JPH05287253A - Suppression of formation of free formaldehyde from adhesive composition - Google Patents
Suppression of formation of free formaldehyde from adhesive compositionInfo
- Publication number
- JPH05287253A JPH05287253A JP8353192A JP8353192A JPH05287253A JP H05287253 A JPH05287253 A JP H05287253A JP 8353192 A JP8353192 A JP 8353192A JP 8353192 A JP8353192 A JP 8353192A JP H05287253 A JPH05287253 A JP H05287253A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- resin
- plywood
- adhesive composition
- urea
- 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
Links
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、木質系、合板用接着剤
として有用なアミノ樹脂接着剤に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an amino resin adhesive useful as an adhesive for wood and plywood.
【０００２】[0002]
【従来技術】合板又は合板二次加工用の接着剤として、
尿素樹脂、尿素−メラミン共縮合樹脂、フェノール−メ
ラミン共縮合樹脂等のアミノ樹脂組成物が広く使用され
ている。これらは安価で耐水性も良い接着剤であるが、
しかしアミノ樹脂はその主要構成物質がホルムアルデヒ
ドと尿素及びメラミンであるため、これらアミノ系の樹
脂を使用して製造した合板等の中には遊離のホルムアル
デヒドが存在し、又合板製造時の環境諸条件、その他添
加剤、増量剤等の混合により樹脂の一部が分解して新た
に樹脂中に遊離ホルムアルデヒドが発生する欠点が見ら
れる。As an adhesive for plywood or plywood secondary processing,
Amino resin compositions such as urea resin, urea-melamine co-condensation resin and phenol-melamine co-condensation resin are widely used. These are adhesives that are cheap and have good water resistance,
However, since the main constituents of amino resins are formaldehyde, urea and melamine, free formaldehyde is present in plywood produced using these amino resins, and environmental conditions during the production of plywood. However, there is a defect that a part of the resin is decomposed by mixing other additives, a filler, etc., and free formaldehyde is newly generated in the resin.
【０００３】近年、合板製品等から放出されるホルムア
ルデヒドに対する規制が厳しくなり、建築業界、その他
一般社会から遊離ホルムアルデヒドの少ない合板、パー
ティクルボード、ファイバーボード等が強く要望されて
きた。しかし、遊離ホルムアルデヒドを低減すべく接着
剤中のホルムアルデヒド量を減少させると合板製造時の
初期接着強度が低下し、原板のめくれ、ずれ等によるト
ラブルが多発し不良合板が発生していた。In recent years, regulations on formaldehyde released from plywood products and the like have become stricter, and there has been a strong demand from the building industry and other general society for plywood, particle board, fiber board and the like with less free formaldehyde. However, if the amount of formaldehyde in the adhesive is reduced in order to reduce free formaldehyde, the initial adhesive strength at the time of plywood production is lowered, and troubles such as curling and misalignment of the original plate frequently occur, resulting in defective plywood.
【０００４】従って、従来は尿素樹脂、メラミン樹脂等
のアミノ樹脂の製造時にポリビニルアルコール（以下Ｐ
ＶＡと記す）を縮合液に添加することにより、ホルムア
ルデヒド量低下による初期接着強度を補償している。Therefore, conventionally, polyvinyl alcohol (hereinafter referred to as “P”) has been used in the production of amino resins such as urea resins and melamine resins.
VA) is added to the condensate to compensate for the initial adhesive strength due to the reduction in the amount of formaldehyde.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、ＰＶＡ
による初期接着性の効果を高めるためにＰＶＡの量を増
加すると耐水性が低下し、しかも接着剤のコストもアッ
プする。従って、ＰＶＡによるホルムアルデヒド低減策
もまだ不充分であり、更に有効な遊離ホルムアルデヒド
抑制方法が要請されてきた。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
If the amount of PVA is increased in order to enhance the effect of the initial adhesiveness due to, the water resistance decreases and the cost of the adhesive also increases. Therefore, the measure for reducing formaldehyde by PVA is still insufficient, and a more effective method for suppressing free formaldehyde has been demanded.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、上記問題
点を解決するため鋭意研究を行い、本発明を完成するに
到った。すなわち、本発明の接着剤組成物の遊離ホルム
アルデヒドの抑制方法は尿素樹脂、尿素−メラミン共縮
合樹脂又はフェノール−メラミン共縮合樹脂等のアミノ
樹脂による接着剤組成物100 重量部に対して、炭酸アン
モニウム、重炭酸アンモニウム又は炭酸グアニジンの何
れか一つ以上を0.1 〜10重量部含有せしめることを特徴
とするものである。[Means for Solving the Problems] The inventors of the present invention have conducted extensive studies to solve the above problems, and have completed the present invention. That is, the method for suppressing the free formaldehyde of the adhesive composition of the present invention is ammonium carbonate based on 100 parts by weight of the adhesive composition made of an amino resin such as urea resin, urea-melamine co-condensation resin or phenol-melamine co-condensation resin. 0.1 to 10 parts by weight of at least one of ammonium bicarbonate and guanidine carbonate.
【０００７】炭酸アンモニウム等のホルムアルデヒド抑
制物質を接着剤組成物に含有させるには接着剤の配合時
に行えば良く、例えば合板工場等において尿素樹脂に増
量剤として小麦粉、水及び硬化剤の塩化アンモニウムそ
の他を加えてミキサーで混合し、配合糊として単板に塗
布されるが、この配合時に増量剤等と同時に炭酸アンモ
ニウム、重炭酸アンモニウム又は炭酸グアニジンの何れ
か一つ以上を必要量添加混合して配合糊とすれば良い。Formaldehyde-inhibiting substances such as ammonium carbonate may be contained in the adhesive composition at the time of compounding the adhesive. For example, in a plywood factory, urea resin is used as a bulking agent for wheat flour, water and a hardening agent such as ammonium chloride. Is mixed with a mixer and applied to a veneer as a compounding paste. At the time of this compounding, at least one of ammonium carbonate, ammonium bicarbonate or guanidine carbonate is added and mixed in the required amount at the same time as a filler. You can use glue.
【０００８】合板の製造は従来方法により行えば良く、
とくに変わるところはない。本発明の方法は合板用のみ
ならず、一般木工用、パーティクルボード用、ファイバ
ーボード用、紙用、布用、織物加工用等にも勿論適用す
ることができる。The plywood may be manufactured by a conventional method,
There is no particular change. The method of the present invention can be applied not only to plywood, but also to general woodworking, particleboard, fiberboard, paper, cloth, textile processing and the like.
【０００９】[0009]
【発明の効果】本発明によれば、合板より放散するホル
ムアルデヒド量の規制に関するＪＡＳ即ち農林水産省告
示第１３０２号による区分Ｆ−１、Ｆ−２、Ｆ−３にお
いて、Ｆ−２グレード（準無臭タイプ）の尿素樹脂また
は尿素−メラミン共縮合樹脂に適用してＪＡＳ．Ｆ−１
グレード（無臭合板）の製造が可能であり、更にＪＡ
Ｓ．Ｆ−３グレード（有臭合板）の厚物合板用の尿素樹
脂または尿素−メラミン共縮合樹脂に適用してＪＡＳ．
Ｆ−２グレードまたはＦ−１グレードの製造が容易であ
る。EFFECT OF THE INVENTION According to the present invention, JAS concerning the regulation of the amount of formaldehyde emitted from plywood, that is, the F-2 grade (quasi-classified) in the categories F-1, F-2 and F-3 according to the Ministry of Agriculture, Forestry and Fisheries Notification No. 1302. Odorless type) urea resin or urea-melamine co-condensation resin is applied to JAS. F-1
It is possible to manufacture grade (odorless plywood), and JA
S. Applied to urea resin or urea-melamine cocondensation resin for thick plywood of F-3 grade (odorous plywood), JAS.
F-2 grade or F-1 grade can be easily manufactured.
【００１０】また更に合板製造における接着剤配合工程
において混合、攪拌作業中に発生する遊離ホルムアルデ
ヒド臭も極めて低減され、作業環境が極めて改善される
とともに接着剤そのものの性状もホルムアルデヒドの低
減化により粘度が安定化され、塗布工程において塗布量
のむらが無く、しかも合板製造において最も重要な初期
の仮接着性も従来と同等に維持され作業性も極めて良好
である。Further, the odor of free formaldehyde generated during the mixing and stirring operations in the adhesive compounding process in the production of plywood is extremely reduced, the working environment is greatly improved, and the properties of the adhesive itself are reduced by the reduction of formaldehyde. It is stable and has no uneven coating amount in the coating process, and the initial temporary adhesiveness, which is the most important in plywood production, is maintained at the same level as in the past and workability is extremely good.
【００１１】[0011]
【実施例】以下本発明を実施例により更に具体的に説明
するが、勿論本発明は以下の実施例にのみ限定されるも
のではない。The present invention will be described in more detail with reference to the following examples, but of course the present invention is not limited to the following examples.
【００１２】実施例１、２ 厚さ1.0 mmのラワン材を表裏板とし、厚さ2.0 mmのラワ
ン材を中芯板として用い、接着剤として尿素樹脂( 三井
東圧化学製. ユーロイド３１０) 、または尿素・メラミ
ン共縮合樹脂( 三井東圧化学製. ユーロイド３２２) の
それぞれに小麦粉及び塩化アンモニウムと共にホルムア
ルデヒド抑制剤として重炭酸アンモニウムを添加して合
板用接着剤を配合し、それぞれの合板用接着剤につい
て、中芯板の両面に30g/尺2 ( 片面15g/尺2 づつ) の割
合で塗布してこれに表裏単板を貼り合わせた4 mm合板を
製造した。この２種の接着剤による各合板を日本農林規
格（ＪＡＳ法）による接着力試験ともに放出ホルムアル
デヒド濃度の測定結果を各ブランクと対比して表１に示
す。Examples 1 and 2 Using 1.0 mm thick lauan material as the front and back plates and 2.0 mm thick lauan material as the core plate, urea resin (Mitsui Toatsu Kagaku. Euroid 310) as an adhesive, Or urea / melamine co-condensation resin (Mitsui Toatsu Chemical Co., Ltd., Euroid 322) is added to each of plywood adhesives by adding ammonium bicarbonate as a formaldehyde inhibitor together with wheat flour and ammonium chloride, and each plywood adhesive is prepared. for, to produce a 4 mm plywood bonding the front and back veneer on both sides of the central core plate is applied at a rate of 30 g / scale 2 (one-sided 15 g / scale 2 increments) thereto. Table 1 shows the results of measurement of the concentration of released formaldehyde in each of the plywoods made of the two kinds of adhesives in the adhesive strength test according to the Japanese Agricultural Standards (JAS method) in comparison with the blanks.
【００１３】[0013]
【表１】 実施例３、４ 接着剤として尿素樹脂（三井東圧化学製. ユーロイド３
１０）を用い、ホルムアルドヒド抑制剤として炭酸アン
モニウム、または炭酸グァニジンをそれぞれ用い、他は
実施例１と同様に行った例に付き、その結果をブランク
と対比して表２に示す。[Table 1] Examples 3 and 4 Urea resin as an adhesive (manufactured by Mitsui Toatsu Chemical. Euroid 3
10) was used, and ammonium carbonate or guanidine carbonate was used as a formaldehyde inhibitor, respectively, and the other example was performed in the same manner as in Example 1, and the results are shown in Table 2 in comparison with the blank.
【００１４】[0014]
【表２】 実施例５、６ 接着剤として尿素・メラミン樹脂( 三井東圧化学製. ユ
ーロイド３１０) 、または尿素樹脂( 三井東圧化学製.
ユーロイド３１０) ・フェノール・メラミン樹脂( 三井
東圧化学製. ユーロイド８８３) のそれぞれについてホ
ルムアルドヒド抑制剤として重炭酸アンモニウムを用
い、他は実施例１と同様に行った例に付き、その結果を
それぞれブランクと対比して表３に示す。[Table 2] Examples 5 and 6 Urea / melamine resin (manufactured by Mitsui Toatsu Kagaku. Euroid 310) or urea resin (manufactured by Mitsui Toatsu Kagaku.
Euroid 310) -Phenol-melamine resin (manufactured by Mitsui Toatsu Chemicals, Inc. Euroid 883) was used ammonium bicarbonate as a formaldehyde inhibitor, and the other results were obtained in the same manner as in Example 1. The results are shown below. The results are shown in Table 3 in comparison with blanks.
【００１５】[0015]
【表３】 [Table 3]
Claims (1)
フェノール−メラミン共縮合樹脂等のアミノ樹脂による
接着剤組成物100 重量部に対して、炭酸アンモニウム、
重炭酸アンモニウム又は炭酸グアニジンの何れか一以上
を0.1 〜10重量部含有せしめることを特徴とする接着剤
組成物の遊離ホルムアルデヒドの抑制方法。1. Ammonium carbonate, based on 100 parts by weight of an adhesive composition made of an amino resin such as urea resin, urea-melamine co-condensation resin or phenol-melamine co-condensation resin.
A method for suppressing free formaldehyde in an adhesive composition, comprising 0.1 to 10 parts by weight of at least one of ammonium bicarbonate and guanidine carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8353192A JPH05287253A (en) | 1992-04-06 | 1992-04-06 | Suppression of formation of free formaldehyde from adhesive composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8353192A JPH05287253A (en) | 1992-04-06 | 1992-04-06 | Suppression of formation of free formaldehyde from adhesive composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05287253A true JPH05287253A (en) | 1993-11-02 |
Family
ID=13805081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8353192A Pending JPH05287253A (en) | 1992-04-06 | 1992-04-06 | Suppression of formation of free formaldehyde from adhesive composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05287253A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100383251B1 (en) * | 2000-12-02 | 2003-05-12 | 한솔제지주식회사 | Removal method of free formaldehyde from formaldehyde resin |
| WO2007004507A1 (en) * | 2005-07-06 | 2007-01-11 | Ipposha Oil Industries Co., Ltd. | Aldehyde capture material and process for production of plywood with the same |
| JP2007083729A (en) * | 2005-07-06 | 2007-04-05 | Ipposha Oil Ind Co Ltd | Aldehyde scavenger and manufacturing method of wooden board employing the same |
| CN103740306A (en) * | 2013-12-30 | 2014-04-23 | 中南林业科技大学 | Preparation method of wood preservation adhesive |
-
1992
- 1992-04-06 JP JP8353192A patent/JPH05287253A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100383251B1 (en) * | 2000-12-02 | 2003-05-12 | 한솔제지주식회사 | Removal method of free formaldehyde from formaldehyde resin |
| WO2007004507A1 (en) * | 2005-07-06 | 2007-01-11 | Ipposha Oil Industries Co., Ltd. | Aldehyde capture material and process for production of plywood with the same |
| JP2007083729A (en) * | 2005-07-06 | 2007-04-05 | Ipposha Oil Ind Co Ltd | Aldehyde scavenger and manufacturing method of wooden board employing the same |
| EA013599B1 (en) * | 2005-07-06 | 2010-06-30 | Иппоса Ойл Индастриз Ко., Лтд. | Aldehyde (aldehydes) capture material and process for production of plywood with the same |
| AU2006266920B2 (en) * | 2005-07-06 | 2011-12-15 | Ipposha Oil Industries Co., Ltd. | A scavenger for aldehyde(s) and a manufacturing method of a woody panel using the same |
| CN103740306A (en) * | 2013-12-30 | 2014-04-23 | 中南林业科技大学 | Preparation method of wood preservation adhesive |
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