Gas barrier layered product and method for producing the same

Patent metadata

Field	Value
Publication number	US-9327475-B2
Application number	US-93707609-A
Country	US
Kind code	B2
Filing date	Apr 8, 2009
Priority date	Apr 9, 2008
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

The gas barrier layered product of the present invention includes a base and a gas barrier layer stacked on the base. The gas barrier layer is formed of a composition that includes the hydrolyzed condensate of at least one type of compound (L) containing a hydrolyzable characteristic group, and a polymer (X) containing at least one functional group selected from a carboxyl group and a carboxylic acid anhydride group. At least part of —COO— group contained in the functional group of the polymer (X) is neutralized and/or reacted with a compound (P) containing at least two amino groups. At least part of the —COO— group of the polymer (X) is neutralized with a metal ion having a valence of at least two. The ratio of [the equivalent amount of the amino groups contained in the compound (P)]/[the equivalent amount of the —COO— group of the polymer (X)] is in the range of 0.2/100 to 20.0/100.

First claim

The invention claimed is:

1. A gas barrier layered product comprising:
a base; and
at least one layer with gas barrier properties, the layer being stacked on the base, wherein
the layer with gas barrier properties is formed of a composition that comprises a hydrolyzed condensate of at least one type of compound (L) comprising a hydrolyzable group, and a polymer (X) which is polyacrylic acid,
the compound (L) comprising at least one type of compound (A) comprising a metal atom to which the hydrolyzable group is bonded,
at least part of the —COO— group in the functional group of the polymer (X) is neutralized and/or reacted with a compound (P) which is at least one compound selected from the group consisting of ethylenediamine and propylenediamine,
at least part of the —COO— group in the functional group of the polymer (X) is neutralized with a metal ion having a valence of at least two, and
the composition has a ratio of [an equivalent amount of the amino groups in the compound (P)]/[an equivalent amount of the —COO— group in the functional group of the polymer (X)] in the range of 0.2/100 to 20.0/100.

2. The gas barrier layered product according to claim 1 , wherein
the at least one layer has a total thickness of 1 μm or less, and
the gas barrier layered product has an oxygen permeability of 1.1 cm 3 /(m 2 ·day·atm) or less at 20° C. in an atmosphere of 85% RH.

3. The gas barrier layered product according to claim 1 , wherein
the compound (A) is at least one type of compound expressed by the following Formula (I):
M 1 (OR 1 ) q R 2 p−q−r X 1 r   (I),

where: M 1 denotes Si, Al, Ti, Zr, Cu, Ca, Sr, Ba, Zn, Ga, Y, Ge, Pb, Sb, V, Ta, W, La or Nd;
R 1 denotes an alkyl group;
R 2 denotes an alkyl group, an aralkyl group, an aryl group or an alkenyl group;
X 1 denotes a halogen atom;
p is equal to the valence of M 1 ;
q denotes an integer of 0 to p;
r denotes an integer of 0 to p; and
1≦q+r≦p.

4. The gas barrier layered product according to claim 3 , wherein
the compound (L) comprises at least one type of compound (B) comprising a metal atom to which the hydrolyzable characteristic group and an alkyl group substituted by a functional group having reactivity with a carboxyl group are bonded, and
the compound (B) is at least one type of compound expressed by the following Formula (II):
M 2 (OR 3 ) n X 2 k Z 2 m−n−k   (II),

where: M 2 denotes Si, Al, Ti, Zr, Cu, Ca, Sr, Ba, Zn, Ga, Y, Ge, Pb, Sb, V, Ta, W, La or Nd;
R 3 denotes an alkyl group;
X 2 denotes a halogen atom;
Z 2 denotes an alkyl group substituted by a functional group having reactivity with a carboxyl group;
m is equal to the valence of M 2 ;
n denotes an integer of 0 to (m−1);
k denotes an integer of 0 to (m−1); and
1≦n+k≦(m−1), and

a ratio of [the number of moles of M 1 atom derived from the compound expressed by the Formula (I)]/[the number of moles of M 2 atom derived from the compound expressed by the Formula (II)] is in the range of 99.5/0.5 to 80.0/20.0.

5. The gas barrier layered product according to claim 1 , wherein
the compound (L) comprises at least one type of compound (B) comprising a metal atom to which the hydrolyzable characteristic group and an alkyl group substituted by a functional group having reactivity with a carboxyl group are bonded.

6. The gas barrier layered product according to claim 1 , wherein
a ratio of [a weight of an inorganic component derived from the compound (L)]/[a total of a weight of an organic component derived from the compound (L) and a weight of an organic component derived from the polymer (X)] is in the range of 20.0/80.0 to 80.0/20.0.

7. The gas barrier layered product according to claim 1 , wherein the compound (P) is ethylenediamine.

8. The gas barrier layered product according to claim 1 , wherein
at least 60 mol % of the —COO— group in the functional group of the polymer (X) is neutralized with the metal ion.

9. The gas barrier layered product according to claim 1 , wherein
the metal ion is at least one ion selected from the group consisting of calcium ion, magnesium ion, barium ion, zinc ion, iron ion and aluminum ion.

10. The gas barrier layered product according to claim 1 , wherein
the layer with gas barrier properties has a contact angle with water of 20° or more.

11. The gas barrier layered product according to claim 1 , wherein
the composition comprises a compound (Q) different from the compound (L) and the polymer (X), and
the compound (Q) comprises at least two hydroxyl groups.

12. The gas barrier layered product according to claim 1 , wherein the compound (P) is propylenediamine.

Assignees

• Hirose Wataru
• Oshita Tatsuya
• Kuraray Co

Inventors

• Hirose Wataru
• Oshita Tatsuya

Classifications

• B32B2255/20

  Inorganic coating · CPC title

• B32B27/10

  of paper or cardboard · CPC title

• B32B2307/514

  Oriented · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• B32B2307/734

  Dimensional stability · CPC title