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Laminate adhesive, and laminate and rechargeable battery using same

An adhesive and composition technology, applied in the field of lamination adhesives, can solve the problems of inability to be used as a sealing film, low electrolyte resistance, interlayer peeling, etc., and achieve excellent resistance, excellent adhesion, good The effect of moisture resistance

Active Publication Date: 2015-05-27
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when used as the above-mentioned battery sealing film, although it exhibits excellent adhesive force immediately after lamination, it has low electrolyte resistance and delamination occurs after a long time, so it cannot be used as a sealing film. membrane

Method used

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  • Laminate adhesive, and laminate and rechargeable battery using same
  • Laminate adhesive, and laminate and rechargeable battery using same
  • Laminate adhesive, and laminate and rechargeable battery using same

Examples

Experimental program
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Effect test

Embodiment

[0078] Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples.

Synthetic example 1

[0079] Synthesis example 1 (synthesis example of phosphoric acid-modified epoxy resin (B))

[0080] Using sodium hydroxide as a catalyst, 600 parts of "EPICLON 850" (manufactured by DIC Co., Ltd., epoxy equivalent 185) and 250 parts of bisphenol A produced by epichlorohydrin and bisphenol A were used to obtain epoxy resin by a conventional method. Epoxy resin with an equivalent weight of 900. Gained epoxy resin was dissolved in 400 / 200 / 200 parts of xylene / ethylene glycol monobutyl ether / 1-butyl alcohol respectively, and 24 parts of 89% phosphoric acid were added dropwise several times at 80°C to carry out 10 hours of reaction, after confirming that there is no change in viscosity, adjust until the non-volatile content reaches 50% with ethylene glycol monobutyl ether, and then obtain the phosphoric acid modified epoxy resin (b-1) with a viscosity (25° C.) of W .

Synthetic example 2

[0081] Synthesis example 2 (synthesis example of phosphoric acid-modified epoxy resin (B))

[0082] 545.5 parts of "jER 1001" (BPA type epoxy resin manufactured by Mitsubishi Chemical Co., Ltd., epoxy equivalent 475) and diethylene glycol di 259.0 parts of methyl ether were heated and dissolved, and the temperature was raised to 80°C. After dissolution, 59.7 parts of acrylic acid was added at 80°C, followed by 0.6 parts of dibutylhydroxytoluene and 2.4 parts of triphenylphosphine, and stirred while raising the temperature to 110°C over 1 hour. Keep at 110°C for 3 hours to continue the reaction. When the acid value reaches below 1.0 mg KOH / g, lower the temperature to 80°C, and continuously drop 12.1 parts of 85% phosphoric acid and 70.2 parts of diglyme in 1 hour. composed mixture. Continue to react at 80° C. for 4 hours after the dropwise addition, and then add 50.5 parts of diethylene glycol dimethyl ether, thus obtaining a non-volatile component of 64.0% and a phosphoric a...

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Abstract

[Problem] To provide a laminate adhesive composition that: has excellent adhesion properties with respect to metal layers and plastic layers; provides moisture-proof properties, heat resistance, insulating properties, durability, and the like; further provides electrolyte resistance; and in which delamination does not occur over time. To further provide a laminate and rechargeable battery in which the laminate adhesive is used. [Solution] Provided are: a laminate adhesive composition characterized by containing a modified polyolefin resin (A), a phosphoric acid-modified compound (B), and preferably, an epoxy resin, and a polyisocyanate compound; and a laminate and rechargeable battery in which the laminate adhesive is used.

Description

technical field [0001] The present invention relates to an adhesive for lamination, a laminate using the adhesive, and a secondary battery. Background technique [0002] A secondary battery typified by a lithium ion battery is configured such that an electrolytic solution is sealed between a positive electrode and a negative electrode. In addition, as a sealed bag for sealing the lead wires for taking out the charge of the positive electrode and the negative electrode to the outside, a laminate obtained by laminating metal foil such as aluminum foil, a metal vapor-deposition layer, and plastic can be used. [0003] For this laminate, physical properties, moisture resistance, sealing, penetration resistance, insulation, heat resistance, cold resistance, and corrosion resistance required as a secondary battery are required, and in particular, electrolyte resistance that is insoluble in electrolytes is required. . [0004] Therefore, conventionally, a sealed bag has been prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/00B32B15/085C09J11/06C09J123/26C09J163/00C09J175/04H01M2/02
CPCB32B7/12B32B15/08B32B2307/306B32B2307/7265C08G18/4063C09J11/06C09J163/00C09J175/04H01M50/124Y02E60/10B32B15/085C09J123/00C09J123/26
Inventor 松尾高年木村真实神山达哉
Owner DIC CORP
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