发明授权
- 专利标题: Pigment dispersants for coating compositions
- 专利标题(中): 用于涂料组合物的颜料分散剂
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申请号: US166643申请日: 1980-07-07
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公开(公告)号: US4303764A公开(公告)日: 1981-12-01
- 发明人: David Z. Becher , Roger M. Christenson , Richard L. Coalson , Percy E. Pierce , Karl F. Schimmel
- 申请人: David Z. Becher , Roger M. Christenson , Richard L. Coalson , Percy E. Pierce , Karl F. Schimmel
- 申请人地址: PA Pittsburgh
- 专利权人: PPG Industries, Inc.
- 当前专利权人: PPG Industries, Inc.
- 当前专利权人地址: PA Pittsburgh
- 主分类号: C08F8/00
- IPC分类号: C08F8/00 ; C09B67/46 ; C09D7/45 ; C08F220/34
摘要:
Pigment dispersants for use in coating compositions wherein the dispersant is the polymerization product of (i) an alkyl methacrylate having from 3 to 8 carbon atoms in the alkyl group, (ii) a hardening monomer selected from the group consisting of a styrene, methyl methacrylate, ethyl methacrylate and mixtures thereof, (iii) an ethylenically unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid and mixtures thereof or a monomer having a double bond alpha-beta to a carbonyl group and which provides carboxyl functionality when reacted with water, alcohol, amine or anhydride, (iv) a monomer having a double bond alpha-beta to a carbonyl group and at least one hydroxyl group or a monomer which provides such groups when further reacted with an acid or an epoxide, and (v) a compound providing an amine or amine salt functional moiety. The dispersants are useful for dispersing pigments in coating compositions containing a wide variety of film-forming resins.
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