JP4415417B2 - Deodorant adhesive composition - Google Patents

Deodorant adhesive composition Download PDF

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Publication number
JP4415417B2
JP4415417B2 JP09438099A JP9438099A JP4415417B2 JP 4415417 B2 JP4415417 B2 JP 4415417B2 JP 09438099 A JP09438099 A JP 09438099A JP 9438099 A JP9438099 A JP 9438099A JP 4415417 B2 JP4415417 B2 JP 4415417B2
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Prior art keywords
adhesive
adhesive composition
present
silicon dioxide
aldehyde gas
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JP2000281998A (en
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修 高木
敏郎 蛭川
芳範 山田
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Toagosei Co Ltd
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Toagosei Co Ltd
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  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Treating Waste Gases (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Description

【0001】
【発明の属する技術分野】
本発明の接着剤組成物は特にアルデヒドガス吸収性に優れ、建材や医療現場、衣料品等の接着剤の使用される広い分野で有害なアルデヒドガスを吸収し、人間に快適な環境や物資、アルデヒドガスのない産業現場等を実現するものである。
【0002】
【従来の技術】
近年、住宅の高気密化に伴い、普通合板、木質材料、化粧合板、フローリング、床材、壁・天井材などから放出されるホルムアルデヒドが住宅内部で高濃度にこもり、住人にシックハウス/シックビル症候群を引き起こすことが明らかとなって社会問題化している。
また、一方では、生活レベルの向上に伴って消費者の悪臭に対する関心が高まり、煙草臭等の消臭に対するニーズが急速に高まっており、各種の消臭剤が提案されてきている。
【0003】
この煙草臭の臭気成分はほとんどがアセトアルデヒドであることが知られており、人間のアセトアルデヒド臭に対する検知閾値(かろうじて感じることのできる濃度)は0.01ppmであると言われている。また、シックハウス/ビル症候群に関連するWHOや厚生省の推奨するホルムアルデヒドの上限濃度も0.08ppmといずれも非常に低い濃度である。この様な低濃度での消臭は従来の消臭剤である活性炭などでは到底実現できなかった。
【0004】
この問題に対して、例えば、活性炭にアンモニウム塩やアニリン等を担持させたり(特開昭53−29292、特開昭56−53744)、ケイ酸マグネシウム質粘土鉱物に分子内に第1級アミノ基を有する化合物を担持させたり(特開平9−28778)、層状燐酸塩(α燐酸ジルコニウム)の層間にポリアミン化合物を担持させたガス吸収剤が知られている(津波古ら PHARM.TECH.JAPAN Vol.12.No.12 P.P.77-87(1996))が、いずれも、単体でのアルデヒドガス吸着性能が十分でなかったため、接着剤組成物として使用した場合にもその性能は不十分であり、実用化されることはなかった。
【0005】
【本発明が解決しようとする課題】
本発明は、特にアルデヒドガス吸収性能に優れた接着剤組成物を提供しようとするものである。
【0006】
【課題を解決するための手段】
本発明者らは、鋭意検討した結果、特定の二酸化ケイ素に特定のポリアミン化合物を担持させたアルデヒドガス吸収剤を接着剤組成物に含有させた場合、接着剤の硬化に伴う高熱や電磁波照射、あるいは化学的な副生物等にも影響を受けず、きわめて低濃度のアルデヒドガスまでも完全に除去することができることを見いだし、本発明を完成するに至った。
【0007】
【発明の実施の形態】
以下本発明を詳細に説明する。
○二酸化ケイ素
本発明における二酸化ケイ素は、アミン化合物と複合化出来るものであれば良いが、好ましくは比表面積が50〜900m2/gの二酸化ケイ素が良い。比表面積が小さ過ぎると、アミン化合物とアルデヒドガスとの接触面積が減少し、ガス吸着量が損なわれる。また、比表面積が大きすぎるものは、アミン化合物が多く吸着されすぎて、樹脂等に添加して混練した際、加熱により変色を生じさせる原因となり易い。比表面積は、窒素吸着量から算出するBET法により、容易に測定できる。またそれら二酸化ケイ素のなかでも、好ましくは平均細孔径が0.1〜10nmである多孔質二酸化ケイ素がより消臭性能に優れる。特に好ましい二酸化ケイ素としては、比表面積が500〜900m2/gであり且つ平均細孔径が2〜8nmである。
【0008】
平均細孔径が大きすぎると、比表面積が減り、アミン化合物の担持量が少なくなり、アルデヒド類のガス吸着性能が低下する。平均細孔径が大きすぎるにも係らず比表面積を充分な大きさにしようとすると、多孔質体における空隙率が大きくなりすぎ、機械的強度が小さくなったり、アミン化合物を担持する能力が弱くなり、僅かな加熱によりアミン化合物を放出してしまうという問題がある。一方、平均細孔径が小さすぎると、二酸化ケイ素の比表面積は増加するが、アミン化合物が細孔内に入り難くなり、結果としてアミン化合物の担持量を増加できなくなり、ガス吸収能は減少する。平均細孔径(D)は、BET法により求めた細孔容積及び比表面積から下記式を用いて容易に算出される。
【0009】
【数1】
D=4×V/Sc×104
(V:細孔容積[mL/g]、Sc:比表面積[m2/g])
【0010】
本発明における二酸化ケイ素の好ましい含水率は0.5〜20重量%であり、より好ましくは、1〜15重量%である。
含水率が0.5重量%未満の場合、表面のシラノール基が少ないため、本発明におけるポリアミン化合物に対する担持力が小さい。逆に、含水率が20重量%より多いと、接着剤に添加した際、着色、発泡や劣化の原因となる。
二酸化ケイ素の含水率は、JIS K7120〜7122に準じて容易に測定できる。
【0011】
○アミン化合物
本発明におけるアミン化合物は、分子内にアミノ基を有しており、好ましくは沸点が100℃以上である。100℃以下の場合、熱硬化性接着剤に添加した用途などで十分な効果を発揮しない場合がある。また、二酸化ケイ素と複合化する工程などで蒸発する可能性がある。また、特に好ましくはアミノ基が複数個ついた次に示すポリアミン化合物が良い。
【0012】
○ポリアミン化合物
本発明におけるポリアミン化合物は、分子内に第1級アミノ基を有しており、下記式で表わされる。
【0013】
【化2】

Figure 0004415417
【0014】
上記のポリアミン化合物は、室温で液体であり、分解温度及び沸点が高く、アルデヒドガスとの反応性が高い第1級アミノ基を有する。
ポリアミン化合物の担持量は、前記二酸化ケイ素1g当たり0.02〜2.0mmolである。担持量が少な過ぎると、アルデヒドガスの吸収能が低下し、担持量が多過ぎると、接着剤に添加する際、変色の原因になる上、ポリアミン化合物自身が悪臭となる。また、アルデヒド吸収量も減少する。ポリアミン化合物の担持量は、有機元素分析により検出される窒素含有率から容易に算出できる。
【0015】
本発明におけるアルデヒドガス吸収剤は、いずれも通常粉体状で得られ、好ましい平均粒径は0.01〜800μmであり、より好ましくは0.1〜50μmである。平均粒径が0.01μm未満では取扱いが困難である、再凝集しやすいといった問題があり好ましくない。また、800μmより大きいと、保存時に沈降しやすい、接着剤表面の平滑性が損なわれるといった問題があり好ましくない。
【0016】
本発明におけるガス吸収剤は、アルデヒドガスに対して有効である。アルデヒドガスとしては、アセトアルデヒド、ホルムアルデヒドなどがある。また、対象とするガスによって、その他の消臭剤と混合したり、併用することも可能である。
本発明で用いるガス吸収剤は、熱及び光の暴露に対して安定であり、200℃以上での加熱後であっても構造及び組成が殆ど変化せず、紫外線の照射によっても何等変色を起こさない。又、液体状態にある水と接触させても骨格構造の変化がみられない。従って、本発明の組成物は、その製造工程や保存、さらには使用時において、加熱温度或いは遮光等の制約をうけることがない。
【0017】
○アルデヒドガス吸収剤の調製方法
本発明におけるアルデヒドガス吸収剤は、上記の二酸化ケイ素とアミン化合物を混合すれば、容易に得られる。特にジエチレントリアミンやトリエチレンテトラミン、テトラエチレンペンタミンなどは液状の為、そのまま二酸化ケイ素と混合することによって洗浄すること無く、複合体が得られる。他のアミン化合物の場合、水等に溶解させて二酸化ケイ素と混合することにより、均一にアミン化合物を担持できる。二酸化ケイ素に担持されなかった過剰のアミン化合物は、水等で洗浄することができる。得られた複合体は例えば50℃〜120℃で乾燥し、粉砕することにより、本発明におけるアルデヒドガス吸収剤を得ることができる。
【0018】
○接着剤成分
接着剤の種類としては、ユリア樹脂系接着剤、メラミン樹脂系接着剤、フェノール樹脂系接着剤、クロロプレンゴム系溶剤形接着剤、合成ゴム系ラテックス形接着剤、酢酸ビニル樹脂系エマルション形接着剤、アクリル樹脂系エマルション形接着剤、澱粉系接着剤などがあるが、本発明における接着剤種類に特に制限はなく、上記のいずれであってもよい。
好ましい接着剤は、ホルムアルデヒド含有量の少ない接着剤であり、この様な接着剤は、接着剤以外から放散されるホルムアルデヒドをも吸着する作用を有している。
具体的に好ましい接着剤としては、澱粉系接着剤などが挙げられ、一般に壁紙の接着などに使用される。壁紙の接着剤に用いた場合、例えば、壁紙の裏側にある建材から放散されるホルムアルデヒドや、住居などの空間に充満しているホルムアルデヒドを吸収することが出来、快適な環境を作ることが出来る。
また、空間中の煙草臭なども低濃度まで消臭できる。
【0019】
本発明の接着剤組成物は液状、粘性液状であり、溶液型、分散型のいずれでもよく、エマルションも特に制限はなく、親油性、親水性エマルション及び水のいずれでもよい。
又、本発明の接着剤組成物はいかなる機構により硬化するタイプでもよい。
【0020】
○接着剤組成物の調製方法
本発明の接着剤組成物は、上記ガス吸収剤と接着剤成分を、例えばボールミル、ロールミル、ディスパーやミキサー等の一般的な混合装置を用いて、常法により充分に分散、混合すれば、容易に得られる。
【0021】
本発明の接着剤組成物におけるガス吸収剤の好ましい配合割合は、接着剤を形成する成分やその接着剤の使用目的、使用環境、接着対象等により適宜調整すれば良く、例えば接着剤自身の特性を損なわずに接着剤にアルデヒドガス吸収効果を付与させるには、接着剤固形分に対し、0.1〜10重量%(以下単に%と略す)の割合が好ましい。本発明の接着剤組成物における樹脂分をガス吸収剤の結合剤として使用し、接着する対象にガス吸収剤を多量に付着させてアルデヒドガス吸収性を発揮させたい場合、塗料固形分に対し10〜60%の割合が好ましい。但し、アルデヒドガス吸収効果の長期持続性又は速硬性等のより強力な効果を得たい場合は適宜配合割合を増やすこともできる。
【0022】
○接着及び硬化方法
本発明の接着剤組成物を塗布する方法には特に制限はなく、刷毛塗り、スプレー塗布、浸漬塗布等、接着膜形成要素、接着剤の性状等に応じて公知の方法に従って塗布すればよい。本発明の接着剤組成物を塗布する際、表面の一部を塗布するに止まらず、物品の全面を被覆することもできる。
又、本発明の接着剤組成物を硬化する方法も特に制限はなく、常温乾燥、加熱、紫外線、可視光又は電子線等の光線を照射する方法等のいずれでもよく、接着剤の硬化機構に応じて公知の方法に従って適宜硬化手段を採用することができる。
【0023】
○適用対象
本発明の接着剤組成物は、アルデヒドガスの吸収性を必要とする種々の分野で利用することができ、塗布する対象物は限定されない。具体的な用途の例としては、病院、学校、一般住宅、食品工場、自動車、飛行機、鉄道車両等の交通機関、浴室、トイレ、または台所の壁、天井、床の壁紙、フローリングなどの住宅設備、冷蔵庫や電子レンジなど電気製品などの表面、合板などの集成木材がある。これらの空隙に本発明の接着剤組成物を充填して形成した接着成分により、煙草臭の原因となっているアセトアルデヒド臭や、壁紙等から発生するホルムアルデヒド臭等の悪臭を吸収することができる。
【0024】
【実施例】
以下、本発明を更に具体的に説明する。
○アルデヒドガス吸収剤の調製方法
本発明におけるアルデヒドガス吸収剤を、以下の方法で得た。
二酸化ケイ素の粉体1gを所定量のアミン化合物に添加し、さらに純水を10g加えて十分攪拌する。40℃で2時間振とうする。その後、スラリーをブフナーロートで濾過し、純水で濾液の電気伝導度が20μS/cm以下になるまで洗浄する。洗浄した粉体を100℃で12時間乾燥して、アルデヒドガス吸収剤を得た。
【0025】
(実施例2〜3及び比較例1〜5)こうして得られたアルデヒドガス吸収剤(下記表1:実施例2〜3)、及び従来のアルデヒドガス吸収剤a〜c(下記表1:比較例1〜3)、活性炭(比較例4)を、澱粉系接着剤100重量部(以下単に部と略す)当たり5部添加することにより消臭性接着剤組成物を得た。また、比較としてアルデヒドガス吸収剤を添加しないものも調製した(比較例5)。このようにして得た接着剤組成物を、5cm×10cmの壁紙に塗布後、同じ寸法で厚さ8mmのMDF(中密度集成材)に貼り付け、一晩自然乾燥させ、試料とした。MDFは、JIS(日本工業規格)で規定されるE1区分のものを用いた。E1区分とは、JISのA-5908号で規定される試験法によりホルムアルデヒドを平均で5mg/L以下の濃度で放散する合板である。
【0026】
【表1】
Figure 0004415417
【0027】
(ホルムアルデヒドガス吸収試験)
実施例及び比較例で得た試料をテドラーバッグ(5リットル)に入れ密封し、24時間後に、テドラーバッグ中のホルムアルデヒドガス濃度をホルムアルデヒドガス濃度検出器ホルムテクター(新コスモス電機株式会社製型式XP-308)及び検知管(ガステック株式会社製)を用いて測定した。
上記のようにして得られた試験結果を下記表2に示した。
【0028】
【表2】
Figure 0004415417
【0029】
【発明の効果】
本発明の接着剤組成物によって形成された硬化物は、アルデヒドガスに対して優れた吸収能を有し、多分野において賞用されるものである。[0001]
BACKGROUND OF THE INVENTION
The adhesive composition of the present invention is particularly excellent in aldehyde gas absorption, absorbs harmful aldehyde gas in a wide range of areas where adhesives are used, such as building materials, medical sites, and clothing, and provides a comfortable environment and materials for humans. It realizes industrial sites without aldehyde gas.
[0002]
[Prior art]
In recent years, with high airtightness of houses, formaldehyde released from ordinary plywood, woody material, decorative plywood, flooring, flooring, wall and ceiling materials, etc. has become highly concentrated inside the house, resulting in sick house / sick building syndrome for residents. It has become clear that this is causing social problems.
On the other hand, with the improvement of living standards, consumers' interest in bad odors has increased, and the need for deodorization such as cigarette odors has rapidly increased, and various deodorants have been proposed.
[0003]
It is known that most of the odor components of the cigarette odor are acetaldehyde, and it is said that the detection threshold (a barely perceivable concentration) for human acetaldehyde odor is 0.01 ppm. In addition, the upper limit concentration of formaldehyde recommended by WHO and Ministry of Health and Welfare related to sick house / building syndrome is 0.08 ppm, both of which are very low. Such deodorization at a low concentration could not be realized with activated carbon, which is a conventional deodorant.
[0004]
To solve this problem, for example, activated carbon supports ammonium salt, aniline or the like (Japanese Patent Laid-Open No. 53-29292, Japanese Patent Laid-Open No. 56-53744), or a primary amino group in the molecule of a magnesium silicate clay mineral. Gas absorbers are known in which a compound having a hydrogen atom is carried (JP-A-9-28778), or a polyamine compound is carried between layers of a layered phosphate (α-zirconium phosphate) (Tsunako Furu et al. PHARM.TECH.JAPAN Vol. .12.No.12 PP77-87 (1996)) was not sufficient for aldehyde gas adsorption as a single unit, so when used as an adhesive composition, its performance was insufficient and practical. It was never converted.
[0005]
[Problems to be solved by the present invention]
The present invention intends to provide an adhesive composition particularly excellent in aldehyde gas absorption performance.
[0006]
[Means for Solving the Problems]
As a result of intensive studies, the present inventors have included an aldehyde gas absorbent in which a specific polyamine compound is supported on a specific silicon dioxide in an adhesive composition, high heat and electromagnetic wave irradiation accompanying curing of the adhesive, Alternatively, the inventors have found that even an extremely low concentration of aldehyde gas can be completely removed without being affected by chemical by-products, and the present invention has been completed.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail below.
Silicon Dioxide The silicon dioxide in the present invention is not particularly limited as long as it can be combined with an amine compound, but silicon dioxide having a specific surface area of 50 to 900 m 2 / g is preferred. When the specific surface area is too small, the contact area between the amine compound and the aldehyde gas decreases, and the gas adsorption amount is impaired. Moreover, when the specific surface area is too large, too much amine compound is adsorbed, and when added to a resin or the like and kneaded, it tends to cause discoloration by heating. The specific surface area can be easily measured by the BET method calculated from the nitrogen adsorption amount. Of these silicon dioxides, porous silicon dioxide having an average pore diameter of preferably 0.1 to 10 nm is more excellent in deodorizing performance. Particularly preferable silicon dioxide has a specific surface area of 500 to 900 m 2 / g and an average pore diameter of 2 to 8 nm.
[0008]
If the average pore diameter is too large, the specific surface area decreases, the amount of amine compound supported decreases, and the gas adsorption performance of aldehydes decreases. If the specific surface area is made sufficiently large even though the average pore diameter is too large, the porosity in the porous body becomes too large, the mechanical strength becomes small, and the ability to carry amine compounds becomes weak. There is a problem that the amine compound is released by slight heating. On the other hand, if the average pore diameter is too small, the specific surface area of silicon dioxide increases, but it becomes difficult for the amine compound to enter the pores. As a result, the amount of amine compound supported cannot be increased, and the gas absorption capacity decreases. The average pore diameter (D) is easily calculated from the pore volume and specific surface area determined by the BET method using the following formula.
[0009]
[Expression 1]
D = 4 × V / Sc × 10 4
(V: pore volume [mL / g], Sc: specific surface area [m 2 / g])
[0010]
The preferable water content of silicon dioxide in the present invention is 0.5 to 20% by weight, more preferably 1 to 15% by weight.
When the water content is less than 0.5% by weight, since there are few silanol groups on the surface, the supporting force for the polyamine compound in the present invention is small. On the other hand, if the water content is higher than 20% by weight, it may cause coloring, foaming or deterioration when added to the adhesive.
The water content of silicon dioxide can be easily measured according to JIS K7120-7122.
[0011]
-Amine compound The amine compound in this invention has an amino group in a molecule | numerator, Preferably it is a boiling point of 100 degreeC or more. When the temperature is 100 ° C. or lower, there may be a case where sufficient effects are not exhibited in the use added to the thermosetting adhesive. In addition, there is a possibility of evaporation in a process of compounding with silicon dioxide. In particular, the following polyamine compounds having a plurality of amino groups are preferred.
[0012]
-Polyamine compound The polyamine compound in this invention has a primary amino group in a molecule | numerator, and is represented by a following formula.
[0013]
[Chemical formula 2]
Figure 0004415417
[0014]
The polyamine compound is a liquid at room temperature, has a primary amino group having a high decomposition temperature and boiling point, and high reactivity with aldehyde gas.
The amount of the polyamine compound supported is 0.02 to 2.0 mmol per 1 g of the silicon dioxide. If the supported amount is too small, the ability to absorb aldehyde gas is reduced, and if the supported amount is too large, it causes discoloration when added to the adhesive, and the polyamine compound itself has a bad odor. Also, aldehyde absorption is reduced. The amount of polyamine compound supported can be easily calculated from the nitrogen content detected by organic element analysis.
[0015]
All of the aldehyde gas absorbents in the present invention are usually obtained in a powder form, and a preferable average particle diameter is 0.01 to 800 μm, more preferably 0.1 to 50 μm. If the average particle size is less than 0.01 μm, the handling is difficult and reaggregation tends to occur, which is not preferable. Moreover, when larger than 800 micrometers, there exists a problem that it is easy to settle at the time of a preservation | save and the smoothness of the adhesive surface is impaired, and is not preferable.
[0016]
The gas absorbent in the present invention is effective against aldehyde gas. Examples of the aldehyde gas include acetaldehyde and formaldehyde. Further, depending on the target gas, it may be mixed with other deodorants or used in combination.
The gas absorbent used in the present invention is stable against exposure to heat and light, its structure and composition hardly change even after heating at 200 ° C. or higher, and any color change is caused by irradiation with ultraviolet rays. Absent. Moreover, even if it contacts with the water in a liquid state, the change of skeleton structure is not seen. Therefore, the composition of the present invention is not subject to restrictions such as heating temperature or light shielding during the production process, storage, and use.
[0017]
Preparation method of aldehyde gas absorbent The aldehyde gas absorbent in the present invention can be easily obtained by mixing the above silicon dioxide and an amine compound. In particular, since diethylenetriamine, triethylenetetramine, tetraethylenepentamine and the like are in a liquid state, a composite can be obtained without washing by mixing with silicon dioxide as it is. In the case of other amine compounds, the amine compound can be uniformly supported by dissolving in water or the like and mixing with silicon dioxide. Excess amine compound not supported on silicon dioxide can be washed with water or the like. The obtained composite can be dried at 50 ° C. to 120 ° C. and pulverized to obtain the aldehyde gas absorbent in the present invention.
[0018]
○ Adhesive component Adhesive types include urea resin adhesive, melamine resin adhesive, phenol resin adhesive, chloroprene rubber solvent adhesive, synthetic rubber latex adhesive, vinyl acetate resin emulsion There are shape adhesives, acrylic resin emulsion adhesives, starch adhesives, etc., but there is no particular limitation on the type of adhesive in the present invention, and any of the above may be used.
A preferred adhesive is an adhesive having a low formaldehyde content, and such an adhesive has an action of adsorbing formaldehyde emitted from other than the adhesive.
Specific examples of preferable adhesives include starch-based adhesives, which are generally used for wallpaper adhesion and the like. When used as a wallpaper adhesive, for example, it can absorb formaldehyde emitted from the building material on the back side of the wallpaper and formaldehyde filled in a space such as a residence, thereby creating a comfortable environment.
In addition, cigarette odors in the space can be deodorized to a low concentration.
[0019]
The adhesive composition of the present invention is liquid or viscous liquid, and may be either a solution type or a dispersion type, and the emulsion is not particularly limited, and may be any of lipophilic, hydrophilic emulsion and water.
The adhesive composition of the present invention may be of a type that cures by any mechanism.
[0020]
○ Preparation method of adhesive composition The adhesive composition of the present invention is sufficient for the above-mentioned gas absorbent and adhesive components by a conventional method using a general mixing apparatus such as a ball mill, a roll mill, a disper or a mixer. If it is dispersed and mixed, it can be easily obtained.
[0021]
The preferable blending ratio of the gas absorbent in the adhesive composition of the present invention may be appropriately adjusted depending on the component forming the adhesive, the purpose of use of the adhesive, the use environment, the object to be bonded, etc., for example, the characteristics of the adhesive itself In order to impart an aldehyde gas absorption effect to the adhesive without impairing the adhesive, a ratio of 0.1 to 10% by weight (hereinafter simply referred to as%) is preferable with respect to the solid content of the adhesive. When the resin component in the adhesive composition of the present invention is used as a binder for a gas absorbent and a large amount of the gas absorbent is adhered to an object to be bonded to exert its aldehyde gas absorbency, it is 10 for the solid content of the paint. A proportion of ˜60% is preferred. However, when it is desired to obtain a stronger effect such as long-term persistence of the aldehyde gas absorption effect or quick curing, the blending ratio can be increased as appropriate.
[0022]
○ Adhesion and curing method There is no particular limitation on the method of applying the adhesive composition of the present invention, and brush coating, spray coating, dip coating, etc., adhesive film forming elements, according to known methods depending on the properties of the adhesive, etc. What is necessary is just to apply. When applying the adhesive composition of the present invention, not only a part of the surface but also the entire surface of the article can be covered.
Further, the method for curing the adhesive composition of the present invention is not particularly limited, and any method such as room temperature drying, heating, irradiation with ultraviolet rays, visible light, or an electron beam may be used. Accordingly, a curing means can be appropriately employed according to a known method.
[0023]
Applicable Object The adhesive composition of the present invention can be used in various fields that require the absorbability of aldehyde gas, and the object to be applied is not limited. Specific examples of applications include hospitals, schools, general housing, food factories, automobiles, airplanes, railway vehicles, and other transportation facilities, bathrooms, toilets, or kitchen walls, ceilings, floor wallpaper, flooring, etc. There are surfaces of electrical products such as refrigerators and microwave ovens, and laminated wood such as plywood. Adhesive components formed by filling these voids with the adhesive composition of the present invention can absorb bad odors such as acetaldehyde odor causing cigarette odor and formaldehyde odor generated from wallpaper and the like.
[0024]
【Example】
Hereinafter, the present invention will be described more specifically.
O Preparation method of aldehyde gas absorbent The aldehyde gas absorbent in the present invention was obtained by the following method.
1 g of silicon dioxide powder is added to a predetermined amount of amine compound, and 10 g of pure water is further added, followed by sufficient stirring. Shake for 2 hours at 40 ° C. Thereafter, the slurry is filtered with a Buchner funnel and washed with pure water until the electrical conductivity of the filtrate is 20 μS / cm or less. The washed powder was dried at 100 ° C. for 12 hours to obtain an aldehyde gas absorbent.
[0025]
(Examples 2-3 and Comparative Examples 1-5) The aldehyde gas absorbents thus obtained (Table 1: Examples 2-3 below) and conventional aldehyde gas absorbents a-c (Table 1: Comparative Examples below) 1-3), and 5 parts of activated carbon (Comparative Example 4) per 100 parts by weight of starch-based adhesive (hereinafter simply referred to as “parts”) were added to obtain a deodorant adhesive composition. Moreover, the thing which does not add an aldehyde gas absorber as a comparison was also prepared (Comparative Example 5). The adhesive composition thus obtained was applied to a 5 cm × 10 cm wallpaper, and then applied to an MDF (medium density laminated material) having the same dimensions and a thickness of 8 mm, followed by natural drying overnight to prepare a sample. The MDF used was E1 classification specified by JIS (Japanese Industrial Standards). The E1 category is a plywood that diffuses formaldehyde at an average concentration of 5 mg / L or less by the test method specified in JIS A-5908.
[0026]
[Table 1]
Figure 0004415417
[0027]
(Formaldehyde gas absorption test)
Samples obtained in Examples and Comparative Examples were placed in a Tedlar bag (5 liters) and sealed, and after 24 hours, the formaldehyde gas concentration in the Tedlar bag was measured with a formaldehyde gas concentration detector, Holmtector (New Cosmos Electric Co., Ltd., model XP-308). And it measured using the detection tube (made by Gastec Co., Ltd.).
The test results obtained as described above are shown in Table 2 below.
[0028]
[Table 2]
Figure 0004415417
[0029]
【The invention's effect】
The cured product formed by the adhesive composition of the present invention has an excellent absorption capacity for aldehyde gas, and is used in many fields.

Claims (1)

比表面積が50〜900m2/g、平均細孔径が0.1〜10nm、含水率が0.5〜20重量%である多孔質二酸化ケイ素に、下記式で表されるポリアミン化合物を二酸化ケイ素1gあたり、0.02〜2.0mmol担持させたアルデヒドガス吸収剤を含有することを特徴とする消臭性接着剤組成物。
Figure 0004415417
To a porous silicon dioxide having a specific surface area of 50 to 900 m 2 / g, an average pore diameter of 0.1 to 10 nm, and a water content of 0.5 to 20% by weight, a polyamine compound represented by the following formula is added to 1 g of silicon dioxide. A deodorant adhesive composition characterized by containing an aldehyde gas absorbent supported in an amount of 0.02 to 2.0 mmol.
Figure 0004415417
JP09438099A 1999-03-31 1999-03-31 Deodorant adhesive composition Expired - Lifetime JP4415417B2 (en)

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JP2003096430A (en) * 2001-09-19 2003-04-03 Toagosei Co Ltd Deodorant adhesive composition for automobile interim
JP2005105172A (en) * 2003-09-30 2005-04-21 Toppan Forms Co Ltd Pressure sensitive adhesive composition with reduced odor and sheet using the same
JP2005350627A (en) * 2004-06-14 2005-12-22 Cemedine Co Ltd Chloroprene-based adhesive composition
ITMI20052496A1 (en) 2005-12-27 2007-06-28 Getters Spa COMPOSITE SYSTEMS GAS ABSORBERS AND METHODS FOR THEIR PRODUCTION
CN107349762B (en) * 2017-09-15 2020-05-05 广州欧派集成家居有限公司 Formaldehyde-removing odor-removing composition and preparation method and application thereof

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