公开(公告)号：US3579291A

公开(公告)日：1971-05-18

申请号：US3579291D

申请日：1969-12-03

Applicant: BASF AG

Inventor： LUDWIG WINFRIED ,  OSTER RUDOLF ,  URBACH HANS

IPC: B01D47/00 ,  B01D53/54 ,  B01D47/02

CPC classification number: B01D47/00 ,  B01D53/54

Abstract: A PROCESS FOR REMOVING PHENYL AZIDE FROM GAS BY PASSING THE GAS CONTAINING PHENYL AZIDE THROUGH 50 TO 100WT. PERCENT SULFURIC ACID.

公开(公告)号：BR8200418A

公开(公告)日：1982-11-30

申请号：BR8200418

申请日：1982-01-26

Applicant: BASF AG

Inventor： TONNE PETER ,  LUDWIG WINFRIED ,  KILPPER GERHARD ,  GRIMMER JOHANNES

IPC: C07C231/00 ,  C07C233/00 ,  C07C103/76

Abstract: Anthranilic acid amides are prepared by mixing phthalamic acid with a caustic alkali solution, a catalyst and a hypohalite, allowing the mixture to stand for from 1 to 1,000 seconds, then introducing the amine and thereafter addig acid until the pH of the mixture is from 6 to 8. The anthranilic acid amides obtainable by the process of the invention are valuable starting materials for the preparation of dyes, scents and pesticides.

公开(公告)号：FR1480620A

公开(公告)日：1967-05-12

申请号：FR62232

申请日：1966-05-20

Applicant: BASF AG

Inventor： WALLIS ALBRECHT ,  NIENBURG HANS ,  WALZ HELMUT ,  LUDWIG WINFRIED

IPC: C07C63/38 ,  C07C69/76

公开(公告)号：GB1118425A

公开(公告)日：1968-07-03

申请号：GB2231066

申请日：1966-05-19

Applicant: BASF AG

Inventor： WALLIS ALBRECHT ,  NIENBURG HANS ,  WALZ HELMUT ,  LUDWIG WINFRIED

IPC: C07C63/38 ,  C07C69/76

Abstract: The invention relates to the production of dialkyl esters of naphthalene-2,6-dicarboxylic acid in which an acid alkali metal, e.g. potassium salt of naphthalene-2,6-dicarboxylic acid is heated with a primary alkanol, e.g. containing 1 to 4 carbon atoms to a temperature of from 200 DEG to 350 DEG C. and the reaction mixture is separated into the neutral ester of naphthalene-2,6-dicarboxylic acid and the neutral alkali salt of naphthalene-2,6-dicarboxylic acid.