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2. 发明公开

EP0805189A2 Incorporation of pigment derivatives during quinacridone preparation processes 失效
标题翻译： E on on on on ren ren ren ren ren ren ren ren ren ren ren ren ren ren
公开(公告)号：EP0805189A2
公开(公告)日：1997-11-05
申请号：EP97106253.4
申请日：1997-04-16
申请人： Bayer Corporation
发明人： Badejo, Ibraheem T. , Campos, Margot , Greene, Michael, J. , Rice, Daphne, J.
IPC分类号： C09B67/22 , C09B48/00
CPC分类号： C09B48/00 , C09B67/0036
摘要： This invention relates to a process for the preparation of quinacridone pigments by

(a) heating, at a temperature of about 80°C to about 145°C, a reaction mixture containing

(i) 2,5-dianilinoterephthalic acid, a 2,5-dianilino-6,13-dihydroterephthalic acid ester, and/or a derivative thereof,
(ii) about 3 to about 15 parts by weight, per part of component (a)(i), of a dehydrating agent, and
(iii) about 0.1 to about 15 percent by weight, based on component (a)(i), of one or more non-quinacridone pigments,
with the proviso that if component (a)(i) is a 2,5-dianilino-6,13-dihydroterephthalic acid ester or a derivative thereof, reaction step (a) additionally comprises an oxidation step;

(b) drowning the reaction mixture from step (a) by adding said reaction mixture to about 3 to about 15 parts by weight, per part of component (a)(i), of a liquid in which the quinacridone pigment is substantially insoluble;
(c) isolating the quinacridone pigment;
(d) optionally, conditioning the quinacridone pigment; and
(e) optionally, blending the resultant pigment with one or more quinacridone derivatives.
摘要翻译：本发明涉及通过以下步骤制备喹吖啶酮颜料的方法：（a）在约80℃至约145℃的温度下加热反应混合物，该反应混合物含有（i）2,5-二苯胺基对苯二甲酸，2.5 （ii）脱水剂组分（a）（ⅰ）中约3至约15重量份，和（iii）组分（a）基于组分（a）（i）约0.1至约15重量％的一种或多种非喹吖啶酮颜料，条件是如果组分（a）（i）为2,5-二苯胺基-6， 13-二氢对苯二甲酸酯或其衍生物，反应步骤（a）还包括氧化步骤; （b）通过将所述反应混合物加入到每份组分（a）（i）中的约3至约15重量份的喹吖啶酮颜料基本上不溶的液体中来淹没反应混合物; （c）分离喹吖啶酮颜料; （d）任选调节喹吖啶酮颜料; 和（e）任选地，将所得颜料与一种或多种喹吖啶酮衍生物共混。

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