Adhesion promoters containing -s-so.sub.2r groups

Details Adhesion promoters containing -s-so.sub.2r groups Adhesion promoters containing -s-so.sub.2r groups

B - Operations, Transporting

29

D

18/183, 18/949

B29D 30/38 (2006.01) C08J 5/10 (2006.01) C08K 5/41 (2006.01)

Patent

CA 1246306

ABSTRACT The bond strength between a sulphur-vulcanisable rubber and a metal, especially brass, is increased by using as bonding promoter an organic substance containing one or more groups of the formula -S-SO2R where R represents (a) a radical -OM where M is a monovalent metal, the equivalent of a multivalent metal, a monovalent ion derived by the addition of a proton to a nitrogeneous base or the equivalent of a multivalent ion derived by the addition of two or more protons to a nitrogeneous base, or (b) an organic radical. Preferred promoters include sodium, zinc, nickel and cobalt organothiosulphates.

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