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1. 发明专利

JP2011169611A Method for measuring concentration of chlorine in sulfuric acid solution 有权
标题翻译：测定硫酸在硫酸溶液中浓缩的方法
公开(公告)号：JP2011169611A
公开(公告)日：2011-09-01
申请号：JP2010031078
申请日：2010-02-16
申请人： Sumitomo Chemical Co Ltd , 住友化学株式会社
发明人： KNAPP CARLOS , KUWABARA HIROAKI
IPC分类号： G01N31/00 , G01N21/78
摘要： PROBLEM TO BE SOLVED: To provide a method for measuring the concentration of chlorine in a chlorine-containing sulfuric acid solution with high precision. SOLUTION: In the method for measuring the concentration of chlorine in the chlorine-containing sulfuric acid solution, the maximum absorbance in an absorption band with a wavelength of 450 nm or more and 500 nm or less is measured with respect to a solution, which is obtained by mixing a sulfuric acid solution known in its chlorine concentration with N, N'-bis (2, 4-disulfobenzyl)tolidine and/or an alkali metal salt thereof, and a relational expression of the obtained maximum absorbance and the concentration of chlorine is preliminarily is calculated. Subsequently, the maximum absorbance in the absorption band with the wavelength of 450 nm or more and 500 nm or less is measured with respect to a solution, which is obtained by mixing a sulfuric acid solution containing chlorine to be measured with N, N'-bis (2, 4-disulfobenzyl)tolidine and/or the alkali metal salt thereof and the concentration of chlorine is calculated from the obtained maximum absorbance and the relational expression. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种以高精度测量含氯硫酸溶液中的氯浓度的方法。解决方案：在含氯硫酸溶液中测量氯浓度的方法中，测量波长为450nm以上且500nm以下的吸收带的最大吸光度，相对于溶液，其通过将已知有氯浓度的硫酸溶液与N，N'-双（2,4-二硫代苄基）甲苯胺和/或其碱金属盐混合而得到，并且获得的最大吸光度和预先计算氯的浓度。接着，测定波长为450nm以上且500nm以下的吸收带的最大吸光度，该溶液是将含有测定用氯的硫酸溶液与N，N'- 根据获得的最大吸光度和关系式计算双（2,4-二磺苄基）甲苯胺和/或其碱金属盐，并计算氯的浓度。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2008074737A Method for producing 4-nitrosodiphenylamines 有权
标题翻译：生产4-硝基二苯胺的方法
公开(公告)号：JP2008074737A
公开(公告)日：2008-04-03
申请号：JP2006253960
申请日：2006-09-20
申请人： Sumitomo Chemical Co Ltd , 住友化学株式会社
发明人： MATSUSHITA TSUYOSHI , KUWABARA HIROAKI
IPC分类号： C07C201/00 , C07B61/00 , C07C207/00
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a 4-nitrosodiphenylamine in good operability, with which excellent selectivity is maintained, agglomeration of a 4-nitrosodiphenylamine is controlled and fine particles are obtained in good dispersibility so that adhesion of the agglomerated material to a reactor wall and a stirring shaft is prevented.
SOLUTION: The method for producing a 4-nitrosodiphenylamine comprises reacting a diphenylamine with a nitrosating agent and hydrogen chloride in the presence of a surfactant in a solvent. In the method, a nitrosating agent selected from nitrosyl chloride, a nitrite, an alkyl nitrite and a nitrogen oxide is preferable as the nitrosating agent and a nonionic surfactant or an anionic surfactant is preferable as the surfactant.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供良好的可操作性的4-亚硝基二苯胺的制造方法，其中保持优异的选择性，可以控制4-亚硝基二苯胺的附聚，并且以良好的分散性获得细颗粒，使得聚集的材料到反应器壁和搅拌轴被阻止。解决方案：4-亚硝基二苯胺的制备方法包括在表面活性剂存在下在溶剂中使二苯胺与亚硝化剂和氯化氢反应。在该方法中，作为亚硝化剂，优选选自亚硝酰氯，亚硝酸盐，亚硝酸烷基酯和氮氧化物的亚硝化剂，作为表面活性剂，优选非离子表面活性剂或阴离子表面活性剂。版权所有（C）2008，JPO＆INPIT

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