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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8877850 B1

PDFFull Text
Date of Patent:
Nov. 04, 2014

Filed:

Jun. 18, 2007

Light-diffusing polycarbonate resin composition and light-diffusing plate

Applicants:

Masami Kogure, Ichihara, JP;

Hiroshi Kawato, Ichihara, JP;

Inventors:

Masami Kogure, Ichihara, JP;

Hiroshi Kawato, Ichihara, JP;

Assignee:

Idemitsu Kosan Co., Ltd., Tokyo, JP;

Attorney:

Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Hui Chin

Int. Cl.
CPC ...
C08K 3/40 (2006.01); G02B 5/02 (2006.01); C08K 5/10 (2006.01); C08L 69/00 (2006.01); C08K 5/00 (2006.01); C08L 83/04 (2006.01); C08K 3/36 (2006.01); C08K 5/103 (2006.01); C08L 33/12 (2006.01); C08K 7/04 (2006.01); C08K 5/20 (2006.01); C08K 7/10 (2006.01); C08K 7/14 (2006.01); C08L 33/08 (2006.01);
U.S. Cl.
CPC ...
G02B 5/0278 (2013.01); C08K 5/10 (2013.01); C08L 83/04 (2013.01); C08L 2205/22 (2013.01); C08K 3/36 (2013.01); G02B 5/0242 (2013.01); C08K 5/103 (2013.01); C08L 33/12 (2013.01); C08K 7/04 (2013.01); C08K 5/20 (2013.01); C08L 69/00 (2013.01); C08K 7/10 (2013.01); C08K 5/005 (2013.01); C08K 7/14 (2013.01); C08L 33/08 (2013.01);
Abstract

A polycarbonate-base light-diffusing resin composition contains: (A) 100 parts by mass of an aromatic polycarbonate resin; (B) 0.01 to 10 parts by mass of a light diffusing agent; (C) 0.05 to 5 parts by mass of a light resistant agent, the light resistant agent being one or more light resistant agent selected from a malonate-base compound, an oxalylanilide-base compound, a benzotriazole-base compound and an acrylic resin having a side chain of a benzotriazole-base skeleton; and 0.01 to 1 parts by mass of an ester compound of fatty acid and multivalent alcohol. By molding the composition by injection molding or the like, a light diffusing plate is obtained.

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