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公开(公告)号:US5336727A
公开(公告)日:1994-08-09
申请号:US729756
申请日:1991-07-15
申请人: Tomoyuki Okazawa , Seiichi Tokumaru , Hideo Ohira , Masao Ishii , Yoshiaki Kano
发明人: Tomoyuki Okazawa , Seiichi Tokumaru , Hideo Ohira , Masao Ishii , Yoshiaki Kano
IPC分类号: C02F5/10 , C04B24/26 , C08F8/12 , C08F210/00 , C08F210/08 , C08F222/06 , C08F236/04
CPC分类号: C02F5/10 , C04B24/2664 , C08F210/00 , C08F222/06 , C08F236/04 , C08F8/12 , C08F210/08 , C08F2800/20 , C08F2810/20
摘要: A maleic anhydride copolymer comprising maleic anhydride units (I), conjugated diene units (II) and aliphatic monoolefin units (III) is provided. This copolymer has a weight-average molecular weight of from 500 to 50000. The molar ratio of unit (I)/(unit (II)+unit (III)) ranges from 30/70 to 90/10 and the molar ratio of unit (II)/unit (III) ranges from 5/95 to 90/10. A hydrolyzed product of the copolymer or a water-soluble maleic acid copolymer is also provided. The hydrolyzed product is advantageously used for scale inhibitors, dispersants for calcium carbonate or admixtures for cement and conctrete.
摘要翻译: 提供包含马来酸酐单元(I),共轭二烯单元(II)和脂族单烯烃单元(III)的马来酸酐共聚物。 该共聚物的重均分子量为500〜50000。单元(I)/(单元(II)+单元(III))的摩尔比为30/70〜90/10,单位摩尔比 (II)/单位(III)的范围为5/95至90/10。 还提供了共聚物或水溶性马来酸共聚物的水解产物。 水解产物有利地用于水垢抑制剂,碳酸钙分散剂或水泥和混凝土的混合物。
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公开(公告)号:US5883290A
公开(公告)日:1999-03-16
申请号:US760436
申请日:1996-12-04
申请人: Takashi Okada , Makoto Hanaya , Akitaka Hattori , Hideyuki Hamaji , Takanori Miyake , Seiichi Tokumaru , Nobuo Nagira , Shunya Ikumi , Takashi Hori , Norimasa Mizui
发明人: Takashi Okada , Makoto Hanaya , Akitaka Hattori , Hideyuki Hamaji , Takanori Miyake , Seiichi Tokumaru , Nobuo Nagira , Shunya Ikumi , Takashi Hori , Norimasa Mizui
IPC分类号: C07C27/02 , C07C29/09 , C07C29/128 , C07C67/00 , C07C67/035 , C07C69/025
CPC分类号: C07C29/095 , C07C29/1285 , C07C67/00 , C07C67/035 , C12C11/02 , Y02P20/582
摘要: The present invention relates to a process for producing benzyl acetate and benzyl alcohol.Benzyl acetate itself is useful as a solvent and a perfume. Benzyl alcohol which is derived from the benzyl acetate by hydrolysis or by transesterification with methanol is an important compound useful as a powerful solvent, a nontoxic medical additive, and an intermediate compound for agricultural chemicals and medicines.
摘要翻译: 本发明涉及一种生产苄基乙酸苄酯和苄醇的方法。 乙酸苄酯本身可用作溶剂和香料。 通过水解或通过甲醇酯交换衍生自乙酸苄酯的苄醇是一种重要的化合物,可用作强有力的溶剂,无毒的医药添加剂和农药和药物的中间体化合物。
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