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188 条记录 (耗时 0.036 秒)

    Azeotrope of HF and 1233zd
    5.
    发明授权
    Azeotrope of HF and 1233zd 失效
    HF和1233zd的共沸物

    公开(公告)号：US6013846A

    公开(公告)日：2000-01-11

    申请号：US35696

    申请日：1998-03-05

    申请人： John A. Wismer ,  Michael S. Bolmer ,  Bin Chen

    发明人： John A. Wismer ,  Michael S. Bolmer ,  Bin Chen

    IPC分类号： C07C17/386 ,  C07C17/00 ,  C07C17/38 ,  C07C17/383 ,  C07C21/18

    CPC分类号： C07C21/18 ,  C07C17/00 ,  C07C17/38 ,  C07C17/383

    摘要： An azeotrope containing HF and 1233zd is provided, as are methods for separating this azeotrope from mixtures of HF and 1233zd which are HF-rich or 1233zd-rich and methods for making use of the azeotrope and separation methods to improve processes for preparing 1233zd, an intermediate used in the preparation of 245fa. 245fa is a known foam blowing agent and refrigerant.

    摘要翻译： 提供了含有HF和1233zd的共沸物，以及从HF和1233zd的富HF或1233zd富集的混合物中分离该共沸物的方法，以及利用共沸物和分离方法改进制备1233zd的方法 中间体用于制备245fa。 245fa是已知的泡沫发泡剂和制冷剂。

    High current density semi-bright and bright zinc sulfur-acid salt electrogalvanizing process and composition
    9.
    发明授权
    High current density semi-bright and bright zinc sulfur-acid salt electrogalvanizing process and composition 失效
    高电流密度半亮光亮锌硫酸盐电镀锌工艺及组成

    公开(公告)号：US5788822A

    公开(公告)日：1998-08-04

    申请号：US854316

    申请日：1997-05-12

    申请人： Nicholas M. Martyak ,  Marie M. Kasper

    发明人： Nicholas M. Martyak ,  Marie M. Kasper

    IPC分类号： C25D3/22 ,  C25D3/56

    CPC分类号： C25D3/22 ,  C25D3/565

    摘要： The inventors disclose a process for producing semi-bright to bright electrogalvanic coatings at high current densities, comprising electroplating a cathodic conductive substrate in a coating bath based on:a) a zinc sulfur-acid salt; b) a low molecular weight polyoxyalkylene glycol based on 2 to about 4 carbon atom alkylene oxides; c) an aromatic sulfonate; and d) a conductivity enhancing salt. The process includes maintaining the coating composition at a pH from about 2 to about 5 and the current density on the substrate at from about 1,000 to about 3,700 ASF. The zinc sulfur-acid salt includes zinc sulfate or a zinc organosulfonate, and the conductivity enhancing salt, a potassium salt. In one embodiment, the aromatic sulfonate comprises a condensation product of an aromatic sulfonate and formaldehyde. The inventors also describes coating bath compositions.

    摘要翻译： 本发明人公开了一种以高电流密度生产半亮光亮电镀层的方法，包括以下步骤：在镀浴中电镀阴极导电衬底，其基于：a）锌硫酸盐; b）基于2至约4个碳原子的氧化烯的低分子量聚氧亚烷基二醇; c）芳族磺酸盐; 和d）导电性增强盐。 该方法包括将涂料组合物保持在约2至约5的pH和基材上的电流密度为约1,000至约3,700 ASF。 锌硫酸锌盐包括硫酸锌或有机磺酸锌，以及导电性增强盐，钾盐。 在一个实施方案中，芳族磺酸盐包括芳族磺酸盐和甲醛的缩合产物。 本发明人还描述了涂料浴组合物。

    Hydroformylation process with separation and recycle of active rhodium catalyst
    10.
    发明授权
    Hydroformylation process with separation and recycle of active rhodium catalyst 失效
    活性铑催化剂分离和再循环的羰基化方法

    公开(公告)号：US5773665A

    公开(公告)日：1998-06-30

    申请号：US683593

    申请日：1996-07-15

    申请人： Gary Stephen Silverman ,  Paul Mercando

    发明人： Gary Stephen Silverman ,  Paul Mercando

    IPC分类号： C07C45/50

    CPC分类号： C07C45/50 ,  Y02P20/584

    摘要： Active Rhodium catalyst and impurities are separated from a hydroformylation process stream containing both active and inactive organo-rhodium catalyst by binding active catalyst and impurities to an acidic ion exchange resin containing an acidic group. The purified hydroformylation stream can be returned to the hydroformylation reactor. All or a portion of inactive rhodium can be reactivated before recycling purified hydroformylation process stream to the reactor. During regeneration of the resin, a neutral solvent is used first to remove impurities which are discarded, then an acidic solvent is used to remove active organic rhodium catalyst from the resin. Such active catalyst can be rehydrided and returned to the hydroformylation reactor. An ion exchange resin having at least one acid group disposed on a silica backbone and an active organo-rhodium complex from a hydroformylation process stream bound to the resin can be produced.

    摘要翻译： 通过将活性催化剂和杂质结合到含有酸性基团的酸性离子交换树脂上，活性铑催化剂和杂质与含有活性和无活性有机铑催化剂的加氢甲酰化工艺流分离。 纯化的加氢甲酰化流可返回加氢甲酰化反应器。 在将纯化的加氢甲酰化工艺流再循环到反应器之前，全部或部分惰性铑可以再活化。 在树脂的再生期间，首先使用中性溶剂除去废弃的杂质，然后使用酸性溶剂从树脂中除去活性有机铑催化剂。 这种活性催化剂可以再水合并返回到加氢甲酰化反应器。 可以制备具有至少一个设置在二氧化硅骨架上的酸基的离子交换树脂和与该树脂结合的加氢甲酰化工艺流的活性有机 - 铑络合物。