发明名称 |
Prodn. of co-condensate for use as dispersant e.g. for pigment |
摘要 |
Cocondensates (I) of ketones of formulae (II) and (III), HCHO and a sulphite salt (IV) are claimed: R1-CO-R2 (II), R3-CO-R4 (III); R1, R2 and R3 independently = (substd.) aliphatic gps. pref. (substd.) 1-4C alkyl, opt. with hetero-atoms or gps., e.g. -O-, or -NH-, in the chain; or CR1R2 = a (substd.) cycloaliphatic gp., pref. a 3-7 membered (substd.) satd. carbocycle; R4 = a (substd.) aromatic gp., pref. (substd.) phenyl.
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申请公布号 |
DE4007484(A1) |
申请公布日期 |
1991.09.12 |
申请号 |
DE19904007484 |
申请日期 |
1990.03.09 |
申请人 |
BAYER AG, 5090 LEVERKUSEN, DE |
发明人 |
MAURER, WERNER, DR.;BOEHMKE, GUENTHER, DR.;SCHMITZ, GERD, 5090 LEVERKUSEN, DE |
分类号 |
B01F17/52;C08G6/02;D06P1/56 |
主分类号 |
B01F17/52 |
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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