Precipitation polymerization of terpolymers of a vinyl...

Details Precipitation polymerization of terpolymers of a vinyl... Precipitation polymerization of terpolymers of a vinyl...

C - Chemistry, Metallurgy

08

F

402/405, 402/8

C08F 226/06 (2006.01) C08F 220/02 (2006.01) C11D 3/37 (2006.01)

Patent

CA 2019556

What is described herein is a precipitation polymerization process and terpolymer products produced thereby. Polymerization is carried out in a reaction mixture of a vinyl lactam, e.g. vinyl pyrrolidone or vinyl caprolactam, a polymerizable carboxylic acid, e.g. acrylic acid or methacrylic acid, and a hydrophobic monomer, e.g. lauryl methacrylate, in a predetermined compositional range, in the presence of a polymerization initiator, and in an aliphatic hydrocarbon solvent, particularly a C3-C10 saturated hydrocarbon, which is branched or unbranched, cyclic or acylic, and, preferably, is heptane or cyclohexane. The terpolymers are obtained in high yield, as a white powder, which can be filtered and dried easily.

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