Rubber composition, and oil seal and rubber hose obtained...

Details Rubber composition, and oil seal and rubber hose obtained... Rubber composition, and oil seal and rubber hose obtained...

C - Chemistry, Metallurgy

08

L

400/5307

C08L 83/05 (2006.01) C08L 21/00 (2006.01) C08L 23/16 (2006.01) C08L 71/03 (2006.01) C08L 83/04 (2006.01)

Patent

CA 1336928

A rubber composition obtained by compounding (B) from 0.005 to 50 parts by weight of an polyorgano- hydrogensiloxane and (C) from 0.00001 to 1 part by weight of a compound of a transition metal belonging to the group VIII with (A) 100 parts by weight of a rubber- forming polymer mainly comprising (I) from 3 to 70% by weight of a polyorganosiloxane represented by the formula: RaSio Image wherein R represents a substituted or unsubstituted monovalent organic group, 0.02 to 10 mole% of which being a vinyl group; and a represents a number of from 1.900 to 2.004, and having a degree of polymerization of from 500 to 10,000 and (II) from 30 to 97% by weight of organic rubber, and subjecting the resulting compound to hydro- silylation while effecting shear deformation. The rubber composition is excellent in roll processing properties, mechanical strength, heat resistance, and low-temperature property and is suitable as oil seal and rubber hose.

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