Method for producing dichloropentafluoropropanes
    3.
    发明授权
    Method for producing dichloropentafluoropropanes 失效
    二氯五氟丙烷的制备方法

    公开(公告)号:US06191327B1

    公开(公告)日:2001-02-20

    申请号:US08157429

    申请日:1993-11-26

    IPC分类号: C07C2118

    摘要: The present invention relates to a simple method for producing 3,3-dichloro-1,1,1,2,2-pentafluoropropane (R225ca) and 1,3-dichloro-1,1,2,2,3-pentafluoropropane (R225cb) in good yield and at high selectivity by reacting tetrafluoroethylene (C2F4) and dichlorofluoromethane (R21) in the presence of a certain specific catalyst. The specific catalyst in the present invention is (1) a catalyst comprising halogenated oxide containing at least one element of Group 4, Group 5 and Group 13 such as Ti, Zr, Hf, V, B and Ga, or (2) a catalyst comprising halogenated oxide containing at least one element selected from Group 4, Group 5 and Group 13 such as Ti, Zr, Hf, V, B, Al and Ga and at least one element selected from Group 2, Group 6, Group 12 and Group 14 such as Ba, W, Zn, Si, Bi and P.

    摘要翻译: 本发明涉及制备3,3-二氯-1,1,1,2,2-五氟丙烷(R225ca)和1,3-二氯-1,1,2,2,3-五氟丙烷(R225cb)的简单方法 ),在一定的特定催化剂存在下,通过四氟乙烯(C 2 F 4)和二氯氟甲烷(R 21)的反应以高选择性。本发明中的具体催化剂是(1)包含含有至少一种元素 第4族,第5族和第13族如Ti,Zr,Hf,V,B和Ga,或(2)包含选自第4族,第5族和第13族中的至少一种元素的卤代氧化物的催化剂, Zr,Hf,V,B,Al和Ga以及选自组2,组6,组12和组14中的至少一种元素如Ba,W,Zn,Si,Bi和P.

    Process for producing 1,1,1,2-tetrafluoroethane
    6.
    发明授权
    Process for producing 1,1,1,2-tetrafluoroethane 失效
    生产1,1,1,2-四氟乙烷的方法

    公开(公告)号:US5426253A

    公开(公告)日:1995-06-20

    申请号:US308612

    申请日:1994-09-19

    IPC分类号: C07C17/23 C07C19/08

    CPC分类号: C07C17/23

    摘要: A process for producing 1,1,1,2-tetrafluoroethane, which comprises reacting 2,2-dichloro-1,1,1,2-tetrafluoroethane, 2-chloro-1,1,1,2-tetrafluoroethane or a mixture thereof with hydrogen in the presence of a hydrogenation catalyst consisting essentially of a Group VIII element as the main component and at least one element selected from the group consisting of Group IB elements, lanthanum and lanthanide elements, as an additional component.

    摘要翻译: 一种生产1,1,1,2-四氟乙烷的方法,其包括使2,2-二氯-1,1,1,2-四氟乙烷,2-氯-1,1,1,2-四氟乙烷或其混合物 在基本上由VIII族元素作为主要成分组成的氢化催化剂和选自由IB族元素,镧和镧系元素组成的组中的至少一种元素作为附加成分的氢气存在下进行。

    Method for producing a polyfluoropropionyl halide
    7.
    发明授权
    Method for producing a polyfluoropropionyl halide 失效
    多氟丙酰卤的制造方法

    公开(公告)号:US5663543A

    公开(公告)日:1997-09-02

    申请号:US424391

    申请日:1995-05-01

    IPC分类号: C07C51/58 C07B39/00

    CPC分类号: C07C51/58

    摘要: A method for producing a polyfluoropropionyl halide, which is characterized by oxidizing at least one dichloropentafluoropropane selected from 3,3-dichloro-1,1,1,2,2-pentafluoropropane and 1,3-dichloro-1,1,2,2,3-pentafluoropropane by oxygen under irradiation with light and in the presence of chlorine.The polyfluoropropionyl halide can be obtained from the dichloropentafluoropropane industrially advantageously in good yield. Further, in a gas phase reaction, the polyfluoropropionyl halide can be obtained in a very high reaction yield without decomposition of the desired product and without corrosion of the material for the reactor or the glass for the light source portion even in a reaction for a long period of time.

    摘要翻译: PCT No.PCT / JP94 / 01434 Sec。 371日期:1995年5月1日 102(e)日期1995年5月1日PCT 1994年8月31日PCT PCT。 公开号WO95 / 06629 日期:1995年3月9日制备多氟丙酰卤的方法,其特征在于氧化至少一种选自3,3-二氯-1,1,1,2,2-五氟丙烷和1,3-二氯-1,2-二氯-1-五氟丙烷的二氯五氟丙烷, 在光照和氯存在下,用氧气将1,2,2,3-五氟丙烷除去。 多氟丙酰卤可以在工业上有利地以良好的收率由二氯五氟丙烷获得。 此外,在气相反应中,即使在长时间的反应中,也可以以非常高的反应收率获得多氟丙酰卤,而不会分解所需产物,并且即使在长时间的反应中也不会使用于反应器的材料或光源部分的玻璃 一段的时间。

    Method for producing a hydrogen-containing chloromethane
    9.
    发明授权
    Method for producing a hydrogen-containing chloromethane 失效
    含氢氯甲烷的制造方法

    公开(公告)号:US5334782A

    公开(公告)日:1994-08-02

    申请号:US960423

    申请日:1992-12-23

    摘要: The present invention relates to a method for producing a hydrogen-containing chloromethane such as chloroform at high selectivity in good yield by reducing a polychloromethane such as carbon tetrachloride in the presence of a reduction catalyst.In the present invention, it is important to conduct the reduction reaction in a liquid phase, whereby formation of impurities such as polymers which deactivate the catalyst, can effectively be suppressed, and the high selectivity and high activity of the reduction catalyst can adequately be obtained.As the reduction catalyst, at least one member selected from elements of Groups 8, 9 and 10, such as ruthenium, rhodium, palladium and platinum, may suitably be employed. Also a catalyst comprising, as the main component, such an element and having at least one member of Group 11 elements such as copper, silver and gold added thereto, may also suitably be employed.In a case where the liquid phase reduction reaction is conducted continuously, it is preferred to adopt a fixed bed system, particularly a trickle bed system.The method of the present invention is valuable also as a method for converting carbon tetrachloride which is regulated from the standpoint of global environmental protection, to chloroform which is useful as raw material for various fluorine-containing compounds.

    摘要翻译: PCT No.PCT / JP92 / 00522 Sec。 371日期1992年12月23日 102(e)日期1992年12月23日PCT 1991年4月23日提交PCT公布。 第WO92 / 18447号公报 本发明涉及通过在还原催化剂的存在下还原多氯甲烷如四氯化碳,以高选择性以高产率生产含氢氯甲烷如氯仿的方法。 在本发明中,重要的是在液相中进行还原反应,从而可以有效地抑制催化剂失活的诸如聚合物等杂质的形成,能够充分获得还原催化剂的高选择性和高活性 。 作为还原催化剂,可以适当选择选自元素8,9和10中的至少一种,例如钌,铑,钯和铂。 还可以适当地使用包含作为主要成分的这种元素并且具有添加到其中的至少一种第11族元素​​如铜,银和金的元素的催化剂。 在连续进行液相还原反应的情况下,优选采用固定床系统,特别是滴流床系统。 本发明的方法作为从全球环境保护的角度将四氯化碳转化为可用作各种含氟化合物的原料的氯仿的方法也是有价值的。