公开(公告)号：DE2507188A1

公开(公告)日：1976-09-02

申请号：DE2507188

申请日：1975-02-20

Applicant: BASF AG

Inventor： WAECHTER RUDOLF DIPL CHEM DR ,  RIEDEL GUENTHER DIPL CHEM DR ,  FINKENAUER HELMUT DIPL CHEM ,  ANDREE FRANZ DIPL CHEM ,  ANDREE FRANZ DIPL CHEM DR ,  MAYER HANS-JUERGEN ING GRAD

IPC: C09B67/00

Abstract: Powder dye compsns. contg. (a) one or more basic or metal complex dyes, and (b) 0.5-20 wt. % w.r.t. (a) of (A) one or more alkanol amines of formula HO-A-NR1R2 (in which -A-OH is beta-hydroxyethyl, beta-hydroxypropyl or gamma-hydroxypropyl; R1 and R2 are H, -A-OH, beta-aminoethyl, 1-4C alkyl or together form a morpholine, piperazine, N-methyl- or N-ethyl-piperazine or hexamethylene imine gp.; R1 may also be phenyl) of (B) a mixt. of (A) with high-boiling organic liquids which do not dissolve the dye, are useful in the prepn. of paints, inks, ball-point pastes, hectograph matls., etc. Dusting of the dyes is prevented, without causing corrosion of metal parts, esp. of iron.

公开(公告)号：DE2659698A1

公开(公告)日：1978-07-13

申请号：DE2659698

申请日：1976-12-31

Applicant: BASF AG

Inventor： PATSCH MANFRED DIPL CHEM DR ,  ANDREE FRANZ DIPL CHEM DR

IPC: C07D311/16 ,  C07D311/68

Abstract: Prepn. of coumarin derivs. of formula (I) comprises reacting aminophenols (II) and keto-esters B.CO.CH2COOX (III) in presence of TiCl4 catalyst. In the formulae B is H, 1-4C alkyl or phenyl; R1 and R2 are 1-4C alkyl opt. substd. by OH or CN. R3 is H, 1-3C alkyl, Cl or Br. X is 1-4C alkyl. (I) are optical brighteners. This process gives higher yields, shorter reaction times and purer prods. than the method of DT 964862 (where (I) are incorrectly said to be oxyquinolones). In an example, reaction of 3-ethylamino-p-cresol and ethyl acetoacetate gave 4,6-dimethyl-7-ethylaminocoumarin.