B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
154/71, 154/105.
B32B 25/08 (2006.01) B29C 65/00 (2006.01) B29C 65/06 (2006.01) C08J 5/12 (2006.01) C08J 7/12 (2006.01) F16L 33/34 (2006.01)
Patent
CA 1037848
A B S T R A C T This invention relates to a composite structure and a method of making same. The composite structure comprises an unsaturated rubber selected from polychloroprene and copolymers of chloroprene with at least one copolymer- isable hydrocarbon and a polyester which is a reaction product of at least one aliphatic dihydric alcohol and at least one aromatic compound having two acidic groups attached to the aromatic nucleus one being a carbonyl-con- taining acidic group and the other being a carbonyl-con- taining acidic group or an acidic hydroxyl group, the rubber being bonded directly to the polyester without an adhesive interlayer. The method of making the composite structure comprises the steps of treating the surface of the rubber to be bonded to the polyester with a treatment agent selected from concentrated nitric acid, hypochlorous acid and hypochlo- rous acid generators, heating the polyester to melt at least to the surface to be bonded to the rubber and solidifying the molten polyester in contact with the treated rubber.
207331
Wragg Reginald T.
Yardley James F.
Dunlop Limited
Na
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