公开(公告)号：DE4232558A1

公开(公告)日：1994-03-31

申请号：DE4232558

申请日：1992-09-29

Applicant: BASF AG

Inventor： LANGE ARNO DR ,  BACH VOLKER DR ,  GRUND CLEMENS DR ,  REICHELT HELMUT DR ,  RICHTER PAUL DR

IPC: C09B67/22 ,  C09B67/38 ,  D06P1/18 ,  D06P3/54

Abstract: Dye mixtures comprising a) an azo dye of the formula I in which Hal is chlorine or bromine, b) the azo dye of the formula II in which L is allyl or may otherwise be hydrogen, and c) an azo dye of the formula III and/or IV in which R is nitro or substituted or unsubstituted C1-C4-alkylsulphonyl, R and R are hydrogen, chlorine or bromine, R and R are hydrogen or chlorine, R and R are hydrogen, phenyl or substituted or unsubstituted C1-C4-alkyl, X is hydrogen, hydroxyl, methoxy, acetylamino or nitro, X , X , X and X are hydrogen, methyl or methoxy, and X is hydroxyl, 2-hydroxyethoxy, formyl or methoxycarbonylamino, dye formulations comprising the new dye mixtures, and the use of the new dye mixtures for dyeing or printing polyesters in textile form.

公开(公告)号：DE4227505A1

公开(公告)日：1994-02-24

申请号：DE4227505

申请日：1992-08-20

Applicant: BASF AG

Inventor： REICHELT HELMUT DR ,  GRUND CLEMENS DR

IPC: C07C253/30 ,  C07C255/19

Abstract: Process for the preparation of C4-C10-alkyl cyanoacetates by reacting cyanoacetic acid with C4-C10-alkanols at a temperature of 35 to 150 DEG C and a pressure of 70 to 1013 mbar in the presence of catalytic amounts of an acid with simultaneous removal of a C4-C10-alkanol/water azeotrope.