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
    • 10. 发明授权
    • Hydrochlorofluorocarbons and hydrofluorocarbons and methods for
producing the same
    • 氢氯氟烃和氢氟碳化物及其制备方法
    • US5421971A
    • 1995-06-06
    • US116935
    • 1993-09-03
    • Michael Van Der PuyAlagappan ThenappanG. V. Bindu Madhavan
    • Michael Van Der PuyAlagappan ThenappanG. V. Bindu Madhavan
    • C07C17/10C07C17/23C07C17/269C07C19/10C07B39/00
    • C07C19/10C07C17/10C07C17/23C07C17/269
    • A process for the preparation of compounds of the formula, F(CF.sub.2).sub.a CC1.sub.2 CC1.sub.2 (CF.sub.2).sub.b F where a and b are the same or different and are each an integer .gtoreq.1 (including the novel compound CF.sub.3 CF.sub.2 CC1.sub.2 CC1.sub.2 CF.sub.2 CF.sub.3), which comprises chlorination in the presence of irradiation, of at least one compound of the formula, F(CF.sub.2).sub.n CH.sub.x C1.sub.3-x where n is an integer .gtoreq.1 and x is an integer .ltoreq.3. There is also disclosed a process for utilizing the F(CF.sub.2).sub.a CC1.sub.2 CC1.sub.2 (CF.sub.2).sub.b F compounds to produce F(CF.sub.2).sub.a CH.sub.2 CH.sub.2 (CF.sub.2).sub.b F.sub.3 compounds which comprises contacting hydrogen and the F(CF.sub.2).sub.a CC1.sub.2 CC1.sub.2 (CF.sub.2).sub.b F compounds in the presence of a catalysis which includes at least one Group VIII transition metal. A further aspect of the invention is a novel group of compounds, F(CF.sub.2).sub.a CC1.sub.2 CC1.sub.2 (CF.sub.2).sub.b F, wherein a and b are the same or different and are each an integer from 2 to 10, particularly 3,3,4,4-tetrachloroperfluorohexane (i.e., CF.sub.3 CF.sub.2 CC1.sub.2 CC1.sub.2 CF.sub.2 CF.sub.3), whose corresponding hydrofluorocarbons can be used as cleaning solvents.
    • 其中a和b相同或不同并且各自为整数> / = 1(包括新化合物CF 3 CF 2 CCl 2 CCl 2 CF 2 CF 3)的式(F(CF 2)aCC 12 CCl 2(CF 2)b F)化合物的方法,其包括在 至少一种下式的化合物F(CF 2)n CH x C 13-x其中n是整数> / = 1且x是整数3的照射的存在。 还公开了一种利用F(CF2)aCC12CC12(CF2)bF化合物制备F(CF 2)aCH 2 CH 2(CF 2)bF 3化合物的方法,其包括在存在下使氢和F(CF2)aCC12CC12(CF2)bF化合物接触 的催化剂,其包括至少一种第VIII族过渡金属。 本发明的另一方面是新的一组化合物F(CF2)aCC12CC12(CF2)bF,其中a和b相同或不同,各自为2-10的整数,特别是3,3,4,4 四氯全氟己烷(即CF3CF2CC12CC12CF2CF3),其相应的氢氟烃可用作清洁溶剂。