Aqueous dispersion of a black iron oxide and a liquid cosmetic comprising the same

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United States of America

PATENT NO 12168064
APP PUB NO 20220133605A1
SERIAL NO

17430970

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Abstract

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One of the purposes of the present invention is to provide an aqueous dispersion for cosmetics comprising black iron oxide, which has excellent dispersion stability, scarcely causes clogging to a pen type container for a long period of time, achieves good color development as a liquid cosmetic, and is capable of imparting the resulting film with water resistance. The other purpose of the present invention is to provide a liquid cosmetic comprising the aqueous dispersion. The present invention provides an aqueous dispersion comprising a black iron oxide, water and hydroxypropylmethyl cellulose phthalate, wherein the black iron oxide is surface-silylated with an alkyltriethoxysilane. The present invention further provides a method for preparing an aqueous dispersion containing the black iron oxide having a surface-silylated with an alkyltriethoxysilane.

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Patent Owner(s)

Patent OwnerAddress
NISSIN CHEMICAL INDUSTRY CO LTDFUKUI 915-0802
JO COSMETICS CO LTD11-14 OMORI-NISHI 3-CHOME OTA-KU TOKYO 1430015 ?1430015

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kato, Shogo Tokyo, JP 26 229
Watanabe, Kentaro Echizen, JP 132 979

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