Adhesive, laminated film using the same and polyol composition for adhesive

A polyol composition and adhesive technology, applied in adhesives, household components, adhesive types, etc., can solve the problems of not being able to obtain actual packaging, and achieve excellent curability, improved appearance, and better texture Effect

Pending Publication Date: 2018-08-28
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, either method has the problem of not being able to obtain desired practical packaging properties.

Method used

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  • Adhesive, laminated film using the same and polyol composition for adhesive
  • Adhesive, laminated film using the same and polyol composition for adhesive
  • Adhesive, laminated film using the same and polyol composition for adhesive

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0087] Production example 1 [synthesis of polyisocyanate (A-1)]

[0088] 36 parts of 4,4-diphenylmethane diisocyanate and 19 parts of 2,4'-diphenylmethane diisocyanate were put into a reaction vessel in a flask equipped with a stirrer, a thermometer, and a nitrogen gas introduction tube, and stirred under nitrogen gas , heated to 60°C. Add 11 parts of polypropylene glycol (hereinafter abbreviated as "PPG") with a number average molecular weight of 400, 22 parts of PPG with a number average molecular weight of 1000, and 11 parts of PPG with a number average molecular weight of 2000 in several drops, and stir for 5 to 6 hours to make the amino group The formic esterification reaction ends. The NCO group content rate of the obtained polyisocyanate was 13.5%, and the melt viscosity at 40 degreeC was 1500 mPa.s. Hereinafter, this polyisocyanate is abbreviated as "A-1".

Embodiment 1～21 and comparative example 1～9

[0090] Adhesives were prepared according to the formulations in Table 1, Table 2, and Table 3, and the following various evaluations were performed. The results are shown in Tables 1-3.

[0091] (Manufacturing method of film for flexible packaging)

[0092] As a manufacturing method of the film for flexible packaging, it carries out by manufacturing method (1) and manufacturing method (2).

[0093] (manufacturing method 1)

[0094] After preparing an adhesive from the polyisocyanate composition (X) and polyol composition (Y) according to the formulations described in Tables 1 to 5, the adhesive was coated on the film A so that the coating amount became 2.0 g / m 2 Left and right, the coated surface of the film A was bonded to the film B using a laminator to prepare a laminated film for shear strength measurement.

[0095] (manufacturing method 2)

[0096] Prepare polyisocyanate composition (X) and polyol composition (Y) respectively according to the formulations described ...

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Abstract

Provided are a solvent-free two-component type adhesive capable of guaranteeing a practical packaging property, with an excellent curing property and significantly shortening aging time, a laminated film using the same, and a polyol composition for an adhesive. An adhesive, characterized in comprising a polyisocyanate composition (X) containing a polyisocyanate (A), and a polyol composition (Y) containing a polyol (C) and a tertiary amine compound (B) having multiple hydroxyl groups, as necessary components.

Description

technical field [0001] The present invention relates to a two-component adhesive, a polyol composition for an adhesive used therefor, and a laminated film obtained by laminating various films using the adhesive. More specifically, it can be used without a solvent, and is used when laminating various plastic films, metal vapor-deposited films, aluminum foils, etc. to produce composite films mainly used for packaging materials such as food, pharmaceuticals, and detergents. Adhesives used for lamination. Background technique [0002] Polyurethane resins are widely used as lamination adhesives for flexible packaging materials due to their excellent adhesion to substrates and flexibility, and laminated films bonded with urethane resin-based adhesives are used for food , pharmaceuticals, detergents and other packaging materials. [0003] Conventionally, the dry lamination method of applying an adhesive dissolved in an organic solvent to the film, volatilizing the organic solvent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/28B32B7/12
CPCB32B7/12C08G18/4825C08G18/7671C08G18/3275C09J175/04C08G18/5021B32B15/085B32B27/08B32B2250/02B32B2250/24B32B15/20B32B27/36B32B27/34B32B27/32B32B2255/205B32B2255/10B32B2307/542B32B2439/80B32B2439/70C08G18/10C08G18/50B32B27/40B32B2553/00C08G18/5024C09J175/06C09J175/08
Inventor 中村真富田大树高桥茂和刘兵兵赵峰刘志强
Owner DIC CORP
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