Title:
MICROPARTICLE, PROCESS FOR PRODUCING MICROPARTICLE, AND, LOADED WITH THE MICROPARTICLE, RESIN COMPOSITION AND OPTICAL FILM
Document Type and Number:
WIPO Patent Application WO/2008/023648
Kind Code:
A1
Abstract:
Microparticles having the content of coarse particles exceeding the average particle diameter reduced to a low level; a process for producing such microparticles; and a resin composition containing the microparticles. The microparticles are characterized in that the content of coarse particles with a diameter of twice or more the average particle diameter is 1000 particles/0.5g or less. The process for producing the microparticles comprises the steps of wet classification of a microparticle dispersion liquid of 0.5 to 50 mass% solid content and 0.5 to 20 mass B-viscosity; drying and pulverization of the microparticles after the wet classification to thereby obtain powdery microparticles of 0.05 to 2 mass% water content; and dry classification of the powdery microparticles.
Inventors:
SHIMIZU, Kenji (5-8, NishiotabichoSuita-sh, Osaka 12, 5648512, JP)
清水 健次 (〒12 大阪府吹田市西御旅町５番８号 株式会社日本触媒内 Osaka, 5648512, JP)
TOMINAGA, Miwako (5-8, NishiotabichoSuita-sh, Osaka 12, 5648512, JP)
冨永 美和子 (〒12 大阪府吹田市西御旅町５番８号 株式会社日本触媒内 Osaka, 5648512, JP)
清水 健次 (〒12 大阪府吹田市西御旅町５番８号 株式会社日本触媒内 Osaka, 5648512, JP)
TOMINAGA, Miwako (5-8, NishiotabichoSuita-sh, Osaka 12, 5648512, JP)
冨永 美和子 (〒12 大阪府吹田市西御旅町５番８号 株式会社日本触媒内 Osaka, 5648512, JP)
Application Number:
JP2007/066053
Publication Date:
February 28, 2008
Filing Date:
August 17, 2007
Export Citation:
Assignee:
NIPPON SHOKUBAI CO., LTD. (1-1 Koraibashi 4-chome, Chuo-ku Osaka-shi Osaka, 43, 5410043, JP)
株式会社日本触媒 (〒43 大阪府大阪市中央区高麗橋４丁目１番１号 Osaka, 5410043, JP)
SHIMIZU, Kenji (5-8, NishiotabichoSuita-sh, Osaka 12, 5648512, JP)
清水 健次 (〒12 大阪府吹田市西御旅町５番８号 株式会社日本触媒内 Osaka, 5648512, JP)
TOMINAGA, Miwako (5-8, NishiotabichoSuita-sh, Osaka 12, 5648512, JP)
株式会社日本触媒 (〒43 大阪府大阪市中央区高麗橋４丁目１番１号 Osaka, 5410043, JP)
SHIMIZU, Kenji (5-8, NishiotabichoSuita-sh, Osaka 12, 5648512, JP)
清水 健次 (〒12 大阪府吹田市西御旅町５番８号 株式会社日本触媒内 Osaka, 5648512, JP)
TOMINAGA, Miwako (5-8, NishiotabichoSuita-sh, Osaka 12, 5648512, JP)
International Classes:
C08J3/12; B01J19/00; B03B5/00; B03B7/00; B07B4/00; B07B7/00; C08J3/12; B01J19/00; B03B5/00; B03B7/00; B07B4/00; B07B7/00
Attorney, Agent or Firm:
UEKI, Kyuichi et al. (Fujita-Toyobo Building 9th floor, 1-16 Dojima 2-chome, Kita-ku, Osaka-sh, Osaka 03, 5300003, JP)
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