PRODUCTION OF PIGMENT Russian patent published in 2012 - IPC C09B67/20 C09B67/08 C08L67/02 C09D167/00 

FIELD: chemistry.

SUBSTANCE: invention relates to pigment compositions suitable for use as admix pigments. Disclosed is a solid pigment composition containing a pigment and a dispersant resin. Said composition contains at least 35 wt % of at least one pigment and not more than 65 wt % dispersant resin of the total weight of the pigment and dispersant resin. The dispersant resin contains a backbone polymer chain formed by esters containing an electron-depleted C=C double bond and having at least one side hydrophilic group of polyalkylene oxide monoalkyl ether. Said dispersant resin contains 30-80 wt % alkylene oxide links and has average molecular weight from 1000 to 150000. The invention also discloses a method of preparing said pigment composition, a method of obtaining a coloured coating composition and use of said dispersant resin to prepare admix pigment compositions.

EFFECT: invention provides pigment compositions compatible with various diluents and binders, suitable for use as admix pigments to obtain paint which is stable even when using pigments which are hard to disperse and stabilise.

12 cl, 4 tbl, 8 ex