Filler for powder coating material and powder coating composition containing the same

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United States of America Patent

PATENT NO 8138253
APP PUB NO 20090227720A1
SERIAL NO

11991385

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A filler for powder coating materials is provided, which comprises inorganic parties having a Mohs hardness of 1 to 4 and satisfying the following particle size distribution of the following relationships (1) to (5):

description='In-line Formulae' end='lead'2≦A≦30  (1);description='In-line Formulae' end='tail'

    Cumulative 50 vol. % diameter (median diameter) determined by Microtrac FRA [μm];0≦B≦35  (2);Cumulative undersize for one-half the cumulative 50 vol. % diameter (median diameter) determined by Microtrac FRA [vol. %];1≦C≦25  (3);Value obtained by dividing cumulative 90 vol. % diameter determined by Microtrac FRA by cumulative 10 vol. % diameter [-];1≦D≦6  (4);Value obtained by dividing cumulative 75 vol. % diameter determined by Microtrac FRA by cumulative 25 vol. % diameter [-]; andE≦100  (5);Maximum particle diameter in particle-diameter fraction frequency distribution determined by Microtrac FRA [μm].

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Patent Owner(s)

Patent OwnerAddress
MARUO CALCIUM COMPANY LIMITED1455 NISHIOKA UOZUMI-CHO AKASHI-SHI HYOGO 674-0084

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Maeba, Takeshi Hyogo, JP 2 3
Sakai, Takanobu Hyogo, JP 5 94
Uto, Nariatsu Hyogo, JP 2 2

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