Title:
OPTICAL FILM AND PRODUCTION METHOD FOR OPTICAL FILM
Document Type and Number:
WIPO Patent Application WO/2018/135433
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an optical film that includes a polyamide-imide resin, and, in particular, an optical film that is suitable for use as a front surface plate for a flexible display or the like and includes a polyamide-imide resin that can increase surface hardness even under relatively low-temperature heating conditions. The present invention provides an optical film that: includes a polyamide-imide resin that has a tanδ peak value, as measured by DMA, within the range of 300℃–370℃; and has a YI value of no greater than 3.
Inventors:
MIYAMOTO KOJI (JP)
SUGIYAMA HIROKO (JP)
IKEUCHI JUNICHI (JP)
SUGIYAMA HIROKO (JP)
IKEUCHI JUNICHI (JP)
Application Number:
PCT/JP2018/000806
Publication Date:
July 26, 2018
Filing Date:
January 15, 2018
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B1/14; C08G73/14; C08J5/18; C08L79/08; C09D7/40; C09D179/08; G02B5/22
Domestic Patent References:
| WO2012144563A1 | 2012-10-26 | |||
| WO2016002665A1 | 2016-01-07 | |||
| WO2016152459A1 | 2016-09-29 |
Foreign References:
| JP2009086362A | 2009-04-23 | |||
| US5071997A | 1991-12-10 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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