AQUEOUS DISPERSION OF HYDROPHOBICALLY MODIFIED PIGMENT PARTICLES

Canada Patent

PATENT NO 2936403
APP PUB NO CA-2936403-A1
SERIAL NO

2936403

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Abstract

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The present invention relates to a composition comprising a) a stable aqueous dispersion of inorganic pigment particles hydrophobically modified with covalently bonded polysiloxane or silyl groups; and b) a polymeric anionic dispersant; wherein the hydrophobically modified inorganic pigment particles have an average particle size in the range of from 200 nm to 10 µm, and the solids content of the hydrophobically modified inorganic pigment particles is from 10 to 80 weight percent, based on the weight of inorganic pigment particles and water. The composition of the present invention provides a way to improve water resistance in coatings formulations.

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Patent Owner(s)

Patent OwnerAddress
DOW GLOBAL TECHNOLOGIES LLCUSMIDLAND MI 48674

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Inventor(s)

Inventor Name Address
BOHLING JAMES CHARLES LANSDALE PA 19446
KATZ ALEXANDER RICHMOND CA
VAN DYK ANTONY COLLEGEVILLE PA 19426
JANKOLOVITS JOSEPH MILFORD CT
RADKE CLAYTON J BERKELEY CA CALIFORNIA 94720
ROPER JOHN A MIDLAND MICHIGAN 48674

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