Epoxides and their preparation
    8.
    发明授权
    Epoxides and their preparation 失效
    环氧化物及其制备

    公开(公告)号:US5214167A

    公开(公告)日:1993-05-25

    申请号:US836567

    申请日:1992-02-18

    IPC分类号: C07D303/48 C07D317/62

    CPC分类号: C07D317/62 C07D303/48

    摘要: Process comprising heating a dioxole at 100.degree.-400.degree. C. for a sufficient time to convert the dioxole to an epoxide, for example, bis-2,2-trifluoromethyl-4,5-difluoro-1,3-dioxole to 2,3-epoxy-3-trifluoromethyl-4-trifluorobutyryl fluoride.

    摘要翻译: 方法包括在100-400℃下加热二氧杂环己烯足够的时间以将二氧杂环戊烯转化为环氧化物,例如双-2,2-三氟甲基-4,5-二氟-1,3-二氧杂环戊烷, 3-环氧-3-三氟甲基-4-三氟丁酰氟。

    Epoxides and their preparation
    9.
    发明授权
    Epoxides and their preparation 失效
    环氧化物及其制备

    公开(公告)号:US5011954A

    公开(公告)日:1991-04-30

    申请号:US401668

    申请日:1989-08-30

    IPC分类号: C07D303/48 C07D317/62

    CPC分类号: C07D317/62 C07D303/48

    摘要: Process comprising heating a dioxole at 100.degree.-400.degree. C. for a sufficient time to convert the dioxole to an epoxide, for example, bis-2,2-trifluoromethyl-4,5-difluoro-1,3-dioxole to 2,3-epoxy-3-trifluoromethyl-4-trifluorobutyryl fluoride.

    摘要翻译: 方法包括在100-400℃下加热二氧杂环己烯足够的时间以将二氧杂环戊烯转化为环氧化物,例如双-2,2-三氟甲基-4,5-二氟-1,3-二氧杂环戊烷, 3-环氧-3-三氟甲基-4-三氟丁酰氟。

    Crosslinked fluoropolymer networks
    10.
    发明授权
    Crosslinked fluoropolymer networks 失效
    交联氟聚合物网络

    公开(公告)号:US08394870B2

    公开(公告)日:2013-03-12

    申请号:US12504320

    申请日:2009-07-16

    IPC分类号: C08F16/24

    摘要: Disclosed herein is a crosslinked fluoropolymer network formed by the free radical initiated crosslinking of a diacrylate fluoropolymer The diacrylate copolymer is of formula CH2═CR′COO—(CH2)n—R—(CH2)n—OOCR′═CH2, wherein R is selected from the group consisting of i) an oligomer comprising copolymerized units of vinylidene fluoride and perfluoro(methyl vinyl ether), ii) an oligomer comprising copolymerized units of vinylidene fluoride and hexafluoropropylene, iii) an oligomer comprising copolymerized units of tetrafluoroethylene and perfluoro(methyl vinyl ether), and iv) an oligomer comprising copolymerized units of tetrafluoroethylene and a hydrocarbon olefin, R′ is H or —CH3, n is 1-4 and wherein said oligomer has a number average molecular weight of 1000 to 25,000 daltons. The source of the free radicals may be a photoinitiator or an organic peroxide.

    摘要翻译: 本文公开了通过二丙烯酸酯含氟聚合物的自由基引发交联形成的交联的氟聚合物网络。二丙烯酸酯共聚物具有式CH 2 = CR'COO-(CH 2)n -R-(CH 2)n -OOCR' = CH 2,其中R为 选自i)包含偏二氟乙烯和全氟(甲基乙烯基醚)的共聚单元的低聚物,ii)包含偏二氟乙烯和六氟丙烯的共聚单元的低聚物,iii)包含四氟乙烯和全氟(甲基)丙烯的共聚单元的低聚物 乙烯基醚),和iv)包含四氟乙烯和烃烯烃的共聚单元的低聚物,R'是H或-CH 3,n是1-4,并且其中所述低聚物的数均分子量为1000-25,000道尔顿。 自由基的来源可以是光引发剂或有机过氧化物。