JPH09279115A - Saturated polyester adhesive - Google Patents

Saturated polyester adhesive

Info

Publication number
JPH09279115A
JPH09279115A JP9369596A JP9369596A JPH09279115A JP H09279115 A JPH09279115 A JP H09279115A JP 9369596 A JP9369596 A JP 9369596A JP 9369596 A JP9369596 A JP 9369596A JP H09279115 A JPH09279115 A JP H09279115A
Authority
JP
Japan
Prior art keywords
resin
adhesive
branched polyester
epoxy resin
main component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9369596A
Other languages
Japanese (ja)
Inventor
Hiroyuki Hagiwara
裕之 萩原
Yoshikatsu Mikami
喜勝 三上
Koji Himori
宏次 檜森
Masakatsu Suzuki
正勝 鈴木
Yasushi Kojima
靖 小島
Masaya Okawa
昌也 大川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Denko Materials Co Ltd
Original Assignee
Hitachi Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP9369596A priority Critical patent/JPH09279115A/en
Publication of JPH09279115A publication Critical patent/JPH09279115A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To obtain the subject adhesive comprising branched polyester resins having specific groups as a main component and a multifunctional epoxy resin as a curing agent and excellent in room temperature adhesivity, high temperature adhesivity, storage stability, etc. SOLUTION: This saturated polyester adhesive comprises (A) one or more kinds of branched polyester resins, to whose main chain side chains having terminal carboxyl groups are partially introduced, as a main component and (B) a multifunctional epoxy resin as a curing agent. The glass transition points Tg of the branched polyester resins in the blend of the component A preferably have a difference of >=5 deg.C therebetween. The Tg of the resin having the highest Tg is preferably >=16 deg.C, and the Tg of the resin having the lowest Tg is preferably <16 deg.C. The carboxyl group concentration of the resins in the component A is 2.01-10, preferably 2.05-3.5, functional groups/molecule. The component B is a di- or more-functional epoxy resin, and is preferably added in an amount of 0.01-30 pts.wt. based on the main component.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、室温接着性、高温
接着性、保存安定性等に優れた飽和ポリエステル系接着
剤に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a saturated polyester adhesive having excellent room temperature adhesiveness, high temperature adhesiveness, storage stability and the like.

【0002】[0002]

【従来の技術】飽和ポリエステル系接着剤は一般に、熱
可塑性高分子量の直鎖型ポリエステル樹脂を主成分とし
たものであり、ポリエステル、ポリ塩化ビニル、ポリカ
ーボネート、セルロースアセテート、ABS等のプラス
チック材料、アルミニウム、銅、鋼、ステンレス等の金
属材料、ポリエステル繊維等の各種繊維材料に対して優
れた接着性、塗膜性を有している。熱可塑性ポリエステ
ルであるため、非常に短時間で接着できる、可とう性に
優れている等の長所はあるものの、一方で架橋点が分子
両末端のみと少ないため、室温以上の高温雰囲気あるい
は高温高湿下で使用すると接着力の低下が大きく、接着
信頼性に欠けるといった短所があった。また、上記被着
体同士の接着性においては、強固というイメージには乏
しく、長時間の信頼性に不安があった。そこで、直鎖型
ポリエステル両末端の水酸基(一部熱的酸化によりカル
ボキシル基に変化)を適当な硬化剤で硬化することによ
り、接着信頼性を改善する以下に示す特許が提案されて
いる。
2. Description of the Related Art Saturated polyester-based adhesives are generally composed mainly of a thermoplastic high-molecular weight linear polyester resin, and include polyester, polyvinyl chloride, polycarbonate, cellulose acetate, plastic materials such as ABS, and aluminum. It has excellent adhesion and coating properties to metal materials such as copper, steel, stainless steel, and various fiber materials such as polyester fiber. Since it is a thermoplastic polyester, it has the advantages of being able to bond in a very short time and being excellent in flexibility, but on the other hand, since it has only a few cross-linking points at both molecular ends, it has a high temperature atmosphere above room temperature or high temperature. When it is used in a damp environment, the adhesive strength is greatly reduced, and the adhesive reliability is poor. In addition, regarding the adhesiveness between the adherends, the image of being strong is poor, and there is concern about long-term reliability. Therefore, the following patents have been proposed in which the adhesion reliability is improved by curing the hydroxyl groups at both ends of the linear polyester (partially converted to carboxyl groups by thermal oxidation) with an appropriate curing agent.

【0003】(1)過酸化物/酸化マグネシウムによ
り、飽和ポリエステルをパーオキサイドで架橋するもの
(特開昭51−83640号公報) (2)アミノ樹脂を添加し、水酸基とのメチロールエー
テル化反応により硬化するもの(特開昭64−5727
0号公報、特開平3−8391号公報、特開平6−99
619号公報) (3)イソシアネートを添加し、水酸基との付加反応に
より硬化するもの(特開昭63−295690号公報、
特開昭63−25470号公報、特開昭51−3718
9号公報、特開平4−292613号公報、特開平3−
8391号公報、特公平6−99619号公報) (4)電子線官能性の不飽和結合を有する化合物を添加
し、電子線を照射して間接的に硬化するもの(特開昭6
1−203331号公報) (5)シランカップリング剤を添加し、脱アルコール反
応により硬化するもの(特公昭63−36945号公
報、特開平3−64538号公報、特開平6−2718
34号公報) (6)エポキシ化合物を添加し、水酸基との付加反応に
より硬化するもの(特公昭64−57270号公報、特
公平6−99619号公報)
(1) Peroxide / magnesium oxide crosslinks saturated polyester with peroxide (JP-A-51-83640) (2) Amino resin is added and methylol etherification reaction with a hydroxyl group is carried out. What is hardened (Japanese Patent Laid-Open No. 64-5727)
0, JP 3-8391 A, JP 6-99
(619) (3) A compound which is cured by addition reaction of isocyanate with a hydroxyl group (JP-A-63-295690).
JP-A-63-25470, JP-A-51-3718
No. 9, JP-A-4-292613, and JP-A-3-
(8391 gazette, Japanese Patent Publication No. 6-99619 gazette) (4) A compound having an electron beam functional unsaturated bond is added, and the compound is indirectly cured by being irradiated with an electron beam (Japanese Patent Laid-Open No. Sho 6-96).
(1) JP-A-203331) (5) What is cured by a dealcohol reaction by adding a silane coupling agent (JP-B-63-36945, JP-A-3-64538, JP-A-6-2718)
34) (6) A compound which is added with an epoxy compound and is cured by an addition reaction with a hydroxyl group (Japanese Patent Publication No. Sho 57-57270 and Japanese Patent Publication No. Heisei 6-99619).

【0004】[0004]

【発明が解決しようとする課題】しかしながら、従来技
術に示した(1)については、過酸化物含有のため樹脂
のポットライフが短いという問題がある。(2)につい
ては、硬化反応に高温長時間を要するため量産性に欠け
る。(3)に関しては、(1)と同様な問題が考えられ
る。(4)については、汎用電子線の透過深さが102
ミクロンオーダであるため、厚物同志の接着ができな
い。また、不飽和結合を有する化合物を多量に添加する
必要があり、接着力の低下を招いてしまう。(5)につ
いては、シランカップリング剤のアルコキシル基とヒド
ロキシル基との反応は、適度な温度で反応するものの、
ポリエステル樹脂両末端の水酸基濃度が低く期待した架
橋効果が得られない。(6)については、エポキシ樹脂
のグリシジル基と水酸基との反応は高温長時間を要する
ため、耐熱性の低い材料の接着には適用できず、また量
産性に欠ける。本発明はかかる状況に鑑みなされたもの
であって、室温接着性、高温接着性、保存安定性等に優
れ、長期にわたり高い接着信頼性を持続する接着剤を提
供することを目的とする。
However, with respect to (1) shown in the prior art, there is a problem that the pot life of the resin is short because the peroxide is contained. With respect to (2), the curing reaction requires a high temperature and a long time, so that the mass productivity is insufficient. Regarding (3), the same problem as (1) can be considered. Regarding (4), the penetration depth of general-purpose electron beams is 10 2
Since it is on the order of microns, it is not possible to bond thick materials together. In addition, it is necessary to add a large amount of a compound having an unsaturated bond, resulting in a decrease in adhesive strength. Regarding (5), although the reaction between the alkoxyl group of the silane coupling agent and the hydroxyl group reacts at an appropriate temperature,
The concentration of hydroxyl groups at both ends of the polyester resin is low, and the expected crosslinking effect cannot be obtained. With regard to (6), the reaction between the glycidyl group and the hydroxyl group of the epoxy resin requires a high temperature and a long time, so that it cannot be applied to adhesion of a material having low heat resistance, and mass productivity is insufficient. The present invention has been made in view of such circumstances, and an object of the present invention is to provide an adhesive that is excellent in room temperature adhesiveness, high temperature adhesiveness, storage stability and the like and that maintains high adhesive reliability for a long period of time.

【0005】[0005]

【課題を解決するための手段】かかる目的は本発明によ
れば、主鎖の一部に末端カルボキシル基を有する側鎖を
導入した分岐型ポリエステル樹脂を1種類または2種類
以上ブレンドしたものを主成分とし、これに硬化剤とし
て多官能エポキシ樹脂を添加した飽和ポリエステル系接
着剤ににより達成される。
According to the present invention, the main object is to provide a branched polyester resin having a side chain having a terminal carboxyl group introduced into a part of the main chain, or a blend of one or more branched polyester resins. This is achieved by a saturated polyester-based adhesive in which a polyfunctional epoxy resin is added as a curing agent as a component.

【0006】[0006]

【発明の実施の形態】本発明に用いられる分岐型ポリエ
ステル樹脂は、両末端に水酸基を有する直鎖型ポリエス
テル樹脂骨格の一部から枝分かれし、その側鎖末端にカ
ルボキシル基が付与されている構造となっている。かか
る樹脂は、例えば特願平6−208529号明細書記載
の方法で製造される。被着体種、用途により、分岐型ポ
リエステル樹脂は、1種類または2種類以上ブレンドし
て使用される。ブレンド物においては、個々の分岐型ポ
リエステル樹脂のTgの差が各々5℃以上異なり、かつ
最も高い樹脂のTgが16℃以上および最も低い樹脂の
Tgが16℃未満であることが必要である。この条件を
外れると、期待した接着性が得られない。すなわち、低
Tgおよび高Tgの分岐型ポリエステル樹脂とをブレン
ドすることにより、広範囲な温度領域で安定した接着性
を得ることができる。
BEST MODE FOR CARRYING OUT THE INVENTION The branched polyester resin used in the present invention has a structure in which a straight-chain polyester resin skeleton having a hydroxyl group at both ends is branched from a part thereof and a carboxyl group is provided at a side chain end. It has become. Such a resin is produced, for example, by the method described in Japanese Patent Application No. 6-208529. The branched polyester resin may be used alone or as a blend of two or more depending on the type of adherend and the application. In the blend, the difference in Tg between the individual branched polyester resins must differ by 5 ° C. or more, and the Tg of the highest resin is 16 ° C. or more and the Tg of the lowest resin must be less than 16 ° C. If this condition is not satisfied, the expected adhesiveness cannot be obtained. That is, by blending with a branched polyester resin having a low Tg and a high Tg, stable adhesiveness can be obtained in a wide temperature range.

【0007】分岐型ポリエステル樹脂のカルボキシル基
濃度が、1分子当たりの官能基数で2.01から10、
好ましくは2.05から3.5であることが必要であ
る。その範囲を下回ると架橋点が少なく期待した架橋効
果が得られにくく、また上回ると側鎖のカルボキシル基
と両末端水酸基との自己重合によりゲル化してしまう。
また、分岐型ポリエステル樹脂の分子量については、数
平均分子量で5000以上であり、5000未満では樹
脂自体の凝集力が不足して、顕著に高い接着性が得られ
ない。ここで、本発明において「Tg」は一般的なDS
Cの測定によって得られたものであり、「数平均分子
量」はゲルパーミュエーションクロマトグラフィーを利
用し、標準ポリスチレンの検量線を使用して算出したも
のである。本接着剤は、上記の分岐型ポリエステル樹脂
の他に多官能エポキシ樹脂が必須である。高次の架橋構
造をとるためには、多官能エポキシ樹脂は2官能以上が
好ましく、4官能のものが最も好適に用いられる。多官
能エポキシ樹脂の添加量は、主成分に対して0.01か
ら30部の範囲で使用するのが好ましい。
The carboxyl group concentration of the branched polyester resin is 2.01 to 10 in terms of the number of functional groups per molecule,
It should preferably be 2.05 to 3.5. If it is less than the range, the number of crosslinking points is small and the expected crosslinking effect is difficult to obtain, and if it exceeds the range, gelation occurs due to self-polymerization of the side chain carboxyl group and hydroxyl groups at both ends.
Regarding the molecular weight of the branched polyester resin, the number average molecular weight is 5,000 or more, and if it is less than 5,000, the cohesive force of the resin itself is insufficient and remarkably high adhesiveness cannot be obtained. Here, in the present invention, “Tg” is a general DS.
It was obtained by measuring C, and the "number average molecular weight" was calculated by using gel permeation chromatography and using a calibration curve of standard polystyrene. This adhesive requires a multifunctional epoxy resin in addition to the branched polyester resin described above. In order to have a higher-order crosslinked structure, the polyfunctional epoxy resin is preferably bifunctional or higher, and tetrafunctional is most preferably used. The polyfunctional epoxy resin is preferably added in an amount of 0.01 to 30 parts with respect to the main component.

【0008】被着体としては、ポリエステル、ポリ塩化
ビニル、ポリカーボネート、セルロースアセテート、A
BS等のプラスチック材料、アルミニウム、銅、鋼、ス
テンレス等の金属材料、ポリエステル繊維等の各種繊維
材料が好適に用いられる。その他、ポリエチレン、ポリ
プロピレン、エチレン−酢酸ビニル共重合体等のポリオ
レフィンまたはオレフィンを主成分とする共重合体若し
くはこれらの混合物からなる材料やポリビニルアルコー
ル、ナイロン等の熱可塑性材料さらに、ポリイミド、ポ
リスチレン、エンジニアリングプラスチック等にも適用
することができる。
As the adherend, polyester, polyvinyl chloride, polycarbonate, cellulose acetate, A
Plastic materials such as BS, metal materials such as aluminum, copper, steel and stainless steel, and various fiber materials such as polyester fibers are preferably used. Other materials such as polyethylene, polypropylene, polyolefins such as ethylene-vinyl acetate copolymer, copolymers containing olefin as a main component or a mixture thereof, thermoplastic materials such as polyvinyl alcohol and nylon, polyimide, polystyrene, engineering It can also be applied to plastics and the like.

【0009】なお、より高い接着性を得るために、被着
体表面にコロナ処理等の汎用的な表面処理を行うことが
好ましい。本接着剤には必要に応じ、臭素化芳香族化合
物やリン化合物(難燃剤)、ガラス繊維や炭素繊維(補
強材)、タルクや炭酸カルシウム(充填剤)、オリゴス
チレンや石油樹脂(粘度調整剤)、フェノール樹脂やキ
シレン樹脂(粘着付与剤)、ヒンダードフェノール樹脂
やリン樹脂(酸化防止剤)、ベンゾフェノン系化合物や
チヌビン系化合物(紫外線吸収剤)、シランカップリン
グ剤やチタネートカップリング剤(接着性改質剤)等の
各種添加剤を併用してもよい。本発明の飽和ポリエステ
ル系接着剤に関する技術的なポイントは、分岐型ポリエ
ステル樹脂を使用し、これに硬化剤として多官能エポキ
シ樹脂を添加したことである。架橋点の多い分岐型ポリ
エステル樹脂を硬化剤で3次元網目化しているため、高
温接着性、高温高湿処理後の接着性の低下を抑制させる
ことができた。さらに、本硬化剤を使用することによ
り、硬化反応が80〜150℃程度で起こるため、低温
短時間接着が可能である。また、室温では硬化反応が殆
ど進行しないため、長期の保存安定性に優れている。
In order to obtain higher adhesiveness, it is preferable to subject the surface of the adherend to general-purpose surface treatment such as corona treatment. If necessary, this adhesive contains brominated aromatic compounds and phosphorus compounds (flame retardants), glass fibers and carbon fibers (reinforcing materials), talc and calcium carbonate (fillers), oligostyrene and petroleum resins (viscosity modifiers). ), Phenol resin or xylene resin (tackifier), hindered phenol resin or phosphorus resin (antioxidant), benzophenone compound or tinuvin compound (ultraviolet absorber), silane coupling agent or titanate coupling agent (adhesion) You may use together various additives, such as a property modifier. A technical point regarding the saturated polyester adhesive of the present invention is that a branched polyester resin is used and a polyfunctional epoxy resin is added as a curing agent to the branched polyester resin. Since the branched polyester resin having many cross-linking points was three-dimensionally meshed with the curing agent, it was possible to suppress the deterioration of the high temperature adhesiveness and the adhesiveness after the high temperature and high humidity treatment. Furthermore, since the curing reaction occurs at about 80 to 150 ° C. by using the present curing agent, low temperature and short time adhesion is possible. Further, since the curing reaction hardly progresses at room temperature, it has excellent long-term storage stability.

【0010】[0010]

【実施例】以下、本発明を実施例に基づいて説明する
が、本発明の範囲はこれら実施例によって何ら限定され
るものではない。 実施例1 <接着剤配合> ・分岐型ポリエステル樹脂ブレンド物:樹脂A/樹脂B
=50/50部 物性 樹脂A 樹脂B 分子量 Mw 38,000 35,000 Mn 13,000 11,000 Mw/Mn 2.9 3.2 Tg(℃) 45 15 カルボキシル基官能基数 2.5 3.0 ・多官能エポキシ樹脂:5部(ダウ・ケミカル日本
(株)TACTIX 742 3官能) 上記接着剤のトルエン/MEK=8/2溶液(固形分3
0%)を基材に乾燥後の接着剤厚が20μmとなるよう
に塗布した。接着剤を塗布した基材の接着剤面と別の同
種の基材(接着剤なし)とを熱ロールラミネータにより
接着した。接着条件としては、ロール温度:120℃、 ロール速度:0.5m/min 圧力:5kgf/cm2 (感圧紙換算) ロール材質:シリコーンゴム製。 基材としては、 ・PETフィルム(ダイアホイル(株)250μm厚、
両面コロナ処理54dyn/cm以上) ・SUS箔(東洋精箔(株)20μm厚、SUS−30
4、脱脂処理) ・PC(ポリカーボネート)フィルム(帝人(株)10
0μm厚、未処理) 室温接着力、100℃接着力、高温高湿処理後の接着
力、はんだ耐熱性、ポットライフを測定し、結果を表1
に示す。なお、分岐型ポリエステル樹脂としての樹脂
A、樹脂Bは特願平6−208529号明細書記載の方
法で製造した。
EXAMPLES The present invention will be described below based on examples, but the scope of the present invention is not limited to these examples. Example 1 <Adhesive formulation> -Branched polyester resin blend: resin A / resin B
= 50/50 parts Physical properties Resin A Resin B Molecular weight Mw 38,000 35,000 Mn 13,000 11,000 Mw / Mn 2.9 3.2 Tg (° C) 45 15 Carboxyl group functional group number 2.5 3.0・ Multifunctional epoxy resin: 5 parts (TACTIX 742 trifunctional, Dow Chemical Japan KK) Toluene / MEK = 8/2 solution of the above adhesive (solid content 3
0%) was applied to the substrate so that the adhesive thickness after drying would be 20 μm. The adhesive surface of the base material coated with the adhesive and another base material of the same type (without the adhesive) were bonded by a hot roll laminator. The bonding conditions are: roll temperature: 120 ° C., roll speed: 0.5 m / min, pressure: 5 kgf / cm 2. (Converted to pressure sensitive paper) Roll material: Made of silicone rubber. As the base material, a PET film (Dia foil Co., Ltd. 250 μm thick,
Double-sided corona treatment 54 dyn / cm or more) SUS foil (Toyo Seifoil Co., Ltd. 20 μm thick, SUS-30)
4. Degreasing treatment ・ PC (polycarbonate) film (Teijin Ltd. 10
0 μm thickness, untreated) Room temperature adhesive strength, 100 ° C. adhesive strength, adhesive strength after high temperature and high humidity treatment, solder heat resistance, pot life were measured, and the results are shown in Table 1.
Shown in Resin A and resin B as branched polyester resins were produced by the method described in Japanese Patent Application No. 6-208529.

【0011】実施例2 <接着剤配合> ・分岐型ポリエステル樹脂ブレンド物:樹脂A/樹脂B
=50/50部 ・多官能エポキシ樹脂:5部(油化シェルエポキシ
(株)エピコート1031S 4官能) 上記接着剤に変更した以外は、実施例1と同じ。
Example 2 <Adhesive formulation> Branched polyester resin blend: resin A / resin B
= 50/50 parts Polyfunctional epoxy resin: 5 parts (Yukaka Shell Epoxy Co., Ltd. Epicoat 1031S tetrafunctional) Same as Example 1 except that the above adhesive was changed.

【0012】実施例3 <接着剤配合> ・分岐型ポリエステル樹脂ブレンド物:樹脂A/樹脂B
=50/50部 ・多官能エポキシ樹脂:5部(油化シェルエポキシ
(株)エピコート1031S 4官能) 上記接着剤に変更した以外は、実施例1と同じ。
Example 3 <Adhesive Blend> Branched polyester resin blend: resin A / resin B
= 50/50 parts Polyfunctional epoxy resin: 5 parts (Yukaka Shell Epoxy Co., Ltd. Epicoat 1031S tetrafunctional) Same as Example 1 except that the above adhesive was changed.

【0013】実施例3 <接着剤配合> ・分岐型ポリエステル樹脂ブレンド物:樹脂A/樹脂B
=50/50部 ・多官能エポキシ樹脂:0.1部(ダウケミカル日本
(株)TACTIX742 3官能) 上記接着剤に変更した以外は、実施例1と同じ。
Example 3 <Adhesive Blend> Branched polyester resin blend: resin A / resin B
= 50/50 parts Polyfunctional epoxy resin: 0.1 part (Dow Chemical Japan Co., Ltd. TACTIX742 trifunctional) The same as Example 1 except that the above adhesive was changed.

【0014】<接着剤配合> ・分岐型ポリエステル樹脂ブレンド物:樹脂A/樹脂B
=50/50部 ・多官能エポキシ樹脂:20部(ダウケミカル日本
(株)TACTIX742 3官能) 上記接着剤に変更した以外は、実施例1と同じ。
<Adhesive formulation> -Branched polyester resin blend: resin A / resin B
= 50/50 parts Polyfunctional epoxy resin: 20 parts (Dow Chemical Japan Co., Ltd. TACTIX742 trifunctional) The same as Example 1 except that the above adhesive was changed.

【0015】[0015]

【表1】 [Table 1]

【0016】[0016]

【表2】 [Table 2]

【0017】比較例1 <接着剤配合> ・分岐型ポリエステル樹脂ブレンド物:樹脂A/樹脂B
=50/50部 上記接着剤に変更した以外は、実施例1と同じ。室温接
着力、100℃接着力、高温高湿処理後の接着力、はん
だ耐熱性、ポットライフを測定し、結果を表2に示す。
Comparative Example 1 <Adhesive Blend> Branched polyester resin blend: resin A / resin B
= 50/50 parts The same as Example 1 except that the above adhesive was changed. Room temperature adhesive strength, 100 ° C. adhesive strength, adhesive strength after high temperature and high humidity treatment, solder heat resistance, and pot life were measured, and the results are shown in Table 2.

【0018】比較例2 ・直鎖型ポリエステル樹脂C:100部(東洋紡績
(株)バイロン300) 上記接着剤に変更した以外は、実施例1と同じ。 物性 樹脂C 分子量 Mn 20,000〜25,000 Tg(℃) 7 カルボキシル基官能基数 0
Comparative Example 2 Linear polyester resin C: 100 parts (Toyobo Co., Ltd. Byron 300) Same as Example 1 except that the above adhesive was changed. Physical properties Resin C Molecular weight Mn 20,000 to 25,000 Tg (° C.) 7 Carboxyl functional group number 0

【0019】比較例3 <接着剤配合> ・直鎖型ポリエステル樹脂C:100部(東洋紡績
(株)バイロン300) ・ポリイソシアネート:5部(住友バイエルウレタン
(株)スミジュールN−75) 上記接着剤に変更した以外は、実施例1と同じ。
Comparative Example 3 <Adhesive Blending> -Linear polyester resin C: 100 parts (Toyobo Co., Ltd. Byron 300) -Polyisocyanate: 5 parts (Sumitomo Bayer Urethane Co., Ltd. Sumijour N-75) Same as Example 1 except that the adhesive was changed.

【0020】比較例4 <接着剤配合> ・分岐型ポリエステル樹脂ブレンド物:樹脂A/樹脂B
=50/50部 ・ポリイソシアネート:5部(住友バイエルウレタン
(株)スミジュールN−75) 上記接着剤に変更した以外は、実施例1と同じ。
Comparative Example 4 <Adhesive Blend> Branched polyester resin blend: resin A / resin B
= 50/50 parts Polyisocyanate: 5 parts (Sumitomo Bayer Urethane Co., Ltd. Sumidule N-75) Same as Example 1 except that the above adhesive was changed.

【0021】比較例5 <接着剤配合> ・市販ポリエステル系接着剤(ソニーケミカル(株)S
C608Z) 上記接着剤に変更した以外は、実施例1と同じ。
Comparative Example 5 <Adhesive Blend> Commercially available polyester adhesive (S by Sony Chemical Co., Ltd.)
C608Z) Same as Example 1 except that the above adhesive was changed.

【0022】比較例6 <接着剤配合> ・市販ポリエステル系接着剤(東亜合成化学工業(株)
アロンメルトPES−320S30) 上記接着剤に変更した以外は、実施例1と同じ。
Comparative Example 6 <Adhesive Blend> Commercially available polyester adhesive (Toagosei Kagaku Kogyo Co., Ltd.)
Aronmelt PES-320S30) Same as Example 1 except that the above adhesive was used.

【0023】[0023]

【発明の効果】本発明の飽和ポリエステル系接着剤は、
主鎖の一部に末端カルボキシル基を有する側鎖を導入し
た分岐型ポリエステル樹脂を1種類または2種類以上ブ
レンドしたものを主成分とし、これに多官能エポキシ樹
脂を添加した構成としたので、室温接着性、高温接着
性、保存安定性等に優れているため、長期にわたり高い
接着信頼性を持続させることができる。
The saturated polyester adhesive of the present invention is
The main component is a branched polyester resin in which one or more branched polyester resins having a side chain having a terminal carboxyl group introduced into a part of the main chain is blended, and a multifunctional epoxy resin is added to the main component. Since it has excellent adhesiveness, high-temperature adhesiveness, storage stability, etc., high adhesive reliability can be maintained for a long time.

フロントページの続き (72)発明者 鈴木 正勝 茨城県下館市大字五所宮1150番地 日立化 成工業株式会社五所宮工場内 (72)発明者 小島 靖 茨城県鹿島郡波崎町大字砂山五番一 日立 化成工業株式会社鹿島工場内 (72)発明者 大川 昌也 茨城県鹿島郡波崎町大字砂山五番一 日立 化成工業株式会社鹿島工場内Front page continued (72) Inventor Masakatsu Suzuki 1150 Gozamiya, Shimodate, Ibaraki Hitachi Goseimiya Factory (72) Inventor Yasushi Kojima Gobanichi Hayama, Kashima-gun, Ibaraki Prefecture Goseiichi Sunayama Hitachi Chemical Industrial Co., Ltd. Kashima Plant (72) Inventor Masaya Okawa Kago Factory, Kashima-gun, Ibaraki Prefecture

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】主鎖の一部に末端カルボキシル基を有する
側鎖を導入した分岐型ポリエステル樹脂を1種類または
2種類以上ブレンドしたものを主成分とし、これに硬化
剤として多官能エポキシ樹脂を添加した飽和ポリエステ
ル系接着剤。
1. A main component is a blend of one or more branched polyester resins in which a side chain having a terminal carboxyl group is introduced into a part of the main chain, and a polyfunctional epoxy resin as a curing agent is added to the main component. Saturated polyester adhesive added.
【請求項2】ブレンドした分岐型ポリエステル樹脂のT
g差が各々5℃以上異なり、かつ最も高い樹脂のTgが
16℃以上および最も低い樹脂のTgが16℃未満であ
ることを特徴とする請求項1に記載の接着剤。
2. The T of a blended branched polyester resin.
The adhesive according to claim 1, wherein g differences differ by 5 ° C. or more, and the highest resin has a Tg of 16 ° C. or more and the lowest resin has a Tg of less than 16 ° C. 3.
【請求項3】分岐型ポリエステル樹脂のカルボキシル基
濃度が、1分子当たりの官能基数で2.01から10、
好ましくは2.05から3.5であることを特徴とする
請求項1または2に記載の接着剤。
3. The carboxyl group concentration of the branched polyester resin is 2.01 to 10 in terms of the number of functional groups per molecule,
The adhesive according to claim 1 or 2, which is preferably 2.05 to 3.5.
【請求項4】分岐型ポリエステル樹脂の分子量が数平均
分子量(Mn)で5000以上であることを特徴とする
請求項1、2または3に記載の接着剤。
4. The adhesive according to claim 1, wherein the branched polyester resin has a number average molecular weight (Mn) of 5,000 or more.
【請求項5】多官能エポキシ樹脂の官能基が2官能以上
であり、添加量が主成分に対して0.01から30部で
あることを特徴とする請求項1乃至4のいずれかに記載
の接着剤。
5. The functional group of the polyfunctional epoxy resin is bifunctional or more, and the addition amount is 0.01 to 30 parts with respect to the main component, according to any one of claims 1 to 4. Glue.
JP9369596A 1996-04-16 1996-04-16 Saturated polyester adhesive Pending JPH09279115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9369596A JPH09279115A (en) 1996-04-16 1996-04-16 Saturated polyester adhesive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9369596A JPH09279115A (en) 1996-04-16 1996-04-16 Saturated polyester adhesive

Publications (1)

Publication Number Publication Date
JPH09279115A true JPH09279115A (en) 1997-10-28

Family

ID=14089546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9369596A Pending JPH09279115A (en) 1996-04-16 1996-04-16 Saturated polyester adhesive

Country Status (1)

Country Link
JP (1) JPH09279115A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029797A1 (en) * 1997-12-09 1999-06-17 Toagosei Co., Ltd. Hot-melt adhesive composition and resin-laminated ic cards
JP2002121525A (en) * 2000-10-12 2002-04-26 Hitachi Chem Co Ltd Adhesive composition, adhesive film, interconnection substrate for mounting semiconductor and semiconductor device
US20120148849A1 (en) * 2010-12-10 2012-06-14 Hua Fan Barrier film or fabric

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029797A1 (en) * 1997-12-09 1999-06-17 Toagosei Co., Ltd. Hot-melt adhesive composition and resin-laminated ic cards
JP2002121525A (en) * 2000-10-12 2002-04-26 Hitachi Chem Co Ltd Adhesive composition, adhesive film, interconnection substrate for mounting semiconductor and semiconductor device
US20120148849A1 (en) * 2010-12-10 2012-06-14 Hua Fan Barrier film or fabric

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