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1.发明公开WATER-SOLUBLE AZO COMPOUNDS AND PROCESS FOR THE PREPARATION THEREOF 审中-公开水溶性偶氮化合物，AND METHOD FOR THEIR
公开(公告)号：EP0984042A4
公开(公告)日：2005-03-02
申请号：EP98961428
申请日：1998-12-21
发明人： UENO RYUZO , KITAYAMA MASAYA , MINAMI KENJI , KITTAKA MASAHARU
IPC分类号： C09B62/51
CPC分类号： C09B62/51
摘要： Novel water-soluble azo compounds useful as raw materials for preparing dyes excellent in dyeing properties and fastness and prepared from a coupler consisting of 2-hydroxynaphthalene-3,6-dicarboxylic acid or an ester thereof or an amide derivative of the same and a diazonium compound having a group of the general formula:-B-(CH2)2-Q or -B'-(CH2)2-Q' (wherein B and B' are each an electron-attracting group; and Q and Q' are each a group capable of forming a vinyl group through the elimination with an alkali, provided the groups Q and Q' are each bonded at the beta -position of the ethyl group).
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公开(公告)号：EP0937753A4
公开(公告)日：2002-07-31
申请号：EP98938963
申请日：1998-08-25
发明人： UENO RYUZO , KITAYAMA MASAYA , MINAMI KENJI , KITTAKA MASAHARU
IPC分类号： C09B62/008 , C09B62/085 , C09B62/245 , C09B29/15 , C09B29/20
CPC分类号： C09B62/0083 , C09B62/085 , C09B62/245
摘要： New water-soluble azo compounds produced from 2-hydroxynaphthalene-3,6-dicarboxylic acid or derivatives thereof and a diazonium salt having a sulfo group. These compounds are useful as starting material for dyes excellent in dyeing properties and fastness.
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3.发明公开GRANULE OF PARAHYDROXYBENZOIC ACID OR PARAHYDROXYBENZOIC ESTER AND PROCESS FOR PRODUCING THE SAME 有权颗粒或用于生产对羟基苯甲酸PARAHYDROXYBENZOESÄUREESTERN和方法
公开(公告)号：EP1380563A4
公开(公告)日：2006-01-11
申请号：EP02720482
申请日：2002-04-18
摘要： Granules of parahydroxybenzoic acid or a parahydroxybenzoic ester which are extremely inhibited from flying off or caking; and a process for producing the granules. The granules of parahydroxybenzoic acid or an ester thereof have an average particle diameter of 150 mu m or larger and a hardness of 10 to 3,000 g. The process comprises compacting a dry powder of parahydroxybenzoic acid or an ester thereof to form a molding, crushing the molding, and classifying the resultant particles.
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4.发明公开CRYSTAL OF p-HYDROXYBENZOIC ANHYDRIDE AND PROCESS FOR PRODUCING THE SAME 有权KRISTALLE VON P-HYDROXYBENESOUREANHYDRID UND VERFAHREN ZU DEREN HERSTELLUNG
公开(公告)号：EP1614673A4
公开(公告)日：2006-09-27
申请号：EP04726901
申请日：2004-04-12
CPC分类号： C07C51/43 , C07B2200/13 , C07C65/03
摘要： A process for producing crystals of p-hydroxybenzoic anhydride, which comprises the step of crystallizing and separating p-hydroxybenzoic acid at a temperature not lower than the transition temperature of p-hydroxybenzoic acid.
摘要翻译： 一种生产对羟基苯甲酸酐结晶的方法，该方法包括在不低于对羟基苯甲酸转变温度的温度下结晶和分离对羟基苯甲酸的步骤。
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5.发明公开GRANULES OF 2-HYDROXYNAPHTHALENE-3-CARBOXYLIC ACID AND METHOD FOR PREPARING THE SAME 有权2-羟基萘-3-羧酸和颗粒剂的制备方法
公开(公告)号：EP1142861A4
公开(公告)日：2003-07-23
申请号：EP00969880
申请日：2000-10-19
CPC分类号： C07C65/11
摘要： Granules of 2-hydroxynaphthalene-3-carboxylic acid, characterized as having an average particle diameter of 150 mu m or more and a hardness of 70g to 3000g; and a method for preparing said granules, characterized as comprising subjecting a powder of 2-hydroxynaphthalene-3-carboxylic acid to dry compression to give a formed product, crushing the product and classifying the crushed product. The granules of 2-hydroxynaphthalene-3-carboxylic acid is significantly reduced in scattering property.
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