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JP2004089993A - Aldehyde compound absorbent for building materials and building materials blended or coated with the base material - Google Patents

Aldehyde compound absorbent for building materials and building materials blended or coated with the base material Download PDF

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Publication number
JP2004089993A
JP2004089993A JP2003197381A JP2003197381A JP2004089993A JP 2004089993 A JP2004089993 A JP 2004089993A JP 2003197381 A JP2003197381 A JP 2003197381A JP 2003197381 A JP2003197381 A JP 2003197381A JP 2004089993 A JP2004089993 A JP 2004089993A
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Prior art keywords
compound
absorbent
aldehyde
aldehyde compound
building material
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JP2003197381A
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Japanese (ja)
Inventor
Nobuhiko Ueno
上野 信彦
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Mitsubishi Chemical Corp
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Mitsubishi Chemical Corp
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Abstract

【課題】建材から発生するアルデヒド系化合物を効率よく吸収し再放出しない吸収剤および建材を提供する。
【解決手段】アルデヒド系化合物及びアンモニウム化合物を含む接着剤を使用した建材から発生するアルデヒド系化合物用の吸収剤であることを特徴とするヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤、 アルデヒド系化合物及びアンモニウム化合物を含む接着剤を使用した建材において、ヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤が配合または塗布されていることを特徴とする建材。
The present invention provides an absorbent and a building material that efficiently absorbs an aldehyde compound generated from the building material and does not re-release the aldehyde compound.
An absorbent for an aldehyde compound containing a hydrazide compound or a triazole compound as an active ingredient, which is an absorbent for an aldehyde compound generated from a building material using an adhesive containing an aldehyde compound and an ammonium compound. A building material using an adhesive containing an aldehyde compound and an ammonium compound, wherein the aldehyde compound absorbent containing a hydrazide compound or a triazole compound as an active ingredient is blended or applied.

Description

【0001】
【発明の属する技術分野】
本発明は、建材中の接着剤より発生するアルデヒド系化合物を効率よく吸収し、かつ再放出しないアルデヒド系化合物の吸収剤、及びこれを基材に配合または塗布した建材に関するものである。
【0002】
【従来の技術】
従来、建築物や家具などの表面材として、合板、パーティクルボード、中密度繊維板(MDF)のような建材が用いられている。合板は単板を接着剤で接着して製板したものであり、パーティクルボードおよびMDFは植物繊維質に接着剤を添加して製板したものである。一般的にこれらの建材には、接着剤として尿素系、メラミン系、レゾルシノール系の接着剤が使用されている。
【0003】
この接着剤の接着原理としては、ホルムアルデヒド等のアルデヒドによる架橋反応である。ところが、これらの接着剤には遊離のホルムアルデヒドが含まれており、また樹脂の分解によってホルムアルデヒドが遊離してくる。最近になってこのホルムアルデヒドが建材から住空間に放出され、アレルギー反応(シックハウス症候群、シックビル症候群)を引き起こし問題となっている。
【0004】
これらの問題の解決策として、酢酸ビニル系のホルムアルデヒドを含まない接着剤を開発したり、放出されるホルムアルデヒドを捕捉することの出来る薬剤を開発したり、という動きが盛んである。例えば、ホルムアルデヒド捕捉剤としては、従来、尿素、チオ尿素、エチレン尿素、ジシアンジアミド、グリオキザールモノウレイン等が知られている。
【0005】
【本発明が解決しようとする課題】
しかし、これらのホルムアルデヒド捕捉剤は、性能・コストの点から充分な性能を持つまでには至っていない。またこれらのホルムアルデヒド吸収剤は低分子化合物であることが多く、使用状態によってアルデヒド吸収剤がブリードしたり、揮発してしまうことがある。また、温度・湿度などの条件の変化によって一度捕まえたアルデヒド系化合物を再放出してしまうおそれがあった。
【0006】
そこで、建材中の接着剤から発生するアルデヒド系化合物を効率よく吸収し再放出しない吸収剤および建材の開発が望まれていた。
【0007】
【発明を解決するための手段】
そこで研究者は上記課題を解決すべく鋭意検討した結果、アルデヒド系化合物及びアンモニウム化合物を含む接着剤を使用した建材から発生するアルデヒド系化合物用の吸収剤であることを特徴とするヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤、アルデヒド系化合物及びアンモニウム化合物を含む接着剤を使用した建材において、ヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤が配合または塗布されていることを特徴とする建材、ヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤を、アルデヒド系化合物及びアンモニウム化合物を含む建材に対して配合または塗布することを特徴とする建材から発生するアルデヒド系化合物の処理方法においては、アルデヒド系化合物を効率よく吸収し再放出しないことを見出し本発明に到達した。
【0008】
すなわち、本発明は、アルデヒド系化合物及びアンモニウム化合物を含む接着剤を使用した建材から発生するアルデヒド系化合物用の吸収剤であることを特徴とするヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤、アルデヒド系化合物及びアンモニウム化合物を含む接着剤を使用した建材において、ヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤が配合または塗布されていることを特徴とする建材、及びヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤を、アルデヒド系化合物及びアンモニウム化合物を含む建材に対して配合または塗布することを特徴とする建材から発生するアルデヒド系化合物の処理方法に存する。
【0009】
【発明の実施の形態】
以下、本発明を詳細に説明する。本発明で使用するヒドラジン系ホルマリン吸収剤であるヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤としては、それぞれ市販品である大塚化学社製ケムキャッチH−6000或いはケムキャッチT−6900などがあげられる。尚、ケムキャッチH−6000がヒドラジド化合物を有効成分とすることは特開2000−107275号公報、特開2000−169757号公報にて知られており、ケムキャッチT−6900がトリアゾール化合物を有効成分とすることは特開2001−19819号公報、特開2000−179133号公報で知られている。尚、アルデヒド系化合物とは、分子中にアルデヒド基を有する化合物であって、ホルムアルデヒド、アセトアルデヒド等である。本発明は、特にホルムアルデヒドの吸収力に優れている。
【0010】
本発明は、建材の基材に配合または塗布される。本発明を使用できる建材としては、アルデヒド系化合物を放出する可能性がある建材全てであるが、木材合板、パーティクルボード、中密度繊維板(MDF)、フェノール−ホルムアルデヒド樹脂、メラミン−ホルムアルデヒド樹脂、尿素−ホルムアルデヒド樹脂、グアナミンホルムアルデヒド樹脂、またはこれらの基材の上に合成樹脂シートが接着された化粧シートが例示される。中でも、本発明は、板と板を接着剤で張り合わせた合板への使用に適している。
【0011】
本発明は、通常1〜20重量%の溶液、好ましくは5〜15重量%の溶液の形で使用する。上記の溶液を、通常、目的の建材の基材の片面、若しくは両面に塗工し、乾燥する。また建材が多層に渡る場合、その間の層に上記の溶液を塗布し使用する事もできる。又、基材中に本発明を配合することも可能である。建材の基材がパーティクルボードやMDFである場合は、接着剤中に直接本発明を含む添加剤を混ぜ込むこともできる。接着剤中に本発明を混ぜ込んだ場合、接着剤中の未反応のアルデヒド化合物と本発明が接着剤中で反応するので、その結果、建材の機械的強度、例えば、はく離強さ、曲げ強さ等が向上するという副次的効果もある。アルデヒド系化合物を建材の外部に漏らさない為には、建材の基材の表面に水溶液を塗工する方法が好ましい。
【0012】
本発明の建材の基材への塗工方法としては、上記の建材の上に、本発明に係わる重合体の単独溶液または他の塗工用薬剤と混合した塗工液をグラビアロール、ロールコーター、ナイフコーター、スプレーコーター、サイズプレス、ブレードコーターあるいはキャレンダーで行う。塗布量としては、片面に対して、通常0.0001〜0.1g/cm2(乾燥後のポリマー量)、好ましくは0.0005〜0.05g/cm2(乾燥後のポリマー量)である。
【0013】
本発明は、アルデヒド系化合物の優れた吸収能を持つことを特徴としている。また、通常ホルマリン吸収剤を使用するとホルマリンが持つ殺菌作用が失われることから、合板、建材にカビが生えることが懸念されるが、本発明には殺菌作用があるのでその心配もない。
【0014】
【実施例】
以下、本発明を、実施例により更に詳細に説明するが、本発明はその要旨を越えない限り、特にこれらに限定されるものではない。
【0015】
実施例1(ホルムアルデヒド放出量調査)
尿素系樹脂接着剤(JIS  K9801−95、日本化成製)を用いて以下に示す合板(40cm×40cm)を調整した。
【0016】
市販のポリマーA(ヒドラジン系ホルマリン吸収剤:ケムキャッチH−6000(ヒドラジド化合物))を用いて2.5重量%水溶液を調整し、スプレーを用いて上記の合板に片面10g(20g/両面)塗布し、ポリ袋に密封して養生(約48時間)、その後カットして試験に供した。
【0017】
よって吸収剤は表面のみ散布されており、木口面は無処理となる。ホルムアルデヒドの量はガス検知管を用いて定量した。試験は、養生直後と1週間後の2回行った。
【0018】
(接着剤組成物配合)
尿素系樹脂接着剤        100部
小麦粉(日清製粉、赤花)  20部
水(水道水)                5部
塩化アンモニウム            1部
【0019】
(合板製造条件)
材種:ラワン
単板構成:1.3mm+3.5mm+1.3mm(6.1mm、3プライ)
単板含水率:8〜10%
塗布量    :34g/尺2
堆積時間  :15分間
冷圧圧力・時間:12kg/cm2・30分間
熱圧圧力・時間・温度:10kg/cm2・120秒・120℃
【0020】
実施例2
市販のポリマーA(ヒドラジン系ホルマリン吸収剤:ケムキャッチH−6000(ヒドラジド化合物))の代わりに、市販のポリマーB(ヒドラジン系ホルマリン吸収剤:ケムキャッチT−6900(トリアゾール化合物))を用いた以外は実施例1と同様の方法で試験片を作成し、評価を行った。
【0021】
比較例1
市販のポリマーA(ヒドラジン系ホルマリン吸収剤:ケムキャッチH−6000(ヒドラジド化合物))の代わりに尿素を用いた以外は実施例1と同様の方法で試験片を作成し、評価を行った。
【0022】
比較例2
市販のポリマーA(ヒドラジン系ホルマリン吸収剤:ケムキャッチH−6000(ヒドラジド化合物))の代わりに水だけを塗布した以外は実施例1と同様の方法で試験片を作成し、評価を行った。実施例と比較例の評価結果を表1に示す。
【0023】
【表1】

Figure 2004089993
【0024】
【発明の効果】
本発明によれば、建材中のアルデヒド系化合物を吸収し、かつ再放出しない。[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to an absorbent of an aldehyde compound that efficiently absorbs an aldehyde compound generated from an adhesive in a building material and does not re-release the aldehyde compound, and a building material in which the aldehyde compound is blended or applied to a base material.
[0002]
[Prior art]
Conventionally, building materials such as plywood, particle board, and medium density fiberboard (MDF) have been used as surface materials for buildings and furniture. Plywood is made by bonding veneers with an adhesive, and particleboard and MDF are made by adding an adhesive to plant fiber. Generally, urea-based, melamine-based, and resorcinol-based adhesives are used in these building materials.
[0003]
The bonding principle of this adhesive is a crosslinking reaction with an aldehyde such as formaldehyde. However, these adhesives contain free formaldehyde, and formaldehyde is released due to decomposition of the resin. Recently, this formaldehyde has been released from building materials into living spaces, causing an allergic reaction (sick house syndrome, sick building syndrome), which has become a problem.
[0004]
As a solution to these problems, there is an active movement to develop a vinyl acetate-based adhesive that does not contain formaldehyde, and to develop a drug that can capture released formaldehyde. For example, urea, thiourea, ethylene urea, dicyandiamide, glyoxal monourein and the like are conventionally known as formaldehyde scavengers.
[0005]
[Problems to be solved by the present invention]
However, these formaldehyde scavengers have not yet achieved sufficient performance in terms of performance and cost. In addition, these formaldehyde absorbents are often low molecular compounds, and the aldehyde absorbent may bleed or volatilize depending on the use condition. Further, there is a possibility that the aldehyde compound once caught may be released again due to a change in conditions such as temperature and humidity.
[0006]
Therefore, development of an absorbent and a building material that efficiently absorbs an aldehyde-based compound generated from an adhesive in the building material and does not release it again has been desired.
[0007]
[Means for Solving the Invention]
Researchers have conducted intensive studies to solve the above problems, and as a result, have found that the hydrazide compound or triazole is an absorbent for aldehyde compounds generated from building materials using an adhesive containing an aldehyde compound and an ammonium compound. In a building material using an aldehyde compound absorbent containing a compound as an active ingredient and an adhesive containing an aldehyde compound and an ammonium compound, an aldehyde compound absorbent containing a hydrazide compound or a triazole compound as an active ingredient is blended or applied. A aldehyde compound generated from a building material characterized in that an aldehyde compound absorbent containing a hydrazide compound or a triazole compound as an active ingredient is blended or applied to a building material containing an aldehyde compound and an ammonium compound. In the processing method of the system compounds and we have reached the present invention that no re-emit efficiently absorbing aldehyde compound.
[0008]
That is, the present invention is an aldehyde compound containing a hydrazide compound or a triazole compound as an active ingredient, which is an absorbent for an aldehyde compound generated from a building material using an adhesive containing an aldehyde compound and an ammonium compound. In a building material using an adhesive containing an absorbent, an aldehyde compound and an ammonium compound, a building material characterized in that an aldehyde compound absorbent containing a hydrazide compound or a triazole compound as an active ingredient is blended or coated, and a hydrazide. An aldehyde compound absorbent containing a compound or a triazole compound as an active ingredient is blended or applied to a building material containing an aldehyde compound and an ammonium compound.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail. The hydrazide compound or triazole compound which is a hydrazine-based formalin absorbent used as the aldehyde-based compound absorbent used as the active ingredient in the present invention is commercially available Chemcat H-6000 or Chemcat T-6900 manufactured by Otsuka Chemical Co., respectively. And so on. It is known from JP-A-2000-107275 and JP-A-2000-169775 that Chemcat H-6000 contains a hydrazide compound as an active ingredient, and Chemcat T-6900 contains a triazole compound as an active ingredient. This is known from Japanese Patent Application Laid-Open Nos. 2001-19819 and 2000-179133. The aldehyde compound is a compound having an aldehyde group in the molecule, such as formaldehyde and acetaldehyde. The present invention is particularly excellent in formaldehyde absorption.
[0010]
The present invention is blended or applied to a base material of a building material. The building materials to which the present invention can be used include all building materials that may release aldehyde compounds, such as wood plywood, particle board, medium density fiberboard (MDF), phenol-formaldehyde resin, melamine-formaldehyde resin, and urea. -A formaldehyde resin, a guanamine formaldehyde resin, or a decorative sheet in which a synthetic resin sheet is adhered on a base material thereof. In particular, the present invention is suitable for use in a plywood in which a plate and a plate are bonded with an adhesive.
[0011]
The invention is usually used in the form of a 1-20% by weight solution, preferably a 5-15% by weight solution. The above solution is usually applied to one or both sides of the base material of the target building material and dried. When the building material is multi-layered, the above-mentioned solution can be applied to the layers between them and used. It is also possible to incorporate the present invention into a substrate. When the base material of the building material is particle board or MDF, the additives including the present invention can be directly mixed into the adhesive. When the present invention is mixed into an adhesive, the unreacted aldehyde compound in the adhesive reacts with the present invention in the adhesive, and as a result, the mechanical strength of the building material, for example, peel strength, flexural strength There is also a secondary effect that the quality is improved. In order to prevent the aldehyde compound from leaking out of the building material, a method of applying an aqueous solution to the surface of the base material of the building material is preferable.
[0012]
As a method of coating the building material of the present invention on a substrate, a coating solution obtained by mixing a coating solution obtained by mixing the above-mentioned building material with a single solution of the polymer according to the present invention or another coating agent, a gravure roll or a roll coater , Knife coater, spray coater, size press, blade coater or calender. The coating amount is usually 0.0001 to 0.1 g / cm2 (polymer amount after drying), and preferably 0.0005 to 0.05 g / cm2 (polymer amount after drying) on one side.
[0013]
The present invention is characterized by having an excellent ability to absorb aldehyde compounds. In addition, if a formalin absorbent is used, the bactericidal action of formalin is usually lost, and there is a concern that mold may grow on plywood and building materials. However, the present invention has a bactericidal action, so there is no concern.
[0014]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not particularly limited thereto without departing from the gist thereof.
[0015]
Example 1 (Formaldehyde emission investigation)
A plywood (40 cm × 40 cm) shown below was prepared using a urea-based resin adhesive (JIS K9801-95, manufactured by Nippon Kasei).
[0016]
A 2.5 wt% aqueous solution was prepared using a commercially available polymer A (hydrazine-based formalin absorbent: Chemcatch H-6000 (hydrazide compound)), and 10 g (20 g / both sides) of the above plywood was applied to the plywood using a spray. Then, they were sealed in a plastic bag and cured (about 48 hours), and then cut and subjected to a test.
[0017]
Therefore, the absorbent is sprayed only on the surface, and the kiguchi surface is untreated. The amount of formaldehyde was determined using a gas detector tube. The test was performed twice immediately after curing and one week later.
[0018]
(Adhesive composition formulation)
Urea resin adhesive 100 parts Wheat flour (Nisshin Flour Milling Co., Ltd., red flower) 20 parts Water (tap water) 5 parts Ammonium chloride 1 part
(Plywood manufacturing conditions)
Material type: Rawan single plate configuration: 1.3 mm + 3.5 mm + 1.3 mm (6.1 mm, 3 plies)
Veneer moisture content: 8-10%
Coating amount: 34 g / size 2
Deposition time: 15 minutes cold pressure, time: 12 kg / cm2, 30 minutes hot pressure, time, temperature: 10 kg / cm2, 120 seconds, 120 ° C
[0020]
Example 2
A commercial polymer B (hydrazine-based formalin absorbent: Chemcat T-6900 (triazole compound)) was used instead of the commercially available polymer A (hydrazine-based formalin absorbent: Chemcat H-6000 (hydrazide compound)) Prepared a test piece in the same manner as in Example 1 and evaluated.
[0021]
Comparative Example 1
Test pieces were prepared and evaluated in the same manner as in Example 1 except that urea was used instead of commercially available polymer A (hydrazine-based formalin absorbent: Chemcatch H-6000 (hydrazide compound)).
[0022]
Comparative Example 2
Test pieces were prepared and evaluated in the same manner as in Example 1 except that only water was applied instead of the commercially available polymer A (hydrazine-based formalin absorbent: Chemcatch H-6000 (hydrazide compound)). Table 1 shows the evaluation results of the examples and the comparative examples.
[0023]
[Table 1]
Figure 2004089993
[0024]
【The invention's effect】
According to the present invention, an aldehyde compound in a building material is absorbed and not released again.

Claims (3)

アルデヒド系化合物及びアンモニウム化合物を含む接着剤を使用した建材から発生するアルデヒド系化合物用の吸収剤であることを特徴とするヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤。An aldehyde compound absorbent comprising a hydrazide compound or a triazole compound as an active ingredient, which is an absorbent for an aldehyde compound generated from a building material using an adhesive containing an aldehyde compound and an ammonium compound. アルデヒド系化合物及びアンモニウム化合物を含む接着剤を使用した建材において、ヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤が配合または塗布されていることを特徴とする建材。A building material using an adhesive containing an aldehyde compound and an ammonium compound, wherein an aldehyde compound absorbent containing a hydrazide compound or a triazole compound as an active ingredient is blended or applied. ヒドラジド化合物或いはトリアゾール化合物を有効成分とするアルデヒド系化合物吸収剤を、アルデヒド系化合物及びアンモニウム化合物を含む建材に対して配合または塗布することを特徴とする建材から発生するアルデヒド系化合物の処理方法。A method for treating an aldehyde compound generated from a building material, comprising blending or applying an aldehyde compound absorbent containing a hydrazide compound or a triazole compound as an active ingredient to a building material containing an aldehyde compound and an ammonium compound.
JP2003197381A 2000-07-04 2003-07-15 Aldehyde compound absorbent for building materials and building materials blended or coated with the base material Pending JP2004089993A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1905560A1 (en) * 2006-09-28 2008-04-02 Nichiha Corporation Fiber board capable of capturing and decomposing aldehyde
JP2009268510A (en) * 2008-04-30 2009-11-19 Jgc Catalysts & Chemicals Ltd Antibacterial deodorant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1905560A1 (en) * 2006-09-28 2008-04-02 Nichiha Corporation Fiber board capable of capturing and decomposing aldehyde
KR100890351B1 (en) * 2006-09-28 2009-03-25 니치하 가부시키가이샤 Fiber board having efficiency of aldehyde absorption
JP2009268510A (en) * 2008-04-30 2009-11-19 Jgc Catalysts & Chemicals Ltd Antibacterial deodorant

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