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US 2008/0166789 A1Published application
Compostable Vinyl Acetate Polymer Compositions, Composites and Landfill Biodegradation
AssigneeBiotech Products, LLC
InventorRichard F. Grossman
Life of this patent
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Abstract
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.
Claims24
A compostable vinyl acetate polymer composition comprising
- a vinyl acetate polymer and
- a monomeric adduct of an organotitanate or organozirconate as a prodegradant in relative amounts to render the vinyl acetate polymer composition compostable.
A compostable polyvinyl acetate (PVAC) polymer composition comprising
- polyvinyl acetate or a copolymer thereof and
- a monomeric adduct as a prodegradant selected from the group consisting of titanium IV neoalkanolato tri(dioctyl) pyrophosphato-O (adduct) N-substituted methacrylamide, zirconium IV neoalkanolato tri(dioctyl) pyrophosphato-O (adduct) N-substituted methacrylamide, titanium IV bis(dioctyl) pyrophosphato-O (adduct) N,N-dimethylamino-alkyl propenamide, and zirconium IV bis(dioctyl) pyrophosphato-O (adduct) N,N-dimethylamino-alkyl propenamide, said prodegradant in relative amounts to render the vinyl halide polymer composition compostable.
A compostable vinyl acetate polymer article comprising
- an article containing a vinyl acetate polymer and
- a monomeric adduct of an organotitanate or organozirconate as a prodegradant in relative amounts to render the vinyl acetate polymer article compostable.
A compostable polyvinyl acetate (PVAC) article comprising
- an article containing a polyvinyl acetate or a copolymer thereof and
- a monomeric adduct as a prodegradant selected from the group consisting of titanium IV neoalkanolato tri(dioctyl) pyrophosphato-O (adduct) N-substituted methacrylamide, zirconium IV neoalkanolato tri(dioctyl) pyrophosphato-O (adduct) N-substituted methacrylamide, titanium IV bis(dioctyl) pyrophosphato-O (adduct) N,N-dimethylamino-alkyl propenamide, and zirconium IV bis(dioctyl) pyrophosphato-O (adduct) N,N-dimethylamino-alkyl propenamide, said prodegradant in relative amounts to render the polyvinyl acetate or copolymer compostable.
A method of anaerobic biodegradation of a vinyl acetate polymer article in a landfill comprising
- introducing a vinyl acetate polymer article or a physically reduced form thereof into a landfill for anaerobic degradation, said article having a composition of
- a vinyl acetate polymer and
- a monomeric adduct of an organotitanate or organozirconate as a prodegradant in relative amounts to render the vinyl acetate polymer article compostable, and
- anaerobically biodegrading said article in the landfill.
1 more element
Dependencies are inferred from the claim text.