Pigment paste prepn. - comprises aryl-para-rosaniline:sulphonic acid, polyester-based oily alkyd resin, hydrocarbon resin, flush-aiding component etc.

摘要

A pigment paste prepn. comprises a) 5-50 wt.% of one or more pigments of formula (I) in which R1-R3 are independently H, a halogen, NO2, 1-3C alkyl, or alkoxy; b) at least one oily alkyd resin based on a polyester of oil content 70-80 wt.%; c) at least one hydrocarbon resin of average mol.wt. 600-1700 or at least one natural ester resin based on opt. modified, natural resin acids and mono- or multivalent 1-20C alcohols, where the wt. ratio of b):c) is 1:3-3:1; d) at least one flush-aiding material based on a condensn. prod.of a prim., sec. or tert. aliphatic amine or of a quat. ammonium cpd. with a polyester derived from a monobasic aliphatic hydroxy carboxylic acid opt. in the presence of a dye adduct of a similar polyester, and e) a high boiling mineral oil. DVANTAGE - Homogeneous, pumpable pastes are obtd. of enhanced storage stability, having reduced viscosity and thixotropy. The pressure technique properties are not negatively influenced.