Method for producing composite resin particle dispersion, method for producing pressure-sensitive adhesive, method for producing pressure-responsive resin, method for producing toner for electrostatic charge image development, and composite resin particles

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United States of America Patent

PATENT NO 11781044
APP PUB NO 20220306906A1
SERIAL NO

17506101

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Abstract

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A method for producing a composite resin particle dispersion includes: performing polymerization A by polymerizing a styrene compound and a vinyl monomer other than the styrene compound to form a styrene-based resin; performing polymerization B by polymerizing a (meth)acrylic acid ester compound in the presence of the styrene-based resin to form intermediate resin particles containing the styrene-based resin and a (meth)acrylic acid ester-based resin; and performing polymerization C by polymerizing a styrene compound and a vinyl monomer other than the styrene compound in the presence of the intermediate resin particles to form composite resin particles. The mass ratio of the styrene-based resin to the (meth)acrylic acid ester-based resin in the composite resin particles is from 80:20 to 20:80. A difference between the lowest glass transition temperature and the highest glass transition temperature in the composite resin particles is 30° C. or more.

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Patent Owner(s)

Patent OwnerAddress
FUJIFILM BUSINESS INNOVATION CORPMINATO-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Inoue, Satoshi Kanagawa, JP 511 10547
Ishizuka, Takahiro Kanagawa, JP 89 429
Kashima, Yasunobu Kanagawa, JP 50 110
Yamanaka, Kiyohiro Kanagawa, JP 26 50
Yamasaki, Sumiaki Kanagawa, JP 99 603

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