公开(公告)号：US3923838A

公开(公告)日：1975-12-02

申请号：US41712273

申请日：1973-11-19

Applicant: BASF AG

Inventor： EILINGSFELD HEINZ ,  EISFELD WOLFGANG ,  PATSCH MANFRED ,  SCHAFFNER ERNST

IPC: C07D307/77 ,  C07C51/16 ,  C07C51/265 ,  C07C51/275 ,  C07C51/54 ,  C07C51/56 ,  C07C65/34 ,  C09B5/24 ,  C07D307/89 ,  C07C66/02

CPC classification number: C09B5/2418 ,  C07C51/16 ,  C07C51/265 ,  C07C51/275 ,  C07C51/54 ,  C07C51/56 ,  C07C65/34 ,  C07C66/02

Abstract: IN WHICH ONE X is chloro and the other X is hydrogen or each X is chloro; and WITH AIR OR OXYGEN OR WITH 10 TO 30% BY WEIGHT NITRIC ACID TO FORM THE CORRESPONDING CARBOXYLIC ACID FOLLOWED BY CYCLIZATION OF THE LATTER. 1-CHLOROANTHRAQUINONE-2,3-DICARBOXYLIC ANHYDRIDE OR 1,4-DICHLOROANTHRAQUINONE-2,3-DICARBOXYLIC ANHYDRIDE IS OBTAINED IN A GOOD YIELD. Each is a valuable dye intermediate.

A process for the production of an anthraquinone-2,3dicarboxylic anhydride bearing chlorine as a substituent in the 1-position or in the 1- and 4-positions by oxidation of a trimethyl compound of the formula:

Abstract translation: 通过氧化下式的三甲基化合物来生产在1-位或1-和4-位上带有氯作为取代基的蒽醌-2,3-二羧酸酐的方法：

公开(公告)号：US3655741A

公开(公告)日：1972-04-11

申请号：US3655741D

申请日：1970-06-23

Applicant: BASF AG

Inventor： STURM HANS JUERGEN ,  ARMBRUST HERBERT ,  NIENBURG HANS ,  EISFELD WOLFGANG

IPC: C07C51/31 ,  C07C65/20

CPC classification number: C07C51/313 ,  C07C65/34

Abstract: PRODUCTION OF O-BENZOYLBENZOIC ACID BY OXIDATION OF AN INDIAN WITH OXYGEN IN THE PRESENCE OF A CATALYST IN THE LIQUID PHASE. THE PRODUCT IS A STARTING MATERIAL FOR MANY SYNTHESES (SEE FOR EXAMPLE ULLMANNS ENCYKLOPADIE DER TECHNISCHEN CHEMIE, VOLUME 3, PAGES 660 ET SEQ.). IT IS OF PARTICULAR IMPORTANCE AS A STARTING MATERIAL FOR THE MANUFACTURE OF ANTHRAQUINONE.

公开(公告)号：CA944361A

公开(公告)日：1974-03-26

申请号：CA122590

申请日：1971-09-10

Applicant: BASF AG

Inventor： NIENBURG HANS-JUERGEN ,  EISFELD WOLFGANG ,  WACHE HARRO

IPC: C07C51/487

Abstract: 1353786 Purification of terephthalic acid BADISCHE ANILIN- & SODA-FABRIK AG 15 Sept 1971 [16 Sept 1970] 42921/71 Heading C2C A process for the purification of terephthalic acid from crude terephthalic acid containing a small amount of 4-carboxybenzaldehyde with or without other impurities comprises heating an aqueous mixture containing from 5 to 45% by weight of crude terephthalic acid and from 0À003 to 3% by weight of formic acid at a temperature of at least 230‹ C. in contact with a noble metal of Group VIII of the Periodic Table as catalyst, and thereafter the aqueous mixture is separated from the catalyst and cooled to cause solid terephthalic acid to separate out.

公开(公告)号：CA1191861A

公开(公告)日：1985-08-13

申请号：CA386207

申请日：1981-09-18

Applicant: BASF AG

Inventor： DISTELDORF WALTER ,  EISFELD WOLFGANG

IPC: C07C59/125 ,  B01J23/00 ,  B01J23/22 ,  B01J23/72 ,  B01J31/00 ,  B01J31/04 ,  C07B61/00 ,  C07C51/00 ,  C07C51/27 ,  C07C67/00

Abstract: PREPARATION OF 2-METHOXYALKANOIC ACIDS A process for the preparation of a 2-methoxy-alkanoic acid of 2 to 5 carbon atoms by oxidizing the corresponding 2-methoxyalkanol with nitric acid in the presence of vanadate ions as the catalyst, at below 90.degree.C, and isolating the 2-methoxyalkanoic acid by distillation.

公开(公告)号：CA1081254A

公开(公告)日：1980-07-08

申请号：CA270377

申请日：1977-01-21

Applicant: BASF AG

Inventor： SCHWIRTEN KURT ,  DISTELDORF WALTER ,  EISFELD WOLFGANG ,  KUMMER RUDOLF

IPC: C07C53/00 ,  B01J31/00 ,  C07B61/00 ,  C07C45/50 ,  C07C51/00 ,  C07C51/14 ,  C07C51/235 ,  C07C67/00 ,  C09F9/00 ,  C07C53/22

Abstract: Alkylcarboxylic acids CnH2n+1COOH (I) where n is from 2 to 18 are manufactured by hydroformylation of olefins CnH2n with carbon monoxide and hydrogen in the presence of rhodium catalysts at from 80 to 200.degree.C and from 80 to 600 bars, followed by oxidation of the aldehydes, first obtained, with oxygen or oxygen-containing gases, using a method wherein the reaction mixture resulting from the hydroformylation is directly subjected to the oxidative treatment, the carboxylic acids are distilled from the mixture thus obtained and the lowvolatility distillation residue, containing rhodium, is recycled, without additional treatment, to the hydroformylation stage.

公开(公告)号：CA877981A

公开(公告)日：1971-08-10

申请号：CA877981D

Applicant: BASF AG

Inventor： NIENBURG HANS J ,  EISFELD WOLFGANG ,  ARMBRUST HERBERT ,  STURM HANS J