Epoxide-anhydride-hydroxy polymer compositions and method of making same

Claim 1

A COMPOSITION CONTAINING AS ITS ESSENTIAL CONSTITUENTS (1) A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND OF THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCOHOLS, SAID POLYETHER CONTAINING MORE THAN ONE EXPOXIDE PER MOLECULE AND HAVING AN EPOXIDE EQUIVALENT BELOW 1000, (2) A POLYCARBOXYLIC ACID ANHYDRIDE AND (3) A POLYHYDROXY COPOLYMER WHICH IS A REACTION PRODUCT OF (A) AN ALPHA, BETA-ETHYLENICALLY MONOUNSATURATED ALIPHATIC MONOCARBOXYLIC ACID HAVING NOT MORE THAN TWELVE CARBON ATOMS, (B) AN ESTER-FORMING COMPOUND OF THE GROUP CONSISTING OF DIHYDRIC ALCOHOLS, ALKYL OXIRANES, MONOGLYCIDYL ETHERS AND MONOGLYCIDYL ESTERS, EACH HAVING NOT OVER TEN CARBON ATOMS, AND (C) AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE WITH THE ALPHA, BETAMONOCARBOXYLIC ACID AND SELECTED FROM THE GROUP CONSISTING OF MONOVINYL AROMATIC HYDROCARBONS, MONOVINYL HALOGENATED AROMATIC HYDROCABRONS, VINYL ALKYL ETHERS HAVING NOT MORE THAN TWENTY CARBON ATOMS IN THE ALKYL ALKENYL CYANIDES OF NOT OVER FOUR CARBON ATOMS, MONOETHYLENICALLY UNSATURATED MONOCARBOXYLIC ACID ESTERS OF SATURATED MONOHYDRIC ALCOHOLS, THE ACIDS HAVING NOT MORE THAN FOUR CARBON ATOMS AND THE ALCOHOLS HAVING NOT MORE THAN TWENTY CARBON ATOMS, AND MONOETHYLENICALLY UNSATURATED MONOHYDRIC ALCOHOL ESTERS OF SATURATED MONOCARBOXYLIC ACIDS, THE ALCOHOLS HAVING NOT MORE THAN FOUR CARBON ATOMS AND THE ACIDS HAVING NOT MORE THAN TWENTY CARBON ATOMS, SAID POLYHYDROXY COPOLYMER CONTAINING 0.5 TO 25 PERCENT BY WEIGHT HYDROXYL GROUPS, WHEREIN THE ANHYDRIDE AND GLYCIDYL POLYETHER ARE PRESENT IN AN EQUIVALENT RATIO OF 0.5:1 TO 4:1, AND THE POLYHYDROXY COPOLYMER IS PRESENT IN AN AMOUNT OF FROM 5 TO 80 PERCENT BY WEIGHT OF THE TOTAL COMPOSITION.