Adhesive for inorganic vapor-deposited film

• US 6,743,512 B2
• Filed: 03/14/2002
• Issued: 06/01/2004
• Est. Priority Date: 03/16/2001
• Status: Expired due to Fees

• Current Assignee: Toyoda Gosei Company Limited (Toyota Motor Corporation)
• Original Assignee: Toyoda Gosei Company Limited (Toyota Motor Corporation)
• Inventors: Yatsuka, Takeshi, Murata, Masaki, Emoto, Katsuya, Nishida, Mitsuo
• Primary Examiner(s): Moore, Margaret G.
• Application Number:
  US10/096,900
• Publication Number:
  US 20020168515A1
• Time in Patent Office: 810 Days
• Field of Search: 528/26, 528/28, 528/38, 428/423.1, 428/447
• US Class Current: 428/423.1
• CPC Class Codes: C08G 18/289 containing silicon
• CPC Class Codes: C08G 18/4241 from dicarboxylic acids and dialcohols in combination with polycarboxylic acids and/or polyhydroxy compounds which are at least trifunctional
• CPC Class Codes: C09J 175/06 from polyesters
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/31551 Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane
• CPC Class Codes: Y10T 442/2738 Coating or impregnation intended to function as an adhesive to solid surfaces subsequently associated therewith

Abstract

There is provided an adhesive for inorganic vapor-deposited film which is characterized in containing a compounded product and/or a reacted product of polyurethane resin or polyester resin having a branch in a molecule with a silane coupling agent.

When the said adhesive is directly coated on an inorganic vapor-deposited film and adhered with a heat-sealing resin, a good adhesion is achieved. Also, when a packaging bag prepared by using the above is torn, a good tearing property is achieved.

Claims

1. An adhesive for an inorganic vapor-deposited film, comprising a compounded product or a reacted product of a polyurethane resin having a branch in a molecule with a silane coupling agent or mixtures of said compounded and reacted products, wherein a concentration of the branch of the polyurethane resin is 30-300 equivalents/ton.

2. The adhesive for an inorganic vapor-deposited film according to claim 1, wherein the polyurethane resin comprises about 15-95% by weight of a polyester polyol component having a glass transition temperature of 30°

C. or higher based on the total weight of the polyurethane resin.

4. The adhesive for an inorganic vapor-deposited film according to claim 1 or 3, wherein the silane coupling agent comprises an amino group.

5. The adhesive for an inorganic vapor-deposited film according to claim 1 or 3, further comprising an isocyanate crosslinker.

6. The adhesive for an inorganic vapor-deposited film according to claim 2, wherein the silane coupling agent comprises an amino group.

7. The adhesive for an inorganic vapor-deposited film according to claim 2, further comprising an isocyanate crosslinker.

8. The adhesive for an inorganic vapor-deposited film according to claim 4, further comprising an isocyanate crosslinker.

3. An adhesive for an inorganic vapor-deposited film, comprising a compounded product or a reacted product of a polyester resin having a branch in a molecule with a silane coupling agent, or mixtures of said compounded and reacted products, wherein a concentration of the branch of the polyester resin is 30-300 equivalents/ton.

9. A compounded film wherein an inorganic vapor-deposited film and a heat-sealing resin film have been laminated to each other via an adhesive, wherein the adhesive comprises a compounded product or a reacted product of a polyurethane resin having a branch in a molecule with a silane coupling agent or mixtures of said compounded and reacted products, wherein a concentration of the branch of the polyurethane resin is 30-300 equivalents/ton.

10. The compounded film according to claim 9, wherein the branch concentration of the polyurethane resin is 30-300 equivalents/ton.

11. The compounded film according to claim 9 or 10, wherein the polyurethane resin comprises about 15-95% by weight of a polyester polyol component having a glass transition temperature of 30°

C. or higher based on the total weight of the polyurethane resin.

13. The compounded film according to claim 9, 10 or 12, wherein the silane coupling agent comprises an amino group.

14. The compounded film according to claim 9, 10 or 12, further comprising an isocyanate crosslinker.

15. The compounded film according to claim 11, wherein the silane coupling agent comprises an amino group.

16. The compounded film according to claim 11, further comprising an isocyanate crosslinker.

17. The compounded film according to claim 13, further comprising an isocyanate crosslinker.

12. A compounded film wherein an inorganic vapor-deposited film and a heat-sealing resin film have been laminated to each other via an adhesive, wherein the adhesive comprises a compounded product or a reacted product of a polyester resin having a branch in a molecule with a silane coupling agent, or mixtures of said compounded and reacted products, wherein a concentration of the branch of the polyurethane resin is 30-300 equivalents/ton.