Polymer compositions

Details Polymer compositions Polymer compositions

C - Chemistry, Metallurgy

11

D

C11D 3/37 (2006.01)

Patent

CA 2191288

1. A liquid composition comprising a water-dispersable or water-soluble sulphonated polyester comprising: (i) an unsulphonated aromatic diacidic monomer (A), (ii) a sulphonated aromatic diacidic monomer (SA), (iii) optionally a hydroxylated aromatic or aliphatic diacidic monomer (HA), in an amount replacing up to 50 mole% of (A) and/or (SA), (iv) a polyol (P) selected from ethylene glycol, propylene glycol, isopropylene glycol, glycerol, 1,2,4-butanetriol and 1,2,3-butanetriol, and aligomers of these having from 1 to 8 monomer units, the polyester having a sulphur content within the range of from 0. 5 to 10 wt%, and a liquid carrier comprising: a) surfactants at a level of 45% by weight of higher; b) a mixture of surfactant and water; or c) water at a level of higher than 5% by weight. A method for the preparation of a liquid composition comprising a liquid carrier and the polyester wherein the polyester is mixed with the liquid carrier.

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