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Adhesive for laminated sheets

A technology of adhesives and laminates, applied in the direction of adhesive types, polyurea/polyurethane adhesives, adhesives, etc., which can solve the problems of difficult appearance and short pot life of laminated sheets during film lamination

Active Publication Date: 2018-11-09
HENKEL KGAA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Addition of catalyst improves cure, but pot life may be too short, causing some difficulty in film lamination process and appearance of laminates obtainable

Method used

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  • Adhesive for laminated sheets
  • Adhesive for laminated sheets
  • Adhesive for laminated sheets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0223] As shown in Table 3, 90.1 g of polymer 1 (A1) [180.2 g of polymer 1 in ethyl acetate (50.0% by weight solid content)], 4.5 g of oleic acid (B6), 3.9 g of isocyanate compound 1 ( C1), 1.5 g of isocyanate compound 3 (C3), and 0.5 g of 3-glycidyloxypropyltriethoxysilane (D2) produced by EVONIK Industries AG were mixed and then ethyl acetate was added so that the solid content was 40% by weight, To obtain the adhesive for laminated sheet of Example 1.

Embodiment 2～19 and comparative example 1～8

[0225] Each adhesive for a laminated sheet was obtained by blending components (A) to (C) in respective amounts shown in Tables 3 to 5 by using a method similar to that of Example 1. In Tables 3 to 5, a silane compound as component (D) is optionally blended, and (D1) is 3-glycidyloxypropyltrimethoxysilane produced by EVONIK Industries AG, (D2) is as above Described as 3-glycidoxypropyltriethoxysilane manufactured by EVONIK Industries AG.

[0226] table 3

[0227]

[0228] Table 4

[0229]

[0230] table 5

[0231]

[0232] These adhesives for laminated sheets were evaluated by the following tests.

[0233]

[0234] Each of the adhesives for the laminated sheet of Examples and Comparative Examples was applied to a transparent polyethylene terephthalate (PET) sheet (O300EW36 (trade name), Mitsubishi Polyester Film Corporation) using a bar coater. Production), so that the weight of the solid content is 10g / m 2 , and then dried at 80° C. for 5 minutes to form an ad...

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Abstract

Disclosed is an adhesive for laminated sheets, which adhesive is applied to a film to bond a plurality of films, and is a mixture comprising: (A) an acrylic polyol, (B) at least one selected from carboxylic acids and carboxylic anhydrides; and (C) an isocyanate compound, wherein the (B) is mixed in an amount of 0.01 to 8.0 parts by weight per 100 parts by weight of the total of the (A)-(C), and wherein the (A) is obtainable by polymerizing a polymerizable monomer, and is a polymer having a weight average molecular weight of 10,000 to 100,000 and a hydroxyl value of 0.5 to 40 mgKOH / g. The adhesive for laminated sheets is excellent in coatability, peel strength after curing and hydrolysis resistance for a long time under high temperature when a laminated sheet is produced, and wherein the adhesive for laminated sheets does not impart an adverse effect to the appearance of the laminated sheet while improving the curability. A laminated sheet is suitably prepared using the adhesive for laminated sheets.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under Article 4 of the Paris Convention to Japanese Patent Application No. 2016-105473 filed in Japan on May 26, 2016. This priority patent application is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to an adhesive for laminated 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 signs, and packaging bags, etc. A laminated sheet (or laminate) ...

Claims

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Application Information

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IPC IPC(8): C08G18/62C08G18/80C08G18/34C08G18/76C08G18/79C09J175/04
CPCC08G18/6229C08G18/7642C08G18/792C08G18/8022C08G18/34C09J175/04C08G18/6225C09J11/06
Inventor 伊藤祥子池田仁志
Owner HENKEL KGAA