JP2012072321A5

JP2012072321A5 -

Info

Publication number: JP2012072321A5
Application number: JP2010219629A
Authority: JP
Filing date: 2010-09-29
Publication date: 2013-08-29
Anticipated expiration: 2030-09-29

Description

本発明は、下記（Ａ）〜（Ｄ）を含有する接着剤組成物であって、
カルボキシル基含有スチレン系熱可塑性エラストマー（Ａ）と、水酸基価が１５０〜８００ｍｇＫＯＨ／ｇであり、６０℃で液状であって、構造中の水酸基以外の部分が炭化水素のみより成るジオール（Ｂ）と、粘着付与剤（Ｃ）との合計１００重量％中に、前記エラストマー（Ａ）を１０〜８０重量％、前記ジオール（Ｂ）を２〜３０重量％、前記粘着付与剤（Ｃ）を１０〜８０重量％含み、
ポリイソシアネート（Ｄ）を、ポリイソシアネート（Ｄ）のイソシアネート基／前記ジオール（Ｂ）の水酸基＝０．３〜８／１（モル比）の範囲で含む、接着剤組成物に関し、
前記ジオール（Ｂ）の水酸基価は、５００〜８００ｍｇＫＯＨ／ｇであることが好ましく、
前記ジオール（Ｂ）は、２−エチル―１，３−ヘキサンジオール、２，４−ジエチル―１，５−ペンタンジオール、２−ブチル−２−エチル−１，３−プロパンジオール、１，９−ノナンジオール、及び２−メチル−１，８−オクタンジオールからなる群より選ばれる少なくとも一種であることが好ましい。 The present invention is an adhesive composition containing the following (A) to (D),
A carboxyl group-containing styrenic thermoplastic elastomer (A), a diol (B) having a hydroxyl value of 150 to 800 mgKOH / g, liquid at 60 ° C., and having a portion other than the hydroxyl group in the structure consisting of only hydrocarbons The elastomer (A) is 10 to 80% by weight, the diol (B) is 2 to 30% by weight, and the tackifier (C) is 10 to 10% by weight in a total of 100% by weight with the tackifier (C). Including 80% by weight,
The adhesive composition comprising polyisocyanate (D) in a range of isocyanate group of polyisocyanate (D) / hydroxyl group of diol (B) = 0.3 to 8/1 (molar ratio).
The hydroxyl value of the diol (B) is preferably 500 to 800 mgKOH / g,
The diol (B) is 2-ethyl-1,3-hexanediol, 2,4-diethyl-1,5-pentanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,9- It is preferably at least one selected from the group consisting of nonanediol and 2-methyl-1,8-octanediol.

また、本発明は、接着剤層を介して、金属箔と熱融着性フィルムとが積層されてなる積層体であって、
前記接着剤層が、カルボキシル基含有スチレン系熱可塑性エラストマー（Ａ）と、水酸基価が１５０〜８００ｍｇＫＯＨ／ｇであり、６０℃で液状であって、構造中の水酸基以外の部分が炭化水素のみより成るジオール（Ｂ）と、粘着付与剤（Ｃ）との合計１００重量％中に、前記エラストマー（Ａ）を１０〜８０重量％、前記ジオール（Ｂ）を２〜３０重量％、前記粘着付与剤（Ｃ）を１０〜８０重量％含み、
ポリイソシアネート（Ｄ）を、ポリイソシアネート（Ｄ）のイソシアネート基／前記ジオール（Ｂ）の水酸基＝０．３〜８／１（モル比）の範囲で含む、接着剤組成物から形成された接着剤層である、積層体に関し、
金属箔側に他のシート状部材がさらに積層されてなることが好ましい。 Further, the present invention is a laminate in which a metal foil and a heat-fusible film are laminated via an adhesive layer,
The adhesive layer is a carboxyl group-containing styrene-based thermoplastic elastomer (A), has a hydroxyl value of 150 to 800 mgKOH / g, is liquid at 60 ° C., and the portion other than the hydroxyl group in the structure is composed solely of hydrocarbons. 10% to 80% by weight of the elastomer (A) and 2% to 30% by weight of the diol (B) in a total of 100% by weight of the diol (B) and the tackifier (C). 10 to 80% by weight of (C),
Adhesive formed from an adhesive composition containing polyisocyanate (D) in the range of isocyanate group of polyisocyanate (D) / hydroxyl group of diol (B) = 0.3 to 8/1 (molar ratio) Regarding the laminate, which is a layer,
It is preferable that another sheet-like member is further laminated on the metal foil side.

さらに本発明は、金属箔又は熱融着性フィルムの一方の面に、
カルボキシル基含有スチレン系熱可塑性エラストマー（Ａ）と、水酸基価が１５０〜８００ｍｇＫＯＨ／ｇであり、６０℃で液状であり、構造中の水酸基以外の部分が炭化水素のみより成るジオール（Ｂ）と、粘着付与剤（Ｃ）との合計１００重量％中に、前記エラストマー（Ａ）を１０〜８０重量％、前記ジオール（Ｂ）を２〜３０重量％、前記粘着付与剤（Ｃ）を１０〜８０重量％含み、
ポリイソシアネート（Ｄ）を、ポリイソシアネート（Ｄ）のイソシアネート基／前記ジオール（Ｂ）の水酸基＝０．３〜８／１（モル比）の範囲で含む、接着剤組成物を塗工し、未硬化の接着剤層を形成し、
前記未硬化の接着剤層の表面に、熱融着性フィルム又は金属箔を重ね、
前記未硬化の接着剤層を硬化し、金属箔と熱融着性フィルムとを貼り合わせることを特徴とする、金属箔と熱融着性フィルムとの積層体の製造方法に関する。 Furthermore, the present invention provides a metal foil or one surface of a heat-fusible film,
A carboxyl group-containing styrene-based thermoplastic elastomer (A), a diol (B) having a hydroxyl value of 150 to 800 mgKOH / g, being liquid at 60 ° C., and having a portion other than the hydroxyl group in the structure consisting of only hydrocarbons; In a total of 100% by weight with the tackifier (C), the elastomer (A) is 10 to 80% by weight, the diol (B) is 2 to 30% by weight, and the tackifier (C) is 10 to 80%. Including weight percent,
An adhesive composition containing polyisocyanate (D) in the range of isocyanate group of polyisocyanate (D) / hydroxyl group of diol (B) = 0.3 to 8/1 (molar ratio) was applied, and Forming a cured adhesive layer,
On the surface of the uncured adhesive layer, a heat-sealable film or a metal foil is overlaid,
The present invention relates to a method for producing a laminate of a metal foil and a heat-fusible film, wherein the uncured adhesive layer is cured and the metal foil and the heat-fusible film are bonded together.

また、本発明は、電池本体と、前記電池本体の正極と負極にそれぞれ接合されてなる複数の端子と、電池容器と、電解質とを具備する二次電池であって、
前記電池容器が、接着剤層を介して、金属箔と熱融着性フィルムとが積層されてなる積層体を用い、前記熱融着性フィルムが前記電解質に接するものであり、
前記熱融着性フィルムの一部の熱融着によって、前記複数の端子の他の端部を前記電池容器から突出させた状態で、前記電池本体と前記複数の端子と電解質とを前記電池容器内部に密封してなり、
前記接着剤層が、カルボキシル基含有スチレン系熱可塑性エラストマー（Ａ）と、水酸基価が１５０〜８００ｍｇＫＯＨ／ｇであり、６０℃で液状であって、構造中の水酸基以外の部分が炭化水素のみより成るジオール（Ｂ）と、粘着付与剤（Ｃ）との合計１００重量％中に、前記エラストマー（Ａ）を１０〜８０重量％、前記ジオール（Ｂ）を２〜３０重量％、前記粘着付与剤（Ｃ）を１０〜８０重量％含み、
ポリイソシアネート（Ｄ）を、ポリイソシアネート（Ｄ）のイソシアネート基／前記ジオール（Ｂ）の水酸基＝０．３〜８／１（モル比）の範囲で含む、接着剤組成物から形成された接着剤層である、二次電池に関し、
電池容器を形成する積層体は、金属箔側に他のシート状部材をさらに具備する積層体であることが好ましい。 Further, the present invention is a secondary battery comprising a battery main body, a plurality of terminals joined to the positive electrode and the negative electrode of the battery main body, a battery container, and an electrolyte,
The battery container is a laminate in which a metal foil and a heat-fusible film are laminated via an adhesive layer, and the heat-fusible film is in contact with the electrolyte,
The battery main body, the plurality of terminals, and the electrolyte are connected to the battery container in a state where the other ends of the plurality of terminals protrude from the battery container by heat fusion of a part of the heat-fusible film. Sealed inside,
The adhesive layer is a carboxyl group-containing styrene-based thermoplastic elastomer (A), has a hydroxyl value of 150 to 800 mgKOH / g, is liquid at 60 ° C., and the portion other than the hydroxyl group in the structure is composed solely of hydrocarbons. 10% to 80% by weight of the elastomer (A) and 2% to 30% by weight of the diol (B) in a total of 100% by weight of the diol (B) and the tackifier (C). 10 to 80% by weight of (C),
Adhesive formed from an adhesive composition containing polyisocyanate (D) in the range of isocyanate group of polyisocyanate (D) / hydroxyl group of diol (B) = 0.3 to 8/1 (molar ratio) Regarding the secondary battery that is a layer,
It is preferable that the laminated body which forms a battery container is a laminated body which further comprises another sheet-like member on the metal foil side.

Claims

An adhesive composition containing the following (A) to (D),
A carboxyl group-containing styrene-based thermoplastic elastomer (A), the hydroxyl value is 150~800mgKOH / g, a liquid at 60 ° C., the diol portion other than the hydroxyl group in the structure is composed Ri by only hydrocarbons (B ) And a tackifier (C) in a total of 100% by weight, the elastomer (A) is 10 to 80% by weight, the diol (B) is 2 to 30% by weight, and the tackifier (C) is 10 to 80% by weight,
Polyisocyanate (D) is included in the range of isocyanate group of polyisocyanate (D) / hydroxyl group of diol (B) = 0.3 to 8/1 (molar ratio).
Adhesive composition.

The adhesive composition according to claim 1, wherein the diol (B) has a hydroxyl value of 500 to 800 mgKOH / g.

Diol (B) is 2-ethyl-1,3-hexanediol, 2,4-diethyl-1,5-pentanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,9-nonane. The adhesive composition according to claim 2, wherein the adhesive composition is at least one selected from the group consisting of diol and 2-methyl-1,8-octanediol.

A laminate in which a metal foil and a heat-fusible film are laminated via an adhesive layer,
The adhesive layer, the carboxyl group-containing styrene-based thermoplastic elastomer (A), the hydroxyl value is 150~800mgKOH / g, a liquid at 60 ° C., the portion other than the hydroxyl hydrocarbon Motonomi in the structure a good Ri made diol (B), in total 100 wt% of the tackifier (C), the elastomer (a) 10 to 80 wt%, the diol (B) 2 to 30 wt%, the adhesive Containing 10 to 80% by weight of the imparting agent (C),
Adhesive formed from an adhesive composition containing polyisocyanate (D) in the range of isocyanate group of polyisocyanate (D) / hydroxyl group of diol (B) = 0.3 to 8/1 (molar ratio) A laminate that is a layer.

The laminate according to claim 4, wherein another sheet-like member is further laminated on the metal foil side.

On one side of the metal foil or heat-fusible film,
A carboxyl group-containing styrenic thermoplastic elastomer (A), a diol (B) having a hydroxyl value of 150 to 800 mgKOH / g, liquid at 60 ° C., and having a portion other than the hydroxyl group in the structure consisting of only hydrocarbons The elastomer (A) is 10 to 80% by weight, the diol (B) is 2 to 30% by weight, and the tackifier (C) is 10 to 10% by weight in a total of 100% by weight with the tackifier (C). Including 80% by weight,
An adhesive composition containing polyisocyanate (D) in the range of isocyanate group of polyisocyanate (D) / hydroxyl group of diol (B) = 0.3 to 8/1 (molar ratio) was applied, and Forming a cured adhesive layer,
On the surface of the uncured adhesive layer, a heat-sealable film or a metal foil is overlaid,
A method for producing a laminate of a metal foil and a heat-fusible film, wherein the uncured adhesive layer is cured and the metal foil and the heat-fusible film are bonded together.

A secondary battery comprising a battery body, a plurality of terminals each joined to a positive electrode and a negative electrode of the battery body, a battery container, and an electrolyte,
The battery container is a laminate in which a metal foil and a heat-fusible film are laminated via an adhesive layer, and the heat-fusible film is in contact with the electrolyte,
The battery main body, the plurality of terminals, and the electrolyte are connected to the battery container in a state where the other ends of the plurality of terminals protrude from the battery container by heat fusion of a part of the heat-fusible film. Sealed inside,
The adhesive layer is a carboxyl group-containing styrene-based thermoplastic elastomer (A) and a diol (150 to 800 mg KOH / g, liquid at 60 ° C., wherein the portion other than the hydroxyl group in the structure is composed solely of hydrocarbons ( B) and tackifier (C) in a total of 100% by weight, the elastomer (A) is 10 to 80% by weight, the diol (B) is 2 to 30% by weight, and the tackifier (C). 10 to 80% by weight,
Adhesive formed from an adhesive composition containing polyisocyanate (D) in the range of isocyanate group of polyisocyanate (D) / hydroxyl group of diol (B) = 0.3 to 8/1 (molar ratio) Layer,
Secondary battery.

The secondary battery according to claim 7, wherein the laminate forming the battery container is a laminate further comprising another sheet-like member on the metal foil side.