Process for removing metallic corrosion products from carbonylation
reactions carried out under anhydrous conditions
    42.
    发明授权
    Process for removing metallic corrosion products from carbonylation reactions carried out under anhydrous conditions 失效
    从非强制性条件下运输的碳化反应中除去金属腐蚀产物的方法

    公开(公告)号:US5124290A

    公开(公告)日:1992-06-23

    申请号:US777066

    申请日:1991-10-16

    CPC分类号: C07C51/573 C07C51/47

    摘要: A process for removing metallic corrosion products from carbonylation reactions which are carried out under anhydrous conditions and in which methyl acetate and/or methanol and/or dimethyl ether are reacted over a noble metal catalyst system which comprises a noble metal of group VIII of the periodic table of the elements, a co-catalyst, such as iodide or bromide, in particular methyl iodide, and a promoter, such as an organophosphonium or organoammonium salt, and if appropriate a lithium salt, to give acetic acid and/or acetic anhydride is described, the process comprisinga) bringing the reaction solution which is contaminated with metallic corrosion products and contains the catalyst system into contact with an ion exchanger;b) separating this reaction solution which has been brought into contact in this way from the ion exchanger;c) desorbing the promoter adsorbed on the ion exchanger before regeneration with acetic acid and/or acetic anhydride;d) combining the eluate obtained in step c) with the reaction solution separated off in step b) and recycling the components together into the carbonylation reaction;e) regenerating the ion exchanger obtained from step c) with a strong mineral acid; andf) washing the ion exchanger regenerated in this way with acetic acid and/or acetic anhydride until free from water, before use in step a).

    摘要翻译: 一种在无水条件下进行羰基化反应的金属腐蚀产物的方法,其中乙酸甲酯和/或甲醇和/或二甲醚在贵金属催化剂体系上反应,贵金属催化剂体系包含周期性的第VIII族贵金属 表中的元素,助催化剂如碘化物或溴化物,特别是甲基碘,以及促进剂如有机鏻盐或有机铵盐,以及如果合适的话,锂盐,得到乙酸和/或乙酸酐是 描述了该方法,该方法包括:a)将被金属腐蚀产物污染的反应溶液带入与离子交换器接触的催化剂体系; b)将已经以这种方式接触的反应溶液从离子交换器分离; c)在用乙酸和/或乙酸酐再生之前解吸吸附在离子交换剂上的促进剂; d)将步骤c)中获得的洗脱液与步骤b)中分离的反应溶液合并,并将组分一起再循环到羰基化反应中; e)用强无机酸再生步骤c)获得的离子交换剂; 以及f)在步骤a)中使用之前,用乙酸和/或乙酸酐洗涤离子交换剂,直至不含水再洗涤。

    Electric switch
    45.
    发明授权
    Electric switch 有权
    电开关

    公开(公告)号:US08456113B2

    公开(公告)日:2013-06-04

    申请号:US13221048

    申请日:2011-08-30

    IPC分类号: H02K7/10

    CPC分类号: H01H9/063 H01H2300/002

    摘要: An electric switch for an electric tool with an electric motor. The switch has first electrical terminals for electrical connection to a voltage supply and second electrical terminals for electrical connection to the electric motor. The switch has an actuating mechanism which can be adjusted between an initial position and a final position, wherein the electric motor is switched off when the actuating mechanism is located in the initial position and is switched on when the actuating mechanism is not located in the initial position. The switch also has a braking circuit for braking the electric motor, the braking circuit operating when the actuating mechanism is reset to the initial position. The switch also has a reversal circuit for switching over the direction of rotation of the electric motor. The braking circuit is arranged between the second electrical terminals and the reversal circuit.

    摘要翻译: 一种电动马达电动开关。 该开关具有用于电连接到电压源的第一电端子和用于与电动机电连接的第二电端子。 开关具有可以在初始位置和最终位置之间调节的致动机构,其中当致动机构位于初始位置时电动机被切断并且当致动机构不位于初始位置时被接通 位置。 开关还具有用于制动电动机的制动电路,当致动机构被复位到初始位置时,制动回路工作。 该开关还具有用于切换电动机的旋转方向的反转电路。 制动电路设置在第二电端子和反向电路之间。

    Polycarbonate molding compositions
    47.
    发明授权
    Polycarbonate molding compositions 有权
    聚碳酸酯模塑组合物

    公开(公告)号:US07709573B2

    公开(公告)日:2010-05-04

    申请号:US11633795

    申请日:2006-12-05

    IPC分类号: C08L69/00

    摘要: A thermoplastic molding composition having improved properties is disclosed. The composition comprises polycarbonate resin, a first graft polymer, a first free copolymer, a second graft polymer and a second free copolymer; the weight-average molecular weight of the first free copolymer being lower by at least 32,000 g/mol with regard to that of the second free copolymer. The inventive composition features improved balance of melt flowability and ductility, good resistance to hydrolysis and process stability.

    摘要翻译: 公开了具有改进性能的热塑性模塑组合物。 组合物包含聚碳酸酯树脂,第一接枝聚合物,第一游离共聚物,第二接枝聚合物和第二游离共聚物; 相对于第二游离共聚物,第一游离共聚物的重均分子量低至少32,000g / mol。 本发明的组合物具有改进的熔体流动性和延展性的平衡,良好的耐水解性和工艺稳定性。

    Polycarbonate molding compositions
    49.
    发明申请
    Polycarbonate molding compositions 有权
    聚碳酸酯模塑组合物

    公开(公告)号:US20070135568A1

    公开(公告)日:2007-06-14

    申请号:US11633795

    申请日:2006-12-05

    IPC分类号: C08L51/08

    摘要: A thermoplastic molding composition having improved properties is disclosed. The composition comprises polycarbonate resin, a first graft polymer, a first free copolymer, a second graft polymer and a second free copolymer; the weight-average molecular weight of the first free copolymer being lower by at least 32,000 g/mol with regard to that of the second free copolymer. The inventive composition features improved balance of melt flowability and ductility, good resistance to hydrolysis and process stability.

    摘要翻译: 公开了具有改进性能的热塑性模塑组合物。 组合物包含聚碳酸酯树脂,第一接枝聚合物,第一游离共聚物,第二接枝聚合物和第二游离共聚物; 相对于第二游离共聚物,第一游离共聚物的重均分子量低至少32,000g / mol。 本发明的组合物具有改进的熔体流动性和延展性的平衡,良好的耐水解性和工艺稳定性。

    Flame-resistant polycarbonate molding compositions
    50.
    发明授权
    Flame-resistant polycarbonate molding compositions 有权
    耐火聚碳酸酯模塑组合物

    公开(公告)号:US07220790B2

    公开(公告)日:2007-05-22

    申请号:US10627015

    申请日:2003-07-25

    IPC分类号: C08K5/523

    摘要: A thermoplastic molding composition having good flame resistance, melt flowability, resistance to chemicals and creep is disclosed. The composition contains A) at least one member having weight average molecular weight (Mw) of 25,000 to 35,000 g/mol, selected from the group consisting of aromatic polycarbonate and polyestercarbonate B) ABS graft polymer produced by the mass polymerization process and characterized in (i) having a butadiene content of 8 to 15% in relation to the weight of the graft polymer, (ii) having an acrylic acid derivative content of 15 to 30% in relation to the total weight of the acrylic derivative and styrene monomer, and (iii) containing styrene monomer-acrylic acid derivative copolymer having a weight average molecular weight of 5·104 to 14·104 g/mol. The composition may further contain one or more of halogen-free phosphorus compounds, fluorinated polyolefin, a polymer containing acrylate monomer and an inorganic material in particulate form.

    摘要翻译: 公开了具有良好的阻燃性,熔体流动性,耐化学性和蠕变性的热塑性模塑组合物。 该组合物包含A)至少一种重均分子量(M≤W2)为25,000至35,000g / mol,选自芳族聚碳酸酯和聚酯碳酸酯B)ABS接枝聚合物 本发明的聚合方法的特征在于(i)相对于接枝聚合物的重量,丁二烯含量为8〜15%,(ii)丙烯酸衍生物含量相对于总重量为15〜30% 丙烯酸衍生物和苯乙烯单体,和(iii)含有重均分子量为5.10-4.0×10-4 / g的苯乙烯单体 - 丙烯酸衍生物共聚物。 组合物还可以含有一种或多种无卤素磷化合物,氟化聚烯烃,含丙烯酸酯单体的聚合物和颗粒形式的无机材料。