Stabilized vinyl halide compositions containing hydrotalcites
AssigneeSynthetic Products Company
InventorsDavid M. Tanno, Richard F. Grossman, Eric Farone
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Abstract
Hydrotalcites are disclosed as stabilizers for vinyl halide resins where the BET has a specific surface area of at least about 40 m.sup.2 /g, preferably about 50 to 60 m.sup.2 /g.
Claims8
A stabilized vinyl halide resin composition comprising a vinyl halide resin and as a heat stabilizer a hydrotalcite having a BET specific surface area greater than about 40 m.sup.2 /g, the hydrotalcite in an effective amount to provide heat stability to said vinyl halide resin.
A stabilized vinyl halide resin composition comprising a vinyl halide resin and as a heat stabilizer a hydrotalcite having a BET specific surface area of about 50 to about 60m.sup.2 g the hydrotalcite in an effective amount to provide heat stability to said vinyl halide resin, and a stabilizing metal salt of a metal selected from the group consisting of calcium, zinc, barium, cadmium, and antimony, and mixtures of said metal salts.
Dependencies are inferred from the claim text.