Title:
ETHYLENE-VINYL ALCOHOL COPOLYMER PARTICLES, METHOD FOR PRODUCING SAME AND USE OF SAME
Document Type and Number:
WIPO Patent Application WO/2019/078181
Kind Code:
A1
Abstract:
Ethylene-vinyl alcohol copolymer particles which are characterized by containing an ethylene-vinyl alcohol copolymer that has an ethylene unit fraction of 1% by mole or more but less than 20% by mole, a viscosity-average degree of polymerization of 200 to 5,000 and a saponification degree of 80% by mole to 99.99% by mole, and which are also characterized in that the crystallinity in water at 30°C (Cw(30°C)) and the crystallinity in water at 70°C (Cw(70°C)) as determined by pulsed NMR satisfy formula (I). Consequently, the present invention provides ethylene-vinyl alcohol copolymer particles which have excellent solubility in water and excellent gas barrier properties.
Inventors:
TANIDA TATSUYA (JP)
MORIKAWA KEISUKE (JP)
NAKAMAE MASATO (JP)
INADA SEISUKE (JP)
MORIKAWA KEISUKE (JP)
NAKAMAE MASATO (JP)
INADA SEISUKE (JP)
Application Number:
PCT/JP2018/038403
Publication Date:
April 25, 2019
Filing Date:
October 16, 2018
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08F216/06; C08F8/12; C08J7/043; C08J7/048; C09D5/00; C09D123/04; C09D129/04
Domestic Patent References:
| WO2015098996A1 | 2015-07-02 | |||
| WO2017047806A1 | 2017-03-23 |
Foreign References:
| JP2013095868A | 2013-05-20 | |||
| JPH1121320A | 1999-01-26 | |||
| JP2011202052A | 2011-10-13 | |||
| JP2000309607A | 2000-11-07 |
Attorney, Agent or Firm:
SETOUCHI INTERNATIONAL PATENT FIRM (JP)
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