JPS62295968A - Method of prolonging pot life of two-pack urethane paint - Google Patents
Method of prolonging pot life of two-pack urethane paintInfo
- Publication number
- JPS62295968A JPS62295968A JP13811586A JP13811586A JPS62295968A JP S62295968 A JPS62295968 A JP S62295968A JP 13811586 A JP13811586 A JP 13811586A JP 13811586 A JP13811586 A JP 13811586A JP S62295968 A JPS62295968 A JP S62295968A
- Authority
- JP
- Japan
- Prior art keywords
- paint
- pot life
- curing agent
- urethane paint
- acid
- 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
- 239000003973 paint Substances 0.000 title claims abstract description 31
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims abstract description 6
- 239000012948 isocyanate Substances 0.000 claims abstract description 5
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 5
- 150000007524 organic acids Chemical class 0.000 claims description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract description 12
- 239000011248 coating agent Substances 0.000 abstract description 9
- 238000000576 coating method Methods 0.000 abstract description 9
- 239000002253 acid Substances 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract 2
- 239000000126 substance Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 4
- 239000004848 polyfunctional curative Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 235000005985 organic acids Nutrition 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- 150000003077 polyols Chemical class 0.000 description 3
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 description 2
- ACGUYXCXAPNIKK-UHFFFAOYSA-N hexachlorophene Chemical compound OC1=C(Cl)C=C(Cl)C(Cl)=C1CC1=C(O)C(Cl)=CC(Cl)=C1Cl ACGUYXCXAPNIKK-UHFFFAOYSA-N 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 235000019260 propionic acid Nutrition 0.000 description 2
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000951471 Citrus junos Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
（産業上の利用分野）
この発明は、二液型ウレタン塗料のポットライフ（可使
時間）を延長する方法に関するものである。Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) This invention relates to a method for extending the pot life (pot life) of a two-component urethane paint.
（従来の技術）
二液型ウレタン塗料は、多数の水酸基（−０１１）を有
するポリオール成分（以下主剤という）と、多数のイソ
シアネート基（−ＮＧＯ）を有する橋かけ成分（以下硬
化剤という）とを、塗装置前に混合してウレタン結合（
ＯＣＯＮＩ（−）を生じさせて塗膜を形成させるもので
ある。この二液型ウレタン塗料は、低温焼付が可能であ
るため、耐熱温度の低いプラスチックなどに広く応用さ
れている。(Prior art) A two-component urethane paint consists of a polyol component (hereinafter referred to as the main agent) having a large number of hydroxyl groups (-011) and a crosslinking component (hereinafter referred to as a curing agent) having a large number of isocyanate groups (-NGO). , mixed before painting and urethane bonding (
It causes OCONI(-) to form a coating film. This two-component urethane paint can be baked at low temperatures, so it is widely applied to plastics with low heat resistance.
（発明が解決しようとする問題点）
しかし、主剤である上記ポリオールと硬化剤は混合した
時からそれらの間の反応が進行するため、ポットライフ
が短かく、増粘し、最後にはゲル化してしまう。そして
、この増粘した塗料を塗装すると塗膜外観不良（例えば
、ワキ、ユズ肌など）が発生する。また、増粘した塗料
は、主剤と硬化剤の反応により綱目構造となっているた
め、溶剤への溶解性が悪い。よって、溶剤により、粘度
を低下させ、塗装しても、塗膜外観不良（ブッなど）を
起こす可能性が多分にある。従って、現在では、標準粘
度より３秒程度（フォードカップ″４．岩田塗装機工業
株式会社製、粘度計により測定）高くなった塗料は、廃
却されており、その量は、著しく多く、無駄でありまた
廃却に多額の費用を要する。また、ポットライフが短い
ため、何度も調合せざるを得なく、塗装作業性も悪いと
いう多くの問題点があった。(Problems to be solved by the invention) However, since the reaction between the polyol, which is the main ingredient, and the curing agent proceeds from the moment they are mixed, the pot life is short, the viscosity increases, and eventually gelation occurs. It ends up. When this thickened paint is applied, defects in the appearance of the paint film (for example, wrinkles, yuzu skin, etc.) occur. Further, since the thickened paint has a mesh structure due to the reaction between the base agent and the curing agent, it has poor solubility in solvents. Therefore, even if the viscosity is lowered using a solvent and the paint is painted, there is a high possibility that the paint film will have a poor appearance (blurring, etc.). Therefore, at present, paints whose viscosity is about 3 seconds higher than the standard viscosity (as measured by a viscometer manufactured by Ford Cup "4. Iwata Painting Equipment Co., Ltd.) are discarded, and the amount is extremely large and is wasted. Moreover, it requires a large amount of money to dispose of.Furthermore, because the pot life is short, it has to be prepared many times, and there are many problems such as poor painting workability.
以上の様な問題点を改良するため、いろいろと対策が検
討されているが、現在のところ、塗膜性能に悪影響を及
ぼさず、ライング性のある方法は提案されていない。Various countermeasures have been considered in order to improve the above-mentioned problems, but so far no method has been proposed that does not adversely affect the coating film performance and has a lining property.
（問題点を解決するための手段）
この発明は、このような従来の問題点を着目してなされ
たもので、二液型ウレタン塗料を塗装するにあたり、塗
料に硬化剤のイソシアネート固形分に対し３〜１５重量
％の有機酸を添加することを特徴とする。(Means for Solving the Problems) This invention was made by focusing on such conventional problems, and when applying a two-component urethane paint, it is necessary to It is characterized by adding 3 to 15% by weight of an organic acid.
（作 用）
この発明に用いる有機酸は、反応性を低下させるために
添加するので、電離定数が、２５℃で１．３４Ｘ １０
−’ｍｏｌｅ／ １４以上の酸でないと効果が少ない。(Function) Since the organic acid used in this invention is added to reduce reactivity, the ionization constant is 1.34X 10 at 25°C.
-'mole/ If the acid is not 14 or more, the effect will be low.
また、塗膜に有機酸が残存すると、耐温水性、耐湿性及
び耐候性が低下するため、スプレー及び焼付工程で有機
酸が蒸発するように、２５°Ｃで４ ｍｍＨｇ以上の蒸
気圧を有する酸を用いる。このような有機酸のなかでは
特に酢酸（２５℃における電離定数１．７５Ｘ１０−’
ｍｏｌｅ／ ｅ、蒸気圧１５．３ｍｍＨｇ）およびプロ
ピオン酸（２５°Ｃにおける電離定数１．３４ Ｘ １
０−５ｍｏｌｅ／ ｌ、蒸気圧４ｍｍｌ１ｇ）が好まし
い。更に有機酸の添加量はイソシアネート固形分に対し
て３〜１５重世％であるが、３重量％未満では効果が少
なく、１５重量％を越えると塗膜性能（耐水性、耐湿性
など）に悪影響を及ぼす。前記のような性質を有する有
機酸を使用することにより、塗料としての反応性は低下
するが、スプレー及び焼付工程で有Ｎ酸が揮散するため
、塗膜の硬化程度も従来の方法のものと全く同じである
。よって塗膜性能にも悪影響を及ぼさない。In addition, if organic acids remain in the coating film, hot water resistance, moisture resistance, and weather resistance will decrease, so it is necessary to have a vapor pressure of 4 mmHg or more at 25°C so that the organic acids evaporate during the spraying and baking processes. Use acid. Among these organic acids, acetic acid (ionization constant at 25°C: 1.75X10-'
mole/e, vapor pressure 15.3 mmHg) and propionic acid (ionization constant 1.34 × 1 at 25 °C
0-5 mole/l, vapor pressure 4 mm/l g) is preferred. Furthermore, the amount of organic acid added is 3 to 15% by weight based on the solid isocyanate content, but if it is less than 3% by weight, the effect will be small, and if it exceeds 15% by weight, it will affect the coating film performance (water resistance, moisture resistance, etc.). Adversely affect. By using an organic acid with the above-mentioned properties, the reactivity of the paint decreases, but since the N-containing acid evaporates during the spraying and baking processes, the degree of hardening of the paint film is also comparable to that of conventional methods. It's exactly the same. Therefore, it does not adversely affect coating film performance.
（実施例）
以下本発明の詳細を実施例および比較例により具体的に
説明する。(Examples) The details of the present invention will be specifically explained below using Examples and Comparative Examples.
各実施例及び比較例中の「部」は、「重量部」をもって
示す。"Parts" in each Example and Comparative Example are expressed as "parts by weight."
また、各実施例及び比較例における粘度は、酢酸ブチル
で１４秒（フォードカンプ″４／２０°Ｃ）に調整した
。Further, the viscosity in each Example and Comparative Example was adjusted to 14 seconds (Fordkamp's 4/20°C) using butyl acetate.
尚、実施例中、ＮＡＸマイティラックＧＩＩハードナー
とＲ−２３０硬化剤とソフレックス”８０硬化剤がイソ
シアネート成分である。In the examples, NAX Mighty Luck GII hardener, R-230 curing agent, and Soflex "80 curing agent are isocyanate components.
叉膳斑上
１１ＡＸマイテイラ・ツクＧＩ［ホワイト （日本ペイ
ント■製、ポリオール、商品名） １００
部ＮＡＸマイティラックＧＩＩハードナー（日本ペイン
ト■製、商品名、固形分４５重量％）２５部酢酸
０．６部去膳桝叉
Ｒ−２６３ホワイト（日本ビー・ケ梃カルａｌ製、商品
名） １００部Ｒ
−２３０硬化剤（日本ビー・ケミカル■製、商品名、固
形分７５重量％）２５部
酢酸 ０．６部夫侮
±１
ＮＡＸマイティラックＧ−ＩＩホワイト （日本ペイン
ト■製、商品名＞ １００部
ＮＡＸマイティラックＧ−ｎハードナー（日本ペイント
■製、商品名）２５部
プロピオン酸 ０．６部ル
較■土
ＮＡχマイティラックＧ−Ｕホワイト（日本ペイント■
製、商品名） １００部ＮＡ
ＸマイティラフクＧ−ＩＩハードナー（日本ペイント■
製、商品名）２５部
ル教開１
Ｒ−２６３ホワイト（日本ビー・ケミカル側製、商品名
）１００部
Ｒ−２３０硬化剤（日本ビー・ケミカル■製、商品名）
２５部
北較±１
Ｒ−２６３ホワイト（日本ビー・ケミカル■製、商品名
） １００部Ｒ−
２３０硬化剤（日本ビー・ケミカル（構製、商品名）２
５部
ジブチルスズオフテート １部比較桝土
ソフレックス”２００ホワイト（関西ペイント（掬製、
商品名） １００部ソフ
レックス”８０硬化剤（関西ペイント（！＠製。11AX Maiteira Tsuku GI [White (Made by Nippon Paint ■, polyol, product name) 100
Part NAX Mighty Luck GII Hardener (manufactured by Nippon Paint ■, trade name, solid content 45% by weight) 25 parts acetic acid
0.6 parts Kyozen Masashi R-263 White (manufactured by Nippon B-kekal Al, product name) 100 parts R
-230 hardening agent (manufactured by Nippon B Chemical ■, product name, solid content 75% by weight) 25 parts Acetic acid 0.6 parts hardening agent ±1 NAX Mighty Luck G-II White (manufactured by Nippon Paint ■, product name > 100 parts NAX Mighty Luck G-n Hardener (manufactured by Nippon Paint ■, trade name) 25 parts Propionic acid 0.6 parts Soil NAχ Mighty Luck G-U White (Nippon Paint ■
(product name) 100 copies NA
X Mighty Ruffuku G-II Hardener (Nippon Paint■
(manufactured by Nippon Bee Chemical, trade name) 25 parts R-263 White (manufactured by Nippon Bee Chemical, trade name) 100 parts R-230 hardening agent (manufactured by Nippon Bee Chemical, trade name)
25 parts North comparison ±1 R-263 White (manufactured by Nippon B Chemical ■, product name) 100 parts R-
230 hardening agent (Nippon B Chemical (structure, product name) 2
5 parts dibutyltin ophtate 1 part Comparison Masudo Soflex "200 White (Kansai Paint (manufactured by Kiki),
Product name) 100 parts Soflex "80 hardening agent (manufactured by Kansai Paint (!@).
商品名） １２．５
部ジブチルスズオクテート ０．１部上
記実施例１〜５及び比較例１〜４の塗料につき、ポット
ライフの測定結果を第１表に、外観および物性の測定結
果を第２表に夫々示す。Product name) 12.5
Part dibutyltin octate 0.1 part Table 1 shows the pot life measurement results, and Table 2 shows the measurement results of the appearance and physical properties of the paints of Examples 1 to 5 and Comparative Examples 1 to 4.
第１表
＊ 主剤と硬化剤あるいは、主剤と硬化剤と添加剤を混
合し、酢酸ブチルで粘度調整してからの時間。Table 1* Time after mixing the base resin and curing agent, or the base resin, curing agent, and additives, and adjusting the viscosity with butyl acetate.
（発明の効果）
以上説明してきたように、この発明においては、二液型
ウレタン塗料の塗装にあたり、塗料に硬化剤のイソシア
ネート固形分を対し３〜１５重量％の有機酸を添加する
という構成にしたことにより、ｒＨされた塗膜は、従来
の方法により得られた塗膜に優るとも劣らない上に、塗
料のポットライフを延長することができた。また、ポッ
トライフの延長により廃塗料が少なくなるため、２部作
業性が向上し、ランニングコストも節減できるという効
果が得られる。(Effects of the Invention) As explained above, in this invention, when applying a two-component urethane paint, an organic acid is added in an amount of 3 to 15% by weight based on the solid content of isocyanate as a hardening agent. As a result, the rH-treated coating film was not only superior to coating films obtained by conventional methods, but also extended the pot life of the coating material. In addition, the extended pot life reduces the amount of waste paint, resulting in improved two-part workability and reduced running costs.
Claims (1)
化剤のイソシアネート固形分に対し３〜１５重量％の有
機酸を添加することを特徴とする二液型ウレタン塗料の
ポットライフ延長方法。1. A method for extending the pot life of a two-component urethane paint, which comprises adding an organic acid of 3 to 15% by weight based on the solid content of isocyanate as a hardening agent to the paint when applying the two-component urethane paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13811586A JPS62295968A (en) | 1986-06-16 | 1986-06-16 | Method of prolonging pot life of two-pack urethane paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13811586A JPS62295968A (en) | 1986-06-16 | 1986-06-16 | Method of prolonging pot life of two-pack urethane paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62295968A true JPS62295968A (en) | 1987-12-23 |
Family
ID=15214308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13811586A Pending JPS62295968A (en) | 1986-06-16 | 1986-06-16 | Method of prolonging pot life of two-pack urethane paint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62295968A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009504864A (en) * | 2005-08-17 | 2009-02-05 | アクゾ ノーベル コーティングス インターナショナル ビー ヴィ | Coating composition comprising a polyacrylate polyol, a polyester polyol, and an isocyanate functional crosslinker |
-
1986
- 1986-06-16 JP JP13811586A patent/JPS62295968A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009504864A (en) * | 2005-08-17 | 2009-02-05 | アクゾ ノーベル コーティングス インターナショナル ビー ヴィ | Coating composition comprising a polyacrylate polyol, a polyester polyol, and an isocyanate functional crosslinker |
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