Use of a copolymer having surfactant structures as

专利名称：Use of a copolymer having surfactant

structures as dispersing agent and/orgrinding aid

发明人：MONGOIN, JACQUES,EGRAZ, JEAN-BERNARD,SUAU, JEAN-MARC,JACQUEMET,CHRISTIAN

申请号：EP98420119.4申请日：19980710公开号：EP0892020B1公开日：20060712

摘要：Use of a copolymer as a dispersion and/or crushing agent for aqueous

suspension of mineral materials, namely those materials with hydrophilic or hydrophobicproperties; the copolymer comprising: (a) (i) monoacids e.g. (meth)acrylic, (iso)crotonic,and cinnamic; (ii) diacids e.g. fumaric and maleic; (iii) acid anhydrides e.g. maleic anhydride;and (iv) diacid hemiesters such as 1-4C monoesters of maleic acid; (b) optionally at leastone unsaturated monomer with a sulphonic group e.g. sodium methallyl-sulphonate orstyrene sulphonic acid; or a phosphoric group e.g. propylene glycol (meth)acrylatephosphate; (c) optionally at least one unsaturated monomer without a carboxylic groupe.g. (meth)acrylic esters, (meth)acrylonitrile, styrene, (meth)acrylamide; and (d) at leastone unsaturated oxyalkyl monomer with terminal hydrophobic chain of general formula:R-Ä-((CH2-CH(R1)-O)m-CH2-CH2-O)n-CH2-CH(R2)-OpÜ< SB>q-R' (where: m, n, p ≤ 100; qis number such that 0 ≤ q x (n + m + p) ≤ 100; R1, R2 = H, methyl, or ethyl; R =

polymerisable unsaturated radical belonging to group of esters including (meth)acrylic,

crotonic and vinylphthalic, as well as unsaturated urethanes such as (meth)acrylurethane,or allyl-urethane; and R' = hydrophobic radical such as tristyrylphenyl, or 8-30C alkyl,aryl, alkylaryl, arylalkyl; or, when R = urethane, R' = 8C dialkyl, or, preferably, when R =unsaturated polymerisable radical, R' ≥ 22C dialkyl amine; total of (a)+(b)+(c)+(d) = 100pts.; and suspension has specific viscosity ≤ 25.)

申请人：COATEX S.A.S.,COATEX SAS,COATEX S.A.S.

地址：FR

国籍：FR

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