Title:
POLYVINYL ALCOHOL FILM AND PRODUCTION METHOD FOR POLARIZATION FILM USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/138286
Kind Code:
A1
Abstract:
This polyvinyl alcohol film contains a polyvinyl alcohol (A), an anionic surfactant (B) having 9-30 carbon atoms, and an electrolyte (C) having 0-8 carbon atoms, and is characterized in that the contained amount of the anionic surfactant (B) is 0.04-0.40 parts by mass with respect to 100 parts by mass of the polyvinyl alcohol (A), and the contained amount of the electrolyte (C) is 0.04-0.40 parts by mass with respect to 100 parts by mass of polyvinyl alcohol (A). As a result, provided are: a PVA film having less optical defects and activating agent aggregations, a low haze value, and good release properties, and having excellent polarization performance when processed into a polarization film; and a method for producing a polarization film using the PVA film.
Inventors:
TAKATORI YOHEI (JP)
HAMASHIMA ISAO (JP)
NAKAI SHINJI (JP)
HAMASHIMA ISAO (JP)
NAKAI SHINJI (JP)
Application Number:
PCT/JP2019/051114
Publication Date:
July 02, 2020
Filing Date:
December 26, 2019
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
B29C55/02; G02B5/30; C08K3/30; C08K3/32; C08K5/098; C08L29/04; B29L7/00; B29L11/00
Domestic Patent References:
| WO2016039303A1 | 2016-03-17 | |||
| WO2020027020A1 | 2020-02-06 |
Foreign References:
| JP2006219637A | 2006-08-24 | |||
| US20150057405A1 | 2015-02-26 | |||
| JP2007279751A | 2007-10-25 | |||
| JP2011038073A | 2011-02-24 |
Attorney, Agent or Firm:
SETOUCHI INTERNATIONAL PATENT FIRM (JP)
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