METHOD OF PRODUCTION OF HOMOPOLYMERS OR COPOLYMERS OF VINYLCHLORIDE

摘要

Method of production is realized by suspensing homopolymerization or copolymerization of vinylchloride, in which a protecting colloid in mass 0,02 to 0,3 per cent of weight related on monomers is created from 9 to 90 per cent of weight with minimum one partial ketal and/or with acetal of polyvinylalcohol or of partial saponifyied polyvinylacetate with polymerizating degree 650 to 1800. In cause of acetalisated or ketalizated partial saponifyied polyvinylacetate is degree of hydrolysis 68 to 94 per cent mol. Their degree of acetalisation or ketalisation is 0,5 to 30 per cent surplus of protecting koloids to 100 per cent weight is created with minimum one cellulose ether.