METHOD OF PRODUCING POLYVINYL CHLORIDE, HAVING EXCELLENT PROCESSIBILITY Russian patent published in 2010 - IPC C08F14/06 C08F114/06 

FIELD: chemistry.

SUBSTANCE: method of producing polyvinyl chloride involves the following steps: i) feeding water, a polymerisation initiator, an additive in form of a protective colloid, pH regulator and a vinyl chloride monomer into a reactor; ii) first polymerisation by keeping temperature inside the reactor at 30-80°C; and iii) second polymerisation by raising temperature by 5-20°C from first polymerisation temperature when degree of polymerisation conversion reaches 60% or higher, and addition of an anti-oxidant in amount of 0.001-0.03 pts. wt per 100 pts. wt of all the monomer with completion of polymerisation.

EFFECT: polyvinyl chloride has excellent processibility.

12 cl, 21 ex