Method for the preparation of a polyvinyl chloride resin

Details Method for the preparation of a polyvinyl chloride resin Method for the preparation of a polyvinyl chloride resin

C - Chemistry, Metallurgy

08

F

402/304, 402/395

C08F 14/06 (2006.01) C08F 2/20 (2006.01)

Patent

CA 1261543

ABSTRACT OF THE DISCLOSURE The dispersing agent in the suspension polymerization of vinyl chloride according to the inventive method is a combination of a monomer-soluble non-ionic surface active agent and a partially crosslinked copolymer of an ethylenic- ally unsaturated polymerizable carboxylic acid compound and a compound having at least two ethylenically unsaturated polymerizable linkages in the molecule. By virtue of the spe- cific dispersing agent, the powdery polyvinyl chloride resin obtained by the polymerization has a high bulk density, a greatly decreased number of fish eyes and remarkably improv- ed thermal stability.

492461

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