利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

11 条记录 (耗时 0.022 秒)

    Polyimide powder and process for producing powder molded body
    3.
    发明授权
    Polyimide powder and process for producing powder molded body 失效
    聚酰亚胺粉末及其制造方法

    公开(公告)号：US5898048A

    公开(公告)日：1999-04-27

    申请号：US831971

    申请日：1997-04-02

    申请人： Hiroaki Yamaguchi ,  Fumio Aoki ,  Akinori Shiotani

    发明人： Hiroaki Yamaguchi ,  Fumio Aoki ,  Akinori Shiotani

    IPC分类号： C08J5/00 ,  C09D179/08 ,  C08G69/26 ,  B32B27/28

    CPC分类号： C08J5/00 ,  C09D179/08 ,  C08J2379/08 ,  Y10T428/2998

    摘要： Aromatic polyimide powder wherein a solid portion consisting of a highly heat resistant crystalline aromatic polyimide is covered with a coating layer of an amorphous polyimide, and a process for producing polyimide powder molded bodies by compression molding of the powder. The polyimide powder has satisfactory secondary molding workability, and molding thereof gives molded bodies which retain heat resistance and dimensional stability while having high mechanical strength and elongation.

    摘要翻译： 芳香族聚酰亚胺粉末，其中由耐高温结晶性芳香族聚酰亚胺构成的固体部分被无定形聚酰亚胺的涂层覆盖，以及通过压缩成型粉末制造聚酰亚胺粉末成型体的方法。 聚酰亚胺粉末具有令人满意的二次成型加工性，其成型赋予保持耐热性和尺寸稳定性的成型体，同时具有高的机械强度和伸长率。

    Process for producing a polycarbonate
    4.
    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

    申请人： Keigo Nishihira ,  Shuji Tanaka ,  Katsumasa Harada ,  Ryoji Sugise ,  Akinori Shiotani ,  Katsutoshi Washio

    发明人： Keigo Nishihira ,  Shuji Tanaka ,  Katsumasa Harada ,  Ryoji Sugise ,  Akinori Shiotani ,  Katsutoshi Washio

    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。

    Method of producing biphenyltetracarboxylic esters
    6.
    发明授权
    Method of producing biphenyltetracarboxylic esters 失效
    联苯四羧酸酯的制备方法

    公开(公告)号：US4338456A

    公开(公告)日：1982-07-06

    申请号：US235744

    申请日：1981-02-18

    申请人： Hiroshi Itatani ,  Akinori Shiotani ,  Akiyoshi Yokota

    发明人： Hiroshi Itatani ,  Akinori Shiotani ,  Akiyoshi Yokota

    IPC分类号： B01J31/18 ,  B01J31/28 ,  C07C67/343

    CPC分类号： B01J31/28 ,  B01J31/1815 ,  B01J2231/4205 ,  B01J2531/824

    摘要： A biphenyltetracarboxylic tetraester, especially, 3,3',4,4'-biphenyltetracarboxylic tetraalkyl ester, is produced by bringing an orthophthalic diester, especially, orthophthalic dialkylester, into contact with a molecular oxygen-containing gas in the presence of a catalyst consisting of a mixture of a palladium salt with 2,2'-bipyridyl or a chelating reaction product of a palladium salt with 2,2'-bipyridyl, so as to promote oxidative coupling of the orthophthalic diester.

    摘要翻译： 联苯四羧酸四酯，特别是3,3'，4,4'-联苯四羧酸四烷基酯是通过使邻苯二甲酸二酯，特别是邻苯二甲酸二烷基酯在含有分子氧的气体的存在下，在由 钯盐与2,2'-联吡啶的混合物或钯盐与2,2'-联吡啶的螯合反应产物，以促进邻苯二甲酸二酯的氧化偶联。

    Method of producing biphenyltetracarboxylic esters
    8.
    发明授权
    Method of producing biphenyltetracarboxylic esters 失效
    联苯四羧酸酯的制备方法

    公开(公告)号：US4292435A

    公开(公告)日：1981-09-29

    申请号：US151818

    申请日：1980-05-21

    申请人： Hiroshi Itatani ,  Akinori Shiotani ,  Akiyoshi Yokota

    发明人： Hiroshi Itatani ,  Akinori Shiotani ,  Akiyoshi Yokota

    IPC分类号： B01J31/18 ,  B01J31/28 ,  C07C67/343

    CPC分类号： B01J31/183 ,  B01J31/1815 ,  B01J31/28 ,  B01J2231/4205 ,  B01J2531/824

    摘要： A biphenyltetracarboxylic tetraester, especially, 3,3',4,4'-biphenyltetracarboxylic tetraalkyl ester, is produced by oxidative coupling an orthophthalic diester, especially, orthophthalic dialkylester, in a molecular oxygen-containing atmosphere in the presence of a catalyst consisting of a mixture of a palladium salt with 1,10-phenanthroline and/or 2,2'-bipyridyl or a chelating reaction product of a palladium salt with 1,10-phenanthroline or 2,2'-bipyridyl.

    摘要翻译： 联苯四羧酸四酯，特别是3,3'，4,4'-联苯基四羧酸四烷基酯，是通过在含有分子氧的气氛中在邻苯二甲酸二酯，特别是邻苯二甲酸二烷基酯的存在下，在由 钯盐与1,10-菲咯啉和/或2,2'-联吡啶的混合物或钯盐与1,10-菲咯啉或2,2'-联吡啶的螯合反应产物。

    Process of production of 3,4,3',4'-substituted biphenyl compound
    9.
    发明授权
    Process of production of 3,4,3',4'-substituted biphenyl compound 失效
    制备3,4,3'，4'-取代的联苯二酚化合物的方法

    公开(公告)号：US5243067A

    公开(公告)日：1993-09-07

    申请号：US655361

    申请日：1991-02-20

    申请人： Akinori Shiotani ,  Michinori Suzuki ,  Fumio Matsuo

    发明人： Akinori Shiotani ,  Michinori Suzuki ,  Fumio Matsuo

    IPC分类号： B01J31/04 ,  B01J31/22 ,  B01J31/28 ,  C07B61/00 ,  C07C51/09 ,  C07C51/353 ,  C07C51/60 ,  C07C51/62 ,  C07C63/331 ,  C07C69/76

    CPC分类号： C07C63/331 ,  C07C51/09

    摘要： A 3,4,3',4'-substituted biphenyl compound represented by the general formula (II): ##STR1## wherein, one of R.sup.1 and R.sup.2 is a -CH.sub.3 group and the one other is a --COOR.sup.5 group, --COOH group, or --COCl group, and one of R.sup.3 and R.sup.4 is a -CH.sub.3 group and the other one is a --COOR.sup.5 group, --COOH group, or --COCl group, is produced by the steps of oxidatively coupling an o-toluic acid alkyl ester in the presence of a catalyst containing a mixture of palladium salts with 1,10-phenanthroline or .alpha.,.alpha.'-bipyridine, a chelating product of a palladium salt with 1,10-phenanthroline, or a chelating products of a palladium salt with .alpha.,.alpha.'-bipyridine, in an atmosphere containing molecular oxygen, to selectively produce a 3,4,3,',4'-substituted dimethyl biphenyl dicarboxylic acid dialkyl esters having a biphenyl ring structure; optionally converting this dialkyl ester compound to a corresponding dimethyl biphenyl dicarboxylic acid, and then optionally further converting this to a corresponding dimethyl biphenyl dicarboxylic acid dichloride.

    摘要翻译： PCT No.PCT / JP90 / 00537 371日期1991年2月20日 102（e）日期1991年2月20日PCT 1990年4月25日PCT PCT。 出版物WO91 / 02713 1991年3月7日。由通式（II）表示的3,4,3'，4'-取代的联苯化合物：其中，R 1和R 2中的一个是-CH 3基团， 另一个是-COOR 5基团，-COOH基团或-COCl基团，R3和R4之一是-CH3基团，另一个是-COOR5基团，-COOH基团或-COCl基团，由 在含有钯盐与1,10-菲咯啉或α，α'-联吡啶，钯盐与1,10-菲咯啉的螯合产物的混合物的催化剂存在下，将邻甲苯甲酸烷基酯氧化偶联的步骤， 菲咯啉或钯盐与α，α'-联吡啶在含有分子氧的气氛中的螯合产物，以选择性地制备具有联苯的3,4,3'，4'-取代的二甲基联苯二羧酸二烷基酯 环结构; 任选地将该二烷基酯化合物转化成相应的二甲基联苯二羧酸，然后任选进一步将其转化为相应的二甲基联苯二羧酸二氯化物。

    Method for producing biphenyltetracarboxylic esters
    10.
    发明授权
    Method for producing biphenyltetracarboxylic esters 失效
    联苯四羧酸酯的制备方法

    公开(公告)号：US4581469A

    公开(公告)日：1986-04-08

    申请号：US645606

    申请日：1984-08-29

    申请人： Hiroshi Itatani ,  Akinori Shiotani ,  Mikio Fujimoto

    发明人： Hiroshi Itatani ,  Akinori Shiotani ,  Mikio Fujimoto

    IPC分类号： C07C69/76 ,  C07C67/343

    CPC分类号： C07C67/343

    摘要： A biphenyltetracarboxylic ester, particularly, 3,3',4,4'-biphenyltetracarboxylic tetraester, is prepared in an increased yield by first oxidative coupling, at 140.degree. C. to 260.degree. C., an o-phthalic diester with a molecular oxygen-containing gas, for example, air, in the presence of a catalyst comprising predetermined amounts of a Pd salt, a basic bidentate ligand compound, and a Cu salt to convert a portion of the o-phthalic diester to the corresponding biphenyltetracarboxylic ester and by additionally oxidative coupling in one or more steps, in each step, the remaining portion of o-phthalic diester with a molecular oxygen-containing gas at 140.degree. C. to 260.degree. C. while controlling the composition of the catalyst to an extent such that the entire molar amount of the Pd salt is 0.0001 to 0.01 time that of the o-phthalic diester, the entire molar amount of the ligand compound is 0.5 to 4 times that of the Pd salt and the entire molar amount of the Cu salt is 0.01 to 5 times that of the Pd salt.

    摘要翻译： 联苯四羧酸酯，特别是3,3'，4,4'-联苯四羧酸四酯，通过首先在140℃至260℃的氧化偶联，具有分子氧的邻苯二甲酸二酯 在含有预定量的Pd盐，碱性二齿配位体化合物和Cu盐的催化剂存在下，将邻苯二甲酸二酯的一部分转化成相应的联苯四甲酸酯，并通过 在一个或多个步骤中，在每个步骤中，邻苯二甲酸二酯的剩余部分在140℃至260℃的分子氧气体中进一步氧化偶联，同时将催化剂的组成控制到使得 Pd盐的全部摩尔量为邻苯二甲酸二酯的0.0001〜0.01倍，配位化合物的全部摩尔量为Pd盐的0.5〜4倍，Cu盐的全部摩尔量为0.01 到5倍 Pd盐。