| abstract |
a) o,p' : o, o'=65: 35 oder b) o,p' : o, o' : o,m' = 27 : 13 : 60 oder c) o,p' : o,m' = 60 : 40 enthalten. The invention relates to compound mixtures, the compounds of the formula in the approximate ratio a) o, p ': o, o' = 65: 35 or b) o, p ': o, o': o, m '= 27: 13: 60 or c) o, p ': o, m' = 60:40 included. n n n The mixtures according to the invention are outstandingly suitable for the optical brightening of, in particular, synthetic polyesters. |