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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 9751999 B1

PDFFull Text
Date of Patent:
Sep. 05, 2017

Filed:

Apr. 26, 2016

Polarizing plate protective film, dope composition, method for manufacturing polarizing plate protective film, polarizing plate, and liquid crystal display device

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Katsumi Sasata, Kanagawa, JP;

Hajime Nakayama, Kanagawa, JP;

Shusuke Arita, Kanagawa, JP;

Yutaka Nozoe, Kanagawa, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorneys:

Edwards Neils LLC

Jean C. Edwards, Esq.

Primary Examiner:

Robert Harlan

Int. Cl.
CPC ...
C08J 5/18 (2006.01); B29C 41/02 (2006.01); B29C 55/00 (2006.01); C08L 33/12 (2006.01); C08F 220/14 (2006.01); G02B 5/30 (2006.01); G02B 1/14 (2015.01); B29C 41/00 (2006.01); B29C 55/14 (2006.01); B29C 69/00 (2006.01); B29D 7/01 (2006.01); G02F 1/1335 (2006.01); B29K 33/00 (2006.01); B29K 105/00 (2006.01); B29K 105/16 (2006.01);
U.S. Cl.
CPC ...
C08J 5/18 (2013.01); B29C 41/003 (2013.01); B29C 41/02 (2013.01); B29C 55/005 (2013.01); B29C 55/143 (2013.01); B29C 69/00 (2013.01); B29D 7/01 (2013.01); C08F 220/14 (2013.01); C08L 33/12 (2013.01); G02B 1/14 (2015.01); G02B 5/3033 (2013.01); B29K 2033/12 (2013.01); B29K 2105/0058 (2013.01); B29K 2105/16 (2013.01); B29K 2105/256 (2013.01); B29K 2995/0017 (2013.01); C08J 2333/12 (2013.01); G02F 1/133528 (2013.01);
Abstract

A polarizing plate protective film containing an acrylic resin, in which the acrylic resin includes a methyl methacrylate unit a, a mass fraction of an alkyl (meth)acrylate unit b other than methyl methacrylate is less than 5 mass %, a weight average molecular weight is 250,000 to 4,000,000, and a weight decreasing amount at the time of being heated at 140° C. for 1 hour is less than or equal to 0.5%, has excellent heat resistance and an excellent surface shape; a dope composition; a method for manufacturing a polarizing plate protective film; a polarizing plate; and a liquid crystal display device.

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