METHOD OF PRODUCING DYE WITH STARCH COMPONENT Russian patent published in 2016 - IPC C09B69/10 C08B31/00 C08L3/02 C08L3/10 D06P1/46 D21H19/38 D21H19/54 

FIELD: pulp and paper industry.

SUBSTANCE: invention relates to production of a dye with a starch component, which can be used in pulp and paper industry. Method of producing a dye with a starch component includes production of the starch component from a group of native starch or modified starch and its further reaction with an organic dye using mechanical mixing with the weight ratio of 1:1 or 1:2 respectively or adding 15-20 wt% of the dye to 5-10 % of the starch component suspension after correcting pH with subsequent spray drying. Dye is selected from any class of organic dyes.

EFFECT: obtained starch-containing dye has improved adhesion properties and improved consumer properties due to providing simultaneous colouring in a wide range of colors and surface glueing of the paper.

1 cl, 4 ex