Process for improving the adhesion of paint to polyolefin surfac

Details Process for improving the adhesion of paint to polyolefin surfac Process for improving the adhesion of paint to polyolefin surfac

1980-08-18

1981-12-01

Newsome, John H.

Coating processes

Electrical product produced

Welding electrode

20415917, 428520, B05D 306

Patent

active

043036970

ABSTRACT:
Surfaces of articles made of polyethylene, polypropylene, crystalline dipolymers of ethylene with propylene, blends of two or more of the above, and blends of any of the above with elastomeric ethylene/propylene copolymers or with EPDM copolymers are prepared for painting by priming with a chlorinated polymeric material selected from a chlorinated polypropylene and chlorinated polypropylene containing carboxylic anhydride groups, and exposing to ultraviolet radiation. This treatment improves both dry and wet adhesion of paint to surfaces of articles made of single polyolefins as well as of their blends with elastomeric copolymers in which the latter constitute at most 50% of the total polymer.

REFERENCES:
patent: 2873241 (1959-02-01), Strzyzewski et al.
patent: 3551235 (1970-12-01), Bassemir et al.
patent: 3551311 (1970-12-01), Nass et al.
patent: 3579485 (1971-05-01), Folzenlogen et al.
patent: 3619246 (1971-11-01), Bragole
patent: 3661614 (1972-05-01), Bassemir et al.

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