Process for hydrogenating carboxylated nitrile rubber, the...

C - Chemistry – Metallurgy – 08 – F

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C08F 236/14 (2006.01) C08C 19/02 (2006.01) C08L 13/00 (2006.01) C08L 15/00 (2006.01) C09J 147/00 (2006.01)

Patent

CA 2304501

Polymers of a conjugated diene, an unsaturated nitrile and an .alpha.,.beta.-unsaturated carboxylic acid are selectively hydrogenated to reduce carbon-carbon double bonds, without also reducing carboxyl groups and nitrile groups, using a rhodium- containing compound as catalyst. The hydrogenated polymers are novel and display excellent adhesive properties at both room temperature and high temperature, excellent hot tear strength, and excellent abrasion resistance.

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