JPH01104667A - Hydrophilic paint - Google Patents
Hydrophilic paintInfo
- Publication number
- JPH01104667A JPH01104667A JP26144787A JP26144787A JPH01104667A JP H01104667 A JPH01104667 A JP H01104667A JP 26144787 A JP26144787 A JP 26144787A JP 26144787 A JP26144787 A JP 26144787A JP H01104667 A JPH01104667 A JP H01104667A
- Authority
- JP
- Japan
- Prior art keywords
- hydrophilic
- polymer
- paint
- formula
- hydrophilic paint
- 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 20
- 229920000642 polymer Polymers 0.000 claims abstract description 10
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 abstract description 11
- 238000000576 coating method Methods 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 125000000217 alkyl group Chemical group 0.000 abstract description 3
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 description 2
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 2
- 239000003505 polymerization initiator Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- LPNSCOVIJFIXTJ-UHFFFAOYSA-N 2-methylidenebutanamide Chemical compound CCC(=C)C(N)=O LPNSCOVIJFIXTJ-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、親水性の良好な塗膜を形成することができ
る親水性塗料に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a hydrophilic paint capable of forming a coating film with good hydrophilicity.
この種の親水性塗料は、特に熱交換器の凝縮面等に適用
してその面の水濡れ性を良好にし、これによって熱交換
器性能を向上させるために好ましく使用することができ
る。This type of hydrophilic paint can be particularly preferably applied to the condensing surface of a heat exchanger to improve the water wettability of that surface, thereby improving the performance of the heat exchanger.
〈従来の技術〉
熱交換器の凝縮面に凝縮液の層が厚く付着すると熱交換
性能が低下することが知られており、そのため凝縮面の
親水性すなわち水濡れ性を良好にすることが一般に行な
われている。<Prior art> It is known that heat exchange performance deteriorates when a thick layer of condensate adheres to the condensing surface of a heat exchanger. Therefore, it is common practice to improve the hydrophilicity, that is, water wettability, of the condensing surface. It is being done.
例えば特公昭６０−１３４２９号公報には、アルミニウ
ム材表面を酸系処理液で化成処理したのち、ＳｉＯ２を
含む無機系処理液で化成処理する二段処理でアミニウム
材表面に親水性を付与する方法が記載されている。For example, Japanese Patent Publication No. 60-13429 describes a method of imparting hydrophilicity to the surface of an aluminum material through a two-stage treatment in which the surface of the aluminum material is chemically treated with an acid-based treatment liquid and then chemically treated with an inorganic treatment liquid containing SiO2. is listed.
〈発明が解決しようとする問題点〉
しかしながら上述した方法により付与された親水作用は
温度の低下とともに減少する傾向があるため、低温にな
るほど水濡れ性が悪くなる。<Problems to be Solved by the Invention> However, since the hydrophilic effect imparted by the above-described method tends to decrease as the temperature decreases, the water wettability worsens as the temperature decreases.
ざらに二段処理のため操作が煩雑である他、ｐＨ９液温
２時間等の処理条件の調節が複雑であるといった問題点
を有する。In addition, there are problems in that the operation is complicated because it is a two-stage treatment, and the adjustment of treatment conditions such as pH 9 liquid temperature for 2 hours is complicated.
そこでこの発明は、低温時に親水能力が低下することな
く、しかも塗料として簡便に被処理面に適用して親水性
塗膜を形成することができる親水性塗料を提供すること
を目的としてなされたものである。Therefore, the object of this invention is to provide a hydrophilic paint that does not reduce its hydrophilic ability at low temperatures and can be easily applied as a paint to a surface to be treated to form a hydrophilic coating film. It is.
く問題点を解決するための手段〉
すなわちこの発明の親水性塗料は、下記一般式で表わさ
れるＮ−フルキルアクリルアミド重合体またはＮ、Ｎ−
ジアルキルアクリルアミド手合体の架橋体を主成分とす
ることを特徴とするものである。Means for Solving the Problems> That is, the hydrophilic paint of the present invention is composed of an N-furkylacrylamide polymer represented by the following general formula or an N,N-
It is characterized by containing a crosslinked product of dialkyl acrylamide as a main component.
−Ｒ
Ｒ′
（式中、ＲおよびＲ′は独立して水素または炭素数１〜
３のアルキル基を示す）。-R R' (wherein R and R' are independently hydrogen or carbon number 1 to
3).
上記一般式で表わされるアルキル置換アクリルアミド重
合体においてアルキル基の炭素数を３以下とする理由は
、炭素数が４以上のアルキル基で置換されたアクリルア
ミド重合体は油との親和力が大きくなり、親水性が低減
するためである。The reason why the number of carbon atoms in the alkyl group in the alkyl-substituted acrylamide polymer represented by the above general formula is set to 3 or less is that an acrylamide polymer substituted with an alkyl group having 4 or more carbon atoms has a greater affinity for oil and is hydrophilic. This is because the characteristics are reduced.
この発明の親水性塗料を調製するに際しては、先ずＮ−
アルキルアクリルアミドモノマーまたはＮ、Ｎ−ジアル
キルアクリルアミドモノマーを重合開始剤を用いて常法
により重合させ重合体を１ｑる。次いでこの重合体を架
橋剤とともに水に溶解し、水溶液を得る。かくして得ら
れた水溶液をこの発明の塗料として使用することができ
る。この塗料を用いて被処理面に親水性塗膜を形成させ
るには、−数的な水溶性塗料と同様に塗布あるいは浸漬
等の操作で被処理面に適用したのち乾燥することにより
簡便に形成できる。When preparing the hydrophilic paint of this invention, first, N-
An alkylacrylamide monomer or an N,N-dialkylacrylamide monomer is polymerized by a conventional method using a polymerization initiator to obtain 1 q of a polymer. Next, this polymer is dissolved in water together with a crosslinking agent to obtain an aqueous solution. The aqueous solution thus obtained can be used as the coating material of this invention. In order to form a hydrophilic coating film on the surface to be treated using this paint, it can be easily formed by applying it to the surface to be treated by coating or dipping, and then drying it, in the same way as with water-soluble paints. can.
この発明の親水性塗料による塗膜は、温度が低くなるほ
どその親水性が大きくなる。添付図面のグラフは、Ｎ−
エチルアクリルアミドポリマーおＪ：びＮ、Ｎ−ジメチ
ルアクリルアミドポリマーをそれぞれメチレンビスアク
リルアミドを用いて架橋した架橋体について、吸水量と
温度との関係を示すものである。このグラフから、いず
れの架橋体も低温はど吸水量が増加する傾向があり、水
濡れ性は良好となることがわかる。The lower the temperature, the more hydrophilic the coating film made of the hydrophilic paint of the present invention becomes. The graph in the attached drawing is N-
This figure shows the relationship between water absorption and temperature for crosslinked products obtained by crosslinking ethyl acrylamide polymer and N,N-dimethylacrylamide polymer using methylene bisacrylamide. From this graph, it can be seen that all crosslinked products tend to increase water absorption at low temperatures and have good water wettability.
またこの発明の親水性塗料は非イオン系であることから
、電解質に対してもほとんどその親水性は影響されるこ
となく安定である。ざらに、金属に対する腐食性も全く
ない。Furthermore, since the hydrophilic paint of the present invention is nonionic, its hydrophilicity is hardly affected by electrolytes and is stable. Furthermore, it is not corrosive to metals at all.
〈実施例〉
Ｎ、Ｎ−ジメチルアクリルアミドモノマー５０（Ｊに重
合開始剤として過酸化ベンゾイル１５０ｍｇを加え、１
〜ルエンでｉ ｏｏｍρになるように稀釈したのらこれ
を反応容器に移し、凍結脱気後６０℃で２４時間重合反
応を行なった。反応終了後、反応物をエーテルに注ぎ、
重合体を沈澱させたのちこれを乾燥して粉末とした。<Example> 150 mg of benzoyl peroxide was added as a polymerization initiator to N,N-dimethylacrylamide monomer 50 (J).
After diluting with ~luene to ioomρ, this was transferred to a reaction vessel, and after freezing and degassing, a polymerization reaction was carried out at 60°C for 24 hours. After the reaction is complete, pour the reactant into ether,
After the polymer was precipitated, it was dried to form a powder.
この重合体粉末１００と架橋剤としてメチジ ２ンビス
アクリルアミド５０ｍａとを１ぶの水に溶解してこの発
明の親水性塗料水溶液を調製した。A hydrophilic paint aqueous solution of the present invention was prepared by dissolving this polymer powder 100 and 50 ma of methidi-2-bisacrylamide as a crosslinking agent in 1 cup of water.
かくして得られた塗料水溶液中に熱交換器を浸漬して引
上げ、１６０℃、３０分間吃乾燥て表面に厚さ５〜１０
μｍの親水性塗膜を形成させた。この塗膜と熱交換器金
属表面との密着性は良好であった。The heat exchanger was immersed in the aqueous paint solution obtained in this way, pulled up, and dried at 160°C for 30 minutes to give a surface thickness of 5 to 10 mm.
A hydrophilic coating film of μm was formed. The adhesion between this coating film and the metal surface of the heat exchanger was good.
この発明の塗料による親水性塗膜を表面に形成した熱交
換器は、この塗膜を形成していないものと比べて、熱交
換能力が約２〜５％向上した。A heat exchanger having a hydrophilic coating formed on its surface using the paint of the present invention had a heat exchange capacity improved by about 2 to 5% compared to a heat exchanger not having this coating.
〈発明の効果〉
以上の説明かられかるにうにこの発明の親水性塗料によ
れば、被処理面に親水性塗膜を簡便に形成することがで
きるだけでなく、低温になるほど親水性、すなわち水濡
れ性が人ぎくなるという特性を示す。そのため特に空調
器の凝縮用熱交換器の凝縮面を親水性とする用途に最適
である。<Effects of the Invention> As can be seen from the above explanation, the hydrophilic paint of the present invention not only allows a hydrophilic paint film to be easily formed on the surface to be treated, but also becomes more hydrophilic as the temperature decreases. It exhibits the characteristic that wettability is attractive. Therefore, it is especially suitable for use in making the condensing surface of the condensing heat exchanger of an air conditioner hydrophilic.
添付図面はこの発明の親水性塗料における温度と吸水量
との関係を示すグラフである。The accompanying drawing is a graph showing the relationship between temperature and water absorption in the hydrophilic paint of the present invention.
Claims (1)
ド重合体またはＮ，Ｎ−ジアルキルアクリルアミド重合
体の架橋体を主成分とすることを特徴とする親水性塗料 ▲数式、化学式、表等があります▼ （式中、ＲおよびＲ′は独立して水素または炭素数１〜
３のアルキル基を示す）。[Scope of Claims] 1. A hydrophilic paint characterized by containing as a main component a crosslinked product of an N-alkylacrylamide polymer or a N,N-dialkyl acrylamide polymer represented by the following general formula: ▲Mathematical formula, chemical formula, There are tables etc.▼ (In the formula, R and R' are independently hydrogen or carbon number 1 to
3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26144787A JPH01104667A (en) | 1987-10-16 | 1987-10-16 | Hydrophilic paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26144787A JPH01104667A (en) | 1987-10-16 | 1987-10-16 | Hydrophilic paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01104667A true JPH01104667A (en) | 1989-04-21 |
Family
ID=17362021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26144787A Pending JPH01104667A (en) | 1987-10-16 | 1987-10-16 | Hydrophilic paint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01104667A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009520091A (en) * | 2005-12-20 | 2009-05-21 | ロデイア・ルシエルシユ・エ・テクノロジー | Compositions containing synthetic polymers for treating and / or modifying hard surfaces |
-
1987
- 1987-10-16 JP JP26144787A patent/JPH01104667A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009520091A (en) * | 2005-12-20 | 2009-05-21 | ロデイア・ルシエルシユ・エ・テクノロジー | Compositions containing synthetic polymers for treating and / or modifying hard surfaces |
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