会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明专利
    • SEPARATION MEMBRANE FOR LIQUID MIXTURE
    • JPS6223402A
    • 1987-01-31
    • JP16259185
    • 1985-07-23
    • SAGAMI CHEM RESTOYO SODA MFG CO LTD
    • MATSUI KIYOHIDENAGASE YUTAKAUEDA TOMOKOUCHIKURA MASAKI
    • B01D71/52B01D71/70B01D71/78
    • PURPOSE:To obtain a polymer membrane excellent in the permeability and separation capacity of a liquid mixture and having mechanical strength, by using a graft copolymer having polyphenylene oxide as a main chain and polyorganosiloxane as a side chain. CONSTITUTION:Phenylene oxide comprising a repeating unit represented by formula (wherein A is a halogen atom, a methyl group and an akoxy group) is reacted with a strong base and subsequently reacted with single terminal reactive polyorganosiloxane represented by formula II (wherein X is a halogen atom, Y is an oxygen atom or a divalent org. group, Z is an organosiloxane chain, R -R may be same or different and are an alkyl group, a substituted alkyl group, a phenyl group or a substituted phenyl group). As the strong base, an organolithium compound is pref. and used in an amount of 0.01-4 equivalent to the polyphenylene oxide repeating unit. If diamine is allowed to be present at this time, reaction advances smoothly. Polyorganosiloxane represented by formula II is used in an amount of 0.5-3 equivalent to the strong base. The polyphenylene oxide unit and the polyorganosiloxane unit are set to a range of 80/20-10/90 on the basis of mol ratio.