Method of producing ultraviolet protective agent composition, and ultraviolet protective agent composition obtained thereby

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United States of America Patent

PATENT NO 11629063
APP PUB NO 20180111842A1
SERIAL NO

15559342

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Abstract

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A method of producing an ultraviolet protective agent composition, which has high transparency and excellent protection ability against a light of ultraviolet region of wavelengths of 200 to 420 nm, and an ultraviolet protective agent composition obtained by the production method are provided. The method of producing an ultraviolet protective agent composition includes at least step (a) of precipitating iron oxide microparticles by mixing with a microreactor an iron oxide raw material fluid containing at least Fe3+ ion, and an iron oxide precipitation fluid containing at least a basic substance; and step (b) of dispersing the above precipitated iron oxide microparticles in a dispersion medium to obtain iron oxide microparticle dispersion, wherein a haze value of the iron oxide microparticle dispersion is 2.0% or less, and a transmittance of the iron oxide microparticle dispersion for the light of the wavelengths of 200 to 420 nm is 2.0% or less.

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Patent Owner(s)

Patent OwnerAddress
M TECHNIQUE CO LTD2-16 TECHNOSTAGE 2-CHOME IZUMI-SHI OSAKA 5941144

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Enomura, Masakazu Izumi, JP 124 456
Honda, Daisuke Izumi, JP 90 300

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