JP6665501B2 - Chloroprene rubber adhesive composition - Google Patents
Chloroprene rubber adhesive composition Download PDFInfo
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- JP6665501B2 JP6665501B2 JP2015233654A JP2015233654A JP6665501B2 JP 6665501 B2 JP6665501 B2 JP 6665501B2 JP 2015233654 A JP2015233654 A JP 2015233654A JP 2015233654 A JP2015233654 A JP 2015233654A JP 6665501 B2 JP6665501 B2 JP 6665501B2
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- chloroprene rubber
- adhesive composition
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- butyl acetate
- based adhesive
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Description
本発明は、クロロプレンゴム系接着剤組成物に関するものであり、より詳しくはトルエンを用いなくても接着強度と安定性が良好なクロロプレンゴム系接着剤組成物に関するものである。 The present invention relates to a chloroprene rubber-based adhesive composition, and more particularly, to a chloroprene rubber-based adhesive composition having good adhesive strength and stability without using toluene.
クロロプレンゴム等をベースとした溶剤系接着剤は、その良好な作業性や接着物性から各種用途に用いられてきた。そのため、数多くのクロロプレン系接着剤が開発されている。これらのクロロプレンゴム系接着剤は、原料ゴムおよびその他の配合剤をトルエン、シクロヘキサン、アセトンなどの有機溶剤に溶解させているものがほとんどである(例えば、特許文献1〜3参照。)。 Solvent-based adhesives based on chloroprene rubber and the like have been used in various applications because of their good workability and adhesive properties. Therefore, many chloroprene adhesives have been developed. Most of these chloroprene rubber-based adhesives dissolve raw rubber and other compounding agents in an organic solvent such as toluene, cyclohexane, and acetone (for example, see Patent Documents 1 to 3).
一方で、シックハウス症候群への対応として、ホルマリンや、トルエン、キシレンの使用ができなくなり、トルエン不含のクロロプレンゴム系接着剤が市場では要望されている。 On the other hand, in order to cope with sick house syndrome, formalin, toluene and xylene cannot be used, and a chloroprene rubber-based adhesive containing no toluene is demanded in the market.
トルエン不含のクロロプレンゴム系接着剤としては、例えば特許文献4、5など、代替溶剤をもちいるものが挙げられるが、クロロプレンゴムを単独では溶解しない溶剤が多く、トルエンを用いているものよりも接着剤物性や安定性が劣るという問題があった。 Examples of the toluene-free chloroprene rubber-based adhesive include those using alternative solvents, such as Patent Documents 4 and 5, but many solvents do not dissolve chloroprene rubber alone, and are more soluble than those using toluene. There was a problem that the adhesive properties and stability were poor.
本発明はこの問題点に鑑みてなされたものであり、接着物性および安定性に優れたクロロプレンゴム系接着剤組成物を提供するものである The present invention has been made in view of this problem, and provides a chloroprene rubber-based adhesive composition having excellent adhesive properties and stability.
本発明者は、このような背景の下、上記課題を解決するため鋭意検討した結果、ブチルアセテートを含むことで、トルエンを用いなくてもクロロプレン系接着剤の接着物性および安定性を向上することを知見し、本発明を完成させるに至った。 Under these circumstances, the present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, by including butyl acetate, it is possible to improve the adhesive properties and stability of a chloroprene-based adhesive without using toluene. And found that the present invention was completed.
すなわち本発明は、クロロプレンゴム及び溶剤を含むクロロプレンゴム系接着剤組成物であって、溶剤がブチルアセテートであり、溶剤として、トルエン、ヘキサン、シクロヘキサンおよびメチルシクロヘキサンを含まず、ブチルアセテート含有量が溶剤全体の50重量%以上であることを特徴とするクロロプレンゴム系接着剤組成物である。 That is, the present invention is a chloroprene rubber-based adhesive composition containing chloroprene rubber and a solvent, wherein the solvent is butyl acetate, and the solvent does not include toluene, hexane, cyclohexane, and methylcyclohexane, and the butyl acetate content is a solvent. It is a chloroprene rubber-based adhesive composition characterized by being 50 % by weight or more of the whole.
本発明のクロロプレンゴム系接着剤は、上記の通りすることにより、トルエンを用いなくても、接着物性と安定性に優れる接着剤を提供することができる。 By performing the chloroprene rubber-based adhesive of the present invention as described above, an adhesive having excellent adhesive properties and stability can be provided without using toluene.
以下、本発明について、詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明のクロロプレンゴムは、2−クロロ−1,3−ブタジエンであるクロロプレンの単量体を単独で重合して得られたもの、または、クロロプレンと共重合可能な1種類以上の単量体を用いて重合して得られたものであるである。 The chloroprene rubber of the present invention is obtained by polymerizing a monomer of chloroprene which is 2-chloro-1,3-butadiene alone, or one or more monomers copolymerizable with chloroprene. And obtained by polymerization.
クロロプレンと共重合可能な単量体としては、例えば、2,3−ジクロロ−1,3−ブタジエン、アクリロニトリル、メチルメタクリレート、ヒドロキシエチルメタクリレート、メタクリル酸等があげられる。 Examples of monomers copolymerizable with chloroprene include 2,3-dichloro-1,3-butadiene, acrylonitrile, methyl methacrylate, hydroxyethyl methacrylate, and methacrylic acid.
溶剤としては、ブチルアセテート単独でも良いが、ブチルアセテート以外にもブチルアセテート以外のエステル系溶剤を使用する事が可能である。ブチルアセテート以外のエステル系溶剤としては、アセトン、エチルアセテート、MEK(メチルエチルケトン)等が挙げられる。溶剤としては、クロロプレンゴム系接着剤組成物の低温安定性に優れるため、シクロヘキサンを含まない方が好ましい。また、クロロプレンゴム系接着剤組成物の接着強さが低下しないため、ヘキサンまたはメチルシクロヘキサンを含まない方が好ましい。 The solvent may be a butyl acetate alone, it is possible to also use the ester solvent agent other than butyl acetate in addition to butyl acetate. Examples of ester solvents other than butyl acetate include acetone, ethyl acetate, MEK (methyl ethyl ketone), and the like . As the solvent, it is preferable not to contain cyclohexane because the chloroprene rubber-based adhesive composition has excellent low-temperature stability. Further, it is preferable that hexane or methylcyclohexane is not contained because the adhesive strength of the chloroprene rubber-based adhesive composition does not decrease.
ブチルアセテート含有量は溶剤全体の50重量%以上であることが必要であるが、50重量%〜80重量%がより好ましい。ブチルアセテート含有量が50重量%未満であると、クロロプレンゴム系接着剤組成物の接着性が劣る。 Butyl acetate content is required to be at least 50 wt% of the total solvent, more preferably 5 0 wt% to 80 wt%. If the butyl acetate content is less than 50% by weight, the adhesiveness of the chloroprene rubber-based adhesive composition will be poor.
本発明のクロロプレンゴム系接着剤組成物は、その他に、一般的に用いられる金属酸化物や粘着付与樹脂、老化防止剤等を含ませることができる。金属酸化物としては酸化マグネシウムや酸化亜鉛が一般的には多く用いられ、粘着付与樹脂としては、アルキルフェノール樹脂や、テルペンフェノール樹脂などが用いられることが多い。 The chloroprene rubber-based adhesive composition of the present invention may further contain commonly used metal oxides, tackifier resins, antioxidants, and the like. Magnesium oxide and zinc oxide are generally and often used as metal oxides, and alkyl phenol resins and terpene phenol resins are often used as tackifier resins.
本発明のクロロプレンゴム系接着剤組成物は、例えば、クロロプレンゴムを金属酸化物や粘着付与樹脂、老化防止剤などと共に、上記溶剤に混合し、撹拌して溶解させることで作成できる。 The chloroprene rubber-based adhesive composition of the present invention can be prepared by, for example, mixing chloroprene rubber with a metal oxide, a tackifier resin, an antioxidant, and the like in the above-described solvent, and stirring and dissolving the mixture.
以下、本発明を実施例にて具体的に説明する。
クロロプレンゴム系接着剤組成物は下記に示す手法で作製・評価を行った。
Hereinafter, the present invention will be described specifically with reference to Examples.
The chloroprene rubber-based adhesive composition was prepared and evaluated by the following method.
<接着剤の作製>
接着剤は、表1に記載の配合剤および溶剤を所定量瓶に投入し、密栓したうえでボールミル架台にて室温下にて48時間回転・混合させることで作製した。
<Preparation of adhesive>
The adhesive was prepared by charging a predetermined amount of the compounding agent and the solvent shown in Table 1 into a bottle, sealing the container, and rotating and mixing the mixture at room temperature for 48 hours using a ball mill stand.
<低温安定性>
作製した接着剤を、−10℃にて2週間保管し、状態を観察した。
<Low temperature stability>
The prepared adhesive was stored at −10 ° C. for 2 weeks, and the state was observed.
○:変化なし ×:高粘度化・固化
<接着試験片作製>
9号帆布2枚(約150mm×60mm)それぞれの片面に、作製した接着剤を刷毛で約230g/m2塗布し、80℃にて5分間乾燥した。室温で30分放冷した後、再度接着剤を刷毛にて約90g/m2塗布し、80℃にて5分乾燥直後、もしくは、その後60分放冷した後にハンドローラーを用いて圧着した。150mm×25mmのサイズに切り出したものを測定用の試験片とした。
○: No change ×: Higher viscosity / solidification <Adhesion test piece preparation>
The prepared adhesive was applied to one surface of each of two No. 9 canvases (approximately 150 mm × 60 mm) with a brush by about 230 g / m 2 and dried at 80 ° C. for 5 minutes. After allowing to cool at room temperature for 30 minutes, the adhesive was applied again with a brush at about 90 g / m 2 and immediately after drying at 80 ° C. for 5 minutes, or after allowing to cool for 60 minutes, and then pressed using a hand roller. A piece cut out to a size of 150 mm × 25 mm was used as a test piece for measurement.
<接着強さ>
圧着2分後にテンシロン型引っ張り試験機を用いて100mm/minの剥離速度で180°方向の引っ張りにて行った。
<Adhesive strength>
Two minutes after the pressure bonding, a tensile test in a 180 ° direction was performed at a peeling speed of 100 mm / min using a Tensilon type tensile tester.
<高温接着強さ>
接着3日後に、試験片を80℃雰囲気下にて5分間状態調整を実施し、テンシロン型引っ張り試験機を用いて80℃の雰囲気下にて100mm/minの剥離速度で180°方向の引っ張りにて行った。
<High temperature adhesive strength>
Three days after bonding, the test specimen was conditioned in an atmosphere of 80 ° C. for 5 minutes, and pulled in a 180 ° direction at a peeling rate of 100 mm / min in an atmosphere of 80 ° C. using a Tensilon type tensile tester. I went.
実施例1〜3、比較例1〜7
実施例および比較例を表1に示す。
Examples 1 to 3 and Comparative Examples 1 to 7
Table 1 shows examples and comparative examples.
実施例では良好な安定性と接着強さが得られたことが分かる。 It can be seen from the examples that good stability and adhesive strength were obtained.
本発明のクロロプレンゴム系接着剤組成物は、家具、木工、建材など、広範囲の材料の接着分野で使用される。 The chloroprene rubber-based adhesive composition of the present invention is used in the field of bonding a wide range of materials such as furniture, woodwork, and building materials.
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JP2015233654A JP6665501B2 (en) | 2015-11-30 | 2015-11-30 | Chloroprene rubber adhesive composition |
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JP6665501B2 true JP6665501B2 (en) | 2020-03-13 |
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Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2005350627A (en) * | 2004-06-14 | 2005-12-22 | Cemedine Co Ltd | Chloroprene-based adhesive composition |
CN1952031A (en) * | 2005-10-21 | 2007-04-25 | 中国石化集团巴陵石油化工有限责任公司 | Mixed solvent for preparing neoprene adhesive |
JP2007291188A (en) * | 2006-04-21 | 2007-11-08 | Aica Kogyo Co Ltd | High solid content solvent-based rubber adhesive |
BRPI0703285B1 (en) * | 2007-07-26 | 2017-06-20 | Oxiteno S/A Indústria e Comércio | Balanced solutions of non-toluene solvents for polychloroprene resin based contact adhesives comprising a plurality of miscible solvents |
JP5805965B2 (en) * | 2011-03-14 | 2015-11-10 | 電気化学工業株式会社 | Chloroprene rubber and adhesive using the same |
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