Blue lakes comprising natural dyestuff

摘要

The invention relates to a blue lake comprising an insoluble carrier linked to a natural dyestuff in a weight by weight ratio natural dyestuff/blue lake going from 1:2 to 1:20, and to a process for manufacturing blue lakes comprising natural dyestuff comprising at least the following steps :- adjusting, in particular decreasing, the pH of a dispersion (D2) comprising at least a solvent, a natural dyestuff and an insoluble carrier, to a value comprised in a range going from 1 to 6, and- recover the solid particles of blue lakes which are obtained.