Method of producing ultraviolet radiation absorbent

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United States of America Patent

PATENT NO 7160936
APP PUB NO 20050202344A1
SERIAL NO

11100193

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Abstract

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An ultraviolet radiation absorbent for thermoplastic polymer materials such as polyethylene terephthalate or polycarbonate contains cyclic imino ester compound of a specified structure in an amount of over 99.5 weight % and less than 100 weight % and having an acid value in the range of 1.times.10.sup.-3 1 and/or a chlorine ion content in the range of 1.times.10.sup.-1 1.times.10.sup.3 ppm.

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Patent Owner(s)

Patent OwnerAddress
TAKEMOTO YUSHI KABUSHIKI KAISHAAICHI

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ichihashi, Tetsuo Sagamihara, JP 20 200
Osaki, Tatsuhiko Gamagori, JP 7 25

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges525311434524154635401 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8091 - 100100 +0255075100125150175200225250275300325350375400425450475500525550575

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