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US 5,710,190 AGranted
Soy protein-based thermoplastic composition for foamed articles
AssigneeIowa State University Research Foundation, Inc.
InventorsJay-lin Jane, Su She Zhang
Life of this patent
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Abstract
The invention provides a biodegradable thermoplastic composition made of soy protein, a plasticizing agent, a foaming agent, and water, that can be molded into biodegradable articles that have a foamed structure and are water-resistant with a high level of physical strength and/or thermal insulating properties.
Claims18
A biodegradable, soy protein-based thermoplastic composition, comprising the reaction mixture of:
- (a) about 50-100 parts by weight soy protein;
- (b) about 0.1-10 parts by weight of a sulfonylhydrazide foaming agent;
- (c) about 5-60 parts by weight organic plasticizing agent;
- and
- (d) about 5-20 parts by weight water;
- the composition being a moldable, biodegradable thermoplastic composition having a foamed, cellular structure when molded into an article.
3 more elements
A method of making a biodegradable, thermoplastic article, comprising:
- (a) combining together to form a reaction mixture:
- (i) about 50-100 parts by weight soy-based protein;
- (ii) about 0.1-20 parts by weight of a sulfonylhydrazide foaming agent;
- (iii) about 5-60 parts by weight plasticizing agent;
- and
- (iv) about 5-20 parts by weight water;
- (b) processing the mixture to form a molded article having a foamed, cellular structure.
4 more elements
Dependencies are inferred from the claim text.