公开(公告)号：US06399833B1

公开(公告)日：2002-06-04

申请号：US09601235

申请日：2000-07-31

申请人： Akio Kurihara ,  Isao Kurimoto ,  Naoyuki Takano

发明人： Akio Kurihara ,  Isao Kurimoto ,  Naoyuki Takano

IPC分类号： C07C31506

CPC分类号： C07C317/36 ,  C07C315/06 ,  C07C317/14 ,  C07C317/22

摘要： A process for producing a purified aryl vinyl sulfone solution, characterized in that an aryl vinyl sulfone is crystallized from an organic solvent solution of a crude aryl vinyl sulfone to give a crystallization mixture, and a wet cake of the aryl vinyl sulfone obtained by the separation of the solution from the said mixture is dissolved in a solution-forming solvent selected from ethers of 4 to 8 carbon atoms, aromatic hydrocarbons of 6 to 10 carbon atoms, halogenated hydrocarbons of 1 to 6 carbon atoms, ketones of 3 to 8 carbon atoms, esters of 3 to 6 carbon atoms, and nitrites of 2 to 6 carbon atoms.

摘要翻译： 一种纯化的芳基乙烯基砜溶液的制备方法，其特征在于芳基乙烯基砜从粗芳基乙烯基砜的有机溶剂溶液中结晶，得到结晶混合物，通过分离获得的芳基乙烯基砜的湿滤饼 溶解在选自4至8个碳原子的醚，6至10个碳原子的芳族烃，1至6个碳原子的卤代烃，3至8个碳原子的酮的溶液形成溶剂中 3至6个碳原子的酯和2至6个碳原子的亚硝酸根。

公开(公告)号：US06831201B2

公开(公告)日：2004-12-14

申请号：US10239483

申请日：2002-09-20

申请人： Kiyoshi Katsuura ,  Tomoya Hidaka ,  Yutaka Takashina ,  Yasuo Ohnuki

发明人： Kiyoshi Katsuura ,  Tomoya Hidaka ,  Yutaka Takashina ,  Yasuo Ohnuki

IPC分类号： C07C31506

CPC分类号： C07C315/04 ,  C07C315/06 ,  C07C317/22

摘要： The present invention is to provide methods for producing highly pure 4,4′-dihydroxydiphenyl sulfone monoethers advantageously in industrial production. In a process for producing a compound represented by Formula (1) (wherein, R1 and R2 are each independently halogen, alkyl having 1 to 8 carbons or alkenyl having 2 to 8 carbons; m and n are each independently 0 or an integer of 1 to 4; and R3 is alkyl having 1 to 8 carbons, alkenyl having 2 to 8 carbons, cycloalkyl having 3 to 8 carbons or optionally substituted aralkyl), (1) a pH adjustment is carried out twice or more in the purification process, (2) an excessive amount of alkyl halide used is removed, (3) a solvent, such as water, containing 0.05 ppm or less of iron components is used, (4) tanks with corrosion-resistant layers over the inner walls are used, (6) a chelating agent is added, and (7) a means of drying with mechanical stir is applied.

摘要翻译： 本发明提供了在工业生产中有利地生产高纯度4,4'-二羟基二苯基砜单醚的方法。在制备由式（1）表示的化合物（其中R 1和R 2为 各自独立地为卤素，具有1至8个碳的烷基或具有2至8个碳的烯基; m和n各自独立地为0或1至4的整数;并且R 3为具有1至8个碳的烷基，具有2至 8个碳原子数为3〜8的环烷基或任意取代的芳烷基），（1）在纯化工序中进行两次以上的pH调节，（2）除去过量的烷基卤，（3）溶剂 使用含有0.05ppm以下的铁成分的水，（4）使用内壁具有耐腐蚀层的罐，（6）添加螯合剂，（7）使用 应用机械搅拌。

公开(公告)号：US06235198B1

公开(公告)日：2001-05-22

申请号：US09078414

申请日：1998-05-14

申请人： Annie Commarieu ,  Francis Humblot

发明人： Annie Commarieu ,  Francis Humblot

IPC分类号： C07C31506

CPC分类号： C07C315/06 ,  C07C317/04

摘要： To purify a dimethyl sulphoxide (DMSO), it is placed in contact with a plurality of cation exchange resins at least one of which is a resin of sulphonic type in —SO3H or —SO3NH4 form, it being possible for the other or others to be of chelating type. The DMSO thus obtained has an iron cation content lower than 1 ppb and a sodium cation content lower than 2 ppb.

摘要翻译： 为了纯化二甲基亚砜（DMSO），将其与多个阳离子交换树脂接触，其中至少一种是-SO 3 H或-SO 3 NH 4形式的磺酸树脂，其他或其它可能是 的螯合型。 由此获得的DMSO具有低于1ppb的铁阳离子含量和低于2ppb的钠阳离子含量。