Synthetic Products Company

Hammond Group, Inc.

Biotech Products, LLC

Plastic Specialties and Technologies, Inc.

Richard F Grossman

David M Tanno

Paulette Baker

Francis W McKane, Jr

Eric Farone

Heavy metal-free compostable polymers, composites and articles anaerobically biodegrade in landfills in a relatively short time. Heavy metal-free composite polymeric articles and sheets such as indoor or outdoor signs, billboards, banners, images, protective barriers, backdrops and wall coverings have very useful service durations and yet are landfill biodegradable.

Heavy metal-free and anaerobically compostable vinyl halide compositions, articles and landfill biodegradation

Compostable hydrocarbon polymers, composites, and articles anaerobically biodegrade in landfills in a relatively short time. Composite polymeric articles and sheets such as indoor or outdoor signs, billboards, banners, images, protective barriers, backdrops and wall coverings have very useful service durations and yet are landfill biodegradable.

Anaerobically compostable polymeric compositions, articles and landfill biodegradation

Compositions of vinyl acetate polymers such as polyvinyl acetate (PVAc) are rendered compostable by a monomeric adduct of an organotitanate or zirconate as a prodegradant. PVAc sheets and composites are compostable in landfills.

Compostable vinyl acetate polymer compositions, composites and landfill biodegradation

Compositions of vinyl halide polymers such as PVC are rendered compostable by a prodegradant system of a monomeric adduct of an organotitanate or zirconate and an organotin. PVC sheets and composites are compostable in landfills.

Compostable vinyl halide polymer compositions, composites and landfill biodegradation

Compositions of vinyl halide polymers such as PVC are rendered compostable by a prodegradant system of an organotitanate or zirconate and an organotin. PVC sheets and composites are compostable in landfills.

Compostable vinyl halide polymer compositions and composite sheets

Synthetic polymer compositions contain antibiotics as antidegradants. Antibiotics from classes of glycopeptides and &bgr;-lactams have been found to prevent or inhibit synthetic polymer degradation.

Synthetic polymer compositions containing antibiotics as antidegradants

Organotin oxides are synthesized by reacting powdered tin metal with an alcohol at elevated temperatures on the order of about 200-400&deg; C. Monoalkyltin, dialkyltin and trialkyltin oxides are produced in quantitative yields according to the method.

Synthesis of organotin oxides

Organotin oxides are synthesized by reacting powdered tin metal with an alcohol at elevated temperatures on the order of about 200-400&deg; C. Dialkyltin oxides are produced in quantitative yields according to the method.

Vinyl halide resin compositions containing a metal compound stabilizer and coated acid absorber particles, where the coating consists of a tin-based coating or a complex calcium/zinc/strontium phosphate-based coating, are used to confer heat stability to such compositions. Use of the costabilizers of this invention results in economic advantages and material cost savings.

Halogenated polymer compositions containing a metal compound stabilizer

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.

Heat stabilization of PVC compositions containing a mixed metal

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.

Method and composition for reducing extractable heavy metals from vinyl

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.

Electrical insulating vinyl halide resin compositions

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.

Stabilized vinyl halide compositions containing hydrotalcites

Ruthenium aromatic polycarboxylates from the class consisting of ruthenium isophthalate, ruthenium trimesate, ruthenium trimellitate, ruthenium pyromellitate and ruthenium 5-sulfonate-1,3-isophthalate have been prepared and have been found to be especially suitable as semiconductors.

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Wilmington, DE, United States of America

Richard F Grossman