Abstract: Particulate solid heat stabilizer compositions for vinyl halide polymers are provided having about 30% to 90% by weight hydrotalcite particles represented by a sigmoidal curve on a cartesian coordinate plot of zeta potential (mV) versus pH. The curve has negative zeta potential values balanced against positive zeta potential values over a pH range and an inflection point between a pH of about 3 about 6 representing the isoelectric point (IEP) between said negative and positive zeta potential values. The stabilizer compositions are essentially free flowing, storage stable, and processable upon mixing components of the composition for blending with a vinyl halide polymer in effective amounts to confer heat stabilizing effectiveness upon said polymer.

Abstract: Particulate solid heat stabilizer compositions for vinyl halide polymers are provided having about 30% to 90% by weight hydrotalcite particles represented by a sigmoidal curve on a cartesian coordinate plot of zeta potential (mV) versus pH. The curve has negative zeta potential values balanced against positive zeta potential values over a pH range and an inflection point between a pH of about 3 about 6 representing the isoelectric point (IEP) between said negative and positive zeta potential values. The stabilizer compositions are essentially free flowing, storage stable, and processable upon mixing components of the composition for blending with a vinyl halide polymer in effective amounts to confer heat stabilizing effectiveness upon said polymer.

Abstract: Shelf stable liquid overbased calcium carboxylates are prepared by reacting a calcium base with a monocarboxylic acid, and carbonating in the presence of a promoter mixture with a phenol and an alcohol under controlled temperature conditions, to produce shelf stable liquids. Mixed metal stabilizer compositions are prepared by blending the stable liquid calcium carboxylate with a metal carboxylate of zinc, cadmium or tin. The mixed metal carboxylates are also shelf stable and are used for stabilizing halogen-containing polymers to provide heat stability, clarity and improved plate out properties.

Abstract: A method of stabilizing vinyl halide resin composition such as PVC by incorporating a mixed zinc/alkaline earth metal carboxylate stabilizer for said resin, a hydrotalcite and dibutyltin oxide in an amount to confer heat stability to said composition.

Abstract: A polymeric polyvalent metal aromatic polycarboxylate is used in vinyl halide resin compositions containing heavy metal stabilizers to reduce extractable heavy metals from molded resin products when tested by the toxicity characteristic leaching procedure (TCLP) of 40 CFR 261.

Abstract: A method of stabilizing vinyl halide resin composition such as PVC by incorporating a mixed zinc/alkaline earth metal carboxylate stabilizer for said resin, a hydrotalcite and antimony trioxide in an amount to confer heat stability to said composition.

Abstract: Electrical insulating compositions of vinyl halide resins (PVC) are formulated to contain a polymeric metal aromatic polycarboxylate as an electrical insulating additive. For example, polymeric calcium terephthalate is used in minor amounts of about 0.2 to 0.5 phr PVC to provide an excellent insulating effect. Lead stabilizers may be avoided in the polymer compositions and, instead, nontoxic metal salt heat stabilizers such as calcium, barium, zinc, etc., may be used.

Abstract: A vinyl halide resin (PVC) flooring composition having reduced water absorption containing polyhydric alcohol, metal salt stabilizer, filler and an aromatic carboxylic acid such as benzoic, methylbenzoic or naphthoic acid as an anti-water absorption agent. The compositions may be employed for dramatic improvement against swelling and buckling of flooring tile and sheet.

Abstract: A vinyl halide resin (PVC) flooring composition having reduced water absorption containing polyhydric alcohol, metal salt stabilizer, filler and an aromatic carboxylic acid such as benzoic acid as an anti-water absorption agent. The compositions may be employed for dramatic improvement against swelling and buckling of flooring tile and sheet.