Title:
COATING AGENT AND MULTILAYER STRUCTURE USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/228955
Kind Code:
A1
Abstract:
The present invention provides a coating agent which contains a modified ethylene-vinyl alcohol copolymer (A), wherein: the modified ethylene-vinyl alcohol copolymer (A) comprises structural units (Ia), (Ib) and (Ic) represented by the specific formulae; the respective content ratios a, b and c (% by mole) of the structural units (Ia), (Ib) and (Ic) satisfy formulae (1) to (3); and the degree of saponification (DS), as expressed by formula (4), of the modified ethylene-vinyl alcohol copolymer (A) is 90% by mole or more. A solution of this coating agent exhibits excellent storage stability; and a coating film obtained by applying this coating agent has good appearance and good gas barrier properties. (1): 21 ≤ a ≤ 55 (2): 0.1 ≤ c ≤ 10 (3): (100 - (a + c)) × 0.9 ≤ b ≤ (100 - (a + c)) (4): DS = ((total number of moles of hydrogen atoms from among X, Y and Z)/(total number of moles of X, Y and Z)) × 100
Inventors:
SAKANO TAKESHI (JP)
NONAKA YASUHIRO (JP)
NONAKA YASUHIRO (JP)
Application Number:
PCT/JP2023/019219
Publication Date:
November 30, 2023
Filing Date:
May 23, 2023
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C09D129/04; B32B27/10; B32B27/28; B65D65/40; C09D7/20; C09D7/61; C09D123/08
Foreign References:
| JP2022013858A | 2022-01-18 | |||
| JPH0247144A | 1990-02-16 | |||
| JP2004161854A | 2004-06-10 | |||
| JP2019182947A | 2019-10-24 | |||
| JPH1025329A | 1998-01-27 |
Attorney, Agent or Firm:
SETOUCHI INTERNATIONAL PATENT FIRM (JP)
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