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Urethane adhesive for laminated sheets

A technology for laminating sheets and adhesives, applied in the field of packaging bags and outdoor materials, can solve the problems of difficult appearance of laminated sheets, short working life of pot life, etc.

Pending Publication Date: 2017-08-01
HENKEL KGAA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Addition of catalyst improves curability, but short pot life may have some difficulties in film lamination process and appearance of resulting laminated sheet since pot life (or working life) may be too short

Method used

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  • Urethane adhesive for laminated sheets
  • Urethane adhesive for laminated sheets
  • Urethane adhesive for laminated sheets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0194] As shown in Table 3, weigh 90.1g (A1) polymer 1 [180.2g ethyl acetate solution of polymer 1 (50.0% by weight solid content)], 4.5g (B6) oleic acid, 4.05g (C1) isocyanate Compound 1, 1.35 g (C3) isocyanate compound 3 and 0.5 g of 3-glycidoxypropyltriethoxysilane (S1) produced by Evonik Industries AG were mixed and then ethyl acetate was added to make a solid content of 35 % to obtain adhesives for laminating sheets.

Embodiment 2-19 and comparative example 1-7

[0196] Various adhesives for laminating sheets were obtained by mixing the respective amounts of ingredients (A)-(C) shown in Table 3-Table 5 by using a method similar to that of Example 1.

[0197] [table 3]

[0198]

[0199] [Table 4]

[0200]

[0201] [table 5]

[0202] comparative example 1 2 3 4 5 6 7 (A)(A1) (A2) 98.7 (A3) (A4) (A5) (A6) (A7) 94.7 (A8) (A9) (A10) (A11) (A12) (A13) (A14) 94.8 (A')(A'15) 84.0 (A’16) 92.9 (A’17) 92.2 (A’18) 88.0 (B)(B1) (B2) (B3) 0.19 (B4) 2.5 (B5) (B6) 2.77 (B7) (B8) ...

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Abstract

Disclosed is an adhesive for laminated sheets comprising a urethane resin obtainable by blending: (A) an acrylic polyol; (B) at least one selected from carboxylic acids and carboxylic anhydrides; and (C) an isocyanate compound, wherein the acrylic polyol (A) is obtainable by the polymerization of a polymerizable monomer, has a glass transition temperature of from -35 to 20 degrees centigrade, and has a hydroxyl value of from 0.5 to 40 mgKOH / g. The adhesive for laminated sheets is excellent in initial adhesion to a film, peel strength after aging and hydrolysis resistance for a long time under high temperature when a laminated sheet is produced, and wherein the adhesive does not impart an adverse effect to the appearance of the laminated sheet and the lamination process of films while improving the curability. The laminated sheet is suitably prepared using the adhesive for laminated sheets. An article comprising the laminated sheet can be prepared using the laminated sheet.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under Article 4 of the Paris Convention from Japanese Patent Application No. 2014-246658 filed in Japan on December 5, 2014. This priority patent application is hereby incorporated by reference in its entirety. technical field [0003] This invention relates to adhesives for laminating sheets. Furthermore, the present invention also relates to a laminated sheet obtainable by using the adhesive and an article (or material) obtainable by using the laminated sheet, such as a packaging bag (for shampoo, detergent, packaging bags for food, etc.) and outdoor materials (solar battery modules, etc.). Background technique [0004] Outdoor materials such as barrier materials, roofing materials, solar cell modules (or panels), window materials, outdoor flooring materials, lighting protection materials, automotive components, and billboards; and packaging bags, etc. including laminated sheets A ...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/79C08G18/62C09J175/04
CPCC08G18/6262C08G18/7642C08G18/792C09J175/04C08K5/09B32B7/12B32B2375/00C08G18/281C08G18/30C08G18/341C08G18/6241C08G18/65C08G18/6541C08G18/6755
Inventor 伊藤祥子釜井教义山田泰史池田仁志
Owner HENKEL KGAA
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