C - Chemistry – Metallurgy – 08 – C
Patent
C - Chemistry, Metallurgy
08
C
402/403, 402/407
C08C 19/02 (2006.01)
Patent
CA 1241495
Production of hydrogenated nitrile rubbers A B S T R A C T The hydrogenation of NBR in an aromatic solvent with tris-(triphenylphosphane)-rhodium-(I) halide as catalyst under hydrogen pressures of from 20 to 350 bars and at temperatures in the range from 100 to 145°C leads to products having degrees of hydrogenation of at least 90% and outstanding properties when the catalyst concentration amounts to between 0.05 and 0.6% by weight, based on solid rubber, and when hydrogenation is carried out in the presence of at most 2% by weight of triphenyl phosphane.
461248
Buding Hartmuth
Konigshofen Heinrich
Szentivanyi Zsolt
Thormer Joachim
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
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