1,3-Dicarbonyl compounds and polyvinyl halide resin compositions containing the same

Claim 1

A polyvinyl halide resin composition having improved resistance to deterioration by light and/or when heated at 350° F., comprising a polyvinyl halide resin formed at least in part of the recurring group: ##STR77## and having a halogen content in excess of 40%, where X 1 is halogen and X 2 is either hydrogen or halogen, and a 1,3-dicarbonyl compound having the formula: ##STR78## wherein: R 1 is selected from the group consisting of hydrogen, alkyl groups having from one to about eighteen carbon atoms; cycloalkyl, cycloalkylalkylene, and alkylcycloalkyl groups having from five to about eighteen carbon atoms; and aryl, aralkyl and alkaryl groups having from six to about eighteen carbon atoms; and such groups substituted with one or more groups selected from the group consisting of halogen, hydroxy, and alkoxy having from one to about eighteen carbon atoms; R 2 is selected from the group consisting of alkyl groups having from one to about eighteen carbon atoms; cycloalkyl, cycloalkylalkylene, and alkylcycloalkyl groups having from five to about eighteen carbon atoms; and aryl, aralkyl and alkaryl groups having from six to about eighteen carbon atoms; and such groups substituted with one or more groups selected from the group consisting of halogen, hydroxy, alkoxy OR 1 , ester COOR 1 , alkyl and alkoxycarbonyl alkyl having one to about eighteen carbon atoms; and R 3 is selected from the group consisting of hydrogen, alkyl groups having from one to about eighteen carbon atoms; cycloalkyl, cycloalkylalkylene, and alkylcycloalkyl groups having from five to about eighteen carbon atoms; and aryl, aralkyl and alkaryl groups having from six to about eighteen carbon atoms; and such groups substituted with one or more groups selected from the group consisting of halogen, hydroxy, alkoxy OR 1 and ester COOR 1 , having from one to about eighteen carbon atoms or the corresponding metal enolate salt thereof.