JPH064836B2 - Method for producing amino resin adhesive - Google Patents
Method for producing amino resin adhesiveInfo
- Publication number
- JPH064836B2 JPH064836B2 JP14296085A JP14296085A JPH064836B2 JP H064836 B2 JPH064836 B2 JP H064836B2 JP 14296085 A JP14296085 A JP 14296085A JP 14296085 A JP14296085 A JP 14296085A JP H064836 B2 JPH064836 B2 JP H064836B2
- Authority
- JP
- Japan
- Prior art keywords
- amino resin
- adhesive
- resin adhesive
- present
- producing amino
- 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.)
- Expired - Fee Related
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はアミノ樹脂接着剤の製造方法に関するもので、
特に木材、紙、布などの接着に好適な接着剤を提供する
ことにある。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a method for producing an amino resin adhesive,
Particularly, it is to provide an adhesive suitable for bonding wood, paper, cloth and the like.
従来、木材、紙、布などの接着にアミノ樹脂液を使用す
る場合、被着材への樹脂の浸透性を防ぐために増量剤や
充填剤を配合し、接着に際しては加熱圧締したり長時間
冷圧圧締して接着する方法がとられていた。また、加圧
時間を短縮するために、あらかじめエマルジョン化した
アミノ樹脂を使用する方法もあるが、この場合、接着層
の乾燥が早すぎて、接着剤のフロー不足を生じ、安定し
た接着性を得ることができなかった。Conventionally, when an amino resin liquid is used for adhesion of wood, paper, cloth, etc., an extender or filler is blended in order to prevent the resin from penetrating into the adherend, and heating and pressing for a long time or long time is used for adhesion. A method of bonding with cold compression was adopted. There is also a method of using an amino resin that has been emulsified in advance in order to shorten the pressurizing time, but in this case, the adhesive layer dries too quickly, causing insufficient flow of the adhesive, resulting in stable adhesiveness. I couldn't get it.
そのため、アミノ樹脂エマルジョンの優れた初期接着性
能を生かしつつ、速乾性を抑えて安定した接着性能を得
る方法の開発が課題となっていた。Therefore, development of a method for obtaining stable adhesive performance while suppressing quick-drying has been an issue while taking advantage of the excellent initial adhesive performance of the amino resin emulsion.
また、一方、従来のアミノ樹脂接着剤を使用して薄単板
を接着したときに、接着剤が単板表面まで浸透し、表面
を汚染するなどの問題や、長時間の冷圧圧締による接着
作業の能率低下などの問題があった。On the other hand, when using conventional amino resin adhesives to bond thin veneers, the problem that the adhesive permeates the veneer surface and contaminates the surface, as well as long-term cold pressure pressing There were problems such as reduced work efficiency.
このような問題を解決するために、本発明者らは鋭意研
究を重ねた結果、アミノ樹脂エマルジョンが従来のアミ
ノ樹脂接着剤と粒子の凝集をまったく起さずに混合でき
ること、および、その両者を任意の割合で混合すること
によって安定な接着性能を有し、かつ優れた初期接着性
能を有する接着剤が得られることを見出し、本発明を完
成するに至った。In order to solve such a problem, the inventors of the present invention have conducted extensive studies, and as a result, the amino resin emulsion can be mixed with the conventional amino resin adhesive without causing any aggregation of particles, and It has been found that an adhesive having stable adhesive performance and excellent initial adhesive performance can be obtained by mixing at an arbitrary ratio, and the present invention has been completed.
すなわち、本発明は、アミノ樹脂エマルジョン100重量
部に、従来からアミノ樹脂接着剤として使用されている
アミノ樹脂液を５〜１００重量部混合し、さらに、必要
に応じて増量剤、充填剤、硬化剤を配合することを特徴
とするアミノ樹脂接着剤の製造方法である。That is, in the present invention, 100 parts by weight of an amino resin emulsion is mixed with 5 to 100 parts by weight of an amino resin liquid which has been conventionally used as an amino resin adhesive, and further, if necessary, a filler, a filler, and a curing agent. A method for producing an amino resin adhesive, which comprises blending an agent.
本発明方法においては、アミノ樹脂エマルジョンとアミ
ノ樹脂液との混合比によって、初期接着性や被着材への
樹脂の浸透性をコントロールすることができるが、アミ
ノ樹脂エマルジョン100重量部に対してアミノ樹脂液が
５重量部以下であると、接着層の乾燥性を十分に抑える
ことができず、安定した接着性能を得ることができな
い。一方、アミノ樹脂液が100重量部以上であると、初
期接着性が急速に低下してしまう。In the method of the present invention, it is possible to control the initial adhesiveness and the permeability of the resin into the adherend by controlling the mixing ratio of the amino resin emulsion and the amino resin liquid. When the amount of the resin liquid is 5 parts by weight or less, the drying property of the adhesive layer cannot be sufficiently suppressed, and stable adhesive performance cannot be obtained. On the other hand, when the amount of the amino resin solution is 100 parts by weight or more, the initial adhesiveness is rapidly reduced.
本発明に用いるアミノ樹脂エマルジョンは尿素、チオ尿
素、エチレン尿素、メラミン、ジシアンジアミド、アセ
トグアナミン、ベンゾクアナミンなどのうちから選ばれ
た１種もしくは２種以上とホルムアルデヒドとを、乳化
剤の存在下で反応させてエマルジョン化させたものであ
るが、さらに、これらに、必要に応じて、フェノール、
レゾルシノール、クレゾール、ナフタリン、アルキルレ
ゾルシノール、キシレノール、パラトルエンスルホンア
ミド、アセトン、メチルエチルケトン、シクロヘキサノ
ンなどのうちから選ばれた１種もくは２種以上を共縮合
させたものでも本発明の効果は変らない。The amino resin emulsion used in the present invention is obtained by reacting one or more selected from urea, thiourea, ethylene urea, melamine, dicyandiamide, acetoguanamine, benzoquanamine and formaldehyde with formaldehyde in the presence of an emulsifier. It is emulsified, but if necessary, phenol,
The effect of the present invention does not change even if one or two or more selected from resorcinol, cresol, naphthalene, alkylresorcinol, xylenol, paratoluenesulfonamide, acetone, methyl ethyl ketone, cyclohexanone, etc. are co-condensed. .
また、アミノ樹脂の乳化剤としては、例えばアニオン
系、ノニオン系界面活性剤、ポリビニルアルコールおよ
びその誘導体、カルボキシメチルセルロース、メチルセ
ルロースなどのごときセルロース誘導体、ポリアクリル
酸およびポリメタクリル酸の金属塩、ポリアクリルアミ
ドおよびその誘導体、アラビアガムなどのごとき多糖質
ガム、アルギン酸ソーダ、ポリビニルピロリドンなどの
ごとき水溶性高分子物質などが用いられる。Examples of emulsifiers for amino resins include anionic surfactants, nonionic surfactants, polyvinyl alcohol and its derivatives, cellulose derivatives such as carboxymethyl cellulose and methyl cellulose, metal salts of polyacrylic acid and polymethacrylic acid, and polyacrylamide thereof. Derivatives, polysaccharide gums such as gum arabic, and water-soluble polymer substances such as sodium alginate and polyvinylpyrrolidone are used.
なお、本発明のアミノ樹脂エマルジョンとアミノ樹脂液
を混合してなるアミノ樹脂接着剤は、必要に応じて従来
から用いられている増量剤、充填剤、硬化剤を配合して
使用するものである。The amino resin emulsion of the present invention prepared by mixing the amino resin emulsion and the amino resin liquid is used by blending a conventionally used extender, filler, and curing agent as necessary. .
本発明の方法は、初期接着性に優れていることから短時
間の冷圧接着を可能とし、接着作業能率を著しく改善す
る。Since the method of the present invention is excellent in initial adhesiveness, it enables cold pressure bonding for a short time and significantly improves the bonding work efficiency.
また、不織布、プリント紙や化粧突板を合板などに接着
する際に、加熱圧締時に生ずる接着剤による表面汚染を
著るしく減少させると共にフラッシュパネル、集成材、
フィンガージョイント、紙管、段ボールなどの接着など
にも好適である。In addition, when bonding non-woven fabric, printed paper or decorative veneer to plywood, etc., the surface contamination due to the adhesive that occurs during heating and pressing can be significantly reduced, and flash panels, laminated wood,
It is also suitable for bonding finger joints, paper tubes, corrugated board, and the like.
以下に実施例によって本発明の効果を説明する。 The effects of the present invention will be described below with reference to examples.
実施例１． 37％濃度のホルマリン1200ｇ、尿素250ｇ、メラミン400
ｇ、水450ｇ、ヘキサメチレンテトラミン２ｇ、アクリ
ルアミドとアクリル酸との水溶性共重合体50ｇを三ッ口
フラスコに量りとり、攪拌しながら80℃まで昇温した。
80℃で230分間反応させた後、25％カセイソーダ５ｇを
加え、30℃まで冷却しアミノ樹脂エマルジョンを得た。
このアミノ樹脂エマルジョン100ｇに、市販のユリア樹
脂接着剤（豊年製油KK製：ｕｗー061）を種々の割合で
混合し、小麦粉（日清製粉KK製：花印）で粘度を、それ
ぞれ同一なるよう調整してからペラトルエンスルホン酸
溶液によって糊液PHを4.5（ＢＣＧ試験紙）に調節し、
本発明のアミノ樹脂接着剤を得た。Example 1. 37% formalin 1200g, urea 250g, melamine 400
g, 450 g of water, 2 g of hexamethylenetetramine, and 50 g of a water-soluble copolymer of acrylamide and acrylic acid were weighed in a three-necked flask and heated to 80 ° C. with stirring.
After reacting at 80 ° C for 230 minutes, 5 g of 25% caustic soda was added and cooled to 30 ° C to obtain an amino resin emulsion.
To 100 g of this amino resin emulsion, a commercially available urea resin adhesive (manufactured by Hosei Oil KK: uw-061) was mixed at various ratios, and the viscosities of wheat flour (Nisshin Seiren KK: Hanaji) were adjusted to be the same. After adjusting, adjust the paste solution PH to 4.5 (BCG test paper) with peratoluenesulfonic acid solution,
An amino resin adhesive of the present invention was obtained.
この接着剤の特性を明らかにするために、該接着剤を厚
さ10mm、大きさ25×30mmのカバ材に１平方メートルあた
り150ｇの割合に塗付し、同じ厚さのカバ材を重ねて直
ちに８kg／cm2の圧力を加え、室温下（約２０℃）に放
置した。In order to clarify the characteristics of this adhesive, the adhesive is applied to a cover material having a thickness of 10 mm and a size of 25 × 30 mm at a rate of 150 g per square meter, and the cover material having the same thickness is immediately overlaid. A pressure of 8 kg / cm 2 was applied and the mixture was left at room temperature (about 20 ° C).
所定時間ごとに圧縮せん断強さを測定し、常態強度が４
０Kg／cm2を越える時間を測定した。その結果は次表の
ようになった。Compressive shear strength is measured every predetermined time and normal strength is 4
The time over 0 kg / cm 2 was measured. The results are shown in the table below.
実施例２ 実施例１において使用した市販のユリア樹脂接着剤に代
えて市販のメラミン・ユリア共縮合樹脂接着剤（豊年製
油KK製：MW-081）を使用したほかは実施例１と全く同様
にして本発明のアミノ樹脂接着剤を得た。 Example 2 The same as Example 1 except that a commercially available melamine-urea co-condensation resin adhesive (Hosei Oil KK: MW-081) was used in place of the commercially available urea resin adhesive used in Example 1. To obtain the amino resin adhesive of the present invention.
この接着剤の特性を明らかにするために、該接着剤を、
30cm×30cmサイズで厚さ2.5mmのラワン合板に15g/900cm
2（片面）の割合で塗付し、直ちに厚さ0.2mmのナラ温潤
突板を重ね合わせて、120℃に保持したホットプレスに
挿入し、8Kg／cm2の圧力で１分間熱圧した。そのあと室
温まで冷却し、突板表面の接着剤の浸み出し汚染を観察
した。その結果を次表に示した。In order to clarify the characteristics of this adhesive,
15g / 900cm on a 30cm x 30cm size 2.5mm thick lauan plywood
It was applied at a ratio of 2 (one side), and a 0.2 mm-thick oak-warm veneer plate was immediately overlaid, inserted into a hot press maintained at 120 ° C., and hot pressed at a pressure of 8 kg / cm 2 for 1 minute. After that, it was cooled to room temperature, and the leaching contamination of the adhesive on the surface of the veneer was observed. The results are shown in the table below.
実施例３ 37％濃度のホルマリン210ｇ、尿素30ｇ、メラミン48ｇ
を容量500mlの三ッ口フラスコに量り取り、第３リン酸
ソーダを加えてPH9.6とし、攪拌しながら90℃まで昇温
した。９０℃で30分間反応させてから20％ギ酸水溶液を
加えて反応液のPHを5.0とし、縮合反応を続けた。反応
液を20℃まで冷却して白濁する時点で第３リン酸ソーダ
を加えて反応液のPHを9.0にすると同時に反応液温度を5
0℃まで冷却した。次いで、アセトン１０ｇおよびポリ
ビニルアクコール（KKクラレ製＋205）2.0gとノニオン
系界面活性剤（ライオンKK製、リボノックス）0.7ｇを
加え、２０分間反応させた後80℃に昇温して、さらに30
間反応させた。その後、20％ギ酸水溶液を加えて反応液
のPHを5.0にし、約60分間反応を続け、反応液がエマル
ジョン化した時点で第３リン酸ソーダを加えてPHを7.5
として冷却した。 Example 3 Formalin with a concentration of 37% 210 g, urea 30 g, melamine 48 g
Was weighed into a three-necked flask having a capacity of 500 ml, sodium phosphide phosphate was added to adjust the pH to 9.6, and the temperature was raised to 90 ° C. with stirring. After reacting at 90 ° C. for 30 minutes, a 20% formic acid aqueous solution was added to adjust the pH of the reaction solution to 5.0, and the condensation reaction was continued. When the reaction solution is cooled to 20 ° C and becomes cloudy, sodium phosphate is added to adjust the pH of the reaction solution to 9.0 and the reaction solution temperature is set to 5
Cooled to 0 ° C. Next, 10 g of acetone, 2.0 g of polyvinyl accor (KK Kuraray +205) and 0.7 g of nonionic surfactant (Lion KK, Ribonox) were added, and after reacting for 20 minutes, the temperature was raised to 80 ° C. and further 30
Reacted for a while. Then, add a 20% formic acid aqueous solution to adjust the pH of the reaction solution to 5.0, and continue the reaction for about 60 minutes. When the reaction solution becomes an emulsion, sodium phosphate 3 is added to adjust the pH to 7.5.
As cooled.
このようにして得たアミノ樹脂エマルジョンと市販のユ
リア樹脂接着剤（豊年製油KK製：ULー002）とを種々の
割合で混合し、さらに、小麦粉、硬化剤を配合して本発
明のアミノ樹脂接着剤を得た。この接着剤の特性を明ら
にするために、該接着剤を厚さ2.5mmのワラン単板に35
ｇ／900cm2（両面）の割合で塗付し、30℃の強制循環式
恒温器中に10〜20分放置した。The amino resin emulsion obtained in this manner and a commercially available urea resin adhesive (manufactured by Hosei Oil KK: UL-002) are mixed at various ratios, and wheat flour and a curing agent are further mixed to prepare the amino resin of the present invention. An adhesive was obtained. In order to clarify the characteristics of this adhesive, the adhesive is applied to a waran veneer with a thickness of 2.5 mm.
It was applied at a rate of g / 900 cm 2 (both sides) and left in a forced circulation type incubator at 30 ° C. for 10 to 20 minutes.
しかる後、同じ厚さのラワン単板を繊維方向が互いに直
交するよう上下に重ね合わせ、10Kg／cm2の圧力で15分
仮圧締したのち120℃に保ったホットプレスに挿入し、
８Kg／cm2で４分間加熱圧縮した。その後１週間室内に
放置したのち、常態接着強さを測定した。その結果を次
表に示した。After that, lauan veneers of the same thickness are stacked vertically so that the fiber directions are orthogonal to each other, temporarily clamped at a pressure of 10 kg / cm 2 for 15 minutes, and then inserted into a hot press maintained at 120 ° C.
It was heat-pressed at 8 kg / cm 2 for 4 minutes. After leaving it for one week in the room, the normal adhesive strength was measured. The results are shown in the table below.
以上の実施例より本発明の優れた効果が明らかである。 The excellent effects of the present invention are apparent from the above examples.
Claims (1)
１００重量部に対してアミノ樹脂液を５〜１００重量部
混合することを特徴とするアミノ樹脂接着剤の製造方
法。1. A method for producing an amino resin adhesive, which comprises mixing 5 to 100 parts by weight of an amino resin liquid with 100 parts by weight of an emulsified amino resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14296085A JPH064836B2 (en) | 1985-06-28 | 1985-06-28 | Method for producing amino resin adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14296085A JPH064836B2 (en) | 1985-06-28 | 1985-06-28 | Method for producing amino resin adhesive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS624768A JPS624768A (en) | 1987-01-10 |
| JPH064836B2 true JPH064836B2 (en) | 1994-01-19 |
Family
ID=15327660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14296085A Expired - Fee Related JPH064836B2 (en) | 1985-06-28 | 1985-06-28 | Method for producing amino resin adhesive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH064836B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641521A (en) * | 1979-09-07 | 1981-04-18 | Hitachi Ltd | Composite type magnetic head and its preparation |
| JP2599793B2 (en) * | 1989-07-14 | 1997-04-16 | 株式会社クラレ | Alkaline cleaning adhesive for paper labels |
| US5063676A (en) * | 1990-02-13 | 1991-11-12 | Gerber Garment Technology, Inc. | Cable drive system for carriage movement and method of use |
| KR100348363B1 (en) * | 2000-08-28 | 2002-08-10 | 김중현 | Preparation of monodispersed Melamine Formaldehyde Beads |
| KR100543545B1 (en) * | 2000-12-28 | 2006-01-20 | 니폰 쇼쿠바이 컴파니 리미티드 | Process for producing amino resin particles |
-
1985
- 1985-06-28 JP JP14296085A patent/JPH064836B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS624768A (en) | 1987-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |