Chlorinated ethylene/.alpha.-olefin copolymer rubber and composition containing the same
AssigneeMitsui Petrochemical Industries, Ltd.
InventorsTetsuo Tojo, Muneyuki Matsumoto, Yoshiharu Kikuchi
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Abstract
A chlorinated ethylene/.alpha.-olefin copolymer rubber which is a chlorinated product of an ethylene/.alpha.-olefin copolymer rubber having a vinylidene bond at the terminal of the molecule, the number of said vinylidene bond being 0.05 to 1.00 per 1,000 carbon atoms, which has a chlorine content of 20 to 40% by weight, and which has a Mooney viscosity [ML.sub.1+4 (121.degree. C.)] of 10 to 190; and a composition comprising the chlorinated ethylene/.alpha.-olefin copolymer rubber, (a) a reinforcing agent, (b) a softening agent, and (c) a vulcanizing agent.
Claims5
A chlorinated ethylene/.alpha.-olefin copolymer rubber:
- which has a chlorine content of 20 to 40% by weight,
- which has a Mooney viscosity [ML.sub.1+4 (121.degree. C.)] of 10 to 190, and
- in which the ethylene/.alpha.-olefin copolymer rubber before the chlorination has a vinylidene bond at the terminal of the molecule, the number of said vinylidene bond being 0.05 to 1.00 per 1,000 carbon atoms.
A chlorinated ethylene/.alpha.-olefin copolymer rubber which is a chlorinated product of an ethylene/.alpha.-olefin copolymer rubber having a vinylidene bond at the terminal of the molecule, the number of said vinylidene bond being 0.05 to 1.00 per 1,000 carbon atoms, which has a chlorine content of 20 to 40% by weight, and which has a Mooney viscosity [ML.sub.1+4 (121.degree. C.)] of 10 to 190.
Dependencies are inferred from the claim text.