发明名称 |
PROCESS FOR PRODUCTION OF AN AZOMETHINE PIGMENT |
摘要 |
<p>A process for the production of a compound of the formula: in pigmentary form having a mean particle size not exceeding 0.3 microns, comprising:a) reacting .beta.-naphthol with chloroform in an alkaline medium, using a sufficiently slow rate of addition of chloroform that the reaction mixture, after initially assuming a deep blue colour and then turning green, maintains this green colouration until the addition of chloroform has been completed;b) reacting the alkali metal salt of 2-hydroxy-1-naphthal-dehyde from step a) with 2-aminophenol to produce a ligand of formula: IIc) metallising the ligand of formula II with an aqueous solution of a coppering agent, and isolating the complex metal pigment of formula I. - 1a</p> |
申请公布号 |
CA1103690(A) |
申请公布日期 |
1981.06.23 |
申请号 |
CA19770283967 |
申请日期 |
1977.08.03 |
申请人 |
CIBA-GEIGY AG |
发明人 |
MCCRAE, JAMES M.;IRVINE, ALEXANDER M.;MACPHERSON, IAN A. |
分类号 |
C09B55/00;(IPC1-7):09B55/00 |
主分类号 |
C09B55/00 |
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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