Foamable thermosetting compositions and methods of coating there

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

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521 78, 521115, 521117, 521138, 521178, C08J 900

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active

046083987

ABSTRACT:
Surface coating methods and compositions are disclosed which eliminate many of the disadvantages associated with known coating processes from pollution, equipment, materials, energy, labor and cost standpoints. According to techniques described, thermosetting liquid compositions containing film-forming solids are formulated, then conveyed in the foam state toward a surface, and upon foam disintegration, form a film of solids on the surface. The foamable thermosetting resin compositions contain a curable resin having a free hydroxyl or carboxyl group, a curing agent consisting of a lower (C.sub.1 -C.sub.4) alkoxylated amine for reaction with the resin hydroxyl or carboxyl group and a liquid blowing agent consisting of a C.sub.1 -C.sub.4 alkanol which is also a by-product of the thermosetting reaction.

REFERENCES:
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patent: 4143029 (1979-03-01), Matthews et al.
patent: 4147678 (1979-04-01), Mao et al.
patent: 4369258 (1983-01-01), Johnson
patent: 4374207 (1983-02-01), Stone et al.
patent: 4482651 (1984-11-01), Reichel et al.

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