Title:
POLYVINYL ALCOHOL FILM AND STRETCHED FILM
Document Type and Number:
WIPO Patent Application WO/2024/085142
Kind Code:
A1
Abstract:
The present invention relates to a polyvinyl alcohol film containing a polyvinyl alcohol resin (α) and a nitrogen element-containing compound (β), wherein the signal intensity ratio in TOF-SIMS measurement data satisfies expression (I) below. (I): (C/D)/(A/B) > 5 [In the expression, A indicates an intensity value of a CN- signal derived from the nitrogen element-containing compound (β) at Pmin; B indicates an intensity value of a C2H3O2
- signal derived from the polyvinyl alcohol resin (α) at Pmin; C indicates an intensity value of the CN- signal derived from the nitrogen element-containing compound (β) at PMAX; and D indicates an intensity value of the C2H3O2
- signal derived from the polyvinyl alcohol resin (α) at PMAX.]
Inventors:
YAMAGUCHI MAO (JP)
ISOZAKI TAKANORI (JP)
ISOZAKI TAKANORI (JP)
Application Number:
PCT/JP2023/037513
Publication Date:
April 25, 2024
Filing Date:
October 17, 2023
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08J5/18; B32B27/30; C08L29/04; G02B5/30
Domestic Patent References:
| WO2013015134A1 | 2013-01-31 | |||
| WO2020203312A1 | 2020-10-08 | |||
| WO2022145441A1 | 2022-07-07 |
Foreign References:
| JP2001091740A | 2001-04-06 | |||
| JP2022120975A | 2022-08-19 | |||
| JP2011053234A | 2011-03-17 | |||
| JP2006219637A | 2006-08-24 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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