Method for hydrogenating aromatic polymers in the presence of special catalysts
    64.
    发明授权
    Method for hydrogenating aromatic polymers in the presence of special catalysts 失效
    在特殊催化剂存在下氢化芳族聚合物的方法

    公开(公告)号:US06841626B1

    公开(公告)日:2005-01-11

    申请号:US09890737

    申请日:2000-01-26

    CPC分类号: C08F8/04 C08F12/00

    摘要: A process for hydrogenating aromatic polymers is disclosed. The process entails using a supported catalyst wherein support contains alumina and where the catalyst comprise at least one metal of subgroup VIII of the Periodic Table. The catalyst is characterized in that the pore volume of the pores having diameters of 1000 to 10,000 Angstrom is 15 to 100% relative to the total pore volume, as determined by mercury porosimetry.

    摘要翻译: 公开了一种用于氢化芳族聚合物的方法。 该方法需要使用负载型催化剂,其中载体包含氧化铝,并且其中催化剂包含元素周期表第VIII族的至少一种金属。 催化剂的特征在于,通过水银孔率法测定,孔径为1000至10,000埃的孔的孔体积相对于总孔体积为15-100%。

    Method for hydrogenating aromatic polymers in the presence of hydrocarbons which contain oxygen
    65.
    发明授权
    Method for hydrogenating aromatic polymers in the presence of hydrocarbons which contain oxygen 失效
    在含有氧的烃存在下氢化芳族聚合物的方法

    公开(公告)号:US06420491B1

    公开(公告)日:2002-07-16

    申请号:US09743830

    申请日:2001-01-16

    IPC分类号: C08F804

    CPC分类号: C08F8/04

    摘要: A catayltic process for the hydrogenation of aromatic polymers is disclosed. The catalyst used in the process is a metal or mixture of metals of sub-group VIII of the periodic table together with a support of silicon dioxide, aluminum oxide or a mixture thereof. The catalyst, having pores is characaterized in that the pores having diameters of 100 to 1,000 Å constitute less than 15 percent of the total volume of pores. The hydrogenation, that is carried out in the presence of at least one oxygen-containing hydrocarbon is characterized in that it is essentially complete and without significant degradation of molecular weights.

    摘要翻译: 公开了用于芳族聚合物氢化的催化方法。 该方法中使用的催化剂是周期表第VIII族金属或金属的混合物以及二氧化硅,氧化铝或其混合物的载体。 具有孔的催化剂的特征在于直径为100至1000埃的孔小于孔体积的15%。 在至少一种含氧烃存在下进行的氢化反应的特征在于其基本上是完全的且分子量没有明显的降解。

    Process for the continuous production of diaryl carbonates
    68.
    发明授权
    Process for the continuous production of diaryl carbonates 失效
    连续生产碳酸二芳基酯的方法

    公开(公告)号:US5821377A

    公开(公告)日:1998-10-13

    申请号:US825603

    申请日:1997-04-01

    CPC分类号: C07C68/005

    摘要: In the process for the production of diaryl carbonates by oxidative carbonylation of the underlying aromatic hydroxy compounds in the presence of a catalyst containing a platinum group metal, a co-catalyst, a quaternary salt and a base, the catalyst is used as a supported catalyst in a stationary arrangement or in the fluid phase and the reaction is performed in the condensed phase. The co-catalyst is preferably also attached to the support.

    摘要翻译: 在通过在含有铂族金属,助催化剂,季盐和碱的催化剂存在下,通过氧化羰基化下面的芳族羟基化合物来制备碳酸二芳酯的方法中,催化剂用作载体催化剂 在静止排列或流体相中,反应在凝聚相中进行。 助催化剂优选也附着在载体上。

    Process for preparing diaryl carbonates
    69.
    发明授权
    Process for preparing diaryl carbonates 失效
    制备碳酸二芳基酯的方法

    公开(公告)号:US5663408A

    公开(公告)日:1997-09-02

    申请号:US623728

    申请日:1996-03-29

    CPC分类号: C07C68/005

    摘要: In the preparation of diaryl carbonates from an aromatic hydroxy compound, CO and O.sub.2, use is made not only of a quaternary salt, a base, a platinum metal catalyst and a cocatalyst, but additionally of a heterogeneous promoter which is a compound of the formulaA.sub.x B.sub.y C.sub.z,whereA and B are each, independently of one another, an element of group IIIA, IVA, VA, IIIB, IVB, VB, VIB or VIIB of the Periodic Table of the Elements (Mendeleev),C represents an element of the 2nd period of the Periodic Table of the Elements (Mendeleev),x is a number from 1 to 3,y is a number from 0 to 3 andz is a number from 1 to 12.

    摘要翻译: 在芳族羟基化合物CO和O 2的碳酸二芳基酯的制备中,不仅使用季盐,碱,铂金属催化剂和助催化剂,而且还使用作为式 AxByCz,其中A和B各自独立地为元素周期表(Mendeleev)的IIIA,IVA,VA,IIIB,IVB,VB,VIB或VIIB族的元素,C表示 元素周期表第二期(门德列夫),x为1至3的数,y为0至3的数,z为1至12的数。