Silicone abrasion resistant coatings for plastics

Details Silicone abrasion resistant coatings for plastics Silicone abrasion resistant coatings for plastics

1978-05-01

1981-01-20

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Silicon containing other than solely as silicon dioxide or...

C09K 300

Patent

active

042460387

ABSTRACT:
There is provided by the present case a novel primer composition for plastics, metals, glass and ceramics composed of optionally a silane containing hydrolyzable groups and functional groups such as, alkoxy nitrogen functional groups mixed with the reaction product of the foregoing silane and an anhydride selected from the class consisting of cyclic anhydrides and cyclic dianhydrides. The foregoing primer composition is usually applied to the substrate to be protected in solution form utilizing, preferably, an aliphatic alcohol solvent. The abrasion protective top layer itself consists of at 80 to 100% solids of a silane which may be an alkoxylated silane or more preferably an acyloxy functional silane wherein the top coat is preferably cured on top of primer layer which is applied to the substrate at a temperature of anywhere from 25.degree. to 130.degree. C. depending on the glass transition temperature of the substrate which should not be exceeded.

REFERENCES:
patent: 3576031 (1971-04-01), Holub et al.
patent: 3922436 (1975-11-01), Bell et al.

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