-
公开(公告)号:US3974232A
公开(公告)日:1976-08-10
申请号:US590017
申请日:1975-06-24
CPC分类号: C07C1/24 , C07C2101/16 , C07C2527/18
摘要: Cyclohexanol is dehydrated to cyclohexene by heating it in the presence of a heteropolyacid catalyst. The heteropolyacid is selected from tungstophosphoric acid, tungstosilicic acid, molybdophosphoric acid and molybdosilicic acid. Tungstophosphoric acid can be improved in its catalytic performance by calcination. The dehydration reaction is preferably carried out in liquid phase continuously removing cyclohexene by distillation.
摘要翻译: 环己醇通过在杂多酸催化剂存在下加热而脱水成环己烯。 杂多酸选自钨磷酸,钨硅酸,钼磷酸和钼硅酸。 通过煅烧可以提高其磷酸催化性能。 脱水反应优选在液相中通过蒸馏连续除去环己烯。
-
公开(公告)号:US5480953A
公开(公告)日:1996-01-02
申请号:US244555
申请日:1994-07-27
申请人: Hiroyuki Sugaya , Masahiro Minaga , Ryozo Terada , Toshikazu Tayama , Kazumi Tanaka , Fumiaki Fukui
发明人: Hiroyuki Sugaya , Masahiro Minaga , Ryozo Terada , Toshikazu Tayama , Kazumi Tanaka , Fumiaki Fukui
IPC分类号: B01D67/00 , B01D71/28 , B01D71/40 , C08F283/06 , C08F290/06 , C08F20/26
CPC分类号: B01D67/0088 , B01D71/28 , B01D71/76 , C08F283/06 , C08F290/062 , B01D71/40 , B01D71/52
摘要: Disclosed is a hydrophilic material characterized in that the material comprises a copolymer composed of a monomer (A) having a polyalkylene oxide unit and a polymerizable carbon-carbon double bond in its molecule, a methacrylic ester monomer or an acrylic ester monomer (B) and a monomer (C) having a polymerizable carbon-carbon double bond other than the monomers (A) and (B), and the content of the monomer (C) is not less than 5% by weight and not more than 90% by weight, and a semipermeable membrane made therefrom. The present invention provides a hydrophilic material which can be dissolved in a solvent, can be easily formed and is excellent in antithrombotic and antifouling properties, and further provides an antithrombotic material and a semipermeable membrane. These materials can be appropriately used in the medical field and as water-absorbent and antifouling materials.
摘要翻译: PCT No.PCT / JP93 / 01378。 371日期:1994年7月27日 102(e)日期1994年7月27日PCT提交1993年9月28日PCT公布。 公开号WO94 / 07931 日期:1994年4月14日。公开是亲水性材料,其特征在于,该材料包含由分子中具有聚环氧烷单元的单体(A)和可聚合碳 - 碳双键组成的共聚物,甲基丙烯酸酯单体或 丙烯酸酯单体(B)和除单体(A)和(B)以外具有可聚合碳 - 碳双键的单体(C),单体(C)的含量不小于5重量%,和 不大于90重量%,以及由其制成的半透膜。 本发明提供可以溶解在溶剂中的亲水性材料,可以容易地形成,抗血栓性和防污性优异,并且还提供抗血栓形成材料和半透膜。 这些材料可以适用于医疗领域以及作为吸水剂和防污材料。
-