申请人:——
公开号:US20020078860A1
公开(公告)日:2002-06-27
This invention relates to a process for preparing quinacridone pigment compositions by
(a) heating a reaction mixture containing
(i) 2,5-dianilinoterephthalic acid or 2,5-dianilino-6,13-dihydroterephthalic acid or a derivative thereof,
(ii) about 0.1 to about 5 percent, based on component (a)(i), of 2,5-di(sulfamoylanilino)terephthalic acid and/or 2,5-di(sulfamoylanilino)-6,13-dihydroterephthalic acid or a derivative thereof,
(iii) about 0.1 to about 15 percent by weight, based on component (a)(i), of other sulfonyl-containing derivatives of 2,5-dianilinoterephthalic acid and/or 2,5-dianilino-6, 13-dihydroterephthalic acid,
(iv) about 3 to about 20 parts by weight, per part of component (a)(i), of a dehydrating agent, and
(v) optionally, a solvent;
(b) drowning the reaction mixture from step (a) with a liquid in which the quinacridone pigment composition is substantially insoluble; and
(c) isolating the quinacridone pigment composition.
这项发明涉及一种通过以下步骤制备喹诺酮颜料组合物的方法:(a)加热反应混合物,其中包含(i) 2,5-二苯胺基对苯二甲酸或2,5-二苯胺基-6,13-二氢基对苯二甲酸或其衍生物,(ii)相对于组分(a)(i)约0.1至约5%的2,5-二(磺酰氨基苯胺基)对苯二甲酸和/或2,5-二(磺酰氨基苯胺基)-6,13-二氢基对苯二甲酸或其衍生物,(iii)相对于组分(a)(i)约0.1至约15%重量的其他含磺酰基的2,5-二苯胺基对苯二甲酸和/或2,5-二苯胺基-6,13-二氢基对苯二甲酸的衍生物,(iv)相对于组分(a)(i)每部分约3至约20部重量的脱水剂,和(v)可选地,溶剂;(b)用一种喹诺酮颜料组合物在其中基本不溶的液体淹没步骤(a)中的反应混合物;和(c)分离出喹诺酮颜料组合物。