Halogen containing polymeric resins having improved heat and light stability

Claim 2

A heat and light stable polymer composition comprising a vinyl polymer containing more than 5 weight percent halogen substituent and a stabilizing amount of a salt of a di- or trivalent metal selected from the group consisting of calcium, zinc, cadmium, barium, and tin, with the reaction product of an alpha-olefin of 3 to 60 carbon atoms and maleic anhydride or a mono-substituted maleic anhydride, wherein said reaction product is prepared from reaction of 1 to about 20 moles of said olefin per mole of said anhydride and the substituent of the substituted anhydride is alkyl or alkoxy.

Claim 3

A heat and light stabilized composition comprising a vinyl halide resin and a stabilizing amount of a metal salt of a polymeric reaction product of an alpha-olefin and maleic anhydride, said metal salt having recurring units of the formula: ##EQU7## or a metal monomeric organic carboxylate salt represented by the formula: ##EQU8## or mixtures thereof wherein M represents a di- or tetravalent metal selected from the group consisting of calcium, zinc, cadmium, barium and tin; n is 1 or 2 in formulas (B) and (D) and 2 or 4 in formulas (A) and (C); R and R' are independently selected from the group consisting of hydrogen, aryl, alkyl, aralkyl, alkaryl and substituted derivatives thereof having 1 to 17 carbon atoms which can be halogenated.

Claim 4

A heat and light stabilized composition comprising a vinyl halide resin and a stabilizing amount of a metal salt of a polymeric reaction product of an alpha-olefin and maleic anhydride, said metal salt having recurring units of the formula: ##EQU7## or a metal monomeric organic carboxylate salt represented by the formula: ##EQU8## or mixtures thereof wherein M represents a di- or tetravalent metal selected from the group consisting of calcium, zinc, cadmium, barium and tin; n is 1 or 2 in formulas (B) and (D) and 2 or 4 in formulas (A) and (C); R and R' are independently selected from the group consisting of hydrogen, aryl, alkyl, aralkyl, alkaryl and substituted derivatives thereof having 1 to 17 carbon atoms which can be halogenated.

Claim 5

The heat and light stabilized resin composition of claim 2 comprising a vinyl halide resin and from about 0.1% to about 10% by weight of said resin of said metal salt.

Claim 6

The heat and light stabilized resin composition of claim 2 comprising a vinyl halide resin and from about 0.1% to about 10% by weight of said resin of the calcium salt of the reaction product of octadecene-1 and maleic anhydride.

Claim 7

The heat and light stabilized resin composition of claim 2 comprising a vinyl halide resin and from about 0.1% to about 10% by weight of said resin of the zinc salt of octadecene-1 and maleic anhydride.