Method of making rubber and polyester structures

Details Method of making rubber and polyester structures Method of making rubber and polyester structures

1974-08-19

1976-08-03

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

156308, 264328, 264340, B29H 900, B29F 100

Patent

active

039729737

ABSTRACT:
A composite structure comprises an unsaturated hydrocarbon rubber, polychloroprene or a chloroprene/hydrocarbon copolymer bonded without an adhesive layer to a polymer being 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, or to an elastoplastic linear block copolymer having at least one block of this reaction product.
A method of making this structure comprises treating the rubber surface to be bonded with concentrated nitric acid, hypochlorous acid or a hypochlorous acid generator, melting at least the surface of the polymer to be bonded, and solidifying the polymer in contact with the rubber.
The invention provides a polyester/rubber structure conveniently without an adhesive interlayer and the structure is useful in applications requiring properties of polyesters and rubbers, for example belting, hose and tires.

REFERENCES:
patent: 3080255 (1963-03-01), Winkelman
patent: 3248370 (1966-04-01), Reischl et al.
patent: 3852005 (1974-12-01), Sculati et al.
patent: 3875118 (1975-04-01), Meisert et al.
Dombrow, Polyurethanes, Reinhold, N.Y. (1965) pp. 156-158 relied on.

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