초록 ▼

A method wherein grain flour proteins are cross-linked with aldehydes and bleached with a bleaching agent to form cross-linked transparent polymers is described. The process uses ethanol and water for the extraction at acid or basic pH's and optionally heating with or without a reducing agent to pro

A method wherein grain flour proteins are cross-linked with aldehydes and bleached with a bleaching agent to form cross-linked transparent polymers is described. The process uses ethanol and water for the extraction at acid or basic pH's and optionally heating with or without a reducing agent to provide the polymers to be bleached and cross-linked. The polymers are particularly useful as films for packaging.

대표청구항 ▼

[ We claim:] [1.] A method for forming a transparent polymer which comprises:(a) providing a defatted and destarched gluten dissolved in an aqueous solution of a water miscible solvent for the gluten solution;(b) mixing the solution with a cross-linking agent which reacts with the gluten and a bleac

[ We claim:] [1.] A method for forming a transparent polymer which comprises:(a) providing a defatted and destarched gluten dissolved in an aqueous solution of a water miscible solvent for the gluten solution;(b) mixing the solution with a cross-linking agent which reacts with the gluten and a bleaching agent which bleaches the gluten in the presence of the cross-linking agent, wherein the gluten is cross-linked to provide a polymer in the solution;(c) casting the polymer in the solution; and(d) drying the polymer to remove at least a portion of the water miscible solvent and water and to provide the transparent polymer.