Polymer dispersions for the treatment of leather

Details Polymer dispersions for the treatment of leather Polymer dispersions for the treatment of leather

C - Chemistry, Metallurgy

14

C

8/53, 400/9146

C14C 11/00 (2006.01) C08F 220/42 (2006.01) C08F 236/12 (2006.01)

Patent

CA 1164122

ABSTRACT OF THE DISCLOSURE Aqueous dispersions which are suitable for the treatment of leather and have a pH of from 2 to 7 and particle diameters of from 20 to 150 nm of polymers having a T.lambda.max value below 20 C of: (A) from 20 to 70 parts by weight of one or more acyclic conjugated dienes having from 4 to 9 carbon atoms; (B) from 10 to 40 parts by weight of acrylonitrile and/or methacrylonitrile; (C) From 1 to 5 parts by weight of allylsuphonic acid and/or methallyl sulphonic acid or water-soluble salts thereof: (D) From 5 to 20 parts, by weight of acrylic and/or methacrylic acid hydroxyalkyl esters having from 2 to 4 carbon atoms in the hydroxyalkyl group; and (E) 0 to 40 parts by weight of acrylic and/or methacrylic acid alkyl esters having up to 8 carbon atoms in the alkyl group.

336969

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