Preparation of high concentration dispersions of...

Details Preparation of high concentration dispersions of... Preparation of high concentration dispersions of...

C - Chemistry, Metallurgy

08

L

400/5168

C08L 57/00 (2006.01) C08L 51/00 (2006.01)

Patent

CA 1092271

ABSTRACT Crosslinked acrylic polymer microparticles having a particle size of from 0.1 to 10 microns are produced in relatively high con- centrations by a method comprising the free radical addition copolymeri- zation of at least one ethylenically-unsaturated monomer with an alpha, beta-ethylenically unsaturated monocarboxylic acid and a crosslinking monomer selected from the group consisting of epoxy group-containing compounds, or a mixture of alkylenimine and organoalkoxysilane in the presence of a dispersion stabilizer and a dispersing liquid in which the cross-linked polymer particles are insoluble. These crosslinked polymeric microparticles can be blended with various resins to produce compositions having improved application characteristics as well as other desirable properties.

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