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    • 22. 发明申请
    • AMINE-MODIFIED POLYESTER PIGMENT DISPERSING AGENTS
    • 氨基改性聚酯颜料分散剂
    • WO1993002131A1
    • 1993-02-04
    • PCT/US1992005353
    • 1992-06-26
    • PPG INDUSTRIES, INC.
    • PPG INDUSTRIES, INC.LAMERS, Paul, H.O'Dwyer, James, B.McCOLLUM, Gregory, J.KANIA, Charles, M.SIMON, Martin, J.
    • C08K05/10
    • C09B67/0088B01F17/005C09D7/45C09D17/001
    • Pigment dispersing agents are disclosed which comprise the reaction product of a polyester having both hydroxyl and carboxylic acid groups with 0.02 to 0.4 millimoles of total amine per gram of polyester, said amine being of formula (I) wherein Ra is alkylene containing from 2 to 6 carbon atoms and Rb is hydroxy-substituted alkyl in which the alkyl group contains from 2 to 12 carbon atoms; the percentage by weight being based on total weight of polyester and amine. The pigment dispersing agent has excellent pigment dispersing properties, provides increased color strength and improves the flow and leveling of the pigmented coating. The dispersing agent is particularly useful in pigmented, acid catalyzable coating compositions comprising as the principal film-forming resin an active hydrogen group-containing material and an aminoplast curing agent. The pigment dispersing agents, although containing amine groups, do not adversely affect the cure of such film-forming compositions as can other amine group-containing dispersing agents, and because of the presence of hydroxyl groups, the pigment dispersing agents readily react into the cured film.
    • 公开了颜料分散剂,其包含具有羟基和羧酸基团的聚酯与每克聚酯为0.02至0.4毫摩尔总胺的反应产物,所述胺为式(I),其中R a为含有2-6个 碳原子,R b是其中烷基含有2至12个碳原子的羟基取代的烷基; 重量百分比是基于聚酯和胺的总重量。 颜料分散剂具有优异的颜料分散性能,提供增加的着色强度并改善着色涂料的流动和流平。 分散剂特别可用于着色的酸可催化涂料组合物,其包含作为主要成膜树脂的含活性氢基团的材料和氨基塑料固化剂。 颜料分散剂虽然含有胺基,但是对其它含胺基分散剂的成膜组合物的固化没有不利影响,并且由于存在羟基,所以颜料分散剂容易地反应成固化的 电影。