Coacervation process to encapsulate organic pigments that show improved weather fastness
AssigneeColorants International Ltd
InventorsGabriela CATANOIU, Simon ABEN, Jennifer SCHWARZ, Udo Franz HASELWANDER, Benjamin Rene Harald STOMPS
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Abstract
In a first aspect, the present invention relates to an encapsulated organic pigment comprising of an organic pigment as core material and a material capable of forming microcapsules as shell material, wherein the particle size of the encapsulated pigment (core-shell-product) is in the range from 50 nm to 500 μm and the particle size distribution D 90 is <100 μm.
Claims15
Encapsulated organic pigment comprising of an organic pigment as core material and a material capable of forming microcapsules as shell material, wherein the particle size of the encapsulated pigment (core-shell-product) is in the range from 50 nm to 500 μm and the particle size distribution D 90 is <100 μm.
Encapsulated organic pigment dispersion according to claim 8, wherein the solvent is selected from the group of esters of a mono or dicarboxylic acid, polyether polyol, butyl glycol, xylol, xylene, toluene, butanone, cyclohexanone, White Spirit, silicon oils, paraffin oils, linseed oil, coconut oil, isoparaffinic hydrocarbons, phthalate derivatives, mono or diacrylate derivatives, mixtures thereof and/or water.
Dependencies are inferred from the claim text.