Ethylene-vinyl ester copolymer emulsions

Details Ethylene-vinyl ester copolymer emulsions Ethylene-vinyl ester copolymer emulsions

C - Chemistry, Metallurgy

08

L

400/3075

C08L 23/08 (2006.01) C08L 33/06 (2006.01) C08L 51/06 (2006.01) C10L 1/14 (2006.01) C10L 1/195 (2006.01) C08L 51/00 (2006.01) C08L 53/00 (2006.01) C10L 1/18 (2006.01) C10L 1/22 (2006.01)

Patent

CA 1286432

ABSTRACT OF THE DISCLOSURE Concentrated emulsions, adaptable to use as pour point improvers, of (1) copolymers of ethylene and a vinyl ester of a C1-C24-carboxylic acid and/or (2) polyalkyl- (meth)acrylic acid ester polymers in a liquid carrier medium which does not dissolve said polymers, said emulsions addi- tionally containing, as an emulsifier, a graft- or block-co- polymer of the formula A-Y, wherein A is a segment of a copolymer of ethylene and a vinyl ester of a C1-C24-carboxylic acid (corresponding to polymer P1) or of a polymer of esters of acrylic acid and/or methacrylic acid with a C1-C40-alkanol, wherein Y is at least one segment obtained by the polymerization of vinyl monomers which are predominantly esters of acrylic acid or methacrylic acid with a C1-C40-alkanol, and wherein the carrier medium is capable of dissolving segments Y; oils containing such emulsions as pour point improvers.

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