Soy protein-based thermoplastic composition for foamed articles
First Claim
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1. 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.
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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.
127 Citations
18 Claims
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1. A biodegradable, soy protein-based thermoplastic composition, comprising the reaction mixture of:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of making a biodegradable, thermoplastic article, comprising:
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(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. - View Dependent Claims (16, 17, 18)
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Specification