Polyfluoro compounds and method for preparing them
    1.
    发明授权
    Polyfluoro compounds and method for preparing them 失效
    多氟化合物及其制备方法

    公开(公告)号:US4855025A

    公开(公告)日:1989-08-08

    申请号:US111188

    申请日:1987-10-22

    IPC分类号: C07C53/21 C07C233/12

    CPC分类号: C07C53/21

    摘要: This invention relates to compounds which simultaneously contain a perfluorinated chain and a hydrogenated chain and which correspond to the general formula: ##STR1## in which R.sub.F is a perfluoroalkyl radical, m an integer from 0 to 2, R.sub.H an alkyl radical, X an OH or NR.sub.1 R.sub.2 group, and R.sub.1 and R.sub.2 are hydrogen atoms or methyl radicals. The amides (X=NR.sub.1 R.sub.2) are prepared by photoamidation of the polyfluoroolefins R.sub.F --(CH.sub.2).sub.p --CH.dbd.CH--C.sub.n H.sub.2n+1 where p is equal to 0 or 1 and n is an integer from 1 to 17, and the acids (X=OH) are prepared by hydrolysis of the amides thus obtained.The acids and their salts may be employed as surface-active agents or, as also the amides, as intermediates for the synthesis of such agents.

    摘要翻译: 本发明涉及同时含有全氟化链和氢化链的化合物,其对应于以下通式:其中RF是全氟烷基,m为0-2的整数,RH为烷基,X为OH 或NR1R2基团,R1和R2是氢原子或甲基。 酰胺(X = NR1R2)通过聚氟烯烃RF-(CH2)p-CH = CH-CnH2n + 1的光聚酰胺化制备,其中p等于0或1,n是1至17的整数,并且酸( X = OH)通过水解由此获得的酰胺制备。 酸和它们的盐可以用作表面活性剂,也可以作为酰胺用作合成这种试剂的中间体。

    Process for drying difluoromethane
    3.
    发明授权
    Process for drying difluoromethane 有权
    二氟甲烷干燥方法

    公开(公告)号:US07273512B2

    公开(公告)日:2007-09-25

    申请号:US10278587

    申请日:2002-10-23

    申请人: Rene Bertocchio

    发明人: Rene Bertocchio

    IPC分类号: B01D53/02

    CPC分类号: C07C17/38 B01J20/3408

    摘要: Process for drying wet F32, which comprises placing a stream of the said F32 in continuous contact with a feed stock of a composition comprising a molecular sieve chosen from a 3A type sieve, at a temperature of between 5 and 78° C. and at a pressure of between 0.5 and 25 atm.

    摘要翻译: 用于干燥湿F32的方法,其包括将所述F32的物流与包含选自3A型筛分子筛的组合物的原料在5至78℃之间的温度下连续接触, 压力在0.5至25atm之间。

    Purification of chlorotetraflouroethane by extractive distillation
    9.
    发明授权
    Purification of chlorotetraflouroethane by extractive distillation 失效
    通过萃取蒸馏纯化氯四氟乙烷

    公开(公告)号:US5922175A

    公开(公告)日:1999-07-13

    申请号:US16445

    申请日:1998-01-30

    IPC分类号: C07C17/386 B01D3/40

    CPC分类号: C07C17/386

    摘要: A process for the purification of 1-chloro-1,2,2,2-tetrafluoroethane (F124) containing 1,2-dichlorotetrafluoroethane (F114) and/or 1,1-dichlorotetrafluoroethane (F114a). The F124 to be purified is subjected to extractive distillation, the extractant being chosen from C.sub.5 -C.sub.8 aliphatic or cycloaliphatic hydrocarbons and C.sub.4 -C.sub.8 perfluoroalkyl halides.

    摘要翻译: 纯化含有1,2-二氯四氟乙烷(F114)和/或1,1-二氯四氟乙烷(F114a)的1-氯-1,2,2,2-四氟乙烷(F124)的方法。 将要纯化的F124进行萃取蒸馏,萃取剂选自C 5 -C 8脂族或脂环族烃和C 4 -C 8全氟烷基卤化物。

    Chlorofluorinated fluids for absorption machines
    10.
    发明授权
    Chlorofluorinated fluids for absorption machines 失效
    用于吸收机的氯氟化物

    公开(公告)号:US4647391A

    公开(公告)日:1987-03-03

    申请号:US812182

    申请日:1985-12-23

    IPC分类号: C09K5/00 C09K5/04 C09K5/08

    CPC分类号: C09K5/047

    摘要: Working fluid/solvent compositions for use in absorption heating and cooling equipment, which compositions comprise a chlorofluoroethane with a boiling point between -40.degree. and +50.degree. C. and at least one solvent with a boiling point above 100.degree. C., the solvent being at least one material having the formula:C.sub.m Cl.sub.2m+1 --(CF.sub.2 --CFCl).sub.n --Xwherein m is zero or one, n is an integer from one to four, and is at least two when m is zero, and X is hydrogen or chlorine, X being hydrogen only when m is one.

    摘要翻译: 用于吸收加热和冷却设备的工作流体/溶剂组合物,该组合物包含沸点在-40℃和+ 50℃之间的氯氟乙烷和至少一种沸点高于100℃的溶剂,溶剂 是至少一种具有下式的材料:CmCl 2 m + 1-(CF 2 -CFCl)n X其中m为0或1,n为1至4的整数,当m为0时为至少2,X为氢或 氯,仅当m为1时,X为氢。