Epoxy resin curing agent, epoxy resin composition, and adhesive agent for laminate

A technology of epoxy resin curing and epoxy resin, which is applied in the direction of epoxy resin glue, synthetic resin layered products, adhesive additives, etc., can solve the problems of insufficient adhesion of polyester, achieve improved gas barrier properties, Effect of high gas barrier property and good adhesiveness

Active Publication Date: 2012-12-05
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this epoxy resin composition exhibits good gas barrier performance, further improvement of this performance has been demanded in recent years, and the adhesiveness to polyester is not sufficient, and improvement is required.

Method used

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  • Epoxy resin curing agent, epoxy resin composition, and adhesive agent for laminate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0144] Prepare 50 parts by weight of an epoxy resin (manufactured by Mitsubishi Gas Chemical Co., Ltd.; TETRAD-X) derived from m-xylylenediamine with a glycidyl amino group, 480 parts by weight of methanol, and 461 parts by weight of an epoxy resin curing agent. A solution of 69 parts by weight of ethyl acetate, and 0.1 part by weight of a silicone-based antifoaming agent (manufactured by BYK-Chemie GmbH; BYK065) was added thereto, and fully stirred to obtain a coating material solution (active amine hydrogen in curing agent A number / number of epoxy groups in epoxy resin = 7.24). An ethyl acetate solution (solid content concentration ; 30% by weight) as a polyurethane-based adhesive is applied to a biaxially stretched nylon film (manufactured by Toyobo Co., Ltd.; N1102) with a thickness of 15 μm, dried at 85°C for 10 seconds, and then attached with a nip roll. A stretched ester film (manufactured by Toyobo Co., Ltd.; E5200) with a thickness of 12 μm was combined and aged at 4...

Embodiment 2

[0146] Except using 444 parts by weight of epoxy resin curing agent B instead of epoxy resin curing agent A, 454 parts by weight of methanol, and 66 parts by weight of ethyl acetate, it was produced by the same method as in Example 1. The active amine hydrogen number in the curing agent B / the epoxy group number in the epoxy resin is 7.33. The results are shown in Table 1.

Embodiment 3

[0148] It was produced by the same method as in Example 1 except that 851 parts by weight of epoxy resin curing agent C was used instead of epoxy resin curing agent A, methanol was 710 parts by weight, and ethyl acetate was 112 parts by weight. The active amine hydrogen number in the curing agent C / the epoxy group number in the epoxy resin is 12.22. The results are shown in Table 1.

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PUM

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Abstract

Disclosed are: an epoxy resin curing agent that, in addition to the excellent performance and high gas barrier performance of epoxy resins, grants favorable adhesive qualities to polyester; an epoxy resin composition containing said epoxy resin curing agent; an adhesive agent that is for a laminate and that has said composition has the primary component; and a laminate film, multi-layered packaging material, and a bag for packaging that use said adhesive agent. The epoxy resin curing agent is characterized by being a reaction product of the belowmentioned A, B, and C: (A) metaxylylene diamine or a paraxylylene diamine; (B) a polyfunctional compound that has one acyl group, can form an oligomer, and forms an amide group site by means of a reaction with a polyamine; and (C) an aromatic dicarboxylic acid, an ester thereof, a amide, an acid anhydride, or an acid chloride.

Description

technical field [0001] The present invention relates to an epoxy resin curing agent imparting high gas barrier properties, long pot life, and excellent adhesiveness, and an epoxy resin composition containing the same. In addition, it relates to a lamination adhesive mainly composed of the epoxy resin composition, a lamination film using the same, a multilayer packaging material, and a packaging bag. Background technique [0002] In recent years, as a packaging material, composite flexible films made of different polymer materials have gradually become mainstream due to reasons such as strength, product protection, work adaptability, and publicity effects brought about by printing. This kind of composite film is usually composed of a thermoplastic film layer as an outer layer with a product protection function and a thermoplastic film layer as a sealing layer, and their lamination is carried out by the following method: coating and bonding A dry lamination method in which an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/54B32B27/00B65D65/40C09J11/06C09J163/00
CPCC08G59/54C09J163/00
Inventor 熊本佳奈本多荣一
Owner MITSUBISHI GAS CHEM CO INC
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