JP2003277706A - Adhesive composition - Google Patents
Adhesive compositionInfo
- Publication number
- JP2003277706A JP2003277706A JP2002089236A JP2002089236A JP2003277706A JP 2003277706 A JP2003277706 A JP 2003277706A JP 2002089236 A JP2002089236 A JP 2002089236A JP 2002089236 A JP2002089236 A JP 2002089236A JP 2003277706 A JP2003277706 A JP 2003277706A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- adhesive composition
- parts
- vinyl acetate
- ethylene
- 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.)
- Withdrawn
Links
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、塩化ビニル樹脂化
粧合板のように塩化ビニル樹脂シートを接着する際に好
適に用いられる接着剤組成物に関する
【従来の技術】
【０００２】酢酸ビニル樹脂系エマルジョンは、接着剤
（紙・木材) ・塗料・コーティング剤等の広い用途に使
用されている。しかし、通常の酢酸ビニル樹脂系エマル
ジョンでは、上記塩化ビニル樹脂化粧合板を得るため
の、合板に塩化ビニル樹脂シートを接着するのは困難で
あった。そこでエチレン−酢酸ビニル共重合体エマルジ
ョンにトルエンを添加する方法が試みられている。この
方法では被着体への接着性は向上するが、トルエンによ
る溶剤臭の発生が避けられず作業環境上好ましいもので
はなかった。また、トルエンを含有したエチレン−酢酸
ビニル共重合体エマルジョンはＰＲＴＲ法（化学物質管
理促進法）の規制対象にも該当することとなる。
【０００３】
【発明が解決しようとする課題】本発明は、上記従来の
塩化ビニル樹脂シート用のエチレン−酢酸ビニル共重合
体系接着剤の問題点に鑑みてなされたもので、トルエン
を含まず、従ってＰＲＴＲ法の規制対象には該当しない
が、塩化ビニル樹脂シートと合板との接着性が良好な接
着剤組成物を提供することを目的とする。
【課題を解決するための手段】
【０００４】上記目的を達成するために、本発明は、エ
チレン−酢酸ビニル共重合体エマルジョンの樹脂分１０
０重量部に対してジカルボン酸ジエステルが３重量部以
上含有されている接着剤組成物を提供する。
【０００５】本発明において用いられるエチレン−酢酸
ビニル共重合体エマルジョンは、例えば、ポリビニルア
ルコール等を保護コロイドとし、ヒドロキシエチルセル
ロースのようなセルロース系誘導体や界面活性剤等を乳
化分散剤として併用し、エチレンと酢酸ビニルモノマー
とを乳化重合法により共重合して得られる。上記エチレ
ン−酢酸ビニル共重合体は、例えばカルボキシル基、エ
ポキシ基、スルフォン酸基、水酸基、メチロール基、ア
ルコシキ酸基等の官能基を有するビニルモノマーが、本
発明の目的達成を阻害しない程度に、更に共重合された
ものであってもよい。
【０００６】上記エチレン−酢酸ビニル共重合体におけ
るエチレン含有量は、好ましくは１５〜４０重量％とさ
れる。１５重量％未満では、接着性が低下するおそれが
あり、４０重量％を越えると工業製品としての安定的入
手が困難となる場合がある。
【０００７】本発明において用いられるジカルボン酸ジ
エステルは、例えば、脂肪酸系エステルが挙げられる。
具体的には、コハク酸ジメチル、コハク酸ジエチル、コ
ハク酸ジブチル等の、コハク酸の低級アルコールエステ
ル、グルタル酸ジメチル、グルタル酸ジエチル、グルタ
ル酸ジブチル等の、グルタル酸の低級アルコールエステ
ル、アジピン酸ジメチル、アジピン酸ジエチル、アジピ
ン酸ジブチル等の、アジピン酸の低級アルコールエステ
ル、などが挙げられ、特に、コハク酸ジメチル、グルタ
ル酸ジメチル、アジピン酸ジメチル等が好ましく用いら
れる。
【０００８】本発明の接着剤組成物におけるジカルボン
酸ジエステルの含有量は、エチレン−酢酸ビニル共重合
体エマルジョンの樹脂分１００重量部に対して３重量部
以上必要であり、好ましくは５〜１５重量部である。ジ
カルボン酸ジエステルの含有量が３重量部未満では、塩
化ビニル樹脂シートに対する接着性が不十分になり、一
方、１６重量％以上含有させても、それに対応した効果
は得られ難く、逆に接着強度が低下する場合がある。
【０００９】（作用）本発明の接着剤組成物は、エチレ
ン−酢酸ビニル共重合体エマルジョンの樹脂分１００重
量部に対してジカルボン酸ジエステルが３重量部以上含
有されているので、塩化ビニル樹脂シートに適用した際
に被着体への濡れ性が高くなり、接着性が向上する。従
って、特に塩化ビニル樹脂化粧合板（塩化ビニル樹脂シ
ート、フィルム被覆合板）の製造に好適に採用される。
【００１０】
【実施例】以下、本発明に係る実施例とこの比較対象と
なる比較例を挙げて、本発明を説明する。
（実施例１）エチレン−酢酸ビニル共重合体エマルジョ
ン( 住友化学工業（株）製ＳＦ−４６７、エチレン含有
量２０重量％、乳化分散剤ポリビニルアルコール）の樹
脂分１００重量部に対して、ジカルボン酸ジエステル
（デュポン社製ＤＢＥ、コハク酸ジメチル、グルタル酸
ジメチル及びアジピン酸ジメチルの混合物）を７重量部
添加混合し、粘度１８，０００ｍＰａ・ｓ、固形分６０
重量％のエマルジョン型接着剤を得た。
【００１１】（実施例２）ジカルボン酸ジエステルの添
加量を３重量部としたこと以外は、実施例１と全く同様
にしてエマルジョン型接着剤を得た。
（実施例３）ジカルボン酸ジエステルの添加量を１５重
量部としたこと以外は、実施例１と全く同様にしてエマ
ルジョン型接着剤を得た。
【００１２】（比較例１）実施例１でジカルボン酸ジエ
ステルを用いず、その代りにトルエンを７重量部添加し
たこと以外は、実施例１と全く同様にしてエマルジョン
型接着剤を得た。
【００１３】（比較例２）ジカルボン酸ジエステルを全
く使用しなかったこと以外は、実施例１と同様にしてエ
マルジョン型接着剤を得た。
（比較例３）ジカルボン酸ジエステルの添加量を２重量
部としたこと以外は、実施例１と全く同様にしてエマル
ジョン型接着剤を得た。
【００１４】（比較例４）酢酸ビニル樹脂系エマルジョ
ン（ポリ酢酸ビニルを主成分とするエマルジョン、積水
化学工業（株）製エスダイン５２００、粘度１８，００
０ｍＰａ・ｓ、固形分５０重量％）の樹脂分１００重量
部に対して、実施例１で用いたジカルボン酸ジエステル
を７重量部添加混合し、粘度２０，０００ｍＰａ・ｓ、
固形分５０重量％のエマルジョン型接着剤を得た。
【００１５】〔性能評価（常態接着力）〕厚み０．２ｍ
ｍの軟質塩化ビニル樹脂シート(1) を試験片として、実
施例比較例で得た接着剤(2) を用いて被着体（材質：合
板）(3) に接着した後、図１に示すように矢印方向に力
を加えて１８０°剥離ピーリング試験を行った。その結
果を表１に示した。
【００１６】（測定条件)
塗布量 …１２０ｇ／ｍ2
圧締圧 …５００ｇ／ｃｍ2
養生 …２３℃×５０％ＲＨ、７２時間
測定機器…インストロン１１９５
引張速度…２００ｍｍ／分
【００１７】
【表１】
【００１８】
【発明の効果】本発明の接着剤組成物は、エチレン−酢
酸ビニル共重合体エマルジョンの樹脂分１００重量部に
対してジカルボン酸ジエステルが３重量部以上含有され
ており、トルエンのようなＰＲＴＲ法( 化学物質管理促
進法) の適用対象となる溶剤を必要としないので同法の
規制対象には該当しないが、塩化ビニル樹脂シートに適
用した際に被着体への濡れ性を高くして、塩化ビニル樹
脂シートと合板その他の被着体等との良好な接着性を奏
するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive composition suitably used for bonding a vinyl chloride resin sheet such as a vinyl chloride resin decorative plywood. [0002] Vinyl acetate resin emulsions are used for a wide variety of applications such as adhesives (paper and wood), paints and coatings. However, with a normal vinyl acetate resin emulsion, it was difficult to adhere a vinyl chloride resin sheet to the plywood to obtain the vinyl chloride resin decorative plywood. Therefore, a method of adding toluene to an ethylene-vinyl acetate copolymer emulsion has been attempted. According to this method, the adhesiveness to the adherend is improved, but the generation of solvent odor due to toluene is inevitable, which is not preferable in terms of the working environment. Further, an ethylene-vinyl acetate copolymer emulsion containing toluene also falls under the regulation subject to the PRTR method (Chemical Substance Management Promotion Act). The present invention has been made in view of the above-mentioned problems of the conventional ethylene-vinyl acetate copolymer adhesive for vinyl chloride resin sheets, and does not contain toluene. Accordingly, it is an object of the present invention to provide an adhesive composition having good adhesion between a vinyl chloride resin sheet and a plywood, which does not fall under the regulation subject to the PRTR law. SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an ethylene-vinyl acetate copolymer emulsion having a resin content of 10%.
Provided is an adhesive composition containing 3 parts by weight or more of dicarboxylic acid diester per 0 parts by weight. [0005] The ethylene-vinyl acetate copolymer emulsion used in the present invention comprises, for example, a protective colloid of polyvinyl alcohol or the like, a cellulose derivative such as hydroxyethyl cellulose, a surfactant or the like as an emulsifying and dispersing agent. And a vinyl acetate monomer are copolymerized by an emulsion polymerization method. The ethylene-vinyl acetate copolymer, for example, a carboxyl group, an epoxy group, a sulfonic acid group, a hydroxyl group, a methylol group, a vinyl monomer having a functional group such as an alkoxy acid group, to the extent that the object of the present invention is not hindered, Further, it may be copolymerized. The ethylene content of the ethylene-vinyl acetate copolymer is preferably 15 to 40% by weight. If the amount is less than 15% by weight, the adhesiveness may decrease. If the amount exceeds 40% by weight, it may be difficult to obtain a stable product as an industrial product. The dicarboxylic acid diester used in the present invention includes, for example, fatty acid esters.
Specifically, dimethyl succinate, diethyl succinate, dibutyl succinate, etc., lower alcohol esters of succinic acid, dimethyl glutarate, diethyl glutarate, dibutyl glutarate, etc., lower alcohol esters of glutaric acid, dimethyl adipate And lower alcohol esters of adipic acid such as diethyl adipate and dibutyl adipate, and dimethyl succinate, dimethyl glutarate, dimethyl adipate and the like are particularly preferably used. The content of the dicarboxylic acid diester in the adhesive composition of the present invention must be at least 3 parts by weight, preferably 5 to 15 parts by weight, per 100 parts by weight of the resin component of the ethylene-vinyl acetate copolymer emulsion. Department. When the content of the dicarboxylic acid diester is less than 3 parts by weight, the adhesiveness to the vinyl chloride resin sheet becomes insufficient. On the other hand, even when the content is 16% by weight or more, the effect corresponding thereto is hardly obtained, and conversely, the adhesive strength May decrease. (Effect) Since the adhesive composition of the present invention contains 3 parts by weight or more of dicarboxylic acid diester with respect to 100 parts by weight of the resin component of the ethylene-vinyl acetate copolymer emulsion, the vinyl chloride resin sheet When applied to, the wettability to the adherend is increased, and the adhesion is improved. Therefore, it is particularly suitably used for the production of vinyl chloride resin decorative plywood (vinyl chloride resin sheet, film-coated plywood). Hereinafter, the present invention will be described with reference to examples according to the present invention and comparative examples to be compared with the examples. Example 1 Dicarboxylic acid was added to 100 parts by weight of an ethylene-vinyl acetate copolymer emulsion (SF-467 manufactured by Sumitomo Chemical Co., Ltd., ethylene content: 20% by weight, emulsifying dispersant polyvinyl alcohol) based on 100 parts by weight. 7 parts by weight of a diester (a mixture of DuPont's DBE, dimethyl succinate, dimethyl glutarate and dimethyl adipate) was added and mixed to obtain a mixture having a viscosity of 18,000 mPa · s and a solid content of 60.
% By weight of an emulsion type adhesive was obtained. Example 2 An emulsion adhesive was obtained in exactly the same manner as in Example 1 except that the amount of the dicarboxylic acid diester was changed to 3 parts by weight. Example 3 An emulsion-type adhesive was obtained in exactly the same manner as in Example 1 except that the amount of the dicarboxylic acid diester was changed to 15 parts by weight. Comparative Example 1 An emulsion-type adhesive was obtained in exactly the same manner as in Example 1, except that dicarboxylic acid diester was not used and instead, 7 parts by weight of toluene was added. Comparative Example 2 An emulsion adhesive was obtained in the same manner as in Example 1 except that no dicarboxylic acid diester was used. Comparative Example 3 An emulsion-type adhesive was obtained in exactly the same manner as in Example 1 except that the amount of the dicarboxylic acid diester was changed to 2 parts by weight. (Comparative Example 4) A vinyl acetate resin emulsion (an emulsion containing polyvinyl acetate as a main component, Esdine 5200 manufactured by Sekisui Chemical Co., Ltd., viscosity: 18,000)
(0 mPa · s, solid content 50% by weight), 100 parts by weight of the resin component, 7 parts by weight of the dicarboxylic acid diester used in Example 1 was added and mixed, and the viscosity was 20,000 mPa · s.
An emulsion adhesive having a solid content of 50% by weight was obtained. [Performance evaluation (normal adhesive strength)] 0.2 m thick
1 m of a soft vinyl chloride resin sheet (1) as a test piece was bonded to an adherend (material: plywood) (3) using the adhesive (2) obtained in the comparative example of the present invention. As described above, a 180 ° peeling test was performed by applying a force in the direction of the arrow. The results are shown in Table 1. (Measurement conditions) Application amount: 120 g / m 2 Clamping pressure: 500 g / cm 2 Curing: 23 ° C. × 50% RH, 72 hours Measuring equipment: Instron 1195 Peeling speed: 200 mm / min 1) The adhesive composition of the present invention contains at least 3 parts by weight of dicarboxylic diester with respect to 100 parts by weight of the resin component of the ethylene-vinyl acetate copolymer emulsion, and has the same effect as toluene. Since it does not require solvents that are subject to the PRTR Law (Chemical Substances Management Promotion Act), it does not fall under the regulation of the law, but it has high wettability to adherends when applied to vinyl chloride resin sheets. As a result, good adhesion between the vinyl chloride resin sheet and the plywood and other adherends can be achieved.
【図面の簡単な説明】
【図１】本発明における接着性能の試験方法を示す模式
図である。
【符号の説明】
１・・・試験片
２・・・接着剤
３・・・被着体BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a method for testing adhesion performance in the present invention. [Description of Signs] 1 ... Test piece 2 ... Adhesive 3 ... Adherend
Claims (1)
ンの樹脂分１００重量部に対してジカルボン酸ジエステ
ルが３重量部以上含有されていることを特徴とする接着
剤組成物。Claims: 1. An adhesive composition comprising a dicarboxylic acid diester in an amount of 3 parts by weight or more based on 100 parts by weight of a resin component of an ethylene-vinyl acetate copolymer emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002089236A JP2003277706A (en) | 2002-03-27 | 2002-03-27 | Adhesive composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002089236A JP2003277706A (en) | 2002-03-27 | 2002-03-27 | Adhesive composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003277706A true JP2003277706A (en) | 2003-10-02 |
Family
ID=29234868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002089236A Withdrawn JP2003277706A (en) | 2002-03-27 | 2002-03-27 | Adhesive composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003277706A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002121518A (en) * | 2000-10-12 | 2002-04-26 | Denki Kagaku Kogyo Kk | Adhesive composition |
| JP2005178637A (en) * | 2003-12-19 | 2005-07-07 | Toyo Ink Mfg Co Ltd | Interior material for automobile |
-
2002
- 2002-03-27 JP JP2002089236A patent/JP2003277706A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002121518A (en) * | 2000-10-12 | 2002-04-26 | Denki Kagaku Kogyo Kk | Adhesive composition |
| JP2005178637A (en) * | 2003-12-19 | 2005-07-07 | Toyo Ink Mfg Co Ltd | Interior material for automobile |
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