AQUEOUS DISPERSION OF MICROPARTICLE HAVING NANOPARTICULATE PHASE AND COATING COMPOSITION CONTAINING THE SAME

Japanese Patent JP2009091589

A

To provide an efficient method for preparing a stable aqueous dispersion of microparticles comprising nanoparticulates.

The stable aqueous dispersion of microparticles comprising nanoparticulates is prepared by: (a) providing a plurality of nanoparticulates having an average particle size of 300 nm or less; (b) admixing the nanoparticulates with (1) one or more polymerizable ethylenically unsaturated monomers and/or (2) a mixture of one or more polymerizable unsaturated monomers with one or more polymers and/or (3) one or more polymers, to form an admixture; (c) subjecting the admixture to high stress shear conditions in the presence of an aqueous medium to particularize the admixture into microparticles; and (d) optionally, polymerizing the ethylenically unsaturated monomers under free radical polymerization conditions.

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FALER DENNIS L
KULFAN ANTHONY D
O'DWYER JAMES B
DECKER ELDON L
WOODWORTH BRIAN E
RARDON LORI S

JP2008312775A

April 30, 2009

December 08, 2008

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PPG IND OHIO INC

C09D17/00; C08F2/16; C08F2/44; C08F292/00; C08J3/05; C09C1/00; C09C1/22; C09C1/28; C09C1/36; C09C1/40; C09D4/00; C09D5/02; C09D5/44; C09D7/12; C09D7/80; C09D133/00; C09D161/32; C09D167/00; C09D171/00; C09D175/04; C09D183/00

Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita

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