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    UTILISATION DE COPOLYMERES FAIBLEMENT ANIONIQUES COMME AGENT DISPERSANT ET D'AIDE AU BROYAGE DE SUSPENSION AQUEUSE DE MATIERES MINERALES
    5.
    发明授权
    UTILISATION DE COPOLYMERES FAIBLEMENT ANIONIQUES COMME AGENT DISPERSANT ET D'AIDE AU BROYAGE DE SUSPENSION AQUEUSE DE MATIERES MINERALES 有权
    USE SCHWACHIONISCHER共聚物作为分散和矿物质助磨剂水悬浮液

    公开(公告)号：EP1294476B1

    公开(公告)日：2012-08-15

    申请号：EP01945395.0

    申请日：2001-06-12

    申请人： COATEX S.A.S.

    发明人： SUAU, Jean-Marc ,  JACQUEMET, Christian ,  MONGOIN, Jacques ,  GANE, Patrick

    IPC分类号： B01F17/52 ,  D21H19/58 ,  D21H19/60 ,  C09K8/02 ,  D21H17/43 ,  C08F220/00 ,  C08F222/00 ,  C09C3/04 ,  B01F17/00 ,  C09D7/02

    CPC分类号： B02C23/06 ,  B01F17/0028 ,  B01F17/005 ,  B01F17/0057 ,  B01F17/0064 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/22 ,  C08F220/28 ,  C08F220/34 ,  C08F290/068 ,  C09C1/02 ,  C09C1/021 ,  C09C1/025 ,  C09C1/028 ,  C09C1/3676 ,  C09C1/42 ,  C09C3/10 ,  C09D17/004 ,  C09K8/24 ,  D21H19/58 ,  D21H19/60

    摘要： Water-soluble weakly anionic copolymer comprises ethylenically unsaturated anionic monomers with mono-carboxylic, di-carboxylic, sulfonic, phosphoric or phosphonic groups, non-ionic ethylenically unsaturated monomer, (meth)acrylamide or (meth)acrylate type monomer(s) and doubly ethylenically unsaturated monomers. Water-soluble weakly anionic copolymer, used as dispersing/grinding agent for aqueous suspensions of pigments and/or mineral fillers, comprises: (a) at least one ethylenically unsaturated anionic monomer A with mono-carboxylic group, selected from (meth)acrylic acids or diacid hemi-esters such as 1-4C monoesters of maleic or itaconic acids, or their mixtures; (b) optionally at least one ethylenically unsaturated anionic monomer B with dicarboxylic, sulfonic, phosphoric or phosphonic group, or their mixtures, selected from crotonic, isocrotonic, cinnamic, itaconic, maleic or citraconic acids, or anhydrides such as maleic anhydride, acrylamido-methyl- propane-sulfonic acid, sodium meth-allyl sulfonate, vinyl sulfonic and styrene-sulfonic acids, or vinyl phosphoric acid, ethylene or propylene glycol (meth)acrylate phosphate and their ethoxylates, or from vinyl phosphonic acid, or their mixtures; and (c) at least one non-ionic ethylenically unsaturated monomer of formula (I); (d) optionally a monomer D of type of (meth)acrylamide or their derivatives and mixtures, or one or more water non-soluble monomers D1 such as alkyl (meth)acrylate, vinyl acetate, vinylpyrrolidone, styrene, alpha-methyl styrene and their derivatives; and (e) optionally at least one monomer E with at least two ethylenic unsaturations, selected from ethylene glycol dimethacrylate, trimethylol propane triacrylate, allyl acrylate or maleates, methylene- bis-(meth)acrylamide, tetra-allyloxy ethane, triallyl cyanurates and allylic ethers obtained from polyols such as pentaerythritol, sorbitol, sucrose or others, with components (a), (b), (c), (d) and (e) amounting to total of 100%. The copolymer has specific viscosity up to 10 and especially up to 2. [Image] R1H, methyl or ethyl radical; R2H, methyl or ethyl radical; R : polymerizable unsaturated radical, selected from (meth)acrylic, maleic, itaconic, crotonic and vinylphthalic esters, unsaturated urethanes such as (meth)acryl urethane, alpha-alpha dimethyl- isopropenyl-benzyl urethane and allyl urethane, allyl or vinyl esters or ethylenically unsaturated amides; R' : 1-5C hydrocarbon radical; m and p : number of alkylene oxide groups up to 150; n : number of ethylene oxide groups up to 150; q : at least 1, with (m+n+p)q equal 5-150 Independent claims are also included for: (1) dispersing and/or grinding agent for pigments and/or mineral fillers in aqueous suspensions, consisting of copolymer as claimed, of composition as described below; (2) aqueous suspension of fillers and/or pigments, containing 0.05-5 wt.% (preferably 0.3-1.0 wt.%) of dispersing agent as claimed; (3) use of aqueous suspension of fillers and/or pigments in making and/or layering of paper; (4) paper sheets containing aqueous suspension of fillers and/or pigments as claimed; (5) use of aqueous suspension of fillers and/or pigments as claimed in drilling muds for oil prospecting or extraction, especially saturated saline muds and marine muds; (6) drilling mud containing aqueous suspension of fillers and/or pigments as claimed; (7) use of dispersing and/or grinding agent for pigments and/or mineral fillers in aqueous suspensions as claimed employed in paint industry; and (8) use of dispersing and/or grinding agent for pigments and/or mineral fillers in aqueous suspensions as claimed employed in field of plastic materials, especially thermoplastic or thermosetting resins.