Epoxy-maleate-phosphate copolymers

Details Epoxy-maleate-phosphate copolymers Epoxy-maleate-phosphate copolymers

C - Chemistry, Metallurgy

08

F

402/267, 400/540

C08F 283/00 (2006.01) C08F 299/02 (2006.01) C08G 59/14 (2006.01)

Patent

CA 1237236

EPOXY-MALEATE-PHOSPHATE COPOLYMERS ABSTRACT There is disclosed solution copolymers of monoethylenically unsaturated monomers including a proportion of monoethylenically unsaturated carboxylic acid, with an oxirane-free epoxy acid ester phosphate having adducted onto the oxirane groups of a starting polyepoxide at least 10% thereof of ortho phosphoric acid as well as at least 0.5% by weight of a monoester of a saturated monohydric alcohol with a monoethylenically unsaturated dicarboxylic acid which resists homopolymerization, the remaining oxirane groups of the polyepoxide being esterified with monocarboxylic acid, etherified with monoalcohol or hydrolyzed with water. These copolymers can be neutralized with a volatile amine, especially ammonia and cured with aminoplast or phenoplast resins to provide coatings which cure to greater flexibility and better resistance to blushing on pasteurization exposure.

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