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11 条记录 (耗时 0.049 秒)

    Purification of 1,1,1,3,3-pentafluoropropane (R-245fa)
    5.
    发明授权
    Purification of 1,1,1,3,3-pentafluoropropane (R-245fa) 失效
    1,1,1,3,3-五氟丙烷（R-245fa）的纯化

    公开(公告)号：US6077982A

    公开(公告)日：2000-06-20

    申请号：US123381

    申请日：1998-07-27

    申请人： Stephen Frederic Yates ,  Romulus Gaita

    发明人： Stephen Frederic Yates ,  Romulus Gaita

    IPC分类号： C07C17/395 ,  C07C19/08 ,  C07C17/38

    CPC分类号： C07C17/395

    摘要： In the synthesis of 1,1,1,3,3-pentafluoropropane (R-245fa), a mixture of R-245fa and the impurity 1-chloro-3,3,3-trifluoropropene (R-1233zd) is purified and R-1233zd is removed from the mixture by contacting the mixture with 1-5 mols of chlorine for each mol of R-1233zd in the presence of ultraviolet light having a wavelength between about 300 to 400 nm which provides at least 0.02 watts-hour/kg of the mixture, the R-1233zd being reduced to below 10 wt. ppm or lower, as it is converted to 1,2,2-trichloro-3,3,3-trifluoropropane (R-233) or other propane which contains more chlorine and which has a higher boiling point than R-245fa and can be separated easily from R-245fa, the photochlorination being effected in a manner such that at least about 96 wt. % of the starting amount of R-245fa is maintained in the mixture.

    摘要翻译： 在合成1,1,1,3,3-五氟丙烷（R-245fa）中，纯化R-245fa和杂质1-氯-3,3,3-三氟丙烯（R-1233zd）的混合物，R 在波长为约300至400nm的紫外光存在下，每摩尔R-1233zd将混合物与1-5摩尔氯接触，从而从混合物中除去-1233zd，其提供至少0.02瓦特/小时 的混合物，将R-1233zd还原成低于10wt。 ppm或更低，因为其转化为1,2,2-三氯-3,3,3-三氟丙烷（R-233）或其它含有较多氯并且沸点高于R-245fa的丙烷，并且可以是 从R-245fa容易地分离，光氯化以这样的方式进行，使得至少约96wt。 在混合物中保持R-245fa的起始量的％。

    Titanate bound photosensitizer for producing singlet oxygen
    8.
    发明授权
    Titanate bound photosensitizer for producing singlet oxygen 失效
    钛酸盐结合光敏剂用于生产单线态氧

    公开(公告)号：US4915804A

    公开(公告)日：1990-04-10

    申请号：US287317

    申请日：1988-12-20

    申请人： Stephen F. Yates ,  Mary L. Good ,  Romulus Gaita

    发明人： Stephen F. Yates ,  Mary L. Good ,  Romulus Gaita

    IPC分类号： B01J19/08 ,  B01J31/00 ,  B01J31/02 ,  B01J31/38 ,  B05D3/02 ,  B05D7/00 ,  C01B13/00 ,  G03C1/72

    CPC分类号： B01J31/0212 ,  B01J21/063 ,  B01J31/1616 ,  B01J31/2226 ,  B01J35/004 ,  B01J37/0215 ,  C01B13/02 ,  B01J2231/70 ,  B01J2531/46 ,  Y10S522/904

    摘要： This invention relates to a photosensitizer which is bound to a titanate polymer, a method of preparing the bound photosensitizer and a process for using the bound photosensitizer. The photosensitizers which may be used in the invention include rose bengal, azure blue, rhodamine B, fluorescein and eosin. The photosensitizer is attached to the titanate by displacing a ligand on the titanate with a hydroxyl group on the photosensitizer. Finally, the bound photosensitizer may be used to oxidize undesirable oxidizable compounds present in a hydrocarbon or aqueous fraction. One specific example is the sweetening of kerosene which involves oxidizing the mercaptans contained in the kerosene to disulfides.

    摘要翻译： 本发明涉及与钛酸酯聚合物结合的光敏剂，制备结合光敏剂的方法和使用结合的光敏剂的方法。 可用于本发明的光敏剂包括玫瑰红，天蓝色，罗丹明B，荧光素和曙红。 光敏剂通过在光敏剂上用羟基置换钛酸盐上的配体而连接到钛酸盐上。 最后，结合的光敏剂可用于氧化存在于烃或水性馏分中的不希望的可氧化化合物。 一个具体实例是煤油的甜化，其涉及将包含在煤油中的硫醇氧化成二硫化物。