Pigments dispersions based on water and acrylate
AssigneeClariant Produkte (Deutschland) GmbH
InventorsAndreas Harz, Heidemarie Menzel, Hans-Tobias Macholdt, Michael Mueller
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Abstract
The invention relates to an aqueous pigment preparation containing an organic and/or inorganic pigment dispersed in an acrylate resin solution and a dispersion agent. The preparation is characterised in that the acrylate resin is a copolymer consisting essentially of between 50 and 80 mol % of monoalkenyl aromatic compounds and between 20 and 50 mol % of acrylates, and has an average molar mass Mv of between 1,000 and 50,000 g/mol, and in that the dispersion agent is a compound of formula (I): R—O—(CH2—CH2—O)m—CH2—COOM, wherein R is a C10-C20 alkyl radical or a C10-C20 alkenyl radical, m is a number between 1 and 15, and M is a monovalent cation.
Claims14
An aqueous pigment preparation, comprising an organic and/or inorganic pigment dispersed in an acrylate resin solution and dispersing aid, wherein the acrylate resin is a copolymer composed essentially from 50 to 80 mol % of monoalkenyl aromatics and from 20 to 50 mol % of acrylates and has an average molar mass Mv of between 1 000 and 50 000 g/mol and wherein the dispersing aid is a compound of the formula (I)
- R—O—(CH2—CH2—O)m—CH2—COOM (I)
- in which
- R is a C10-C20 alkyl radical or a C10-C20 alkenyl radical,
- m is a number from 1 to 15, and
- M is a monovalent cation.
Dependencies are inferred from the claim text.