Acrylamide-containing emulsion copolymers, their use for thickening and compositions containing them
申请人:ROHM AND HAAS COMPANY
公开号:EP0107403A1
公开(公告)日:1984-05-02
Copolymers of monomer as follows:
(1) at least 10 weight percent of one or more of the following monomers: methacrylic acid, itaconic acid, acrylic acid, acryloxypropionic acid, fumaric acid, maleic acid, citraconic acid and/or crotonic acid;
(2) 0.5 to 25 weight percent of one or more of the monomers of the formula:
wherein R is alkyl, alkylaryl, and/or polycyclic alkyl groups having 8 to 30 carbon atoms;
(3) optionally one or more of the copolymerizable ethylenically unsaturated monomers of the formula:
wherein (a) Y is H and Z is COOR2, C6H4R3, CN, Cl, CONH4,
(b) Y is C,-C4 alkyl and Z is COOR2, C6H4R4, CN, CONH2, or CH=CH; or
(c) Y and Z are C1; and R2 is C1-C8 alkyl or C2-C8 hydroxyalkyl or lower alkoxy (C2-Ca)-alkyl;
R3 is H, Cl, Br, or C1-C4 alkyl; and
R4 is C1-C8 alkyl; and
(4) zero to 1.0 weight percent of one or more polyethylenically unsaturated monomers,
when at least partially neutralised and solubilised by additions of alkali are effective thickeners for aqueous systems. Surfactants enhance the thickening performance of the partially neutralised copolymers. Typical systems to which this thickening can usefully be applied include paint latices, cosmetics, pigment dispersions, oil well drilling fluids, textile printing pastes, dentifrices, hand lotions, liquid detergents and pharmaceuticals.
下列单体的共聚物
(1) 至少 10%的下列一种或多种单体:甲基丙烯酸、衣康酸、丙烯酸、丙烯酰氧基丙酸、富马酸、马来酸、柠檬酸和/或巴豆酸;
(2) 0.5 至 25 重量百分比的一种或多种式中单体:
其中 R 是具有 8 至 30 个碳原子的烷基、烷芳基和/或多环烷基;
(3) 可任选的一种或多种可共聚的乙烯基不饱和单体,其式为
其中 (a) Y 是 H,Z 是 COOR2、C6H4R3、CN、Cl、CONH4、
(b) Y 是 C,-C4 烷基,Z 是 COOR2、C6H4R4、CN、CONH2 或 CH=CH;或
(c) Y 和 Z 均为 C1;R2 为 C1-C8 烷基或 C2-C8 羟基烷基或低级烷氧基 (C2-Ca)-烷基;
R3 是 H、Cl、Br 或 C1-C4 烷基;以及
R4 是 C1-C8 烷基;以及
(4) 零至 1.0 重量百分比的一种或多种聚乙烯不饱和单体、
当至少部分中和并通过加碱增溶时,它们是水性体系的有效增稠剂。表面活性剂可提高部分中和共聚物的增稠性能。可有效增稠的典型体系包括涂料乳液、化妆品、颜料分散体、油井钻井液、纺织印花浆、牙膏、洗手液、液体洗涤剂和药品。