JPH11278870A - Water repelling agent for glass - Google Patents

Water repelling agent for glass

Info

Publication number
JPH11278870A
JPH11278870A JP7988398A JP7988398A JPH11278870A JP H11278870 A JPH11278870 A JP H11278870A JP 7988398 A JP7988398 A JP 7988398A JP 7988398 A JP7988398 A JP 7988398A JP H11278870 A JPH11278870 A JP H11278870A
Authority
JP
Japan
Prior art keywords
glass
component
water
silicone oil
weight
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
Application number
JP7988398A
Other languages
Japanese (ja)
Inventor
Masaru Kawashima
勝 川島
Yasunao Mori
泰直 森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CCI Corp
Original Assignee
CCI Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CCI Corp filed Critical CCI Corp
Priority to JP7988398A priority Critical patent/JPH11278870A/en
Publication of JPH11278870A publication Critical patent/JPH11278870A/en
Pending legal-status Critical Current

Links

Landscapes

  • Surface Treatment Of Glass (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain a water repelling agent excellent in water repellency and durability and requiring no wiping work by incorporating a silicone oil, an acid catalyst and a solvent which dissolves the silicone oil. SOLUTION: The water repelling agent contains (A) 0.1-30 wt.% silicone oil represented by the formula [where R is H, hydroxyl or alkoxy; (n) is O or >=1 and (m) is >=1], (B) 0.01-10 wt.% acid catalyst such as hydrochloric acid or nitric acid and (C) 5-99.9 wt.% solvent which dissolves the component A, e.g. methanol or ethanol. Methyl hydrogen silicone oil contg. H as R in the formula absorbs moisture in air and forms many hydroxyl groups. When the water repelling agent is applied to the surface of glass, the component A is hydrolyzed and H, hydroxyl or alkoxy groups bond to OH groups on the surface of the glass in the presence of the component B.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、例えば自動車のウ
ィンドウやミラーなどに適用されるガラス用撥水処理剤
に関する。詳細には撥水性及び耐久性に優れ、かつガラ
ス面上の余剰撥水成分の拭き取りを必要としないガラス
用撥水処理剤に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water repellent for glass applied to, for example, windows and mirrors of automobiles. More particularly, the present invention relates to a water repellent agent for glass which has excellent water repellency and durability and does not require wiping off excess water repellent components on the glass surface.

【0002】[0002]

【従来の技術及び発明が解決しようとする課題】従来、
ガラス用撥水処理剤としては、例えば撥水成分としてジ
メチルシリコーンオイルを用い、これをエチルアルコー
ルで溶解し、さらにこのアルコール溶液中に酸触媒とし
て硫酸を添加したものがある。この撥水処理剤をガラス
表面に塗布したとき、当該撥水処理剤に含まれる硫酸が
ジメチルシリコーンオイル中のSi−O結合を切り、ジ
メチルシリコーンオイルは、ジメチルシリコーンの硫酸
エステルと、片末端水酸基変性シリコーンとに分解され
る。前記ジメチルシリコーンの硫酸エステルは、ガラス
表面の水酸基と反応して単分子被膜によりなる耐久性に
富む撥水面を形成する。
2. Description of the Related Art
As a water repellent agent for glass, for example, there is a solution obtained by using dimethyl silicone oil as a water repellent component, dissolving it with ethyl alcohol, and further adding sulfuric acid as an acid catalyst to the alcohol solution. When this water-repellent agent is applied to a glass surface, the sulfuric acid contained in the water-repellent agent breaks the Si—O bond in the dimethyl silicone oil, and the dimethyl silicone oil is converted into a sulfate ester of dimethyl silicone and a hydroxyl group at one end. Decomposed into modified silicone. The sulfate ester of dimethyl silicone reacts with the hydroxyl group on the glass surface to form a durable water-repellent surface composed of a monomolecular film.

【0003】一方、片末端水酸基変性シリコーンは殆ど
反応性がないため、残査としてガラス面上に残る。この
片末端水酸基変性シリコーンは白色を呈し、ガラス面の
光透過性(視界)を著しく阻害するため、これを拭き取
って除去する必要がある。
[0003] On the other hand, one end hydroxyl-modified silicone has little reactivity and remains on the glass surface as a residue. This one-terminal hydroxyl group-modified silicone has a white color and significantly impairs the light transmittance (visibility) of the glass surface, so that it is necessary to wipe it off.

【0004】またガラス面上には、未反応のジメチルシ
リコーンオイルや前記硫酸エステルとガラス表面の水酸
基との反応により生じた硫酸も残査として存在している
ので、これらも拭き取りにより除去しなければならなか
った。
On the glass surface, unreacted dimethyl silicone oil and sulfuric acid generated by the reaction between the sulfate ester and the hydroxyl group on the glass surface are also present as residues, and these must be removed by wiping. did not become.

【0005】ところが、前記片末端水酸基変性シリコー
ンや余剰のジメチルシリコーンオイルは、これらを拭き
取ろうとすると、ガラス面上で逃げてしまう(ガラス面
上を他の場所に移動するだけ)ので、何度も拭き取らな
ければ、これらを完全に除去することができず、残査の
拭き取り作業には多くの手間を要していた。
However, the one-terminal hydroxyl-modified silicone and excess dimethylsilicone oil escape on the glass surface when they are wiped off (just move to another place on the glass surface). If they were not wiped, they could not be completely removed, and the work of wiping the residue required much labor.

【0006】本発明は、このような技術的課題に鑑みな
されたものであり、撥水性及び耐久性に優れ、かつ拭き
取り作業を必要としないガラス用撥水処理剤を提供する
ことを目的とするものである。
The present invention has been made in view of such technical problems, and has as its object to provide a water repellent agent for glass which has excellent water repellency and durability and does not require a wiping operation. Things.

【0007】[0007]

【課題を解決するための手段】上記目的を達成するた
め、請求項1記載の発明は、(A)構造式 (ただし、式中Rは水素原子、水酸基、またはアルコキ
シ基であり、nは0または1以上、mは1以上である)
で表されるシリコーンオイルと、(B)酸触媒と、
(C)前記(A)成分を溶解する溶剤とを含有すること
を特徴とするガラス用撥水処理剤をその要旨とした。
Means for Solving the Problems To achieve the above object, the invention according to claim 1 is characterized in that (A) the structural formula (Where R is a hydrogen atom, a hydroxyl group, or an alkoxy group, n is 0 or 1 or more, and m is 1 or more)
And (B) an acid catalyst,
The gist of the present invention is a water repellent agent for glass, which comprises (C) a solvent that dissolves the component (A).

【0008】請求項2記載の発明は、(A)成分を0.
1〜30重量%、(B)成分を0.01〜10重量%
と、前記(C)成分を5〜99.9重量%の範囲で含有
することを特徴とするガラス用撥水処理剤をその要旨と
した。
The invention according to claim 2 is characterized in that the component (A) is contained in 0.1%.
1 to 30% by weight, component (B) 0.01 to 10% by weight
And a water repellent agent for glass characterized by containing the component (C) in a range of 5 to 99.9% by weight.

【0009】[0009]

【発明の実施の形態】本発明のガラス用撥水処理剤にお
いて、(A)成分は撥水成分であり、構造式 で表されるシリコーンオイルである。
BEST MODE FOR CARRYING OUT THE INVENTION In the water-repellent treating agent for glass of the present invention, the component (A) is a water-repellent component and has a structural formula It is a silicone oil represented by

【0010】上記構造式中のRは、水素原子、水酸基、
またはアルコキシ基(メトキシ基またはエトキシ基)で
あり、nは0または1以上、mは1以上である。
R in the above structural formula is a hydrogen atom, a hydroxyl group,
Or an alkoxy group (a methoxy group or an ethoxy group), n is 0 or 1 or more, and m is 1 or more.

【0011】この(A)成分の含有量としては、0.1
〜30重量%の範囲が好ましい。この(A)成分は当該
撥水処理剤をガラス表面に塗布したとき、図1〜図3に
示すように、(A)成分が加水分解して、同(A)成分
中の側鎖のR部分に導入された水素原子、水酸基、また
はアルコキシ基が、前記ガラス面のOH基と反応して強
固に結合し、ガラス面上に耐久性に優れた撥水膜を形成
する。
The content of the component (A) is 0.1
The range is preferably from 30 to 30% by weight. When the water-repellent agent is applied to the glass surface, the component (A) is hydrolyzed as shown in FIGS. 1 to 3 and the R of the side chain in the component (A) is hydrolyzed. The hydrogen atom, hydroxyl group or alkoxy group introduced into the portion reacts with the OH group on the glass surface to form a strong bond, thereby forming a highly durable water-repellent film on the glass surface.

【0012】尚、図2は、R部分に水素を導入したメチ
ルハイドロジェンシリコーンオイルが空気中の湿気(H
2O )を吸収して、側鎖のR部分に数多くの水酸基を導
入した側鎖水酸基変性シリコーンオイルの反応機構を示
しているが、前記構造式に示す側鎖水酸基変性シリコー
ンオイルは、人為的にR部分に水酸基を導入した側鎖水
酸基変性シリコーンオイルであっても良い。また、側鎖
水酸基変性シリコーンオイルは反応性が高く、その殆ど
がガラスと反応する。
FIG. 2 shows that methyl hydrogen silicone oil in which hydrogen has been introduced into the R portion is exposed to moisture (H
The reaction mechanism of a side-chain hydroxyl-modified silicone oil that has absorbed 2 O) and introduced a large number of hydroxyl groups into the R portion of the side chain is shown. And a side chain hydroxyl-modified silicone oil having a hydroxyl group introduced into the R portion. Further, the side chain hydroxyl group-modified silicone oil has high reactivity, and most of it reacts with glass.

【0013】また図1〜3の反応により、シリコーンオ
イルにおいてR部分に導入された水素原子、水酸基、ま
たはアルコキシ基は、それぞれガラス面のOH基から水
素原子を得て、水素、水、またはメタノールやエタノー
ルとして生成され、副生成物となるが、これらはいずれ
も透明である。
According to the reactions shown in FIGS. 1 to 3, the hydrogen atom, hydroxyl group or alkoxy group introduced into the R portion of the silicone oil obtains a hydrogen atom from the OH group on the glass surface, and obtains hydrogen, water or methanol. And ethanol are produced as by-products, all of which are transparent.

【0014】このため、当該撥水処理剤を塗布した後、
ガラス面上に白色の残査は全く存在しないことから、従
来の撥水処理剤のように、塗布後に拭き取る必要が全く
ない。
For this reason, after applying the water repellent agent,
Since there is no white residue on the glass surface, there is no need to wipe it off after application, unlike a conventional water repellent.

【0015】(B)成分は、当該撥水処理剤をガラス表
面に塗布したとき、前記(A)成分が加水分解して、同
(A)成分中の水素原子、水酸基、またはアルコキシ基
が、ガラス面のOH基と反応して強固に結合する際に触
媒として作用するものである。具体的には塩酸、硝酸、
硫酸、芳香族スルホン酸、脂肪族スルホン酸、フッ素化
スルホン酸、脂肪酸、燐酸などの酸、若しくはこれらの
混合物を挙げることができる。酸触媒の含有量として
は、0.01〜10重量%の範囲が好ましい。
When the water-repellent agent is applied to a glass surface, the component (A) is hydrolyzed to form a hydrogen atom, a hydroxyl group or an alkoxy group in the component (A). It acts as a catalyst when it reacts with OH groups on the glass surface to form a strong bond. Specifically, hydrochloric acid, nitric acid,
Acids such as sulfuric acid, aromatic sulfonic acid, aliphatic sulfonic acid, fluorinated sulfonic acid, fatty acid, phosphoric acid, and the like, and mixtures thereof can be given. The content of the acid catalyst is preferably in the range of 0.01 to 10% by weight.

【0016】(C)成分は、前記(A)成分を溶解する
ものであり、具体的にはメタノール、エタノール、n−
プロパノール、イソプロピルアルコールなどのアルコー
ル類、OH基を含有するグリコール系溶剤、酢酸メチル
などのエステル系溶剤、アセトンなどのケトン系溶剤、
トルエン、キシレンなどの芳香族系溶剤などの溶剤を挙
げることができる。中でも安定性の点で好ましいのはア
ルコール類である。この(C)成分の含有量としては、
5〜99.9重量%の範囲が好ましい。
The component (C) dissolves the component (A), and specifically, methanol, ethanol, n-
Alcohols such as propanol and isopropyl alcohol, glycol solvents containing OH groups, ester solvents such as methyl acetate, ketone solvents such as acetone,
Examples of the solvent include aromatic solvents such as toluene and xylene. Among them, alcohols are preferable in terms of stability. As the content of the component (C),
A range of 5 to 99.9% by weight is preferred.

【0017】尚、本発明のガラス用撥水処理剤には、
(B)成分の酸触媒を溶解するため、若干の水を使用す
ることこともできる。
The water-repellent treating agent for glass of the present invention includes:
A small amount of water can be used to dissolve the acid catalyst of the component (B).

【0018】[0018]

【実施例】実施例1 撥水成分として、次式で表されるメチルハイドロジェン
シリコーンオイル(TSF484、東芝シリコーン株式
会社製)を用い、
EXAMPLES Example 1 Methyl hydrogen silicone oil (TSF484, manufactured by Toshiba Silicone Co., Ltd.) represented by the following formula was used as a water-repellent component.

【0019】これをイソプロピルアルコール96.9重
量%に対して3重量%の割合で加えて溶解させた。次い
で、このアルコール溶液中に酸触媒としてメタンスルホ
ン酸0.1重量%を添加し、ガラス用撥水処理剤を作製
した。
This was added and dissolved at a ratio of 3% by weight to 96.9% by weight of isopropyl alcohol. Next, 0.1% by weight of methanesulfonic acid was added as an acid catalyst to this alcohol solution to prepare a water repellent agent for glass.

【0020】実施例2 撥水成分として、次式で表されるメチルハイドロジェン
シリコーンオイル(FZ−3702、日本ユニカー株式
会社製)を用い、
Example 2 A methyl hydrogen silicone oil (FZ-3702, manufactured by Nippon Unicar Co., Ltd.) represented by the following formula was used as a water-repellent component.

【0021】これをエチルアルコール98.45重量%
に対して1.5重量%の割合で加えて溶解させた。次い
で、このアルコール溶液中に酸触媒として硫酸0.05
重量%を添加し、ガラス用撥水処理剤を作製した。
This was mixed with 98.45% by weight of ethyl alcohol.
Was added and dissolved at a ratio of 1.5% by weight. Next, 0.05% sulfuric acid was used as an acid catalyst in this alcohol solution.
By weight, a water repellent agent for glass was prepared.

【0022】実施例3 撥水成分として、次式で表されるアルコキシ変性シリコ
ーンオイル(FZ−3778、日本ユニカー株式会社
製)を用い、
Example 3 An alkoxy-modified silicone oil (FZ-3778, manufactured by Nippon Unicar Co., Ltd.) represented by the following formula was used as a water-repellent component.

【0023】これをエチルアルコール96.9重量%に
対して3重量%の割合で加えて溶解させた。次いで、こ
のアルコール溶液中に酸触媒として硫酸0.1重量%を
添加し、ガラス用撥水処理剤を作製した。
This was added and dissolved at a ratio of 3% by weight to 96.9% by weight of ethyl alcohol. Then, 0.1% by weight of sulfuric acid was added as an acid catalyst to the alcohol solution to prepare a water repellent agent for glass.

【0024】比較例1 撥水成分としてジメチルポリシロキサンを用い、これを
エチルアルコール91.0重量%に対して8重量%の割
合で加えた。次いで、このアルコール溶液中に硫酸1重
量%を添加し、ガラス用撥水処理剤を作製した。
Comparative Example 1 Dimethylpolysiloxane was used as a water-repellent component, and was added at a ratio of 8% by weight to 91.0% by weight of ethyl alcohol. Then, 1% by weight of sulfuric acid was added to this alcohol solution to prepare a water repellent agent for glass.

【0025】比較例2 撥水成分としてCF3(CF27CH2CH2Si(OC
33 を用い、これをイソプロピルアルコール96.
9重量%に対して3重量%の割合で加えた。次いで、こ
のアルコール溶液中に酸触媒として硫酸0.1重量%を
添加し、ガラス用撥水処理剤を作製した。
Comparative Example 2 CF 3 (CF 2 ) 7 CH 2 CH 2 Si (OC
Using H 3) 3, isopropyl alcohol 96 this.
It was added at a ratio of 3% by weight to 9% by weight. Then, 0.1% by weight of sulfuric acid was added as an acid catalyst to the alcohol solution to prepare a water repellent agent for glass.

【0026】上記実施例1〜3、並びに比較例1及び2
の各撥水処理剤を実車に塗布し、塗布後のガラス面の状
態を目視により確認した。その結果を表1に示した。表
1におけるガラスの視界は、良好な場合を○、ややクリ
ヤーさに欠ける場合を△、不良な場合を×として評価し
た。
Examples 1 to 3 and Comparative Examples 1 and 2
Was applied to an actual vehicle, and the state of the glass surface after the application was visually confirmed. The results are shown in Table 1. In Table 1, the visibility of the glass was evaluated as ○ when good, △ when slightly less clear, and x when poor.

【0027】 [0027]

【0028】表1から、実施例1〜3に係る撥水処理剤
を適用したガラス面は、いずれも視界が良好であったの
に対し、比較例1及び2のものは、いずれも視界が不良
であることが確認された。
From Table 1, it can be seen that the glass surfaces to which the water-repellent agents of Examples 1 to 3 were applied had good visibility, whereas those of Comparative Examples 1 and 2 had good visibility. It was confirmed that it was defective.

【0029】[0029]

【発明の効果】本発明のガラス用撥水処理剤にあって
は、(A)構造式 (ただし、式中Rは水素原子、水酸基、またはアルコキ
シ基であり、nは0または1以上、mは1以上である)
で表されるシリコーンオイルと、(B)酸触媒と、
(C)前記(A)成分を溶解する溶剤とを含有すること
から、 撥水性及び耐久性に優れ、かつ拭き取り作業を
必要としない。
According to the water repellent agent for glass of the present invention, (A) the structural formula (Where R is a hydrogen atom, a hydroxyl group, or an alkoxy group, n is 0 or 1 or more, and m is 1 or more)
And (B) an acid catalyst,
(C) Since it contains a solvent that dissolves the component (A), it has excellent water repellency and durability, and does not require a wiping operation.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 図1は、酸触媒存在下におけるメチルハイド
ロジェンシリコーンオイルとガラス面との反応機構を示
した模式図である。
FIG. 1 is a schematic diagram showing a reaction mechanism between a methyl hydrogen silicone oil and a glass surface in the presence of an acid catalyst.

【図2】 図2は、酸触媒存在下における側鎖水酸基変
性シリコーンオイルとガラス面との反応機構を示した模
式図である。
FIG. 2 is a schematic diagram showing a reaction mechanism between a side chain hydroxyl-modified silicone oil and a glass surface in the presence of an acid catalyst.

【図3】 図3は、酸触媒存在下におけるアルコキシ変
性シリコーンオイルとガラス面との反応機構を示した模
式図である。
FIG. 3 is a schematic diagram showing a reaction mechanism between an alkoxy-modified silicone oil and a glass surface in the presence of an acid catalyst.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 (A)構造式 (ただし、式中Rは水素原子、水酸基、またはアルコキ
シ基であり、nは0または1以上、mは1以上である)
で表されるシリコーンオイルと、(B)酸触媒と、
(C)前記(A)成分を溶解する溶剤とを含有すること
を特徴とするガラス用撥水処理剤。
(A) Structural formula (Where R is a hydrogen atom, a hydroxyl group, or an alkoxy group, n is 0 or 1 or more, and m is 1 or more)
And (B) an acid catalyst,
(C) A water-repellent agent for glass, comprising: a solvent that dissolves the component (A).
【請求項2】 前記(A)成分を0.1〜30重量%、
(B)成分を0.01〜10重量%と、前記(C)成分
を5〜99.9重量%の範囲で含有することを特徴とす
る請求項1記載のガラス用撥水処理剤。
2. The composition according to claim 1, wherein the component (A) is 0.1 to 30% by weight,
The water repellent agent for glass according to claim 1, wherein the component (B) is contained in an amount of 0.01 to 10% by weight and the component (C) is contained in an amount of 5 to 99.9% by weight.
JP7988398A 1998-03-26 1998-03-26 Water repelling agent for glass Pending JPH11278870A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7988398A JPH11278870A (en) 1998-03-26 1998-03-26 Water repelling agent for glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7988398A JPH11278870A (en) 1998-03-26 1998-03-26 Water repelling agent for glass

Publications (1)

Publication Number Publication Date
JPH11278870A true JPH11278870A (en) 1999-10-12

Family

ID=13702663

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7988398A Pending JPH11278870A (en) 1998-03-26 1998-03-26 Water repelling agent for glass

Country Status (1)

Country Link
JP (1) JPH11278870A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009191331A (en) * 2008-02-15 2009-08-27 Kobe Steel Ltd Method for producing silicon oxide film
JP2017155095A (en) * 2016-02-29 2017-09-07 日華化学株式会社 Water repellent assistant, non-fluorine-based water repellent composition and manufacturing method of water repellent fiber product
JP2020189980A (en) * 2020-07-27 2020-11-26 日華化学株式会社 Non-fluorine water repellent composition, and method for producing water-repellent fiber product

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009191331A (en) * 2008-02-15 2009-08-27 Kobe Steel Ltd Method for producing silicon oxide film
JP2017155095A (en) * 2016-02-29 2017-09-07 日華化学株式会社 Water repellent assistant, non-fluorine-based water repellent composition and manufacturing method of water repellent fiber product
WO2017150176A1 (en) * 2016-02-29 2017-09-08 日華化学株式会社 Water repellent aid, non-fluorine water repellent composition, and method for producing water-repellent fiber product
JP2020189980A (en) * 2020-07-27 2020-11-26 日華化学株式会社 Non-fluorine water repellent composition, and method for producing water-repellent fiber product
JP2022081600A (en) * 2020-07-27 2022-05-31 日華化学株式会社 Water repellent assistant, non-fluorine-based water repellent composition and manufacturing method of water repellent fiber product

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