JPS6025470B2 - anti-fog agent - Google Patents
anti-fog agentInfo
- Publication number
- JPS6025470B2 JPS6025470B2 JP48132483A JP13248373A JPS6025470B2 JP S6025470 B2 JPS6025470 B2 JP S6025470B2 JP 48132483 A JP48132483 A JP 48132483A JP 13248373 A JP13248373 A JP 13248373A JP S6025470 B2 JPS6025470 B2 JP S6025470B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- water
- surfactant
- glass
- polyacrylic 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.)
- Expired
Links
Landscapes
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Description
【発明の詳細な説明】
本発明は、特にガラス質表面の結霧による曇りを防止す
るための曇り防止剤に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention particularly relates to an anti-fog agent for preventing fogging caused by fog formation on a glass surface.
一般に、ガラス板等の表面が露点温度以下になると、こ
れに接する空気中の水蒸気はもはやそのままの状態では
存在し得なくなり、前記表面に霧となって付着する。Generally, when the temperature of the surface of a glass plate or the like falls below the dew point temperature, water vapor in the air in contact with the surface can no longer exist in that state and adheres to the surface in the form of mist.
かかる水蒸気の結霧現象は我々の日常生活に種々の支障
を惹き起こすが、特に、例えば自動車或いは電車等にお
いてこの縞霧現象が生ずると、窓ガラスが曇り、運転の
障害となるばかりでなく、時として大きな事故の原因と
なることは良く知られているところである。窓ガラスの
かかる結霧による曇りを防止するため、従来より各種の
提案がなされている。例えば、その一例として、ガラス
板を多層化することにより、或いはガラス板表面に導電
性被膜を設け通電時におけるこの被膜の発熱を利用する
ことにより、ガラス板表面の温度を露点温度以上に保つ
方法があるが、これらの方法は、いずれも製造上の困難
さとコスト高とを伴うため極〈限られた目的に使用され
る場合にのみ利用されるべきものであって、一般的な方
法とはいい難い。一方、ガラス板表面に石けん液、ワセ
リン、流動パラフィン、珪素樹脂、その他種々の界面活
性剤等の綾水性物質の被膜を形成せしめることによりガ
ラス板表面に水滴が凝縮するのを防ぎ曇りを防止する方
法や、これとは逆に、グリセリン、ポリビニールアルコ
ール等の親水性物質をガラス板表面に塗布して防曇用の
被膜を形成し、これに水滴を吸収せしめる方法も提案さ
れている。This fogging phenomenon of water vapor causes various problems in our daily life, but especially when this streaky fog phenomenon occurs in a car or train, for example, it not only fogs up the window glass and makes driving difficult. It is well known that it sometimes causes major accidents. Various proposals have been made to prevent fogging caused by fog on window glass. For example, one method is to maintain the temperature of the glass plate surface above the dew point temperature by making the glass plate multi-layered or by providing a conductive coating on the glass plate surface and utilizing the heat generated by this coating when electricity is applied. However, all of these methods involve manufacturing difficulties and high costs, so they should only be used for extremely limited purposes, and are not common methods. Good and difficult. On the other hand, by forming a film of aqueous substances such as soap liquid, petrolatum, liquid paraffin, silicone resin, and various other surfactants on the glass plate surface, water droplets are prevented from condensing on the glass plate surface, thereby preventing fogging. Contrary to this method, a method has also been proposed in which a hydrophilic substance such as glycerin or polyvinyl alcohol is applied to the surface of a glass plate to form an antifogging film, which absorbs water droplets.
しかしこれらの方法の場合、ガラス板表面に形成される
被膜は単に付着しているに過ぎないため極〈短時間内に
ガラス表面より離脱してしまうか或いは効果が著しく減
退してしまうという致命的な欠点を有しているばかりで
なく、前記液剤の塗布使用時にプリズムに似た光の分散
を伴うため、特に自動車の前面ガラスに夜間塗布した場
合に対向車のライトが分散し舷しく危険であるという欠
点があった。特に、ワセリン或いは流動パラフィン等は
、塗布後ガラス板表面に油特有のべたつき状態を残すた
め、空気中の塵やごみを吸着して汚れ易く、又ガラス板
表面に対する洗浄効果も全くない。本発明は、かかる点
に鑑みてなされたもので、その目的とするところは、安
価、簡便で、かつ長期に亘りガラス質表面の曇りを防止
し得る曇り防止剤を提供することにある。本発明者は、
この目的に従い種々検討の結果、洗剤等の界面活性剤と
ポリアクリル酸(C比CHCOOH)nと水とを必須成
分とする曇り防止剤が、ガラス質表面への塗布により、
その汚れ、例えば油膜等の有機物質を溶解して洗浄し得
ると共に前記ガラス質表面に強固に結合した透明な親水
性被膜を形成して、ガラス質表面の縞露による曇りを長
時間に亘つて防止し得ることを知見して本発明に至った
。However, in the case of these methods, the film formed on the surface of the glass plate is merely attached to the surface of the glass plate, which has the fatal effect of separating from the glass surface within a short period of time or significantly reducing its effectiveness. Not only does it have some disadvantages, but also when it is applied, it causes a prism-like dispersion of light, so when it is applied to the windshield of a car at night, the lights of oncoming cars are scattered, which can be dangerous. There was a drawback. In particular, vaseline, liquid paraffin, and the like leave a sticky state peculiar to oil on the surface of a glass plate after application, so they tend to attract dust and dirt in the air and get dirty, and they also have no cleaning effect on the glass plate surface. The present invention has been made in view of these points, and its purpose is to provide an anti-fogging agent that is inexpensive, simple, and capable of preventing fogging of glass surfaces over a long period of time. The inventor is
As a result of various studies in accordance with this purpose, an anti-fogging agent containing surfactants such as detergents, polyacrylic acid (C ratio CHCOOH)n, and water as essential components was developed by applying it to glass surfaces.
The dirt, for example, organic substances such as oil film, can be dissolved and cleaned, and a transparent hydrophilic film is formed that is firmly bonded to the glass surface, and the cloudiness caused by striped dew on the glass surface can be prevented for a long time. The present invention was made based on the discovery that this can be prevented.
すなわち本発明は、0.1〜4の重量%のポリアクリル
酸(CQCHOOH)nと、1.0〜6血重量%の界面
活性剤と、98.2重量%以下の水とを含有することを
特徴とする曇り防止剤である。That is, the present invention contains 0.1 to 4% by weight of polyacrylic acid (CQCHOOH), 1.0 to 6% by weight of a surfactant, and 98.2% by weight or less of water. It is an anti-fog agent characterized by:
本発明の曇り防止剤に含有されるポリアクリル酸(CQ
CHCOOH)nは、分子量25000〜250000
のすなわちnが350〜3500のもので、曇り防止剤
中に0.1〜4の重量%を配合する。Polyacrylic acid (CQ) contained in the antifogging agent of the present invention
CHCOOH)n has a molecular weight of 25,000 to 250,000
That is, n is 350 to 3,500, and 0.1 to 4% by weight is blended into the antifogging agent.
このポリアクリル酸が0.1重量%未満では防雲性を長
期に維持することができなくなり、4の重量%超では曇
り防止剤をガラス面に均一に塗布することが困難となり
、塗布被膜の透明性が悪くなったり、この塗布被膜およ
びガラス面を通して見える物像に歪や曲りや虹様の着色
が生ずる。また、このポリアクリル酸の分子量が250
0氏未満では防雲効果の持続性が悪くなり、25000
0を超えると透明度が低下してガラス質表面を通して観
察される物像に歪や曲りが生じ正視し難くなる。本発明
の界面活性剤としては、ドデシルベンゼンスルホン酸ナ
トリウム(C,2日25C6日4S03Na)および硫
酸化油(ヒマシ油、オリーブ油、、ナタネ油等を硫酸化
したもので、別称。If this polyacrylic acid is less than 0.1% by weight, it will not be possible to maintain cloud-proof properties for a long time, and if it exceeds 4% by weight, it will be difficult to uniformly apply the antifogging agent to the glass surface, and the coating film will deteriorate. Transparency deteriorates, and images of objects seen through the applied film and glass surface become distorted, curved, or rainbow-like colored. Moreover, the molecular weight of this polyacrylic acid is 250
If it is less than 0 degrees, the cloud prevention effect will not last as long as 25,000 degrees.
If it exceeds 0, the transparency decreases and the object image observed through the glassy surface becomes distorted or curved, making it difficult to see straight. The surfactants of the present invention include sodium dodecylbenzenesulfonate (C, 2days25C6days4S03Na) and sulfated oils (sulfated castor oil, olive oil, rapeseed oil, etc.).
ート油として市販されている)等や、アルコノツクス(
商品名、米国ALCONOX社製、主成分ドデシルベン
ゼンスルホン酸ナリウム)ならびにラィポンF(ライオ
ン油脂株式会社製)、ワンダフルK(花王石鹸株式会社
製)、ネオベレックス(花王石鹸株式会社製)、オミロ
ン(ミヨシ油脂株式会社製)、ネオゲン(第一工業製薬
会社製)およびニツサンニューレツクス(日本油脂株式
会社製)等の商品名で市販されている家庭用洗剤等を使
用することができる。界面活性剤は曇り防止剤中に1.
0〜60重量%含有される。この界面活性剤が1.の重
量%未満では塗布時の塗布面洗浄力が不十分になるとと
もに塗布被膜の密着性が悪くなり良好な防雲被膜を長期
に維持することができない。一方、界面活性剤が6の重
量%超の場合、塗布被膜の透明度が悪くなる。この界面
活性剤は、通常、2.0〜60重量%の水溶液として1
種または2種以上を混合して用いる。上記界面活性剤の
うちでは、アルコノックスがポリアクリル酸との親和性
が良くかつ曇り防止剤のガラス面に対する密着性が優れ
ている等の理由により最も好ましい。界面活性剤として
硫酸イQ軸のみを含有する曇り防止剤は、透明性にやや
難があるが、この硫酸化油と他の界面活性剤とを併用す
ることにより、透明性の問題を解消することができると
ともに密着性および分散性の向上を図ることができる。
これらのアルコノツクスや硫酸化油以外の界面活性剤を
用いた曇り防止剤は用いる界面活性剤の種類に応じて例
えば塗布時の洗浄性がやや劣る等の難点がある。しかし
、いずれの界面活性剤を用いるにしても、これらの界面
活性剤またはポリアクリル酸を単独もしくは水に溶解し
て塗布する場合に較べれば、透明性および防曇維持性等
の総合性能は格段に優れている。本発明の曇り防止剤は
、聡.虫重量%以下の水を含有する。もちろんこの水に
は、界面活性剤を水溶液として用いる場合の水分も含ま
れる。この曇り防止剤は、製品自体としては必ずしも水
分を必要としないが、塗布膜を薄くかつ均一に形成する
ため、および塗布時ガラス質表面を洗浄するために15
重量%以上の水分を含有せしめることが好ましい。した
がって、製品中に予め水分を含有させることが、実用的
である。また、界面活性剤を水溶液として用いる等、ポ
リアクリル酸と界面活性剤との混合時も水分が存在する
方が作業が容易であり、より均一に混合することができ
る。また、本発明にあっては、必要に応じてガラス質表
面に対する曇り防止液剤の密着性及び被膜形成能力を高
めるためにカルボキシメチルセルロースナトリウム(R
cell−OCH2COONa)を徴量、例えば曇り防
止剤に対して0.01〜0.1重量%添加するのが好ま
しい。(commercially available as oil), Alconotx (commercially available as
Product name: manufactured by ALCONOX in the United States, main ingredient: sodium dodecylbenzenesulfonate), Lypon F (manufactured by Lion Oil Co., Ltd.), Wonderful K (manufactured by Kao Soap Co., Ltd.), Neoberex (manufactured by Kao Soap Co., Ltd.), Omilon (Miyoshi Oil Co., Ltd.) Household detergents commercially available under trade names such as Neogen (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), Neogen (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and Nitsusan Neurex (manufactured by Nippon Oil & Fats Co., Ltd.) can be used. The surfactant is included in the anti-fogging agent.
It is contained in an amount of 0 to 60% by weight. This surfactant is 1. If the amount is less than 2% by weight, the cleaning power of the coated surface during coating will be insufficient, and the adhesion of the coated film will deteriorate, making it impossible to maintain a good cloud-proofing film for a long period of time. On the other hand, if the amount of surfactant exceeds 6% by weight, the transparency of the applied film will deteriorate. This surfactant is usually used as a 2.0 to 60% by weight aqueous solution.
Use a species or a mixture of two or more species. Among the above-mentioned surfactants, Alconox is the most preferred because it has good affinity with polyacrylic acid and excellent adhesion of the antifogging agent to the glass surface. Anti-fogging agents containing only sulfuric acid Q-axis as a surfactant have some difficulty in transparency, but by using this sulfated oil in combination with other surfactants, the problem of transparency can be resolved. It is possible to improve adhesion and dispersibility.
Anti-fogging agents using surfactants other than alconoxes and sulfated oils have drawbacks, such as slightly inferior cleaning properties during application, depending on the type of surfactant used. However, no matter which surfactant is used, the overall performance, such as transparency and anti-fogging properties, is much better than when these surfactants or polyacrylic acid are applied alone or dissolved in water. Excellent. The anti-fogging agent of the present invention is produced by Satoshi. Contains water less than % insect weight. Of course, this water also includes water when the surfactant is used as an aqueous solution. This anti-fogging agent does not necessarily require moisture as a product itself, but it is used to form a thin and uniform coating film and to clean the glass surface during coating.
It is preferable to contain water in an amount of % by weight or more. Therefore, it is practical to include moisture in the product in advance. Further, when the polyacrylic acid and the surfactant are mixed, for example, when the surfactant is used as an aqueous solution, the presence of water makes the work easier and enables more uniform mixing. In addition, in the present invention, carboxymethyl cellulose sodium (R
It is preferable to add cell-OCH2COONa) in an amount, for example, 0.01 to 0.1% by weight based on the antifogging agent.
かくして得られた曇り防止剤は、製品自体が水分を含ん
でいればそのまま或いは適宜の水を加え、また、製品自
体に水分を含んでいない場合は適宜の水、好ましくは1
5〜85重量%の水を加えたものをガラス質表面に滴下
し、或いは布に含浸させて塗布した後乾いた布で拭いて
ガラス質表面の油成分又はその他の有機質分の汚れを取
除くと共に透明な親水性被膜を形成してガラス質表面の
曇りを防止するものである。The anti-fogging agent thus obtained can be used as is or with the addition of appropriate water if the product itself contains water, or with appropriate water, preferably 1 ml, if the product itself does not contain water.
Drop a mixture of 5 to 85% water on the glass surface, or apply it by impregnating it on a cloth, and then wipe with a dry cloth to remove oil components or other organic stains from the glass surface. At the same time, it forms a transparent hydrophilic film to prevent clouding of the glassy surface.
以下、実施例に基づき本発明を具体的に説明する。Hereinafter, the present invention will be specifically explained based on Examples.
実施例 1
■ ポリアクリル酸(分子量80000)4の重量%■
界面活性剤(アルコノックス) 6の重量%の混合液
を水にぬらした布に含浸させガラス板の表面に塗った後
、乾いた布で更に拭き、空気中へ放置した状態でガラス
板表面の曇り防止効果を評価した。Example 1 ■ Weight % of polyacrylic acid (molecular weight 80,000) 4■
Surfactant (Alconox) After impregnating a cloth wet with water with a mixture of 6% by weight and applying it to the surface of the glass plate, wipe it again with a dry cloth and leave it in the air to coat the surface of the glass plate. The anti-fogging effect was evaluated.
評価方法は呼気法により行ない10の×10肌の正方形
のガラスに息を吹き付け、肉眼で見てまったく曇りを生
じないものを優、ほとんど曇りを生じないものを良、曇
りを生じるものを不可とする3段階の評価を経時に亘つ
て室温(18〜2500)で行なった。結果を以下に示
す。塗布直後 優2独特
間後 優4競馬間後
優12脚時間後
顔24加持間後更に水洗
良実施例 2■ ポリアクリル酸
(分子量80000)2匹重量%■界面活性剤(アルコ
ノツクス) 1.亀重量%(2%水溶液使用)■ 水
78.4重量%(アルコノ
ックス水溶液中含有分)からなる曇り防止剤を調整して
実施例1に準じて曇り度を評価した。The evaluation method was to use the exhalation method and blow on a 10 x 10 skin square glass, and when seen with the naked eye, no clouding at all was considered good, almost no clouding was good, and clouding was poor. A three-stage evaluation was carried out over time at room temperature (18 to 2,500 ℃). The results are shown below. Immediately after application After Yu2 unique period After Yu4 horse racing period
After 12 hours
Wash your face with water after 24 hours.
Good example 2 ■ Polyacrylic acid (molecular weight 80,000) 2 weight% ■ Surfactant (Alconox) 1. Tortoise weight% (using 2% aqueous solution) ■ Water
An antifogging agent consisting of 78.4% by weight (content in Alconox aqueous solution) was prepared and the degree of haze was evaluated according to Example 1.
結果を以下に示す。塗布直後
優2畑寺間後 磯
4棚時間後 援12斑時
間後 優24餌時間後
更に水洗 長実施例 3■ ポ
リアクリル酸(分子量80000)2.の重量%■ 界
面活性剤(アルコノツクス)0.75重量%(5%水溶
液使用)■ 界面活性剤(ドデシルベンゼンスルホン酸
ナトリウム) 1.の重量%■
界面活性剤(日本油脂株式会社製ロート油)
3.値重量%■ 水
93.25重量%(アルコノックス
水溶液中含有分を含む)
からなる曇り防止剤を調整し、この曇り防止剤をガラス
表面に滴下してから乾いた布でガラス表面に均等になる
ように拭き、空気中へ放置した状態で実施例1と同様の
呼吸法を用いて曇り度を評価した。The results are shown below. Immediately after application
Yu 2 after Hataterama, 4 hours on the shore, 12 hours after feeding, and further washing with water after 24 feeding hours Long example 3 ■ Polyacrylic acid (molecular weight 80,000) 2. Weight% ■ Surfactant (Alconox) 0.75% by weight (using 5% aqueous solution) ■ Surfactant (sodium dodecylbenzenesulfonate) 1. Weight% of ■
Surfactant (Nippon Oil & Fats Co., Ltd. funnel oil)
3. Value weight% ■ Water
Prepare an anti-fog agent consisting of 93.25% by weight (including the content in the Alconox aqueous solution), drop this anti-fog agent on the glass surface, wipe it evenly on the glass surface with a dry cloth, The degree of haze was evaluated using the same breathing method as in Example 1 while the sample was left in the air.
結果を以下に示す。塗布直後
優2独時間後 優
4錨時間後 優12独時
間後 優24の時間後
優48畑時間後更に
水洗 良実施例 4■ ポリア
クリル酸 2の重量%■ 界面活性剤(
アルコノツクス)0.75重量%(5%水溶液使用)■
界面活性剤(ドデシルベンゼンスルホン酸ナトリウム
) 1.の重量%■ 界面活性
剤(日本油脂株式会社製ロート油)
0.5重量%■ カルボキシルメチルセ
ルロースソーダ0.1重量%
■ 水 95.65重量%
(アルコノックス水溶液中含有分を含む)
からなる曇り防止剤を調整して実施例1に準じて曇り度
を評価した。The results are shown below. Immediately after application
After Yu2 German time After Yu4 Anchor time After Yu12 German time After Yu24 time
Excellent: Rinse with water after 48 hours in the field Good example 4 ■ Weight % of polyacrylic acid 2 ■ Surfactant (
Alconox) 0.75% by weight (using 5% aqueous solution) ■
Surfactant (sodium dodecylbenzenesulfonate) 1. Weight% of ■ Surfactant (Nippon Oil & Fats Co., Ltd. funnel oil)
0.5% by weight ■ Carboxyl methyl cellulose soda 0.1% by weight ■ Water 95.65% by weight
(Including the content in the Alconox aqueous solution) An antifogging agent consisting of the following was prepared and the degree of haze was evaluated according to Example 1.
結果を以下に示す。塗布直後
優2岬時間後 優
4斑時間後 度12畑時
間後 優24凪時間後
暖48凪時間後更に
水洗 良実施例 2一2〜2一
6上記実施例2において、界面活性剤として、それぞれ
オミロン(実施例2一2)、ニッサンニューレックス(
実施例2一3)、ラィポンF(実施例2一4)、ネオベ
レツクス(実施例2一5)およびネオゲン(実施例2−
6)を用いた他は上記実施例2と同様にして曇り度を評
価した。The results are shown below. Immediately after application
After the 2nd cape hour After the 4th spot hour After the 12th field hour After the 24th calm hour
Further washing with water after 48 hours of warm and calm Good Examples 2-2-2-6 In Example 2 above, Omilon (Example 2-2) and Nissan Newrex (Example 2-2) were used as surfactants.
Examples 2-3), Rypon F (Examples 2-4), Neoverex (Examples 2-5) and Neogen (Examples 2-5)
The degree of haze was evaluated in the same manner as in Example 2 above, except that 6) was used.
結果を下表に示す。The results are shown in the table below.
実施例 2−2 2−3 2‐4 2‐5 2−6塗布
直後優 優 優 像 優24時間後 優 懐 優
優 優48時間後 優 懐 優 綾 優1
20時断髪 良 良 優 優 良2
4餌時間後 不可 不可 良 良 不可480
時間後更に水洗 不可 不可
実施例 3−2〜3一6
上記実施例3において、界面活性剤として、それぞれオ
ミロン(実施例3一2)、ニツサンニュ−レックス(実
施例3−3)、ラィポンF(実施例3−4)、ネオベレ
ックス(実施例3−5)およびネオゲン(実施例3一6
)を用いた他は上記実施例3と同様にして曇り度を評価
した。Example 2-2 2-3 2-4 2-5 2-6 Immediately after application Excellent Excellent Image Excellent 24 hours later Excellent Kai Yu
Yu Yu 48 hours later Yu Kai Yu Aya Yu 1
Hair cut at 8pm Good Good Excellent Good 2
After 4 feeding hours Not possible Not possible Good Good Not possible 480
Further washing with water after a period of time Not possible Not possible Examples 3-2 to 3-6 In the above Example 3, Omilon (Example 3-2), Nitsusan Nurex (Example 3-3), and Rypon F ( Examples 3-4), Neoberex (Examples 3-5) and Neogen (Examples 3-6)
) was used, but the haze was evaluated in the same manner as in Example 3 above.
結果を下表に示す。The results are shown in the table below.
実施例 3‐2 3‐3 3‐4 3−5 3−6塗布
直後優 優 濠 優 優24時間後 優 擬 優
便 優48時間後 良 良 倭 優 良1
20時間後 不可 不可 良 良 不可24
0時間後 不可 不可比較例 1
比較のため、実施例1で用いたものと同じポリアクリル
酸を単独で水にぬらした布に含浸させガラス板の表面に
塗った後、乾いた布で更に拭いた。Example 3-2 3-3 3-4 3-5 3-6 Excellent Immediately after application Excellent Moat Excellent 24 hours later Excellent Pseudo-Excellent
Flight Excellent 48 hours later Good Good Wa Excellent 1
After 20 hours Impossible Impossible Good Good Impossible 24
After 0 hours Impossible Impossible Comparative Example 1 For comparison, a wet cloth was impregnated with the same polyacrylic acid used in Example 1, applied to the surface of the glass plate, and then further wiped with a dry cloth. Ta.
この場合、塗布面が一様、平坦かつ均一とならず、肉眼
で観察した場合透明度が低下し或いは物像の歪や曲りが
生じて正視できなかった。比較例 1一2分子量800
00のポリアクリル酸20重量%を水80重量%に熔解
した液を実施例1に準じてガラス板表面に塗布した。In this case, the coated surface was not uniform, flat, and uniform, and when observed with the naked eye, the transparency decreased or the object image was distorted or curved, making it impossible to see straight. Comparative example 1-2 molecular weight 800
A solution obtained by dissolving 20% by weight of polyacrylic acid No. 00 in 80% by weight of water was applied to the surface of a glass plate in accordance with Example 1.
この溶液は、粘度(べたつき)があり、ガラスに塗布し
た場合、透明度が悪く、透過光が乱反射して目に舷しか
った。これは、例えば自動車のフロントガラス等に用い
るには危険な程であった。比較例 2
アルコノックスの2%および5%水溶液をそれぞれにつ
いて実施例3に準じて曇り度を評価した。This solution had viscosity (stickiness) and, when applied to glass, had poor transparency and diffused reflection of transmitted light, making it difficult to see. This was dangerous for use in, for example, automobile windshields. Comparative Example 2 2% and 5% aqueous solutions of Alconox were evaluated for haze according to Example 3, respectively.
結果はいずれも下記の通りであった。塗布直後
良2岬時間後
不可塗布直後更に水洗
不可このように界面活性剤単独では、防曇効果の
持続性がないことがわかる。The results were as follows. Immediately after application
Cape Ryo 2 hours later
Immediately after application, wash with water.
It can be seen that the antifogging effect is not sustainable when the surfactant is used alone.
以上述べたように、ポリアクリル酸
(CQCHOOH)nと界面活性剤と水とを主成分とす
る本発明の曇り防止剤は、ガラス質表面に極めて密着性
のある透明な親水性被膜を形成することができ、塗布被
膜を肉眼検査した結果、透明で何等の着色も認められな
いばかりでなくこの被膜は極めて薄く均一に形成し得る
ためガラス等の透明体に塗布しても何等像の歪みや光の
散乱又は乱反射等による光さも見られず、しかも塗布後
1カ月以上放置しても従来の曇り防止剤のような異質物
の析出による白濁もみられないというすぐれた効果を備
えている。As described above, the antifogging agent of the present invention, which is mainly composed of polyacrylic acid (CQCHOOH), a surfactant, and water, forms a transparent hydrophilic film with extremely adhesive properties on glass surfaces. As a result of visual inspection of the coated film, it was found that it was not only transparent and showed no coloring, but also that it could be formed extremely thin and uniformly, so even if it was applied to a transparent object such as glass, there would be no image distortion or It has an excellent effect in that it does not show any brightness due to scattering or diffused reflection of light, and it does not show any cloudiness due to the precipitation of foreign matter unlike conventional anti-fogging agents even if it is left for more than one month after application.
更に、本発明による曇り防止剤を冬期車両等の窓ガラス
外側に塗布しておくことにより、霜或いは雪の付着を防
止し得る効果もある。なお、本発明による曇り防止剤は
、車両窓ガラスのみならず建物の窓ガラス、鏡、眼鏡レ
ンズ、その他ガラス質表面の曇り防止剤として適用し得
ることはいうまでもない。Further, by applying the anti-fogging agent according to the present invention to the outside of the window glass of a vehicle during winter, there is an effect of preventing the adhesion of frost or snow. It goes without saying that the anti-fogging agent according to the present invention can be applied not only to vehicle window glass, but also to building window glass, mirrors, eyeglass lenses, and other glassy surfaces.
Claims (1)
酸(CH_2CHCOOH)n(n=350〜3500
)0.1〜40重量%と、1.0〜60重量%の界面活
性剤と、98.9重量%以下の水とを必須成分とする曇
り防止剤。1 Polyacrylic acid (CH_2CHCOOH) with a molecular weight of 25,000 to 250,000 (n = 350 to 3,500
) An antifogging agent containing as essential components 0.1 to 40% by weight, 1.0 to 60% by weight of a surfactant, and 98.9% by weight or less of water.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP48132483A JPS6025470B2 (en) | 1973-11-26 | 1973-11-26 | anti-fog agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP48132483A JPS6025470B2 (en) | 1973-11-26 | 1973-11-26 | anti-fog agent |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5081985A JPS5081985A (en) | 1975-07-03 |
JPS6025470B2 true JPS6025470B2 (en) | 1985-06-18 |
Family
ID=15082418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP48132483A Expired JPS6025470B2 (en) | 1973-11-26 | 1973-11-26 | anti-fog agent |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6025470B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5191920A (en) * | 1975-02-12 | 1976-08-12 | Garasutono kumoriboshizai | |
JPS52101680A (en) * | 1976-02-23 | 1977-08-25 | Hoya Lens Co Ltd | Clouddproofing agents for glasses e*t*c* |
JPS55125181A (en) * | 1979-03-22 | 1980-09-26 | Wako Pure Chem Ind Ltd | Antifreezing agent |
JPS56139955A (en) * | 1980-04-03 | 1981-10-31 | Toppan Printing Co Ltd | Anti-dim film |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488215A (en) * | 1968-06-21 | 1970-01-06 | Nat Patent Dev Corp | Nonfogging transparent material |
JPS4919096A (en) * | 1972-06-09 | 1974-02-20 |
-
1973
- 1973-11-26 JP JP48132483A patent/JPS6025470B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488215A (en) * | 1968-06-21 | 1970-01-06 | Nat Patent Dev Corp | Nonfogging transparent material |
JPS4919096A (en) * | 1972-06-09 | 1974-02-20 |
Also Published As
Publication number | Publication date |
---|---|
JPS5081985A (en) | 1975-07-03 |
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