DYE-BASED POLARIZING ELEMENT OR DYE-BASED POLARIZING PLATE

Title:

DYE-BASED POLARIZING ELEMENT OR DYE-BASED POLARIZING PLATE

Document Type and Number:

WIPO Patent Application WO/2015/046249

Kind Code:

A1

Abstract:

[Problem] To provide a dye-based polarizing element or a dye-based polarizing plate wherein there is no elution or precipitation of azo compounds even if moisture is retained due to a humidification process or a water immersion process. [Solution] Provided is a polarizing element comprising a polyvinyl alcohol-based resin film that includes at least one kind of azo compound and has undergone a stretching process, said polarizing element being characterized in that the film contains no more than 70 ppm of an amine compound. Alternately provided is a polarizing plate provided with the polarizing element.

More Like This:

JP3661238	TETRAKIS AZO COMPOUND AND ITS APPLICATION TO POLARIZING FILM
JP4662853	Azo compounds, polarizing films and polarizing plates containing them

Inventors:

MOCHIZUKI NORIAKI (JP)

Application Number:

PCT/JP2014/075286

Publication Date:

April 02, 2015

Filing Date:

September 24, 2014

Export Citation:

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Assignee:

NIPPON KAYAKU KK (JP)
POLATECHNO CO LTD (JP)

International Classes:

C09B45/28; G02B5/30; G02C7/10; G02C7/12; G02F1/1335

Domestic Patent References:

WO2013141236A1	2013-09-26
WO2012165222A1	2012-12-06

Foreign References:

JPH0718192A	1995-01-20
JPH03170561A	1991-07-24
JPH0317162A	1991-01-25
JPS5840357A	1983-03-09
JPH11216473A	1999-08-10

Attorney, Agent or Firm:

ONO Makoto et al. (JP)
Makoto Ono (JP)

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