DYEING COMPOSITIONS WITH LOW CONTENT OF VOLATILE ORGANIC COMPOUNDS (VOC) Russian patent published in 2015 - IPC C09D17/00 C09D7/02 C09D7/12 C09D11/03 C09B67/00 B01F15/04 

FIELD: chemistry.

SUBSTANCE: invention relates to aqueous liquid dyeing composition, which contains not more than 50 g/l of volatile organic compounds and is suitable for dyeing architectural water-based coatings or coatings based on organic solvents and basic dyes. Composition contains, counted per the total composition weight i) from 2 to 22% of non-volatile organic liquid with vapour pressure not higher than 1.3 n/m² at 25°C, ii) from 2 to 13% of stabilising substance, iii) from 4 to 77% of colour pigment, iv) from 0 to 8% of clay with modified rheological properties, v) from 0 to 20% of filling agent. Ratio the total weight iii)+iv)+v):the total weight i)+ii) constitutes from 0.8 to 2.75:1, and the total weight of non-volatile organic liquid i) and stabilising substance ii) constitutes not more than 28%, and the total weight of clay with modified rheological properties iv) and filling agent v) constitutes, at least, 2%, when quantity of colour pigment constitutes less than 51%. Composition for architectural coatings, containing or consisting of dyeing composition and basic dye, colouration scheme and method for manufacturing architectural coating under conditions of trade enterprise are also described.

EFFECT: obtaining dyeing compositions, which do not clog nozzles in the process of applying composition, which after drying forms stable coating, with dyeing composition being in fact free of VOC.

18 cl, 4 tbl, 4 ex