Shaped article of cellulose hydrate with a coating of plastic material of chemically modified protein and process for the production thereof

Abstract

Abstract This invention relates to a process for coating the surface of a shaped article of cellulose hydrate with a layer of polymer material which comprises applying to the surface of a shaped article in the gel state and based on cellulose hydrate, a liquid layer of an aqueous solution of a chemically modified protein obtained by mixing an aqueous alkaline protein solution with an aqueous solution of N-methylolacrylamide or N-methylol-methacrylamide or of the alkoxy derivatives thereof of aliphatic alcohols with 1 to 8 carbon atoms, particularly of organic, tetrafunctional, doubly unsaturated compounds of the general formula ##STR1## in which R 1 and R 2 are hydrogen or an alkyl group with 1 to 6 carbon atoms, and R 3 is the group --(CH 2 ) n --, n being an integer from 1 to 8, or the group ##STR2## in which R 4 is an alkyl group with 1 to 18 carbon atoms, subjecting the liquid mixture to a dwell time, heating the coated shaped article, and wetting the shaped article. The invention also relates to a shaped article of cellulose hydrate having a coating of protein thereon.

Inventors

• 👤 Klaus-Dieter Hammer
• 👤 Wolfgang Klendauer
• 👤 Martin Schroder

Bibliographic Details