Patent ID: 7566361

Claim:
Colorant preparations comprising a) at least one dispersed, substantially water insoluble dye, b) water, c) at least one dispersant, d) a compound of formula I wherein R 1 and R 2 are independently selected from the group consisting of (CH 2 —CH 2 —O) n H and (CH(CH 3 )—CH 2 —O) n —H, wherein n is an integer from 1 to 4, wherein R 3 is selected from the group consisting of C 2 -C 6 -alkyl, C 6 -C 14 aryl, identically or differently substituted by hydrogen or C 1 -C 8 -alkyl, and CH 2 —O—R 4 , and wherein R 4 is C 1 -C 10 -alkyl.