JP2000026761A - Hydrophilic coating material - Google Patents
Hydrophilic coating materialInfo
- Publication number
- JP2000026761A JP2000026761A JP10198630A JP19863098A JP2000026761A JP 2000026761 A JP2000026761 A JP 2000026761A JP 10198630 A JP10198630 A JP 10198630A JP 19863098 A JP19863098 A JP 19863098A JP 2000026761 A JP2000026761 A JP 2000026761A
- Authority
- JP
- Japan
- Prior art keywords
- hydrophilic coating
- water
- lactate
- coating material
- acrylic 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、親水性塗布剤に関
し、更に詳細には、前記塗布剤の塗膜を水で濡らした場
合に、水膜を形成し、垂れ下がる水滴の付着を無くした
親水性塗布剤に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydrophilic coating agent, and more particularly, to a hydrophilic coating agent which forms a water film when a coating film of the coating agent is wetted with water, and prevents the adhesion of dripping water droplets. The present invention relates to a hydrophilic coating agent.
【０００２】[0002]
【従来の技術】例えば、浴室の天井で凝縮した水が水滴
となり落下（ボタ落ち）する場合がある。このような場
合、水滴に当たって入浴者は不快感を味わうことにな
る。したがって従来から、天井に傾斜を付ける、水蒸気
の凝縮が起こりにくいように断熱性を高める、など各種
の対策が従来から行われている。2. Description of the Related Art For example, water condensed on the ceiling of a bathroom may become water droplets and drop (drop). In such a case, the bather will experience discomfort when hit by the water drops. Therefore, various countermeasures have conventionally been taken, such as making the ceiling inclined, and increasing the heat insulation so that condensation of water vapor hardly occurs.
【０００３】[0003]
【発明が解決しようとする課題】ところで、前記のよう
に結露水や飛沫などがプラスチック製品表面に付着し、
水滴となって落下するように問題が起こる場合があり、
しかも製品の性質から傾斜を付けて水滴を流下させるこ
とが困難な場合があり、従来からプラスチック製品、特
にプラスチック製箱体などの天板下側面に水滴が生じな
いようにする試みが従来から行われている。By the way, as described above, dew condensation and splashes adhere to the surface of a plastic product,
There may be problems like falling as water droplets,
In addition, it may be difficult to allow water drops to flow down at an angle due to the nature of the product. Conventionally, attempts have been made to prevent water drops from forming on the lower surface of the top of plastic products, especially plastic boxes. Have been done.
【０００４】例えば、特開昭５５−１３９２５８号公報
に開示された手段は、食器洗い機、風呂場の天板、脱水
機付き洗濯機の蓋などの壁体表面を、平面又は凹凸面と
した面に、エポキシ樹脂、アクリル系樹脂、ボリアミド
樹脂などの親水性樹脂で被覆するものである。また特開
昭５５−１３９２５９号公報に開示された手段は、前記
合成樹脂表面に、タルク、炭酸カルシウム、アスベスト
などの親水性固形粉末を混合した樹脂材料の被覆層を形
成するものである。しかしながら、これらの手段では十
分に水滴のボタ落ちを防止することはできない。For example, a means disclosed in Japanese Patent Application Laid-Open No. 55-139258 discloses a method in which the surface of a wall such as a dishwasher, a top plate of a bathroom, a lid of a washing machine with a dehydrator is made flat or uneven. Is coated with a hydrophilic resin such as an epoxy resin, an acrylic resin, and a polyamide resin. The means disclosed in Japanese Patent Application Laid-Open No. 55-139259 is to form a coating layer of a resin material obtained by mixing a hydrophilic solid powder such as talc, calcium carbonate and asbestos on the surface of the synthetic resin. However, these means cannot sufficiently prevent dripping of water droplets.
【０００５】また特開平３−２６１４３５号公報に開示
された食器洗い機は、天板等にポリプロピレン樹脂を使
用し、前記先行技術とは逆に撥水性として水の付着を防
止するようにしたものである。しかしながら、この先行
技術によっても水滴のボタ落ちを十分に防止することが
できず、なお改善する必要が認められる。本発明は、以
上の問題に着目して成されたものであり、物体に付着し
た水が付着面に水膜を形成し、付着面から重力で垂れ下
がる水滴を作らない塗布面を形成することのできる親水
性塗布剤を提供することを目的としている。The dishwasher disclosed in Japanese Patent Application Laid-Open No. 3-261435 uses a polypropylene resin for a top plate or the like, and has a water repellency to prevent the adhesion of water, contrary to the prior art. is there. However, even with this prior art, dropping of water droplets cannot be sufficiently prevented, and there is a need for further improvement. The present invention has been made in view of the above problems, and is intended to form an application surface on which water adhering to an object forms a water film on the adhering surface and does not form water droplets hanging down by gravity from the adhering surface. It is intended to provide a hydrophilic coating agent that can be used.
【０００６】[0006]
【課題を解決するための手段】以上の目的を達成するた
めの本発明の親水性塗布剤の手段は、界面活性能を有す
るアクリル樹脂系水性エマルジョンに乳酸塩を添加した
ことを特徴とするものである。The means of the present invention for achieving the above object is characterized in that a lactate is added to an acrylic resin-based aqueous emulsion having surface activity. It is.
【０００７】[0007]
【発明の実施の形態】以下、一実施の形態を示して本発
明の親水性塗布剤を具体的に説明する。前記アクリル樹
脂系水性エマルジョンは、界面活性特性を有する水性エ
マルジョンであれば、いずれのものも使用することがで
き、その製法としては、それぞれモノマーのアクリル酸
エステルとメタアクリル酸エステルとを、界面活性剤、
ｐＨ調整剤を添加した脱イオン水中で混合攪拌してプレ
エマルジョンを作成し、該エマルジョンに重合触媒を混
入した液状物を、少量の加熱した水の中に滴下しながら
重合させることにより製造することができる。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the hydrophilic coating composition of the present invention will be specifically described with reference to an embodiment. As the acrylic resin-based aqueous emulsion, any aqueous emulsion having surface active properties can be used, and the production method thereof is as follows. Agent,
A pre-emulsion is prepared by mixing and stirring in deionized water to which a pH adjuster has been added, and a liquid material obtained by mixing a polymerization catalyst in the emulsion is polymerized while being dropped into a small amount of heated water. Can be.
【０００８】使用しうるアクリル酸及びメタクリル酸の
エステルとしては、メチルエステル、エチルエステル、
ブチルエステル、２−エチルヘキシルエステルなどのエ
ステル体を用いることができるが、本発明はこれらのエ
ステルに限定されない。但し、高級エステル化するにつ
れて、得られるアクリル樹脂エマルジョンの粘度が大き
くなるため、塗布が困難となるという問題がある。また
アクリル酸エステルとメタアクリル酸エステルとの共重
合体中の酸基を、アンモニア、アミンなどで塩として水
溶性としたり、低級アルコールでエーテル化して水溶性
とすることもできる。The esters of acrylic acid and methacrylic acid that can be used include methyl esters, ethyl esters,
Ester products such as butyl ester and 2-ethylhexyl ester can be used, but the present invention is not limited to these esters. However, the higher the degree of esterification, the higher the viscosity of the obtained acrylic resin emulsion. The acid group in the copolymer of acrylic acid ester and methacrylic acid ester can be made water-soluble as a salt with ammonia, amine, or the like, or can be made water-soluble by etherification with a lower alcohol.
【０００９】また、前記アクリル酸エステルとメタアク
リル酸エステルとの共重合物に上記以外の変成剤を含有
させることができる外、該共重合物に通常使用される可
塑剤を添加したりすることができる。前記親水性塗布剤
は水に近い粘度に調整可能である。したがって、本発明
の親水性塗布剤の塗布方法は、刷毛塗り、スプレーなど
通常エマルジョンの塗料に使用する塗布方法を適宜用い
ることができる。[0009] In addition to the above-mentioned copolymer of acrylic acid ester and methacrylic acid ester, a modifying agent other than those described above can be contained, and a plasticizer usually used is added to the copolymer. Can be. The hydrophilic coating agent can be adjusted to a viscosity close to that of water. Therefore, as a method of applying the hydrophilic coating agent of the present invention, an application method used for a normal emulsion paint such as brush coating or spraying can be appropriately used.
【００１０】前記乳酸塩は特に限定はない。例えば、乳
酸カルシウムは、容易に入手可能で、無色、且つ化学的
に安定していおり、しかも、完全に前記エマルジョンに
溶解するため、有利に使用することができる。乳酸塩の
添加量には特に限定はないが、１〜１０重量％、好まし
くは３重量％前後の量とすることが一般的であるが、本
発明はこの値に限定されない。[0010] The lactate is not particularly limited. For example, calcium lactate can be advantageously used because it is readily available, colorless and chemically stable, and is completely soluble in the emulsion. The amount of lactate added is not particularly limited, but is generally 1 to 10% by weight, preferably about 3% by weight, but the present invention is not limited to this value.
【００１１】また、前記親水性塗布剤にエタノールを添
加することにより塗布性が向上し、しかもエタノールは
塗膜の乾燥工程で蒸発し、固体成分は均一な膜となり、
水滴のボタ落ち防止効果の持続期間が延長する。添加比
率としては、前記親水性塗布剤に対し１００％エタノー
ルを容量比でほぼ１：１の割合とすることが好ましい
が、本発明はこの値に限定されない。添加するエタノー
ルは、高濃度エタノール、特に無水エタノールを使用す
ることが好ましい。[0011] Further, the coating property is improved by adding ethanol to the hydrophilic coating agent, and the ethanol is evaporated in the drying step of the coating film, and the solid component becomes a uniform film.
The duration of the effect of preventing dripping of water drops is extended. As the addition ratio, it is preferable to make the volume ratio of 100% ethanol to the hydrophilic coating agent approximately 1: 1. However, the present invention is not limited to this value. As the ethanol to be added, it is preferable to use high-concentration ethanol, particularly absolute ethanol.
【００１２】本発明の親水性塗布剤を塗布する対象には
特に限定はなく、例えば樹脂（特にＦＲＰ）板、金属板
などに塗布することができる。The object to which the hydrophilic coating agent of the present invention is applied is not particularly limited. For example, it can be applied to a resin (especially FRP) plate, a metal plate or the like.
【００１３】[0013]
【実施例】以下、実施の形態を示して本発明の親水性塗
布剤を具体的数値を示して説明する。本実施例に使用し
たアクリル樹脂系水性エマルジョン（以下原液という）
は、以下の３種類である。即ち、 実施例１：サンソフトＱ−８１Ｆ（乳化剤、水飴状、太
陽化学株式会社商標名） 実施例２：リケマールＳ−３（界面活性剤、液状、理研
ビタミン株式会社商標名） 実施例３：ＴＯ−８（界面活性剤、液状、理研ビタミン
株式会社商標名） 各実施例の原液１〜３共、それぞれ原液にエタノールを
容量比で１：１の割合で混合したもの（試料Ａ：但し本
発明に含まれない）、原液に３重量％の顆粒状乳酸カル
シウムを混入したもの（試料Ｂ）、及び資料Ｂに無水エ
タノールを容量比で１：１の割合で混合分散させたもの
（試料Ｃ）の３種類の塗布剤として性能試験を行った。EXAMPLES The hydrophilic coating composition of the present invention will be described below with reference to specific embodiments. Acrylic resin-based aqueous emulsion used in this example (hereinafter referred to as undiluted solution)
Are the following three types. That is, Example 1: Sunsoft Q-81F (emulsifier, starch syrup, trade name of Taiyo Chemical Co., Ltd.) Example 2: Riquemar S-3 (surfactant, liquid, trade name of RIKEN VITAMIN CO., LTD.) TO-8 (surfactant, liquid, brand name of Riken Vitamin Co., Ltd.) Each of stock solutions 1 to 3 in each example was prepared by mixing each stock solution with ethanol at a volume ratio of 1: 1 (sample A: (Not included in the invention), a mixture obtained by mixing 3% by weight of granular calcium lactate in a stock solution (sample B), and a mixture prepared by mixing and dispersing anhydrous ethanol in material B at a ratio of 1: 1 by volume (sample C) ) Were tested for performance.
【００１４】使用したテストピースは、ガラス繊維強化
ポリプロピレンのプレス成形体から成るＦＲＰの板（縦
１５cm、横１５cm）に前記試料Ａ、Ｂ、Ｃの各塗布剤を
刷毛塗り後、６０分乾燥させたものを使用した。性能試
験方法は、前記テストピースを６０℃の温水に２秒間浸
漬した後、水面から垂直方向に引出し、テストピースか
ら垂れ下がる水滴の発生状態を目視により検査し、水滴
の垂れ下がりがない平坦な水膜ができた状態を合格とし
た。この検査を不合格となるまで繰り返し、最終合格ま
での繰り返し回数を計数した結果を以下の表１に示す。The test pieces used were obtained by brushing each of the coating materials of Samples A, B, and C on a FRP plate (15 cm in length and 15 cm in width) made of a press-formed body of glass fiber reinforced polypropylene, followed by drying for 60 minutes. Was used. The performance test method is as follows. After immersing the test piece in hot water of 60 ° C. for 2 seconds, the test piece is pulled out from the water surface in a vertical direction, and visually inspects a generation state of a water drop hanging from the test piece. The state in which the test was completed was regarded as pass. This inspection was repeated until the test failed, and the results of counting the number of repetitions until the final pass are shown in Table 1 below.
【００１５】[0015]
【表１】 表 １ サンプル 原液 試料Ａ 試料Ｂ 試料Ｃ 実施例１ 塗布できず ７６回 １００回 ２００回以上 実施例２ ４３回 １２０回 １６０回 ２００回以上 実施例３ ２７回 ８０回 １２０回 ２００回以上Table 1 Table 1 Sample Undiluted solution sample A Sample B Sample C Example 1 Unable to apply 76 times 100 times 200 times or more Example 2 43 times 120 times 160 times 200 times or more Example 3 27 times 80 times 120 times 200 times that's all
【００１６】以上のとおり、本発明の親水性塗布剤（前
記試料Ｂ及びＣ）を塗布したテストピースは顕著な水滴
ボタ落ち防止効果を奏することが確認することができ
た。As described above, it was confirmed that the test pieces coated with the hydrophilic coating agents (samples B and C) of the present invention exhibited a remarkable water drop prevention effect.
【発明の効果】以上説明した本発明の食器洗い機は以下
の効果を奏することができる。即ち、界面活性能を有す
るアクリル樹脂系水性エマルジョンに乳酸塩を添加した
親水性塗布剤は、塗布した物体表面の水に対する濡れ性
を向上させることができ、更にエタノールを添加した親
水性塗布剤は、上記特性を更に向上させることができ
る。The dishwasher of the present invention described above has the following effects. That is, a hydrophilic coating agent obtained by adding a lactate to an acrylic resin-based aqueous emulsion having surface activity can improve the wettability of the applied object surface to water, and a hydrophilic coating agent further added with ethanol is The above characteristics can be further improved.
Claims (4)
エマルジョンに乳酸塩を添加したことを特徴とする親水
性塗布剤。1. A hydrophilic coating agent characterized by adding a lactate salt to an acrylic resin-based aqueous emulsion having surface activity.
ルとメタアクリル酸エステルとの共重合物である請求項
１記載の親水性塗布剤。2. The hydrophilic coating composition according to claim 1, wherein the acrylic resin is a copolymer of an acrylate and a methacrylate.
項１又は２記載の親水性塗布剤。3. The hydrophilic coating composition according to claim 1, wherein the lactate is calcium lactate.
たことを特徴とする請求項１、２又は３記載の親水性塗
布剤。4. The hydrophilic coating composition according to claim 1, wherein ethanol is added to said hydrophilic coating composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10198630A JP2000026761A (en) | 1998-07-14 | 1998-07-14 | Hydrophilic coating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10198630A JP2000026761A (en) | 1998-07-14 | 1998-07-14 | Hydrophilic coating material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000026761A true JP2000026761A (en) | 2000-01-25 |
Family
ID=16394404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10198630A Withdrawn JP2000026761A (en) | 1998-07-14 | 1998-07-14 | Hydrophilic coating material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000026761A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008202827A (en) * | 2007-02-19 | 2008-09-04 | Matsushita Electric Ind Co Ltd | Evaporating filter and humidifying device |
| WO2023067821A1 (en) * | 2021-10-18 | 2023-04-27 | 株式会社サンエイジ | Method for producing iron rust-reducing rustproofing agent |
-
1998
- 1998-07-14 JP JP10198630A patent/JP2000026761A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008202827A (en) * | 2007-02-19 | 2008-09-04 | Matsushita Electric Ind Co Ltd | Evaporating filter and humidifying device |
| WO2023067821A1 (en) * | 2021-10-18 | 2023-04-27 | 株式会社サンエイジ | Method for producing iron rust-reducing rustproofing agent |
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Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050607 |
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