Polyvinyl resin compositions plasticized with partially epoxidized fatty acid esters

Claim 1

A PLASTICIZED POLYVINYL RESIN COMPOSITION COMPRISING A POLYVINYL RESIN FROM THE GROUP CONSISTING OF POLYVINYL BUTYRAL, THE HOMOPOLYMERS OF VINYL CHLORIDE AND VINYL ACETATE, AND THE COPOLYMERS OF VINYL CHLORIDE WITH VINYLIDENE CHLORIDE, AND VINYL CHLORIDE WITH VINYL ACETATE, AND AN EPOXIDIZED ESTER, SAID EPOXIDIZED ESTER HAVING BEEN PREPARED BY EPOXIDATION OF AN ESTER FORMED BY ESTERIFYING (A) A MIXTURE OF FATTY ACIDS HAVING AT LEAST 18 CARBON ATOMS AND CONTAINING AT LEAST ABOUT AS GREAT A PERCENTAGE OF MONOETHYLENICALLY UNSATURATED FATTY ACIDS AS IS COMBINED IS SAFFLOWER OIL AND AT MORE MONOETHYLENICALLY UNSATURATED FATTY ACIDS THAN IS CONTAINED IS TALL OIL AND AT LEAST ABOUT AS GREAT A PERCENTAGE OF POLYETHYLENICALLY UNSATURATED FATTY ACIDS AS IS COMBINED IN CORN OIL AND NOT MORE POLYETHYLENICALLY UNSATURATED FATTY ACIDS THAN IS COMBINED IN SAFFLOWER OIL (B) AN ALCOHOL FROM THE GROUP CONSISTING OF THE LOWER ALIPHATIC MONOHYDRIC ALCOHOLS AND THE ALIPHATIC POLYHYDRIC ALCOHOLS, AND SAID EPOXIDIZED ESTER HAVING BEEN EPOXIDIZED TO THE EXTENT REQUIRED TO EPOXIDIZE SUBSTANTIALLY ALL OF THE DOUBLE BONDS PRESENT IN EACH ETHYLENICALLY MONOUNSATURATED AND ONE ONLY OF THE DOUBLE BONDS PRESENT IN EACH ETHYLENICALLY POLYUNSATURATED FATTY ACID RESIDUE IN SAID ESTER, BY REACTION OF SAID ESTER UNDER EPOSIDIZING CONDITIONS WITH A PERACID EMPLOYED IN AN AMOUNT OF ABOUT 1 TO 1.O MOLES OF PERACID FOR EACH DOUBLE BOND IN EACH MOLE OF ESTERIFIED ETHYLENICALLY MONOUNSATURATED ACID PLUS 1 TO 1.3 MOLES OF PERACID FOR ONE DOUBLE BOND ONLY OF EACH MOLE OF ESTERIFIED ETHYLENICALLY POLYUNSATURATED ACID.