caoutchouc, ainsi que des articles en caoutchouc, tels que des pneumatiques, comprenant le vulcanisat obtenu selon ledit proc~d~.
Datta Rabindra Nath
Huntink Nicolaas Maria
Talma Auke Gerardus
Flexsys B.v.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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