Ethylene-vinyl alcohol copolymer-containing resin composition, film, laminate, packaging material, vacuum thermal insulator, film production method, and laminate production method

Patent metadata

Field	Value
Publication number	US-2016108193-A1
Application number	US-201414894459-A
Country	US
Kind code	A1
Filing date	May 28, 2014
Priority date	May 29, 2013
Publication date	Apr 21, 2016
Grant date	—

Abstract

Provided is a resin composition that achieves superior appearance characteristics such as a color of a film end (or a roll end) after melt molding, film-breaking resistance, blocking resistance, vapor deposition defects-inhibiting properties, and adhesive strength of a vapor deposition layer. The resin composition contains: an ethylene-vinyl alcohol copolymer; inorganic particles; and an aliphatic carbonyl compound having 3 to 8 carbon atoms, in which the content of the inorganic particles is 50 ppm or greater and 5,000 ppm or less, the aliphatic carbonyl compound is at least one selected from the group consisting of a saturated aldehyde, an unsaturated aldehyde and a saturated ketone, and the content of the aliphatic carbonyl compound is 0.01 ppm or greater and 100 ppm or less. The inorganic particles preferably contain a metal element which is at least one selected from the group consisting of silicon, aluminum, magnesium, zirconium, cerium, tungsten and molybdenum.

First claim

1 . A resin composition comprising:
an ethylene-vinyl alcohol copolymer (A); inorganic particles (B); and an aliphatic carbonyl compound (C) having 3 to 8 carbon atoms, wherein a content of the inorganic particles (B) is 50 ppm or greater and 5,000 ppm or less, the aliphatic carbonyl compound (C) is at least one selected from the group consisting of a saturated aldehyde (c-1), an unsaturated aldehyde (c-2) and a saturated ketone (c-3), and a content of the aliphatic carbonyl compound (C) is 0.01 ppm or greater and 100 ppm or less.

2 . The resin composition according to claim 1 , wherein the inorganic particles (B) comprise a metal element which is at least one selected from the group consisting of silicon, aluminum, magnesium, zirconium, cerium, tungsten and molybdenum.

3 . The resin composition according to claim 1 , wherein the aliphatic carbonyl compound (C) is at least one selected from the group consisting of the saturated aldehyde (c-1) and the unsaturated aldehyde (c-2), and the at least one selected from the group consisting of the saturated aldehyde (c-1) and the unsaturated aldehyde (c-2) is at least one selected from the group consisting of propanal, butanal, hexanal, crotonaldehyde, 2,4-hexadienal and 2,4,6-octatrienal.

4 . The resin composition according to claim 1 , wherein the aliphatic carbonyl compound (C) is the saturated ketone (c-3), and the saturated ketone (c-3) is at least one selected from the group consisting of acetone, methyl ethyl ketone and 2-hexanone.

5 . A film formed from the resin composition according to claim 1 .

6 . A laminate comprising:
a layer comprising the film according to claim 5 ; and at least one other layer comprising other component.

7 . The laminate according to claim 6 , wherein the other layer is a metal vapor deposition layer.

8 . The laminate according to claim 7 , wherein the laminate comprises two or more metal vapor deposition layers as the other layer on one side or both sides of the film.

9 . The laminate according to claim 7 , wherein a sum of the average thickness of the metal vapor deposition layer(s) on one side of the film is 15 nm or greater and 150 nm or less.

10 . A packaging material comprising the film according to claim 5 .

11 . A packaging material comprising the laminate according to claim 6 .

12 . A vacuum thermal insulator comprising the laminate according to claim 7 .

13 . A method for producing the film according to claim 5 , comprising:
cast-molding the resin composition according to claim 1 .

14 . A method for producing the film according to claim 5 , comprising:
stretching the film formed from the resin composition according to claim 1 .

15 . A method for producing the laminate according to claim 7 , comprising:
forming the metal vapor deposition layer on the film, wherein a surface temperature of the film in forming the metal vapor deposition layer is 60° C. or less.

Assignees

• Kuraray Co

Inventors

• Kawai Hiroshi
• Nonaka Yasuhiro

Classifications

• C23C14/14

  Metallic material, boron or silicon · CPC title

• C08K2003/2213

  of cerium · CPC title

• C08K2003/222

  Magnesia, i.e. magnesium oxide · CPC title

• C08K3/36

  Silica · CPC title

• C08K2003/2244

  of zirconium · CPC title