Process for preparing diaryl carbonates
    2.
    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:US5502232A

    公开(公告)日:1996-03-26

    申请号:US339613

    申请日:1994-11-15

    CPC分类号: C07C68/005

    摘要: Diaryl carbonates can be prepared by reacting aromatic hydroxy compounds with CO and O.sub.2 at elevated temperature over a noble metal catalyst in the presence of a base, a quaternary salt, a cocatalyst and a dessicant. According to the invention, the noble metal catalyst is activated with CO in the presence of the quaternary salt and optionally in the presence of the cocatalyst. In a particular process variant, the base used is a preformed alkali metal phenoxide.

    摘要翻译: 在贵金属催化剂的存在下,在碱,季盐,助催化剂和干燥剂的存在下,芳族羟基化合物与CO和O 2在升高的温度下反应可制备碳酸二芳基酯。 根据本发明,贵金属催化剂在季盐的存在下和任选地在助催化剂存在下用CO活化。 在特定的方法变体中,所用的碱是预先形成的碱金属酚盐。

    Method of extractive separation of diaryl carbonates and the original
aromatic hydroxy compounds from reaction solutions
    3.
    发明授权
    Method of extractive separation of diaryl carbonates and the original aromatic hydroxy compounds from reaction solutions 失效
    从反应溶液中萃取分离碳酸二芳基酯和原始芳族羟基化合物的方法

    公开(公告)号:US5712406A

    公开(公告)日:1998-01-27

    申请号:US794435

    申请日:1997-02-05

    CPC分类号: C07C68/08 C07C68/005

    摘要: Diaryl carbonate and an aromatic hydroxy compound are simultaneously separated from a crude reaction mixture for producing diaryl carbonates by oxidative carbonylation of the aromatic hydroxy compound and containing the diaryl carbonate and excess hydroxy compound together with the catalyst system, consisting of a noble-metal catalyst, co-catalyst, quaternary salt and a base. The crude reaction mixture is mixed with a covalent aprotic extraction agent, a phase separation is carried out into a donor phase containing the catalyst system and a recipient phase containing the diaryl carbonate and the hydroxy compound in concentrated form, and the diaryl carbonate and the hydroxy compound are isolated from the recipient phase.

    摘要翻译: 碳酸二芳酯和芳族羟基化合物同时从用于通过芳族羟基化合物的氧化羰基化产生碳酸二芳基酯的粗制反应混合物中分离,并含有碳酸二芳基酯和过量的羟基化合物以及由贵金属催化剂组成的催化剂体系, 助催化剂,季盐和碱。 将粗反应混合物与共价非质子提取剂混合,将相分离进入含有催化剂体系的供体相和含有碳酸二芳酯和浓缩形式的羟基化合物的接收相,碳酸二芳基酯和羟基 化合物从受体相分离。

    Process for preparing diaryl carbonates and the polycarbonates
obtainable therefrom
    5.
    发明授权
    Process for preparing diaryl carbonates and the polycarbonates obtainable therefrom 失效
    制备碳酸二芳酯和由其获得的聚碳酸酯的方法

    公开(公告)号:US5739258A

    公开(公告)日:1998-04-14

    申请号:US804287

    申请日:1997-03-03

    CPC分类号: C08G64/307 C07C68/005

    摘要: The invention relates to a process for preparing a diaryl carbonate by oxidative carbonylation of the basic aromatic hydroxy compound, in which the aromatic hydroxy compound is the one which is eliminated during melt polycondensation of this diaryl carbonate with a bisphenol. Accordingly the invention also relates to the preparation of polycarbonates by melt polycondensation of diaryl carbonates with bisphenols in which the aromatic hydroxy compounds which is eliminated is used again to prepare the diaryl carbonate. In the event that the aromatic hydroxy compound eliminated is also the basic unit in the bisphenol used, proportions of it may be used to prepare both the diaryl carbonate and the bisphenol.

    摘要翻译: 本发明涉及通过碱性芳族羟基化合物的氧化羰基化制备碳酸二芳基酯的方法,其中芳族羟基化合物是在该碳酸二芳基酯与双酚的熔融缩聚期间被消除的。 因此,本发明还涉及通过碳酸二芳基酯与双酚的熔融缩聚制备聚碳酸酯,其中除去的芳族羟基化合物再次用于制备碳酸二芳基酯。 在除去芳族羟基化合物也是所用双酚中的基本单元的情况下,其比例可用于制备碳酸二芳基酯和双酚。

    Supported catalysts containing a platinum metal and process for preparing diaryl carbonates
    7.
    发明授权
    Supported catalysts containing a platinum metal and process for preparing diaryl carbonates 失效
    含铂金属的载体催化剂和制备碳酸二芳基酯的方法

    公开(公告)号:US06548445B1

    公开(公告)日:2003-04-15

    申请号:US08625613

    申请日:1996-03-29

    IPC分类号: B01J2713

    摘要: In the process for preparing an aromatic carbonate from an aromatic hydroxy compound, CO and O2 in the presence of a quaternary salt and a base using a platinum metal catalyst and a cocatalyst, use is advantageously made of supported catalysts containing, in the reaction-ready state, (i) a platinum metal, a platinum metal halide or a platinum metal halide complex and (ii) a metal compound acting as cocatalyst from groups IB, IIB, IIIA, IIIB, IVA, IVB, VB, VIB, VIIB, the iron group (atomic numbers 26-28) or the rare earth metals (atomic numbers 58-71) of the Periodic Table of the Elements (Mendeleev), each in an amount of 0.01-15% by weight, calculated as metal and based on the total weight of the catalyst.

    摘要翻译: 在使用铂金属催化剂和助催化剂的季盐和碱的存在下,由芳族羟基化合物,CO和O 2制备芳香族碳酸酯的方法中,有利地由负载型催化剂制成, 状态,(i)铂金属,铂金属卤化物或铂金属卤化物络合物和(ii)作为IB,IIB,IIIA,IIIB,IVA,IVB,VB,VIB,VIIB族的助催化剂的金属化合物, 元素周期表(Mendeleev)的铁族(原子数26-28)或稀土金属(原子数58-71),其量为0.01-15%(重量),以金属计算,基于 催化剂的总重量。

    Process for producing diaryl carbonates
    9.
    发明授权
    Process for producing diaryl carbonates 失效
    生产碳酸二芳酯的方法

    公开(公告)号:US5856554A

    公开(公告)日:1999-01-05

    申请号:US853516

    申请日:1997-05-09

    IPC分类号: C07C69/96 C07C68/00

    CPC分类号: C07C68/005

    摘要: The present invention relates to a process for producing diaryl carbonates by the reaction of an aromatic hydroxy compound (e.g. phenol) with carbon monoxide and oxygen in the presence of a catalyst, a co-catalyst, a quaternary salt and a base, which is characterised in that the reaction is conducted in a melt comprising the diaryl carbonate and the hydroxy compound on which the carbonate is based, and further diaryl carbonate is optionally added to this reaction mixture before work-up.

    摘要翻译: 本发明涉及通过芳族羟基化合物(例如苯酚)与一氧化碳和氧在催化剂,助催化剂,季盐和碱的存在下反应生产碳酸二芳酯的方法,其特征在于 因为反应在包含碳酸二芳基酯和碳酸酯基的羟基化合物的熔体中进行,并且在后处理之前任选地向该反应混合物中加入碳酸二芳基酯。