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Adhesives for Laminated Sheets

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

Active Publication Date: 2022-03-25
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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  • Adhesives for Laminated Sheets
  • Adhesives for Laminated Sheets
  • Adhesives 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

The present invention discloses an adhesive for laminating sheets, the adhesive is applied on a film to bond a plurality of films, and is a mixture comprising (A) an acrylic polyol, (B) selected from At least one of carboxylic acid and carboxylic anhydride, and (C) an isocyanate compound, wherein the mixing amount of (B) is 0.01 to 8.0 per 100 parts by weight of all the components (A) to (C) parts by weight, 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. When preparing a laminated sheet, the adhesive for a laminated sheet has excellent coatability, peel strength after aging, and long-term hydrolysis resistance at high temperature, and wherein the adhesive for a laminated sheet The adhesive improves curability without adversely affecting the appearance of the laminate. A laminated sheet can be suitably prepared using the adhesive for a laminated sheet.

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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Patent Type & Authority Patents(China)
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