发明名称 |
PREPARATION OF POLYMERS OF ACRYLIC ACID OR METHACRYLIC ACID |
摘要 |
Polymers of acrylic acid or methacrylic acid are prepared by polymerizing acrylic acid and/or methacrylic acid at 50-180.degree.C in a C2-C6-alcohol or mixtures thereof with water having a C2-C?6?-alcohol content of not less than 40% by weight in the presence of free radical polymerization initiators and from 0.01 to 5% by weight, based on the monomers used, of inorganic acids of phosphorus in which the phosphorus has an oxidation number of from 1 to 4, or of water-soluble salts thereof, water-soluble -PO(OH)2-containing compounds and/or watersoluble salts thereof. The polymers thus prepared are effective milling aids and dispersants for pigments for producing aqueous pigment slurries for use in paper-coating compositions. |
申请公布号 |
CA1277094(C) |
申请公布日期 |
1990.11.27 |
申请号 |
CA19870528171 |
申请日期 |
1987.01.26 |
申请人 |
DENZINGER, WALTER |
发明人 |
DENZINGER, WALTER;HARTMANN, HEINRICH;HIRSCH, GUENTER;BECKER, HANS-WERNER;ROHMANN, MICHAEL |
分类号 |
C08F2/16;B29C31/06;B29C45/18;C08F2/10;C08F20/00;C08F20/06;C09C1/02;C09C3/04;C09C3/10;C09D17/00;D21H19/40;D21H19/58 |
主分类号 |
C08F2/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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