PREPARATION OF AN AQUEOUS DISPERSION OF OCCLUDED POLYMER PARTICLES

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United States of America Patent

APP PUB NO 20230052817A1
SERIAL NO

17785072

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Abstract

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The present invention relates to a process for preparing an aqueous dispersion of multiphase occluded polymer particles comprising the steps of a) contacting, under emulsion polymerization conditions, first monomers and a chain transfer agent to form an aqueous dispersion of first polymer particles having a Tg in the range of from −30° C. to 30° C.; then b) contacting the aqueous dispersion of first polymer particles with a second monomer under emulsion polymerization conditions to form an aqueous dispersion of second polymer particles occluded within the first polymer particles, wherein the first monomers a phosphorus acid monomer or a salt thereof; and the second monomer comprises at least 90 weight percent methyl methacrylate. The aqueous dispersion of occluded polymer particles arising from the process of the present invention is useful in a formulation that can be used to prepare a water-resistant blister free LASD coating.

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Patent Owner(s)

Patent OwnerAddress
DOW GLOBAL TECHNOLOGIES LLCMIDLAND MI

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bohling, James C Lansdale, US 86 157
Gimbal, Justin Warminster, US 4 0
Robertson, Ian D Collegeville, US 9 15

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