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US 5,367,003 AGranted
Disposable degradable recyclable plastic articles and synthetic resin blends for making the same
OwnerRobert J. Petcavichinventor
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OwnerRobert J. Petcavichinventor
Estimating the term…
Environmentally friendly, disposable, degradable and/or recyclable plastic articles are made from water soluble, miscible, high molecular weight, thermoplastic, polymeric resin blends that are comprised by weight of about 65% to 95% high molecular weight water soluble thermoplastic resin having an inverse solubility characteristic and about 35% to 5% of at least one of certain high molecular weight thermoplastic polymers that are functionally compatible (miscible) with the inversely soluble resin. The articles are insoluble when used for their intended purposes, but become soluble when exposed to tepid or cool water and degradable when buried in a land fill or compost. The inversely soluble resin comprises high molecular weight poly(ethylene oxide). The compatible polymer is selected from the group consisting of Nylon 11, Nylon 12, polycaprolactone, polycaprolactone, polyethylene-co-acrylic acid, polyethylene-co-methacrylic acid, polyethylene-co-vinylacetate and polyethylene-co-vinylalcohol. The articles are hydrodegradable, e.g., flushable, biodegradable, e.g., compostable, and can be recycled if desired, thereby eliminating the trash and garbage problems inherent in the use of nondegradable plastics.
A disposable, degradable, plastic article of manufacture made from a miscible, high molecular weight, water dispersable, thermoplastic polymeric resin blend consisting of in the order of about 80% high molecular weight poly(ethylene oxide), in the order of about 20% of a high molecular weight thermoplastic copolymer that is functionally compatible with said poly(ethylene oxide) and consisting of one or the other of polyethylene-co-acrylic acid and polyethylene-co-vinyl alcohol, and up to about 5% plasticizer.
A method of making disposable, degradable plastic articles of manufacture comprising the steps of
A disposable, degradable, plastic article of manufacture made from a miscible, high molecular weight, water dispersable, thermoplastic polymeric resin blend consisting of from about 65% to about 95% high molecular weight poly(ethylene oxide), from about 35% to about 5% of at least one high molecular weight thermoplastic polymer that is functionally compatible with said poly(ethylene oxide) and selected from the group consisting of polyethylene-co-acrylic acid, polyethylene-co-methacrylic acid, polyethylene-co-vinyl acetate, polyethylene-co-vinyl alcohol, Nylon 11 and Nylon 12, and up to about 10% of plasticizer, lubricant and fillers.
A method of making disposable, degradable, plastic articles of manufacture comprising the steps of
Dependencies are inferred from the claim text.