Process for preparing diaryl carbonate
    2.
    发明授权
    Process for preparing diaryl carbonate 失效
    制备碳酸二芳基酯的方法

    公开(公告)号:US5892089A

    公开(公告)日:1999-04-06

    申请号:US944231

    申请日:1997-10-06

    IPC分类号: C07C68/00

    CPC分类号: C07C68/00

    摘要: A process for preparing a diaryl carbonate from a diaryl oxalate in a liquid phase by decarbonylation is conducted by the steps of:1) performing a decarbonylation reaction of a diaryl oxalate in the presence of an organic phosphorus compound catalyst to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst;2) recovering the diaryl carbonate from the reaction mixture; and3) performing a decarbonylation reaction of a diaryl oxalate in the presence of the reaction mixture from which the diaryl carbonate has been recovered and to which a halogen atom-containing compound is added, to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst.

    摘要翻译: 通过脱羰由草酸二芳基酯在液相中制备碳酸二芳基酯的方法是通过以下步骤进行的:1)在有机磷化合物催化剂存在下进行草酸二芳基酯的脱羰基化反应,得到 碳酸二芳酯和有机磷化合物催化剂; 2)从反应混合物中回收碳酸二芳基酯; 和3)在已经回收了碳酸二芳基酯并且含有含卤原子的化合物的反应混合物存在下进行草酸二芳酯的脱羰基反应,得到碳酸二芳基酯和有机物的反应混合物 磷化合物催化剂。

    Process for producing a polycarbonate
    3.
    发明授权
    Process for producing a polycarbonate 失效
    聚碳酸酯的制造方法

    公开(公告)号:US5922827A

    公开(公告)日:1999-07-13

    申请号:US936666

    申请日:1997-09-24

    IPC分类号: C08G64/30 C08G64/00

    CPC分类号: C08G64/307

    摘要: A diaryl carbonate is produced by decarbonylating a diaryl oxalate, which can be prepared by transesterification of a dialkyl oxalate with a hydroxyaryl compound, in the presence of a catalyst, while removing the resultant carbon monoxide as a by-product, and then optionally refined by an evaporation and/or distillation, and then the resultant diaryl carbonate is condensation-polymerized with a polyhydroxyl compound, while recovering a resultant hydroxyaryl compound from the reaction system, to produce a polycarbonate.

    摘要翻译: 碳酸二芳基酯是通过将草酸二芳基酯脱碳化而制得的,该草酸二芳基酯可以在催化剂存在下通过草酸二烷基酯与羟基芳基化合物的酯交换制备,同时除去作为副产物的所得一氧化碳,然后任选地通过 蒸发和/或蒸馏,然后将所得碳酸二芳基酯与多羟基化合物缩聚,同时从反应体系中回收得到的羟基芳基化合物,以制备聚碳酸酯。

    Process for producing a diaryl carbonate
    4.
    发明授权
    Process for producing a diaryl carbonate 失效
    制备碳酸二芳基酯的方法

    公开(公告)号:US5731453A

    公开(公告)日:1998-03-24

    申请号:US814089

    申请日:1997-03-10

    摘要: A diaryl carbonate with a high degree of purity is produced at a high yield by (A) subjecting (a) a diaryl oxalate and a phenol compound or (b) an alkylaryl oxalate to transesterification reaction in one or two stages in the presence of a catalyst to prepare a diaryl oxalate, while removing a by-product from the reaction system; (B) collecting the diaryl oxalate from the resultant reaction product mixture of the step (A); (C) subjecting the diaryl oxalate to a decarbonylation reaction, preferably in the presence of a phosphorous compound-containing catalyst, to convert the diaryl oxalate to a corresponding diaryl carbonate, while removing a reaction by-product comprising carbon monoxide from the reaction system; and (D) collecting the diaryl carbonate from the reaction product mixture of the step (C).

    摘要翻译: 通过(A)在(a)草酸二芳基酯和酚化合物或(b)草酸烷基芳基酯在一个或两个阶段中存在下进行酯交换反应,以高产率生产具有高纯度的碳酸二芳基酯 催化剂,以制备草酸二芳基酯,同时从反应体系中除去副产物; (B)从所得步骤(A)的反应产物混合物中收集草酸二芳基酯; (C)优选在含磷化合物的催化剂存在下使草酸二芳基酯进行脱羰反应,将草酸二芳基酯转化为相应的碳酸二芳基酯,同时从反应体系中除去包含一氧化碳的反应副产物; 和(D)从步骤(C)的反应产物混合物中收集碳酸二芳基酯。

    Process for producing diaryl carbonate
    6.
    发明授权
    Process for producing diaryl carbonate 失效
    生产碳酸二芳酯的方法

    公开(公告)号:US5834615A

    公开(公告)日:1998-11-10

    申请号:US936513

    申请日:1997-09-24

    IPC分类号: C07C68/00

    CPC分类号: C07C68/00

    摘要: A high purity diaryl carbonate is produced with a high efficiency by reacting carbon monoxide with an alkyl nitrite and/or an alkyl alcohol; reacting the resultant dialkyl oxalate with a hydroxyaryl compound, for example, phenol; decarbonylating the resultant diaryl oxalate to produce a diaryl carbonate and carbon monoxide; and collecting the diaryl carbonate from the decarbonylation reaction product mixture, the carbon monoxide produced in the decabonylation step being optionally reused for the production of the dialkyl oxalate.

    摘要翻译: 通过使一氧化碳与亚硝酸烷基酯和/或烷基醇反应,高效率地生产高纯度碳酸二芳基酯; 使得到的草酸二烷基酯与羟基芳基化合物例如苯酚反应; 将所得的草酸二芳酯脱碳酸化以产生碳酸二芳酯和一氧化碳; 并从脱羰基反应产物混合物中收集碳酸二芳基酯,在癸二酰化步骤中产生的一氧化碳任选地再次用于生产草酸二烷基酯。

    Process for producing a diaryl carnonate
    7.
    发明授权
    Process for producing a diaryl carnonate 失效
    生产碳酸二芳酯的方法

    公开(公告)号:US5811573A

    公开(公告)日:1998-09-22

    申请号:US988759

    申请日:1997-12-11

    摘要: A diaryl carbonate with a high degree of purity is produced at a high yield by (A) subjecting (a) a diaryl oxalate and a phenol compound or (b) an alkylaryl oxalate to transesterification reaction in one or two stages in the presence of a catalyst to prepare a diaryl oxalate, while removing a by-product from the reaction system; (B) collecting the diaryl oxalate from the resultant reaction product mixture of the step (A); (C) subjecting the diaryl oxalate to a decarbonylation reaction, preferably in the presence of a phosphorous compound-containing catalyst, to convert the diaryl oxalate to a corresponding diaryl carbonate, while removing a reaction by-product comprising carbon monoxide from the reaction system; and (D) collecting the diaryl carbonate from the reaction product mixture of the step (C).

    摘要翻译: 通过(A)在(a)草酸二芳基酯和酚化合物或(b)草酸烷基芳基酯在一个或两个阶段中存在下进行酯交换反应,以高产率生产具有高纯度的碳酸二芳基酯 催化剂,以制备草酸二芳基酯,同时从反应体系中除去副产物; (B)从所得步骤(A)的反应产物混合物中收集草酸二芳基酯; (C)优选在含磷化合物的催化剂存在下使草酸二芳基酯进行脱羰反应,将草酸二芳基酯转化为相应的碳酸二芳基酯,同时从反应体系中除去包含一氧化碳的反应副产物; 和(D)从步骤(C)的反应产物混合物中收集碳酸二芳基酯。

    Process for producing aryl carbamates
    8.
    发明授权
    Process for producing aryl carbamates 失效
    制备芳基氨基甲酸酯的方法

    公开(公告)号:US6143917A

    公开(公告)日:2000-11-07

    申请号:US171076

    申请日:1998-10-13

    IPC分类号: C07C269/04 C07D295/205

    CPC分类号: C07D295/205 C07C269/04

    摘要: A process for producing an aryl carbamate of a high purity at a high yield by reacting a diaryl carbonate with an amine compound having one or more hydrogen atoms bonded to the N position in the presence of carboxylic acid(s) of the following general formulae (I): R.sup.1 --COOH and/or (II): R.sup.2 --COOH (wherein R.sup.1 represents an alkyl or cycloalkyl group having an .alpha.-positioned carbon atom bonded to only one hydrogen atom, an alkyl group having an .alpha.-positioned carbon atom bonded to no hydrogen atom, or an aryl or heterocyclic group, and R.sup.2 represents an alkyl group having an .alpha.-positioned carbon atom bonded to two or more hydrogen atoms).

    摘要翻译: PCT No.PCT / JP98 / 00592 Sec。 371日期:1998年10月13日 102(e)1998年10月13日日期PCT提交1998年2月13日PCT公布。 出版物WO98 / 35936 日期:1998年8月20日一种通过使碳酸二芳基酯与具有一个或多个氢原子的胺化合物在羧酸存在下与N位相结合的方法,以高收率制备高纯度氨基甲酸芳基酯的方法 以下通式(I):R 1 -COOH和/或(II):R 2 -COOH(其中R 1表示具有仅与一个氢原子键合的α-位置碳原子的烷基或环烷基,具有α 与无氢原子结合的位置碳原子,或芳基或杂环基,R2表示具有与两个或多个氢原子结合的α位碳原子的烷基)。