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公开(公告)号:US06372910B1
公开(公告)日:2002-04-16
申请号:US09514609
申请日:2000-02-28
IPC分类号: C07D22106
CPC分类号: C07D221/14
摘要: A process for preparing 1,8-naphthalimide by reacting 1,8-naphthalic anhydride with ammonia in an aqueous solution under atmospheric pressure at 60 to 100° C.
摘要翻译: 在大气压下,在60〜100℃下,使1,8-萘二甲酸酐与氨在水溶液中反应制备1,8-萘二甲酰亚胺的方法。
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公开(公告)号:US06476222B2
公开(公告)日:2002-11-05
申请号:US09755494
申请日:2001-01-05
申请人: Norman W. Smith , Terrence R. Chamberlain , Barbara N. Berg , George McLaren , Russell J. Schwartz
发明人: Norman W. Smith , Terrence R. Chamberlain , Barbara N. Berg , George McLaren , Russell J. Schwartz
IPC分类号: C07D26528
CPC分类号: C09B67/0034 , C09B19/02 , C09B67/0022
摘要: A process for improving the heat stability of Pigment Violet 23 by conditioning crude Pigment Violet 23 in the presence of about 1 to 10 wt. % of Pigment Violet 23 by-products (1), (2) and (3).
摘要翻译: 在约1〜10重量%存在下,通过调色粗颜料紫23来提高颜料紫23的热稳定性的方法。 %的颜料紫23副产物(1),(2)和(3)。
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公开(公告)号:US06494949B2
公开(公告)日:2002-12-17
申请号:US09755451
申请日:2001-01-05
IPC分类号: C09B4800
CPC分类号: C09B67/0027 , C09B48/00 , C09B67/0036
摘要: A process for producing beta-phase quinacridone by (a) reacting 2,5-dianilino-terephthalic acid with polyphosphoric acid in the presence of 2,5-dianisidino-terephthalic acid at a reaction temperature of at least 85° C.; (b) diluting the reaction mixture with water; (c) drowning the diluted mixture in a water-miscible alkanol; (d) heating the slurry at a temperature of from 100 to 130° C. at a pressure of 20 to 50 psi; and (e) recovering the beta-phase quinacridone.
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公开(公告)号:US06388093B1
公开(公告)日:2002-05-14
申请号:US09755566
申请日:2001-01-05
IPC分类号: C07D48706
CPC分类号: C07D487/04 , C09B57/004
摘要: A synthesis for preparing asymmetrical 1,4-diketopyrrolo[3,4-c]pyrroles involving: (a) reacting a &bgr;-ketoamide with a strong base; (b) halogenating the same or a different &bgr;-ketoamide; (c) reacting the reaction products of step (a) and (b) to form a succinamide; and (d) heating the succinamide in the presence of a Lewis Acid. Symmetrical 1,4-diketopyrrolo [3,4-c]pyrroles are synthesized by oxidatively dimerizing the reaction product of step (b) to form a succinamide; and heating the succinamide in the presence of a Lewis Acid.
摘要翻译: 制备不对称1,4-二酮吡咯并[3,4-c]吡咯的合成方法,其涉及:(a)使β-酮酰胺与强碱反应; (b)卤化相同或不同的β-酮酰胺; (c)使步骤(a)和(b)的反应产物反应形成琥珀酰胺; 和(d)在路易斯酸存在下加热琥珀酰胺。 通过将步骤(b)的反应产物氧化二聚形成琥珀酰胺合成对称的1,4-二酮吡咯并[3,4-c]吡咯; 并在路易斯酸存在下加热琥珀酰胺。
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