Silicone-epoxy coating compositions
AssigneeDow Corning Corporation
InventorsGary E. LeGrow, Robert E. Kalinowski
Life of this patent
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Abstract
Compositions suitable for sprayable, flexible coatings for food containers are made by mixing cycloaliphatic or bisphenol-A-epichlorohydrin epoxy resins, an alkoxylated monophenylsiloxane-dimethylsiloxane copolymer and aluminum chelates of beta-dicarbonyl compounds. Optionally, the coatings can contain phenyltrialkoxysilane.
Claims8
A composition of matter suitable for spray coating consisting essentially of (1) 50 to 80 percent by weight of a cycloaliphatic epoxy resin or a bisphenol A epoxy resin, (2) from 6 to 25 percent by weight of an alkoxylated siloxane copolymer of monophenylsiloxane and dimethylsiloxane units in a mol ratio of from 2:1 to 1.9:1, (2) containing from 10 to 20 percent by weight silicon-bonded alkoxy groups having 1 to 2 carbon atoms, (3) from 0 to 40 percent by weight phenyltrimethoxysilane or phenyltriethoxysilane and (4) from 0.04 to 1.2 percent by weight of an aluminum chelate of a beta-dicarbonyl compound.
Dependencies are inferred from the claim text.