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US 5,523,293 AGranted
Soy protein-based thermoplastic composition for preparing molded articles
AssigneeIowa State University Research Foundation, Inc.
InventorsJay-Lin Jane, Shuhuan Wang
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Abstract
The invention provides biodegradable, thermoplastic compositions made of the reaction product of soybean protein and a carbohydrate filler, a reducing agent, a plasticizer, water, and optional additives as desired. The composition has a high degree of flowability for processing by extrusion and injection molding into solid articles that are biodegradable with a high degree of tensile strength and water resistance.
Claims25
A biodegradable, soy protein thermoplastic composition, comprising the reaction mixture of:
- (a) about 25-65 wt-% soy protein;
- (b) about 30-40 wt-% starch filler;
- (c) about 5-35 wt-% plasticizer;
- (d) about 0.5-2.5 wt-% reducing agent;
- and
- (e) about 5-35 wt-% water;
- the composition having a flowability suitable for processing and forming a solid article by extrusion, injection molding, or a combination thereof.
4 more elements
Dependencies are inferred from the claim text.