JPH01245076A - Adhesive and bonding process using same - Google Patents
Adhesive and bonding process using sameInfo
- Publication number
- JPH01245076A JPH01245076A JP7265388A JP7265388A JPH01245076A JP H01245076 A JPH01245076 A JP H01245076A JP 7265388 A JP7265388 A JP 7265388A JP 7265388 A JP7265388 A JP 7265388A JP H01245076 A JPH01245076 A JP H01245076A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- weight
- component
- molecular weight
- urethane resin
- 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
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 55
- 239000000853 adhesive Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims description 15
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims abstract description 26
- 125000005442 diisocyanate group Chemical group 0.000 claims abstract description 16
- 229920005862 polyol Polymers 0.000 claims abstract description 11
- 150000003077 polyols Chemical class 0.000 claims abstract description 11
- 229920000728 polyester Polymers 0.000 claims abstract description 10
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002904 solvent Substances 0.000 claims description 11
- 150000002009 diols Chemical class 0.000 claims description 7
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 abstract description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract description 4
- 235000011187 glycerol Nutrition 0.000 abstract description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 description 27
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- AXKZIDYFAMKWSA-UHFFFAOYSA-N 1,6-dioxacyclododecane-7,12-dione Chemical compound O=C1CCCCC(=O)OCCCCO1 AXKZIDYFAMKWSA-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 239000002131 composite material Substances 0.000 description 6
- 239000012948 isocyanate Substances 0.000 description 6
- 150000002513 isocyanates Chemical class 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000001723 curing Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 4
- 239000011120 plywood Substances 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- 239000005058 Isophorone diisocyanate Substances 0.000 description 2
- 239000004823 Reactive adhesive Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- RNQBCZCPNUHWLV-UHFFFAOYSA-N 1,8-dioxacyclotetradecane-2,7-dione Chemical compound O=C1CCCCC(=O)OCCCCCCO1 RNQBCZCPNUHWLV-UHFFFAOYSA-N 0.000 description 1
- HDNIDWXLYXGKBI-UHFFFAOYSA-N 6-(2,2-dimethylpropoxy)-6-oxohexanoic acid Chemical compound CC(C)(C)COC(=O)CCCCC(O)=O HDNIDWXLYXGKBI-UHFFFAOYSA-N 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- KORSJDCBLAPZEQ-UHFFFAOYSA-N dicyclohexylmethane-4,4'-diisocyanate Chemical compound C1CC(N=C=O)CCC1CC1CCC(N=C=O)CC1 KORSJDCBLAPZEQ-UHFFFAOYSA-N 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000013008 moisture curing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/06—Polyurethanes from polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、湿気硬化性ウレタン樹脂系接着剤及びそれを
使用する接着方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a moisture-curable urethane resin adhesive and an adhesive method using the same.
（従来の技術）
接着剤は、各種の物品の接着に広く用いられている０例
えば、外観美麗な合成樹脂製の板等を複合パネル用の表
面材として、これを合成樹脂製、金属製、木材製の裏面
材に接着して複合パネルを製造する場合、接着剤として
は、従来、クロロプレン溶剤型接着剤、エポキシ系２液
反応型接着剤、ウレタン系２液反応溶剤型接着剤が用い
られている。(Prior art) Adhesives are widely used for bonding various articles. For example, a synthetic resin board with a beautiful appearance is used as a surface material for a composite panel, and this is used to bond a synthetic resin, metal, etc. When manufacturing a composite panel by adhering to a wood backing material, conventionally, the adhesive used is a chloroprene solvent adhesive, an epoxy two-component reactive adhesive, or a urethane two-component reactive solvent adhesive. ing.
ところが、クロロプレン溶剤型接着剤は、−般に耐熱性
が不充分であり、また、表面材又は裏面材に可塑剤や油
分を含む合成樹脂板を使用した場合、可塑剤や油分の影
響で接着不良となる欠点がある。However, chloroprene solvent-based adhesives generally have insufficient heat resistance, and when synthetic resin plates containing plasticizers or oils are used as the front or backing material, adhesiveness may be impaired due to the effects of the plasticizers or oils. There is a drawback that it becomes defective.
また、エポキシ系２液反応型接着剤の場合は、反応前の
接着性が極めて小さいため、例えば表面材に反りがある
場合、裏面材に圧着した直後に浮きが生じ易いので、圧
締時間を長くしなければならないとい′う欠点がある。In addition, in the case of epoxy-based two-component reactive adhesives, the adhesion before reaction is extremely low. For example, if the surface material is warped, it tends to lift immediately after being pressed to the back material, so the pressing time is The disadvantage is that it has to be long.
また、ウレタン系２液反応溶剤型接着剤の場合は、比較
的反応前の接着性が大きいが、２液温合の煩わしさや、
混合後の残液が硬化してしまい翌日使用できなくなる欠
点がある。In addition, in the case of urethane-based two-component reactive solvent-based adhesives, the adhesion before reaction is relatively high, but the trouble of heating the two components,
There is a drawback that the residual liquid after mixing hardens and cannot be used the next day.
（発明が解決しようとする課題）
本発明は、上記従来の問題を解決するものであって、そ
の目的とするところは、初期接着性などの接着性及び耐
熱性に優れ、しかも２液温合の必要がなく、取扱い作業
性の良好な接着剤及びそれを使用する接着方法を提供す
ることにある。(Problems to be Solved by the Invention) The present invention is intended to solve the above-mentioned conventional problems, and its purpose is to have excellent adhesive properties such as initial adhesive properties and heat resistance, and to achieve high temperature resistance of two liquids. It is an object of the present invention to provide an adhesive that does not require the use of adhesives and has good handling workability, and a bonding method using the same.
（課題を解決するための手段）
本発明の接着剤は、ジイソシアネート成分２５〜３５重
量％と多官能ポリオール成分２〜５重置％とポリエステ
ルジオール成分６０〜７３重量％とを含有し、末端にイ
ソシアネート基を有し、数平均分子量が３０００〜１０
０００の湿気硬化性ウレタン樹脂の溶液からなる。(Means for Solving the Problems) The adhesive of the present invention contains 25 to 35% by weight of a diisocyanate component, 2 to 5% by weight of a polyfunctional polyol component, and 60 to 73% by weight of a polyester diol component. Has an isocyanate group and has a number average molecular weight of 3000 to 10
000 moisture-curing urethane resin solution.
また、本発明の接着方法は、上記の接着剤を２個の被着
材の双方に塗布し、溶剤を揮発させた後、上記被着材の
塗布面同志を接触させ圧着することからなる。以上の構
成により上記の目的が達成される。Further, the bonding method of the present invention includes applying the above-mentioned adhesive to both of the two adherends, volatilizing the solvent, and then bringing the coated surfaces of the adherends into contact with each other and press-bonding them. The above configuration achieves the above object.
本発明の接着剤において、ジイソシアネートとしては、
ＴＤＩ（）リレンジイソシアネー））、ＭＤＩ（ジフェ
ニルメタンジイソシアネート）などの芳香族ジイソシア
ネート、ＨＤＩ（ヘキサメチレンジイソシアネート）な
どの脂肪族ジイソシアネート、水添ＭＤＩ（ジシクロヘ
キシルメタンジイソシアネート）、ＩＰＤＩ（イソホロ
ンジイソシアネート）などの脂環族ジイソシアネートが
好適に用いられる。In the adhesive of the present invention, the diisocyanate includes:
Aromatic diisocyanates such as TDI (lylene diisocyanate) and MDI (diphenylmethane diisocyanate), aliphatic diisocyanates such as HDI (hexamethylene diisocyanate), and fats such as hydrogenated MDI (dicyclohexylmethane diisocyanate) and IPDI (isophorone diisocyanate). Cyclic diisocyanates are preferably used.
これらのジイソシアネートは、樹脂中の成分が２５〜３
５重量％の範囲で含有される。２５重量％以下では、樹
脂の強靭性が不足して、十分なる接着強度が得られない
。３５重量％以上では、強靭性は十分であるが内部凝集
力が高まりすぎて、被着体との親和力が低下し、十分な
る接着強度が得られない。These diisocyanates contain 25 to 3 components in the resin.
It is contained in a range of 5% by weight. If it is less than 25% by weight, the toughness of the resin will be insufficient and sufficient adhesive strength will not be obtained. If it is 35% by weight or more, the toughness is sufficient, but the internal cohesive force becomes too high, the affinity with the adherend decreases, and sufficient adhesive strength cannot be obtained.
また、本発明の接着剤において、多官能ポリオールとは
、３官能以上のポリオールであって、グリセリン、トリ
メチロールプロパンなどが好適に用いられる。Further, in the adhesive of the present invention, the polyfunctional polyol is a trifunctional or higher functional polyol, and glycerin, trimethylolpropane, etc. are preferably used.
これらの多官能ポリオールは、樹脂中の成分が２〜５重
量％の範囲で含有される。５重量％・以上では、樹脂の
硬化速度が早くなり、耐溶剤性、耐熱性、接着強度は向
上するが貯蔵安定性が悪くなる。２重量％以下では、樹
脂の硬化速度が遅くなり、耐溶剤性、耐熱性、接着強度
も低下する。These polyfunctional polyols are contained in the resin in an amount of 2 to 5% by weight. If the amount is 5% by weight or more, the curing speed of the resin becomes faster, and the solvent resistance, heat resistance, and adhesive strength are improved, but the storage stability becomes worse. If it is less than 2% by weight, the curing speed of the resin will be slow, and the solvent resistance, heat resistance, and adhesive strength will also decrease.
また、本発明の接着剤において、ポリエステルジオール
とは、平均分子１３００〜５０００程度の両末端にＯＨ
基を含有するポリエステルが好ましく、ブチレンアジペ
ート、ヘキサメチレンアジペート、ネオペンチルアジペ
ートなどが好適に用いられ、これらの単独ポリエステル
又はこれらの共重合ポリエステル、或いはこれらとポリ
エーテルとの共重合物などが用いられる。In addition, in the adhesive of the present invention, polyester diol has an average molecular weight of about 1300 to 5000 and has OH at both ends.
Polyesters containing groups are preferred, and butylene adipate, hexamethylene adipate, neopentyl adipate, etc. are suitably used, and single polyesters of these, copolyesters of these, or copolymers of these and polyethers are used. .
これらのポリエステルジオールは、樹脂中の成分が６０
〜７３重量％の範囲で含有される。この範囲は、上記の
ジイソシアネートと多官能ポリオールとの成分量に基づ
いて、一般に、自動的に定められる。These polyester diols contain 60% of the components in the resin.
It is contained in a range of 73% by weight. This range is generally automatically determined based on the component amounts of the above-mentioned diisocyanate and polyfunctional polyol.
しかして、本発明の接着剤は、上記の成分からなり、し
かも末端にイソシアネート基を有し、数平均分子量が３
０００〜１００００ 、好ましくは６０００〜９０００
の湿気硬化性ウレタン樹脂の溶液からなる。樹脂の数平
均分子量が３０００以下では、十分な初期接着力が得ら
れず、一方、１００００以上では粘着性が少なくなり、
接着し難（なる。Therefore, the adhesive of the present invention is composed of the above-mentioned components, has an isocyanate group at the end, and has a number average molecular weight of 3.
000-10000, preferably 6000-9000
It consists of a solution of moisture-curable urethane resin. If the number average molecular weight of the resin is less than 3,000, sufficient initial adhesive strength cannot be obtained, while if it is more than 10,000, the tackiness decreases,
Difficult to adhere.
かかる樹脂の溶剤としては、酢酸エチル、メチルエチル
ケトン、トルエン、キシレン、１゜鳳 １−トリクロロ
エタンなどの単独又は混合溶剤が用いられる。As the solvent for this resin, single or mixed solvents such as ethyl acetate, methyl ethyl ketone, toluene, xylene, and 1-trichloroethane are used.
本発明の接着剤は、例えば、前記のようなジイソシアネ
ート２５〜３５重量％と多官能ポリオール２〜５重量％
とポリエステルジオール６０〜７３重量％とを、上記の
ような溶剤に溶解し、これを撹拌下で加熱し、反応させ
ることにより得ることができる。The adhesive of the present invention includes, for example, 25 to 35% by weight of the above diisocyanate and 2 to 5% by weight of a polyfunctional polyol.
It can be obtained by dissolving 60 to 73% by weight of polyester diol in the above-mentioned solvent, heating the solution with stirring, and reacting the solution.
また、ジイソシアネート成分、多官能ポリオール成分、
ポリエステルジオール成分及び数平均分子量が、前記の
範囲を外れる各種の湿気硬化性ウレタン樹脂の溶液を作
る。そして、この樹脂溶液を所定の割合に混合すること
によって；各成分量及び数平均分子量を、前記の範囲内
になるように調製することによっても得ることができる
。In addition, diisocyanate components, polyfunctional polyol components,
Solutions of various moisture-curable urethane resins having polyester diol components and number average molecular weights outside the above ranges are prepared. It can also be obtained by mixing this resin solution in a predetermined ratio; and by adjusting the amounts of each component and number average molecular weight to fall within the above ranges.
かくして得られる本発明の接着剤は、例えば、複合パネ
ルの製造において、複合パネル用の表面材と裏面材との
接着に好適に用いられる。この場合、表面材及び裏面材
としては、合成樹脂板、合成ゴム板、化粧板、合板、木
板、金属板及びこれらの塗装板、或いはこれらの積層板
が用いられる。The adhesive of the present invention thus obtained is suitably used, for example, in the production of a composite panel, for adhering a face material and a back material for the composite panel. In this case, a synthetic resin board, a synthetic rubber board, a decorative board, a plywood board, a wooden board, a metal board, a coated board thereof, or a laminate thereof is used as the front surface material and the back surface material.
そして、本発明の接着剤を、表面材と裏面材との双方に
塗布する。塗布法としては、エアースプレー法、エアー
レススプレー法などの吹付ケ法、カーテンフローコータ
ー法、ロールコータ−法、ナイフコーター法等が採用さ
れる。Then, the adhesive of the present invention is applied to both the front material and the back material. As the coating method, a spraying method such as an air spray method or an airless spray method, a curtain flow coater method, a roll coater method, a knife coater method, etc. are employed.
次いで、常温もしくは適宜加熱して溶剤を揮発させた後
、上記表面材と裏面材の塗布面同志を接触させてロール
プレスや平面プレスを用いて圧着する。かくして、表面
材と裏面材とが強固に接着された複合パネルが得られる
。Next, after volatilizing the solvent by heating at room temperature or as appropriate, the coated surfaces of the surface material and the back material are brought into contact with each other and pressed together using a roll press or a plane press. In this way, a composite panel in which the front material and the back material are firmly bonded is obtained.
（作用）
本発明の接着剤は、ジイソシアネート成分２５〜３５重
量％と多官能ポリオール成分２〜５重量％とポリエステ
ルジオール成分６０〜７３重量％とを含有するウレタン
樹脂の溶液からなり、末端にイソシアネート基を有する
。それゆえ、この末端イソシアネート基が、空気中の湿
気及び表面材、裏面材などの被着材の表面に吸着してい
る水分によって、自己橋かけ反応を起して硬化する。し
たがって、接着剤としての耐熱性や凝集力が向上すると
ともに、極性の大きなウレタン結合に由来する強い分子
間力とが相俟って接着力が向上する。(Function) The adhesive of the present invention is made of a solution of a urethane resin containing 25 to 35% by weight of a diisocyanate component, 2 to 5% by weight of a polyfunctional polyol component, and 60 to 73% by weight of a polyester diol component, and has isocyanate at the terminal. It has a group. Therefore, this terminal isocyanate group causes a self-crosslinking reaction and is cured by moisture in the air and moisture adsorbed on the surface of the adherend such as the front material and the back material. Therefore, the heat resistance and cohesive force as an adhesive are improved, and the adhesive force is improved due to the strong intermolecular force derived from the highly polar urethane bonds.
また、上記の湿気硬化性ウレタン樹脂の数平均分子量が
３０００〜１００００とされ、比較的大きく且つ適度に
設定されているので、架橋硬化前でも凝集力が高くなる
。それゆえ、接着剤を被着材に塗布し、塗布面同志を圧
着した際に、架橋硬化前であっても、上記した特定の分
子量に由来する高い凝集力とウレタン結合による強い分
・子間力と末端イソシアネート基による高い反応性とが
相俟って、良好な初期接着力を示す。Moreover, since the number average molecular weight of the above-mentioned moisture-curable urethane resin is set to 3,000 to 10,000, which is relatively large and set appropriately, the cohesive force is high even before crosslinking and curing. Therefore, when an adhesive is applied to an adherend and the coated surfaces are pressed together, even before cross-linking and curing, the high cohesive force derived from the above-mentioned specific molecular weight and the strong inter-molecular bond due to the urethane bond. The combination of strength and high reactivity due to the terminal isocyanate groups provides good initial adhesion.
（実施例） 以下、本発明の実施例及び比較例を示す。(Example) Examples and comparative examples of the present invention are shown below.
尖旌■上
温度計、コンデンサー、撹拌機を備えた４ツロフラスコ
に酢酸エチルを４００ｇＴＤＩ（）リレンジイソシアネ
ート）を３０ｇ仕込み、次いでブチレンアジペート（平
均分子量１０００）を６６ｇ、トリメチロールプロパン
を４ｇ加え、７０″Ｃで５時間反応した。得られたウレ
タン樹脂の溶液は、そのままの状態で本発明の接着剤と
なり、濃度２０重量％、粘度１５０ｃｐｓ 、末端イソ
シアネート０．９重量％を有し、ウレタン樹脂の数平均
分子量は７０００であった。400g of ethyl acetate and 30g of TDI (lylene diisocyanate) were placed in a 4-hour flask equipped with a thermometer, a condenser, and a stirrer, and then 66g of butylene adipate (average molecular weight 1000) and 4g of trimethylolpropane were added to a 70" The resulting urethane resin solution was used as the adhesive of the present invention as it was, and had a concentration of 20% by weight, a viscosity of 150 cps, a terminal isocyanate content of 0.9% by weight, and a number of urethane resins. The average molecular weight was 7,000.
この接着剤を、表面材の塗装鋼板（厚さ約０．８ｍｍ）
の裏面と、裏面材のパーチクルボード（厚さ約Ｌｏｗ）
の双方にエアースプレー法によって約１５０μの厚さに
塗布し、８０°Ｃで３分間乾燥した。その後、接着剤の
塗布面同志を、常温で線圧２ｋｇ／ｃｍの条件でロール
プレスを用いて圧着した。Apply this adhesive to the painted steel plate (approximately 0.8 mm thick) for the surface material.
The back side and particle board (thickness approx. Low) of the back side material
It was coated on both sides to a thickness of about 150μ by air spraying and dried at 80°C for 3 minutes. Thereafter, the surfaces coated with the adhesive were pressed together using a roll press at room temperature and at a linear pressure of 2 kg/cm.
塗装鋼板は当初、周縁部にわずかな反りがあったが、ロ
ールプレスの圧着後はパーチクルボードに良く接着して
反りは全く認められなかった。その後、常温にて約２４
時間放置後、２０°Ｃ及び８０℃における９０度方向の
剥離強度を測定した。Initially, the painted steel plate had a slight warp on its periphery, but after being crimped with a roll press, it adhered well to the particle board and no warping was observed at all. After that, at room temperature for about 24 hours
After standing for a period of time, the peel strength in the 90 degree direction at 20°C and 80°C was measured.
その結果を第１表に示す。The results are shown in Table 1.
また、上記の接着剤を、表面材の可塑剤を５０％含む軟
質塩化ビニルシート（Ｈさ約２ｍｍ）と、裏面材の木質
合板（厚さ約５ｍｍ）の双方にエアースプレー法によっ
て約１５０μの厚さに塗布し、８０°Ｃで３分間乾燥し
た。その後、接着剤の塗布面同志を、常温で線圧２ ｋ
ｇ ／ ｃｍの条件でロールプレスを用いて圧着した。In addition, the above adhesive was applied to both a soft vinyl chloride sheet (H approximately 2 mm) containing 50% plasticizer for the surface material and a wood plywood sheet (approximately 5 mm thick) for the back surface material in a layer of approximately 150μ by air spraying. It was applied to a thick layer and dried at 80°C for 3 minutes. After that, apply a linear pressure of 2 k to the surfaces coated with adhesive at room temperature.
It was crimped using a roll press under the condition of g/cm.
軟質塩化ビニルシートは当初、周縁部にわずかな反りが
あったが、ロールプレスの圧着後は木質合板に良く接着
して反りは全く認められなかった。その直後と常温にて
約２４時間および７日間放置後、２０°Ｃにおける９０
度方向の剥離強度。Initially, the soft vinyl chloride sheet had a slight warp on its peripheral edge, but after being crimped with a roll press, it adhered well to the wood plywood and no warping was observed at all. Immediately after and after leaving at room temperature for about 24 hours and 7 days, 90°C at 20°C.
Peel strength in degree direction.
を測定した。その結果を第１表に示す。was measured. The results are shown in Table 1.
尖硲±又 ＴＤＩ（１−リレンジイソシアネート）４０ｇ。Tips ± again 40 g of TDI (1-lylene diisocyanate).
ブチレンアジペート（平均分子ｉｔ ６００） ５５ｇ
、トリメチロールプロパン５ｇを用いること以外は、実
施例１ど同様にしてウレタン樹脂の溶液（Ａ）を得た。Butylene adipate (average molecule it 600) 55g
A urethane resin solution (A) was obtained in the same manner as in Example 1 except that 5 g of trimethylolpropane was used.
この溶液（Ａ）の粘度は５０ｃｐｓ、末端イソシアネー
ト１．２重量％、ウレタン樹脂の数平均分子量は１５０
０であった。The viscosity of this solution (A) is 50 cps, the terminal isocyanate is 1.2% by weight, and the number average molecular weight of the urethane resin is 150.
It was 0.
上記のウレタン樹脂の溶液（Ａ）とは別に、ＴＤＩ（）
リレンジイソシアネート）１５ｇ、ブチレンアジペート
（平均分子量１５００） ８４ｇ、トリメチロールプロ
パン１ｇを用いること以外は、実施例１と同様にしてウ
レタン樹脂の溶液（Ｂ）を得た。この溶液（Ｂ）の粘度
は５００ｃｐｓ、末端イソシアネート０．２５％、ウレ
タン樹脂の数平均分子量は１５０００であった。Apart from the above urethane resin solution (A), TDI ()
A urethane resin solution (B) was obtained in the same manner as in Example 1, except that 15 g of lylene diisocyanate), 84 g of butylene adipate (average molecular weight 1500), and 1 g of trimethylolpropane were used. The viscosity of this solution (B) was 500 cps, the terminal isocyanate content was 0.25%, and the number average molecular weight of the urethane resin was 15,000.
上記のウレタン樹脂の溶液（Ａ）とウレタン樹脂の溶液
（Ｂ）とを、重量比で１＝１の割合で混合して、ＴＤＩ
（）リレンジイソシアネート成分２７．５重量％、ブチ
レンアジペート成分６９゜５重量％、トリメチロールプ
ロパン成分３．０重量％で、粘度２００ｃｐｓ 、末端
イソシアネート０゜７重量％、混合ウレタン樹脂の数平
均分子量が約８３００である本発明の接着剤を得た。The above urethane resin solution (A) and urethane resin solution (B) are mixed in a weight ratio of 1=1, and TDI
() The lylene diisocyanate component is 27.5% by weight, the butylene adipate component is 69.5% by weight, the trimethylolpropane component is 3.0% by weight, the viscosity is 200 cps, the terminal isocyanate is 0.7% by weight, and the number average molecular weight of the mixed urethane resin is An adhesive of the invention having a molecular weight of about 8300 was obtained.
この接着剤を用いること以外は、以後実施例１と同様に
行なった。その結果を第１表及び第２表に示す。Thereafter, the same procedure as in Example 1 was carried out except for using this adhesive. The results are shown in Tables 1 and 2.
尖施汎主
実施例２で得たウレタン樹脂の溶液（Ａ）とウレタン樹
脂の溶液（Ｂ）とを、重量比で３＝１の割合で混合して
、ＴＤＩ （）リレンジイソシアネート成分３３．７５
重量％、ブチレンアジペート成分６２．２５重量％、ト
リメチロールプロパン成分４．０重量％で、粘度１００
ｃｐｓ 、末端イソシアネート０．９重量％、混合ウレ
タン樹脂の数平均分子量が約４９００である本発明の接
着剤を得た。The urethane resin solution (A) obtained in Main Example 2 and the urethane resin solution (B) were mixed at a weight ratio of 3=1 to obtain TDI () lylene diisocyanate component 33.75.
% by weight, butylene adipate component 62.25% by weight, trimethylolpropane component 4.0% by weight, viscosity 100
cps, terminal isocyanate 0.9% by weight, and a mixed urethane resin having a number average molecular weight of about 4900, an adhesive of the present invention was obtained.
この接着剤を用いること以外は、以後実施例１と同様に
行なった。その結果を第１表及び第。Thereafter, the same procedure as in Example 1 was carried out except for using this adhesive. The results are shown in Table 1 and Table 1.
２表に示す。It is shown in Table 2.
北較■土
実施例２で得たウレタン樹脂の溶液（Ａ）を単独で接着
剤として用いること以外は、実施例１と同様に行なった
。その結果を第１表及び第２表に示す。なお、この場合
は、ロールプレスによる圧着後、塗装鋼板及び軟質塩化
ビニルシートの周縁は、いずれも反りによりわずかに浮
き上っていた。Example 1 was carried out in the same manner as in Example 1, except that the urethane resin solution (A) obtained in Example 2 was used alone as an adhesive. The results are shown in Tables 1 and 2. In this case, after crimping with a roll press, the edges of both the painted steel plate and the soft vinyl chloride sheet were slightly raised due to warping.
ル較史叢
実施例２で得たウレタン樹脂の溶液（Ｂ）を単独で接着
剤として用いること以外は、実施例１と同様に行なった
。その結果を第１表及び第２表に示す。なお、この場合
は、ロールプレスによる圧着後、塗装鋼板及び軟質塩化
ビニルシートは、いずれも裏面材と接着せず、簡単に剥
離した。The procedure of Example 1 was repeated except that the urethane resin solution (B) obtained in Example 2 was used alone as an adhesive. The results are shown in Tables 1 and 2. In this case, after pressure bonding using a roll press, neither the coated steel plate nor the soft vinyl chloride sheet adhered to the backing material and were easily peeled off.
止較拠主
クロロプレン系接着剤（ニスダイン２７５５Ｍ−２、積
木化学社製）を接着剤として用いること以外は、実施例
１と同様に行った。その結果を第１表及び第２表に示す
。The same procedure as in Example 1 was carried out except that a chloroprene-based adhesive (Nisudine 2755M-2, manufactured by Miki Kagaku Co., Ltd.) was used as the adhesive. The results are shown in Tables 1 and 2.
（以下余白 ）
第１表（塗装鋼板とパーチクルボードとの接着）第２表
（軟質塩化ビニルシートと木質合板との接着）（発明の
効果）
上述の通り、本発明の接着剤は、特定の成分のウレタン
樹脂の溶液から構成され、末端にイソシアネート基を有
するので１．湿気や水分によって良好に架橋硬化し、耐
熱性及び接着性に優れ、しかも２液温合の煩わしさがな
く、取扱い作業性が良好である。(Margin below) Table 1 (Adhesion between painted steel plate and particle board) Table 2 (Adhesion between soft vinyl chloride sheet and wood plywood) (Effects of the invention) As mentioned above, the adhesive of the present invention has specific components. It is composed of a solution of urethane resin and has an isocyanate group at the end, so 1. It crosslinks and cures well with humidity and water, has excellent heat resistance and adhesive properties, and has no troublesome heating of two components, and has good handling and workability.
また、本発明の接着剤は、上記のウレタン樹脂が特定の
数平均分子量を有するので、特に初期接着性に優れてい
る。それゆえ、かかる接着剤をコンタクト型接着材とし
て使用する本発明の接着方法によれば、被着材が表面材
と裏面材とからなる場合に、これらが多少反り返ってい
ても、圧着により反り返りが解消する。したがって、表
面材と裏面材を長時間に亘って圧締しておく必要がな（
、接着作業を能率よく行なうことができる。Further, the adhesive of the present invention has particularly excellent initial adhesiveness because the above-mentioned urethane resin has a specific number average molecular weight. Therefore, according to the bonding method of the present invention in which such an adhesive is used as a contact type adhesive, when the adherend consists of a front material and a back material, even if these are slightly warped, the warping is prevented by pressure bonding. Eliminate. Therefore, there is no need to press the front and back materials together for a long time (
, adhesive work can be carried out efficiently.
さらに、表面材や裏面材のような被着材に可塑剤や油分
が付着していても、接着不良が生じないという利点を有
し、複合イずネルの製造に好適に利用され得る。Furthermore, it has the advantage that poor adhesion does not occur even if plasticizer or oil adheres to adherends such as the front surface material and the back surface material, and it can be suitably used in the production of composite adhesives.
Claims (1)
リオール成分２〜５重量％とポリエステルジオール成分
６０〜７３重量％とを含有し、末端にイソシアネート基
を有し、数平均分子量が３０００〜１００００の湿気硬
化性ウレタン樹脂の溶液からなる接着剤。 ２、請求項１記載の接着剤を２個の被着材の双方に塗布
し、溶剤を揮発させた後、上記被着材の塗布面同志を接
触させ圧着することを特徴とする接着方法。[Claims] 1. Contains 25 to 35% by weight of a diisocyanate component, 2 to 5% by weight of a polyfunctional polyol component, and 60 to 73% by weight of a polyester diol component, has an isocyanate group at the end, and has a number average molecular weight. An adhesive consisting of a solution of a moisture-curable urethane resin having a molecular weight of 3,000 to 10,000. 2. A bonding method comprising applying the adhesive according to claim 1 to both of the two adherends, volatilizing the solvent, and then bringing the coated surfaces of the adherends into contact with each other and press-bonding them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7265388A JPH01245076A (en) | 1988-03-26 | 1988-03-26 | Adhesive and bonding process using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7265388A JPH01245076A (en) | 1988-03-26 | 1988-03-26 | Adhesive and bonding process using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01245076A true JPH01245076A (en) | 1989-09-29 |
Family
ID=13495556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7265388A Pending JPH01245076A (en) | 1988-03-26 | 1988-03-26 | Adhesive and bonding process using same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01245076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10500729A (en) * | 1994-06-03 | 1998-01-20 | ヘンケル・コマンディットゲゼルシャフト・アウフ・アクチエン | Quick curing polyurethane melt adhesive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5025865A (en) * | 1973-07-13 | 1975-03-18 | ||
| JPS5871948A (en) * | 1981-10-08 | 1983-04-28 | バイエル・アクチエンゲゼルシヤフト | Novel mixture of tertiary nitrogen atom- containing nco prepolymer containing aid and additive and use as adhesive or coating |
-
1988
- 1988-03-26 JP JP7265388A patent/JPH01245076A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5025865A (en) * | 1973-07-13 | 1975-03-18 | ||
| JPS5871948A (en) * | 1981-10-08 | 1983-04-28 | バイエル・アクチエンゲゼルシヤフト | Novel mixture of tertiary nitrogen atom- containing nco prepolymer containing aid and additive and use as adhesive or coating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10500729A (en) * | 1994-06-03 | 1998-01-20 | ヘンケル・コマンディットゲゼルシャフト・アウフ・アクチエン | Quick curing polyurethane melt adhesive |
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