ETHYLENE-VINYL ALCOHOL COPOLYMER-CONTAINING RESIN COMPOSITION, FILM, LAMINATE, PACKAGING MATERIAL, VACUUM THERMAL INSULATOR, FILM PRODUCTION METHOD, AND LAMINATE PRODUCTION METHOD

• US 20160108193A1
• Filed: 05/28/2014
• Published: 04/21/2016
• Est. Priority Date: 05/29/2013
• Status: Active Grant

• Current Assignee: Kuraray Company Limited
• Original Assignee: Kuraray Company Limited
• Inventors: KAWAI, Hiroshi, NONAKA, Yasuhiro
• Granted Patent: US 10,047,204 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B29B 9/12 characterised by structure or composition
• CPC Class Codes: C08J 2323/08 Copolymers of ethene C08J2323/16 takes precedence
• CPC Class Codes: C08J 2329/04 Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
• CPC Class Codes: C08J 5/18 Manufacture of films or sheets
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C08J 7/048 Forming gas barrier coatings
• CPC Class Codes: C08J 7/052 Forming heat-sealable coatings
• CPC Class Codes: C08J 7/06 with compositions not containing macromolecular substances
• CPC Class Codes: C08K 2003/2213 of cerium
• CPC Class Codes: C08K 2003/222 Magnesia, i.e. magnesium oxide
• CPC Class Codes: C08K 2003/2227 of aluminium
• CPC Class Codes: C08K 2003/2244 of zirconium
• CPC Class Codes: C08K 2003/2255 of molybdenum
• CPC Class Codes: C08K 3/01 characterized by their specific function
• CPC Class Codes: C08K 3/02 Elements
• CPC Class Codes: C08K 3/22 of metals
• CPC Class Codes: C08K 3/36 Silica
• CPC Class Codes: C08K 5/07 Aldehydes; Ketones
• CPC Class Codes: C08L 29/04 Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
• CPC Class Codes: C23C 14/14 Metallic material, boron or silicon

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.

Claims

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.