Patent ID: 9228087
Filing Date: 2016-01-05
CPC Classification: A61K,B01F,C01P,C09C,D21H

Claim Text:
1. A method of preparing an aqueous suspension of talc, comprising: granulating talc; and suspending said granulated talc in water, wherein at least one of said granulating and suspending take place in the presence of an anionic hydrosoluble polymer, said anionic hydrosoluble polymer consisting, expressed as a % by weight of each of its monomers, of at least 60% of at least one (meth)acrylic acid monomer and at most 40% of at least one monomer of formula (I): where m and n independently designate integers of less than or equal to 115, at least one of which is non-zero, OE and OP designate respectively ethylene oxide and propylene oxide, R designates a polymerizable group, chosen from acrylate, methacrylate, methacrylurethane, vinyl and allyl groups, and R′ designates hydrogen, and wherein the aqueous suspension of talc prepared comprises more than 55% by dry weight of talc relative to its total weight.