-
公开(公告)号：US4430181A
公开(公告)日：1984-02-07
申请号：US436108
申请日：1982-10-22
申请人： Rainer Neumann , Karl Morgenstern , Karl-August Lipper , Friedrich Bruhne , Walter Bockmann , Clemens Casper , Siegfried Zingel
发明人： Rainer Neumann , Karl Morgenstern , Karl-August Lipper , Friedrich Bruhne , Walter Bockmann , Clemens Casper , Siegfried Zingel
CPC分类号： C07C51/60
摘要： Benzoyl chloride is prepared by a process in which the high-boiling residue obtained in the catalytic oxidation of toluene with oxygen or oxygen-containing gases in the liquid phase is largely freed of heavy metal salts which are present, and is then chlorinated at elevated temperatures, optionally under the action of light, and the benzoyl chloride is then separated off.
摘要翻译： 通过一种方法制备苯甲酰氯，其中在液相中用氧或含氧气体催化氧化甲苯获得的高沸点残余物大部分不含存在的重金属盐，然后在高温下氯化 ，任选地在光的作用下，然后分离出苯甲酰氯。
-
2.发明授权
公开(公告)号：US4528146A
公开(公告)日：1985-07-09
申请号：US493905
申请日：1983-05-12
CPC分类号： C07C51/60
摘要： An improved process for the preparation of terephthaloyl and isophthaloyl dichlorides by chlorination of dimethyl terephthalate and isophthalate with chlorine gas at temperatures from 100.degree.-250.degree. C., optionally in the presence of light and/or catalysts promoting side-chain chlorination of aromatic compounds, according to which 20 to 200% by weight, relative to the weight of dimethyl terephthalate and/or isophthalate, of terephthaloyl and/or isophthaloyl dichloride are added to the dimethyl terephthalate and/or isophthalate for the chlorination.
摘要翻译： 一种改进的制备对苯二甲酰和间苯二酰二氯的方法，通过在100-250℃的温度下氯化对苯二甲酸二甲酯和间苯二甲酸二甲酯，任选在促进芳族化合物的侧链氯化的光和/或催化剂的存在下 ，相对于对苯二甲酸二甲酯和/或间苯二甲酸二甲酯的对苯二甲酰和/或间苯二酰二氯的重量相对于对苯二甲酸酯和/或间苯二甲酸酯的重量为20〜200重量％进行氯化。
-
3.发明授权
公开(公告)号：US4294777A
公开(公告)日：1981-10-13
申请号：US85553
申请日：1979-10-17
CPC分类号： C07C51/64
摘要： A process for color stabilizing aromatic carboxylic acid chloride against discoloration which comprises introducing into a composition containing an aromatic carboxylic acid chloride 0.001 to 2% by weight of a color stabilizer, based upon the amount of said aromatic carboxylic acid chloride. The use of aldehydes, ketones, olefins, phosphorus and arsenic containing compounds are contemplated as stabilizer.
摘要翻译： 一种颜色稳定芳香族羧酸氯化物对变色的方法，其包括基于所述芳族羧酸氯化物的量将含有0.001-2重量％颜色稳定剂的芳族羧酸氯化物的组合物引入。 考虑使用醛，酮，烯烃，含磷和砷的化合物作为稳定剂。
-
公开(公告)号：US4276231A
公开(公告)日：1981-06-30
申请号：US071805
申请日：1979-09-04
IPC分类号： C07C63/04 , B01J21/00 , B01J31/00 , C07B61/00 , C07C51/00 , C07C51/58 , C07C63/10 , C07C63/70 , C07C67/00 , C07C205/58 , C07C51/60
CPC分类号： C07C51/58
摘要： A process for the preparation of optionally substituted benzoyl chloride from optionally substituted benzotrichloride at elevated temperature in the presence of a catalyst is described wherein optionally substituted benzotrichloride or a mixture thereof with optionally substituted benzoyl chloride is reacted with an excess of 1 to 20 mol percent of optionally substituted benzoic acid and/or water and the hydrogen chloride-containing off-gases formed during the reaction are washed with optionally substituted benzotrichloride or the mixture of optionally substituted benzotrichloride and optionally substituted benzoyl chloride.
摘要翻译： 描述了在催化剂存在下，在升高的温度下从任选取代的苯并氯化物制备任选取代的苯甲酰氯的方法，其中任选取代的三氯甲烷或其与任选取代的苯甲酰氯的混合物与过量的1至20摩尔％ 任选取代的苯甲酸和/或水，并且在反应期间形成的含氯化氢的废气用任选取代的三氯甲烷或任选取代的苯并三氯化物和任选取代的苯甲酰氯的混合物洗涤。
-
公开(公告)号：US4229379A
公开(公告)日：1980-10-21
申请号：US958240
申请日：1978-11-06
摘要： An improved process for the preparation of benzaldehyde by hydrolysis of benzal chloride wherein hydrolysis is carried out at an elevated temperature in the presence of an excess of aqueous hydrochloric acid and in the absence of another catalyst.
摘要翻译： 通过苯甲酰氯的水解制备苯甲醛的改进方法，其中在过量的盐酸水溶液的存在下和不存在另外的催化剂的情况下，在升高的温度下进行水解。
-
-
-
-
搜索结果
5 条记录 (耗时 0.023 秒)