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21 条记录 (耗时 0.037 秒)

    Process for producing a diaryl carbonate
    11.
    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

    申请人： Keigo Nishihira ,  Shuji Tanaka ,  Yuki Nishida ,  Hirofumi Ii ,  Satoru Fujitsu ,  Katsumasa Harada ,  Ryoji Sugise ,  Koichi Kashiwagi ,  Takashi Doi

    发明人： Keigo Nishihira ,  Shuji Tanaka ,  Yuki Nishida ,  Hirofumi Ii ,  Satoru Fujitsu ,  Katsumasa Harada ,  Ryoji Sugise ,  Koichi Kashiwagi ,  Takashi Doi

    IPC分类号： C07C67/02 ,  C07C67/03 ,  C07C68/00 ,  C07C69/36 ,  C07C69/96

    CPC分类号： C07C67/03 ,  C07C68/00 ,  Y02P20/127

    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 a diaryl carnonate
    15.
    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

    申请人： Keigo Nishihira ,  Shuji Tanaka ,  Yuki Nishida ,  Ii Hirofumi ,  Satoru Fujitsu ,  Katsumasa Harada ,  Ryoji Sugise ,  Koichi Kashiwagi ,  Takashi Doi

    发明人： Keigo Nishihira ,  Shuji Tanaka ,  Yuki Nishida ,  Ii Hirofumi ,  Satoru Fujitsu ,  Katsumasa Harada ,  Ryoji Sugise ,  Koichi Kashiwagi ,  Takashi Doi

    IPC分类号： C07C67/02 ,  C07C67/03 ,  C07C68/00 ,  C07C69/36 ,  C07C69/96

    CPC分类号： C07C67/03 ,  C07C68/00 ,  Y02P20/127

    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。

    Diphenyl oxalate-phenol adduct, process for producing the adduct and method of producing diphenyl oxalate from the adduct
    16.
    发明授权
    Diphenyl oxalate-phenol adduct, process for producing the adduct and method of producing diphenyl oxalate from the adduct 失效
    草酸二苯酚 - 苯酚加合物，加合物的制备方法和从加合物生产草酸二苯酯的方法

    公开(公告)号：US5705677A

    公开(公告)日：1998-01-06

    申请号：US757070

    申请日：1996-11-26

    申请人： Keigo Nishihira ,  Shuji Tanaka ,  Yuki Nishida ,  Hirofumi Ii ,  Satoru Fujitsu

    发明人： Keigo Nishihira ,  Shuji Tanaka ,  Yuki Nishida ,  Hirofumi Ii ,  Satoru Fujitsu

    IPC分类号： C07C69/017 ,  C07C69/36

    CPC分类号： C07C69/017 ,  C07C69/36

    摘要： A novel crystalline adduct of diphenyl oxalate and phenol in a molar ratio of 1:2 and having a high purity is produced by melting a mixture containing diphenyl oxalate and phenol at a temperature of 100.degree. C. or more; cooling the melt to a temperature of less than 100.degree. C. to allow a resultant adduct of diphenyl oxalate and phenol in a molar ratio of 1:2 to crystallize and deposit from the melt; and collecting the crystalline adduct. Diphenyl oxalate with a high purity is produced by melting the crystalline adduct to dissociate it into diphenyl oxalate and phenol, and evaporating away the dissociated phenol from the melt to collect the dissociated diphenyl oxalate.

    摘要翻译： 通过在100℃或更高的温度下熔化含有草酸二苯酯和苯酚的混合物，产生摩尔比为1:2且具有高纯度的草酸二苯酯和苯酚的新型结晶加合物; 将熔体冷却至低于100℃的温度，使所得到的草酸二苯酯和苯酚的摩尔比为1:2的加合物从熔体中结晶和沉积; 并收集结晶加合物。 通过熔化结晶加合物将其分解成草酸二苯酯和苯酚，并将离解的苯酚从熔体中蒸发掉以收集离解的草酸二苯酯，从而产生高纯度的二苯基草酸盐。

    Method of producing carbonic acid diester
    18.
    发明授权
    Method of producing carbonic acid diester 失效
    生产碳酸钙的方法

    公开(公告)号：US5214184A

    公开(公告)日：1993-05-25

    申请号：US850678

    申请日：1992-03-13

    申请人： Tokuo Matuzaki ,  Tsuneo Simamura ,  Satoru Fujitsu ,  Yosinobu Toriyahara

    发明人： Tokuo Matuzaki ,  Tsuneo Simamura ,  Satoru Fujitsu ,  Yosinobu Toriyahara

    IPC分类号： C07C68/00

    CPC分类号： C07C68/00

    摘要： A carbonic acid diester is produced at a high stability and selectivity by catalytically reacting carbon monoxide with a nitrous acid ester in gas phase in the presence of a solid catalyst comprising a catalytic solid material carried on a solid carrier and comprising:(1) a first component consisting of a platinum group metal or a compound thereof,(2) a second component consisting of a compound of Fe, Cu, Bi, Co, Ni or Sn,(3) a third component consisting of a compound of V, Mo or W, and(4) a fourth component consisting of a halides, for example, fluorides or chlorides, organic acid salts, for example, formates or acetates, or phosphates of an alkali or alkaline earth metal.

    Process for producing a diaryl oxalate
    20.
    发明授权
    Process for producing a diaryl oxalate 失效
    制备草酸二芳基酯的方法

    公开(公告)号：US6018072A

    公开(公告)日：2000-01-25

    申请号：US875823

    申请日：1997-08-07

    申请人： Keigo Nishihira ,  Shuji Tanaka ,  Yuki Nishida ,  Satoru Fujitsu

    发明人： Keigo Nishihira ,  Shuji Tanaka ,  Yuki Nishida ,  Satoru Fujitsu

    IPC分类号： C07C67/02 ,  C07C69/34

    CPC分类号： C07C67/02

    摘要： The present invention relates to a process for producing a diaryl oxalate, characterized in that an alkylaryl oxalate is subjected to a disproportionation reaction in the presence of a disproportionation catalyst, thereby to produce a diaryl oxalate while removing a by-product comprising a dialkyl oxalate.The production process of the present invention is advantageous in that the kinds of the by-products are fewer than that in conventional production process for diaryl oxalate, and thus can be practically utilized in industry, and the diaryl oxalates such as diphenyl oxalate, produced by the production process of the present invention are very important industrial materials for producing chemical products such as carbamates.

    摘要翻译： PCT No.PCT / JP96 / 03636 Sec。 371日期1997年8月7日 102（e）日期1997年8月7日PCT 1996年12月12日PCT PCT。 公开号WO97 / 21660 日期：1997年6月19日本发明涉及草酸二芳基酯的制备方法，其特征在于草酸烷基芳基酯在歧化催化剂存在下进行歧化反应，从而产生草酸二芳基酯，同时除去副产物 包括草酸二烷基酯。 本发明的制造方法的优点在于副产物的种类比常规的草酸二芳基酯的制备方法少，因此可以实际应用于工业中，草酸二芳基酯如草酸二苯酯，由 本发明的生产方法是用于生产化学产品如氨基甲酸酯的非常重要的工业材料。