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Polyolefin-based adhesive agent composition

A composition and adhesive technology, applied in the direction of adhesives, battery pack parts, synthetic resin layered products, etc., can solve problems such as cracks and pinholes, and achieve maintenance of pot life, taking into account formability, and good pot life. sexual effect

Pending Publication Date: 2019-09-13
TOYOBO MC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During this molding, since the battery packaging material is stretched, cracks and pinholes may occur in the barrier layer at the flange of the mold.
Especially in recent years, with the demand for smaller and thinner batteries, thinner battery packaging materials are being sought, and such problems tend to occur more significantly.

Method used

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  • Polyolefin-based adhesive agent composition
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  • Polyolefin-based adhesive agent composition

Examples

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Embodiment

[0072] The following examples illustrate the present invention in more detail. It is just that the present invention is not limited to the examples. In the examples and comparative examples, the parts are simply described and represent parts by mass.

manufacture example 1

[0075] 100 parts by mass of propylene-ethylene copolymer (storage modulus at 25°C of 320 MPa, tensile elongation at break of 760% at 25°C), 233 parts by mass of toluene, and 1 part by mass of maleic anhydride were added to a 1-liter autoclave. . 0.5 parts by mass of di-tert-butyl peroxide, heated up to 140° C., and then further stirred for 1 hour (here, referred to as “reaction” for 1 hour). After that, the obtained reaction solution was cooled to 100° C., poured into a container containing 717 parts by mass of toluene and 950 parts by mass of methyl ethyl ketone preheated to 40° C. while stirring, cooled to 40° C., and stirred for 30 minutes. Further cooling to 25° C. precipitates the resin (here, the operation of pouring the reaction solution into a solvent such as methyl ethyl ketone while stirring and cooling to deposit the resin is referred to as “reprecipitation”). Thereafter, the acid-modified propylene-ethylene copolymer graft-polymerized with maleic anhydride is separ...

manufacture example 2

[0079] Except that the addition amount of maleic anhydride was changed to 3 parts by mass, the number of times of repulping was changed to 1 time, and the amount of methyl ethyl ketone input during repulping was changed to 1000 parts by mass, it was carried out in the same manner as in Production Example 1, thereby obtaining Maleic anhydride-modified propylene-ethylene copolymer of acid-modified polyolefin (PO-2, acid value 5 mgKOH / g resin, acetone-extracted component ratio 1.8% by mass, storage modulus at 25°C 280 MPa, Tensile elongation at break 650%, weight average molecular weight 180,000, Tm88°C, ΔH36J / g).

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Abstract

To provide an adhesive agent composition that has an excellent pot life, excellent adhesiveness between a metal substrate and a polyolefin resin substrate, chemical resistance, and moldability, and that contains an acid-modified polyolefin and a multifunctional polyisocyanate curing agent. An adhesive agent composition contains an acid-modified polyolefin (A), a multifunctional polyisocyanate curing agent (B), and an organic solvent (C), wherein the acid value of the acid-modified polyolefin (A) is 2-50 mg KOH / g-resin, and the acetone extract ratio is 0.01-2 mass%.

Description

technical field [0001] The present invention relates to an adhesive composition exhibiting good adhesion between a polyolefin resin substrate and a metal substrate, chemical resistance, and formability. More specifically, it relates to an adhesive composition containing an acid-modified polyolefin, a polyfunctional polyisocyanate curing agent, and an organic solvent. In particular, it is related with the binder composition for lithium ion batteries (it abbreviates as LiB hereafter), and the packaging material which is a laminated body containing this binder composition. Background technique [0002] In recent years, LiB, which can be made ultra-thin and miniaturized, has been actively developed as batteries for portable terminal devices such as personal computers and mobile phones, cameras, and satellites. The LiB packaging material is different from the metal cans used in the past. Due to the advantages of light weight and free choice of the shape of the battery, laminates...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/26B32B15/085B32B27/00H01M2/02H01M50/105
CPCB32B15/085B32B27/00C09J123/26Y02E60/10H01M50/105C09J11/00B32B7/12B32B27/06H01M50/10H01M50/116H01M50/121H01M50/124H01M50/193
Inventor 坂田秀行中岛桃子
Owner TOYOBO MC CORP
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