Patent ID: 8877847

Claim:
A paper coating compositions comprising: i) from 30 to 80% by weight of inorganic pigment; and ii) from 0.05 to 3.0 parts by weight each 100 parts by weight of pigment of a polyether having poly(ethylene oxide) content higher than 60% by weight; wherein the polyether is prepared by reacting: a) 1 equivalent of a polyol containing at least one polyoxyethylene chain —(CH 2 CH 2 O)n- in which n is from about 15 to about 500; b) from 0.4 to 1.3 equivalents of a diglycidyl ether of formula (I): in which R 1 is the radical (i): wherein R 2 , R 3 are each independently Me, Et or H; or R 1 is phenylene, optionally substituted with one or more alkyl group; or R 1 is biphenylene, optionally substituted with one or more alkyl group; or R 1 is the radical (ii): or R 1 is a linear or branched aliphatic alkylene radical containing from 2 to 6 carbon atoms; c) from 0 to 1 equivalents of a monofunctional alcohol; and iii) at least 15% by weight of water.