公开(公告)号：US20040199010A1

公开(公告)日：2004-10-07

申请号：US10753881

申请日：2004-04-27

发明人： Hiroshi Mikami ,  Takeshi Sano ,  Makoto Nitta

IPC分类号： C07C053/38

CPC分类号： C07C63/331 ,  C07C51/42

摘要： There is provided biphenyltetracarboxylic dianhydride containing biphenyltetracarboxylic monoanhydride in an amount of not more than 0.4%. By using the biphenyltetracarboxylic dianhydride as a raw material, it is possible to produce polyimide or polyamic acid having an increased molecular weight.

摘要翻译： 提供含有不大于0.4％的联苯四羧酸单酐的联苯四羧酸二酐。 通过使用联苯四羧酸二酐作为原料，可以生产分子量增加的聚酰亚胺或聚酰胺酸。

公开(公告)号：US20040147778A1

公开(公告)日：2004-07-29

申请号：US10753556

申请日：2004-01-09

申请人： SOLVAY SOLEXIS S.p.A.

发明人： Giovanni Fontana ,  Walter Navarrini

IPC分类号： C07C053/38

CPC分类号： C08G65/007 ,  C07C51/62 ,  C07C59/135

摘要： A process for the synthesis of (per)fluorinated mono-functional carbonyl compounds having the following formula (I): F-A-RFnullBnullC(O)X1nullnull(I) wherein: X1nullF, CF3; A, B equal to or different from each other, are independently (per)fluoroalkylene or (per)fluorooxyalkylene groups; RF is nullORf1Onull wherein Rf1nullperfluoroalkylene or nullORf2, wherein Rf2 is a perfluorooxyalkylene chain; said process comprising the following steps: A) obtainment of the formula (II) mono-hypofluorite: FOnullCFX2-A-RFnullBnullC(O)X1nullnull(II) nullby partial fluorination with elemental fluorine of the carbonyl groups of the formula (III) compound: X2(O)C-A-RFnullBnullC(O)X1nullnull(III) nullin the presence of a formula MeFy catalyst, Me being an alkaline or alkaline-earth metal or Ag, ynull1 or 2; B) thermal decomposition of the compound (II) to give the compounds according to the following scheme: FOnullCFX2-A-RFnullBnullC(O)X1 (II) - - - nullF-A-RFnullBnullC(O)X1 (I)null(O)CFX2.

摘要翻译： 合成具有下式（I）的（全）氟化单官能羰基化合物的方法：F-A-RF-B-C（O）X1（I）其中：X1 = F，CF3; A，B彼此相同或不同，独立地为（全）氟亚烷基或（全）氟氧化烯基; RF是-OR f 10，其中Rf 1 =全氟亚烷基或-OR f 2，其中Rf 2是全氟氧化烯链; 所述方法包括以下步骤：A）通过用式（I）的羰基的元素氟部分氟化得到式（II）单次氟化物：FO-CFX2-A-RF-BC（O）X1（Ⅱ） III）化合物：X2（O）CA-RF-BC（O）X1（III）在式MeFy催化剂存在下，Me为碱金属或碱土金属或Ag，y = 1或2; B）化合物（II）的热分解，得到根据以下方案的化合物：FO-CFX2-A-RF-BC（O）X1（Ⅱ） - - - > FA-RF-BC（O）X1 （I）+（O）CFX 2。

公开(公告)号：US20010014759A1

公开(公告)日：2001-08-16

申请号：US09769797

申请日：2001-01-25

发明人： Albrecht Marhold ,  Jorn Stolting

IPC分类号： C07C051/58 ,  C07C053/38 ,  C07C055/36 ,  C07C057/64 ,  C07C059/00 ,  C07C061/00 ,  C07C062/00 ,  C07C063/00 ,  C07C065/00

CPC分类号： C07C51/60 ,  C07C51/62 ,  C07C63/70 ,  C07C63/72

摘要： 3,5-Bis(trifluoromethyl)benzoyl chlorides optionally substituted with fluorine or chlorine are advantageously prepared by converting 3,5-dimethylbenzoic acids optionally substituted with fluorine or chlorine into the corresponding acid chlorides; completely free-radically chlorinating said chlorides in the side chains, giving 3,5-bis(trichloromethyl)benzoyl chlorides optionally substituted by fluorine or chlorine; fluorinating the latter with anhydrous hydrogen fluoride and/or antimony pentafluoride, giving 3,5-bis(trifluoromethyl)benzoyl fluorides optionally substituted with fluorine or chlorine; and then reacting the 3,5-bis(trifluoromethyl)benzoyl fluorides with silicon tetrachloride in the presence of a further Lewis acid. Some of the 3,5-bis(trihalogenomethyl) and 3,5-dimethylbenzoyl halides which arise as intermediates are novel compounds.

摘要翻译： 任选被氟或氯取代的3,5-双（三氟甲基）苯甲酰氯有利地通过将任选被氟或氯取代的3,5-二甲基苯甲酸转化成相应的酰氯来制备; 完全自由基地氯化侧链中的氯化物，得到任选被氟或氯取代的3,5-双（三氯甲基）苯甲酰氯; 用无水氟化氢和/或五氟化锑氟化后者，得到任选被氟或氯取代的3,5-双（三氟甲基）苯甲酰氟; 然后在另外的路易斯酸的存在下使3,5-双（三氟甲基）苯甲酰氟与四氯化硅反应。 作为中间体产生的一些3,5-二（三卤代甲基）和3,5-二甲基苯甲酰基卤化物是新的化合物。