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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., can solve problems such as reduced adhesive strength, achieve excellent weather resistance, moderate curing rate, The effect of excellent initial adhesion and hydrolysis resistance

Inactive Publication Date: 2015-04-29
HENKEL KGAA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When exposed outdoors for a long period of time, the bond strength between the adhesive and the fluororesin-based film decreases sharply

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

[0196]

[0197] As shown in Table 2, 93.1 g of acrylate polyol (A1) [186.2 g of acrylate polyol (A1) in ethyl acetate (solid content: 50.0% by weight)] was mixed with 2.8 g [3.0% based on 100 % solid content of acrylate polyol (A1)] Glycidyl-based silane compound (B1) was mixed, then 2.8 g of isocyanate compound (C1) and 1.3 g of isocyanate compound (C2) were added, followed by mixing. Also, ethyl acetate was added to the mixture to prepare a binder solution having a solid content of 30% by weight. The following tests were carried out using the solution thus prepared as a binder.

[0198]

[0199] First, the adhesive of Example 1 was applied to a transparent polyethylene terephthalate (PET) sheet (O300EW36 (trade name), manufactured by Mitsubishi Polyester Film Co., Ltd.) so that the weight of the solid component 10g / m 2 , and then dried at 80° C. for 10 minutes to obtain a PET sheet coated with an adhesive.

[0200] Then, a 50 μm-thick surface-treated transparent polyo...

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Abstract

Disclosed is an adhesive for laminated sheets comprising: a urethane resin obtainable by mixing an acrylic polyol with an isocyanate compound; and a silane compound; wherein the silane compound contains a glycidyl based silane compound, wherein the acrylic polyol is obtainable by polymerizing polymerizable monomer, the polymerizable monomer contains a monomer having a hydroxyl group and the other monomer, and the other monomer contains acrylonitrile, and the isocyanate compound contains at least one selected from xylylene diisocyanate and hexamethylene diisocyanate. The adhesive for laminated sheets has a moderate curing rate and is excellent in initial adhesion to a film and in long-term hydrolysis resistance at high temperature; it is also excellent in weatherability.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under Article 4 of the Paris Convention based on Japanese Patent Application No. 2012-184804 filed in Japan on August 24, 2012, the entire contents of which are incorporated herein by reference. technical field [0003] This invention relates to adhesives for laminated sheets. Background technique [0004] Outdoor materials such as wall protection materials, roof materials, solar panel materials, window materials, outdoor floor materials, lighting protection materials, automobile parts, and signboards include laminates obtained by laminating multilayer films to each other using adhesives (or laminate) as a constituent material. Examples of films constituting the laminate include metal foils made of metals such as aluminum, copper, and steel; metal plates and deposited metal films; and films made of plastics such as polypropylene, polyvinyl chloride, polyvinyl chloride, esters, fluoro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/62C08G18/76C09J175/12C08G18/72C08G18/79B32B27/00H01L31/00
CPCB32B7/12B32B17/10018B32B17/10788B32B27/08B32B2457/10C08G18/6262C08G18/725C08G18/7642C08G18/792C09J175/12C08F220/1804H01L31/049Y02E10/50C09J175/06
Inventor 山田泰史伊藤祥子釜井教义池田仁志
Owner HENKEL KGAA
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