Dispersant composition

摘要

The invention relates to a composition containing a particulate solid, an organic medium, and a (meth)acrylic polymer. The invention further relates to novel compounds, and the use of the (meth)acrylic polymer as a dispersant, typically a pigment dispersant.

主权项

1. A composition comprising particulate solid, an organic medium, wherein the organic medium is a thermosetting resin chosen from unsaturated polyester resins made by
reacting of one or more diacids or anhydrides with one ore more diols, optionally in the presence of dicyclopentadiene (DCPD) as a co-reactant in a polyester chain or reacting products of bisphenol A diglycidyl ether with unsaturated carboxylic acids, and a (meth)acrylic polymer comprising repeat units represented by (a) to (c) and optionally present (d): (a) at least one mol % to 50 mol % of a repeat unit represented by formula (1): (b) 0.1 mol % to 20 mol % of a repeat unit represented by formula (2): (c) at least 25.5 mol % to 94.5 mol % of a repeat unit represented by formula (3):and
(d) optionally 0 mol % to 10 mol % of a repeat unit selected from the group consisting of styrene, vinyl toluene, an alkyl(meth)acrylate, 2-acrylamido-2-methylpropane sulphonic acid, and mixtures thereof,wherein each
R1 is independently hydrogen or methyl; X is independently >NR2; R2 is independently hydrogen or a hydrocarbyl group; Y is independently —(CHR3-CH2O)mR4; R3 is independently —H, —CH3 or —CH2CH3, or mixtures thereof; m is 3 to 45; R4 is independently a hydrocarbyl group containing 1 to 25 carbon atoms; and M+ is independently a metal cation, or an ammonium cation.