SUSPENSION POLYVINYLCHLORIDE HAVING ELEVATED SOLUBILITY AND AGGREGATIVE STABILITY IN VARNISH SOLVENTS AND USE THEREOF Russian patent published in 2007 - IPC C08F14/06 C08F114/06 C09D127/06 

FIELD: polymer materials.

SUBSTANCE: suspension polyvinylchloride according to invention represents suspension polyvinylchloride with Fickentcher constant = 35-42, which is white powder of nonporous glass-like particles characterized by ratio of Fickentcher constant to "plasticizer absorption time" ranging from 0.3 to 3.0. The powder is prepared via water-suspension polymerization of reaction mixture containing vinyl chloride, peroxide initiator, water, stabilizer, and molecular mass regulator (chlorinated hydrocarbon), which polymerization proceeds on heating and vigorous stirring of reaction mixture (0.5-3.5 s^-1) at 60-80°C. Thus obtained polyvinylchloride shows elevated solubility in organic vanish solvents (at least 99%) and finds use in preparation of compositions with elevated aggregative stability in organic vanish solvents useful in production of stable high-concentration varnishes and enamels and containing volatile compounds up to 50%. Polyvinylchloride with indicated characteristics is employed as binder in production of lacquer materials capable of forming coatings with good physicochemical and protective properties. Polyvinylchloride solution itself is characterized by high stability on storage, also at negative temperatures.

EFFECT: extended application area of polyvinylchloride.

5 cl, 2 tbl