A method of preparing a plastified composition of polyvinyl alcohol (Machine-translation by Google Translate, not legally binding)

摘要

A method of preparing a plasticized polyvinyl alcohol composition, in which pulverulent or granular "partially hydrolyzed" polyvinyl alcohol (as defined in the specification) and from about 5 to about 50 parts by weight of trimethylol propane per 100 parts of alcohol "partially hydrolyzed" polymers are mixed in the dry state and heated slowly to a temperature above the melting point of trimethylolpropane, while keeping the mixture moving. (Machine-translation by Google Translate, not legally binding)