Protein-containing foams, manufacture and use thereof
AssigneeBiopolymer Technologies, Ltd.
InventorsAnthony A. Parker, Joseph J. Marcinko
Life of this patent
Estimating the term…
Abstract
The invention relates generally to protein-containing polyurethane foams, methods and compositions for making the polyurethane foams, and articles comprising the polyurethane foams.
Claims45
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A polyurethane foam having reduced density due to the presence of protein containing composition, said polyurethane foam comprising a reaction product of a mixture comprising:
- (a) an isocyanate-based reactant;
- (b) an optional isocyanate-reactive compound;
- and
- the protein containing composition enriched in water-soluble polypeptides so the protein containing composition reduces the density of the polyurethane foam by at least 5% relative to a polyurethane foam produced from the same mixture but lacking the protein containing composition.
A polyurethane foam comprising a reaction product of a mixture comprising
- (a) an isolated protein containing composition, wherein the protein is capable of dispersing PMDI in an aqueous medium;
- (b) an isocyanate-based reactant;
- and
- (c) an optional isocyanate-reactive compound.
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A method of producing a polyurethane foam having reduced density due to the presence of protein containing composition, said polyurethane foam, comprising the steps of:
- (a) mixing a protein containing composition and an isocyanate-based reactant to produce a mixture;
- and
- (b) permitting the mixture to produce a polyurethane foam, wherein the protein containing composition is enriched in water-soluble polypeptides in order to reduce the density of the polyurethane foam by at least 5% relative to a polyurethane foam produced from the same mixture but lacking the protein containing component.
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Dependencies are inferred from the claim text.