JP2015186864A - Antifouling/antifogging member and method for producing the same - Google Patents

Antifouling/antifogging member and method for producing the same Download PDF

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JP2015186864A
JP2015186864A JP2014064876A JP2014064876A JP2015186864A JP 2015186864 A JP2015186864 A JP 2015186864A JP 2014064876 A JP2014064876 A JP 2014064876A JP 2014064876 A JP2014064876 A JP 2014064876A JP 2015186864 A JP2015186864 A JP 2015186864A
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antifouling
antifogging
resin layer
resin
substance
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JP6309803B2 (en
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掛樋 浩司
Koji Kakehi
浩司 掛樋
裕美 和田
Hiromi Wada
裕美 和田
有亮 佐藤
Yusuke Sato
有亮 佐藤
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Lixil Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an antifouling/antifogging member having high antifogging properties and antifouling properties, and a production method capable of stably producing the antifouling/antifogging member.SOLUTION: An antifouling/antifogging member 1 includes a base material 10, and a coating portion 20 which is formed on the base material 10 and has antifouling properties and antifogging properties. The coating portion 20 has a resin layer 21 containing at least one matrix resin selected from the group consisting of an acrylic resin, a polyolefin resin, a fluorine resin and a silicone resin, and a substance 22 which is arranged on the surface of the resin layer 21 and has a sulfo group.

Description

本発明は、防汚防曇性部材及びその製造方法に関する。   The present invention relates to an antifouling and antifogging member and a method for producing the same.

従来、浴室内において鏡が配置されている。鏡の表面に、湯気が付着して結露すると、鏡の表面の微細な水滴が光を乱反射するので、鏡に映しだされるはずの像が視認し難くなる。このような問題に対して、鏡等の基材の表面をコーティングすることにより、結露を防止する技術が提案されている。   Conventionally, a mirror is arranged in a bathroom. If steam adheres to the surface of the mirror and condenses, fine water droplets on the surface of the mirror diffusely reflect light, making it difficult to visually recognize the image that should be projected on the mirror. In order to solve such a problem, a technique for preventing condensation by coating the surface of a substrate such as a mirror has been proposed.

具体的には、基材の表面を、基材の無機層と共有結合可能なアルコキシシリル基と親水性の高いスルホ基とを有する親水剤によってコーティングする技術が知られている(例えば、特許文献1参照)。これにより、基材の表面に親水性の高いスルホ基が露出し、結露が防止される。また、コーティング層を形成する際に、コーティング材中で相分離を進行させることで、基材の表面(外)側に親水性の高いイオン性官能基を有する化合物を移動させた防曇性部材も知られている(例えば、特許文献2及び3参照)。この部材も、コーティング層の表面側の親水性を高めることで、結露を防止している。なお、この技術では、意図的に相分離の進行を遅らせることによって基材表面の白濁を防止しようとしている。   Specifically, a technique for coating the surface of a base material with a hydrophilic agent having an alkoxysilyl group that can be covalently bonded to the inorganic layer of the base material and a highly hydrophilic sulfo group is known (for example, Patent Documents). 1). Thereby, a highly hydrophilic sulfo group is exposed on the surface of the substrate, and condensation is prevented. Further, when forming the coating layer, the anti-fogging member is obtained by moving the compound having a highly hydrophilic ionic functional group to the surface (outside) side of the base material by proceeding phase separation in the coating material. Are also known (see, for example, Patent Documents 2 and 3). This member also prevents condensation by increasing the hydrophilicity on the surface side of the coating layer. In this technique, the turbidity of the substrate surface is prevented by intentionally delaying the progress of phase separation.

特開2012−97171号公報JP 2012-97171 A 特開2012−236949号公報JP 2012-236949 A 特開2012−236950号公報JP 2012-236950 A

図3A及びB並びに図4A及びBの模式図を参照しながら従来の、基材の表面に親水性の高いスルホ基を露出させた防曇性部材について説明する。
図3A及びBは、従来の防曇性部材の理想的な状態について示したものである。図3Aに示すように、従来の防曇性部材30は、平面視において、親水性の高いスルホ基32が密に配置されており、基板のガラス31の表面はほとんど外部に露出していない。基材のガラス(SiO)の表面はほとんど外部に露出しないことにより、図3Bに示すように汚染物質33(水道水中のミネラル分や洗髪剤に含まれるシリコーンオイル等)が基材(ガラス31)の表面に近づくことができない。
A conventional antifogging member in which a highly hydrophilic sulfo group is exposed on the surface of a substrate will be described with reference to the schematic views of FIGS. 3A and 3B and FIGS. 4A and 4B.
3A and 3B show an ideal state of a conventional antifogging member. As shown in FIG. 3A, the conventional anti-fogging member 30 has a high hydrophilic sulfo group 32 densely arranged in a plan view, and the surface of the glass 31 of the substrate is hardly exposed to the outside. Since the surface of the glass (SiO 2 ) of the base material is hardly exposed to the outside, as shown in FIG. 3B, the pollutant 33 (mineral content in tap water, silicone oil contained in the hair washing agent, etc.) is the base material (glass 31). ) Cannot get close to the surface.

しかしながら、実際には、親水性の高いスルホ基32をガラス31の表面に隙間なく密に配置するのは難しい。つまり、従来の防曇性部材においては、実際には、図4A及びBに示すように、親水性の高いスルホ基32同士が互いに間隔を開けて配置されている場合が多い。親水性の高いスルホ基32同士が互いに間隔を開けて配置されていると、ガラス31の表面のうち、外部に露出する面積が広くなってしまい、図4Bに示すように汚染物質33(水道水中のミネラル分や洗髪剤に含まれるシリコーンオイル等)がガラス31の表面に近づきやすくなってしまう。汚染物質33がガラス31の表面に近づくと、ガラス31のシラノール基と反応して、除去することが困難な汚れを形成する場合がある。
なお、図5A及びB並びに図6A及びBのスルホ基32は、便宜的に「SOH」と表記したが、アルカリ金属塩の状態になっていてもよい。
However, in practice, it is difficult to arrange the highly hydrophilic sulfo groups 32 densely on the surface of the glass 31 without any gaps. That is, in the conventional anti-fogging member, in fact, as shown in FIGS. 4A and B, the highly hydrophilic sulfo groups 32 are often arranged with a space between each other. When the highly hydrophilic sulfo groups 32 are spaced apart from each other, the area exposed to the outside of the surface of the glass 31 becomes large, and as shown in FIG. Minerals, silicone oil contained in the hair washing agent, etc.) easily approach the surface of the glass 31. When the contaminant 33 approaches the surface of the glass 31, it may react with the silanol group of the glass 31 to form a stain that is difficult to remove.
5A and 5B and FIGS. 6A and 6B are described as “SO 3 H” for convenience, they may be in an alkali metal salt state.

なお、防曇性部材のコーティング層を形成する際にコーティング材中で相分離を進行させた場合、相分離の進行を遅らせたとしても基材表面の白濁を完全に防ぐことは困難である。つまり、上記の特許文献2及び3で開示された技術では、基材表面が白濁していない防曇性部材を製造することができる場合があるにしても、そのような部材を安定して製造することは困難なものと認められる。   In addition, when phase separation is advanced in the coating material when forming the coating layer of the antifogging member, it is difficult to completely prevent the white turbidity of the substrate surface even if the phase separation is delayed. That is, with the techniques disclosed in Patent Documents 2 and 3 described above, even if an anti-fogging member whose substrate surface is not clouded may be manufactured, such a member can be manufactured stably. It is recognized that it is difficult to do.

本発明は上記に鑑みてなされたものであり、その目的は、高い防曇性と防汚性を兼ね備えた防汚防曇性部材及びそのような防汚防曇性部材を安定して製造することのできる製造方法を提供することにある。   The present invention has been made in view of the above, and an object thereof is to stably manufacture an antifouling and antifogging member having high antifogging properties and antifouling properties and such an antifouling and antifogging member. It is in providing the manufacturing method which can be performed.

上記目的を達成するため本発明は、基材(例えば、後述の基材10)と、該基材上に形成された防汚性及び防曇性を有するコーティング部(例えば、後述のコーティング部20)と、を備える防汚防曇性部材(例えば、後述の防汚防曇性部材1)であって、前記コーティング部は、アクリル樹脂、ポリオレフィン樹脂、フッ素樹脂及びシリコーン樹脂からなる群より選ばれた少なくとも1種のマトリクス樹脂を含む樹脂層(例えば、後述の樹脂層21)と、前記樹脂層の表面上に配置されるスルホ基を有する物質(例えば、後述のスルホ基を有する物質22)と、を含んで構成されることを特徴とする防汚防曇性部材を提供する。   In order to achieve the above object, the present invention provides a base material (for example, a base material 10 described later) and a coating portion (for example, a coating portion 20 described later) having antifouling properties and antifogging properties formed on the base material. ), And the coating portion is selected from the group consisting of an acrylic resin, a polyolefin resin, a fluororesin, and a silicone resin. A resin layer containing at least one matrix resin (for example, a resin layer 21 described later), and a substance having a sulfo group (for example, a substance 22 having a sulfo group described later) disposed on the surface of the resin layer; Thus, an antifouling and antifogging member is provided.

この発明では、防汚防曇性部材の基材上に形成されたコーティング部が、疎水性が高い、つまり表面自由エネルギーが小さいことから汚染物質と反応し難い樹脂層と、樹脂層の表面に配置される親水性の高いスルホ基を有する物質と、を含んで構成されるものとする。
これにより、親水性の高いスルホ基を有する物質が基材表面における結露を防止するとともに、樹脂層が存在することによって、スルホ基を有する物質同士の間に侵入した汚染物質が基材表面に付着して水垢を形成してしまうのを防ぐことができる。このように、本発明により、高い防曇性と防汚性を兼ね備えた防汚防曇性部材を提供できる。
In this invention, the coating portion formed on the base material of the antifouling and antifogging member has high hydrophobicity, that is, a resin layer that is difficult to react with contaminants because of its low surface free energy, and the surface of the resin layer. And a substance having a highly hydrophilic sulfo group to be arranged.
As a result, a highly hydrophilic substance having a sulfo group prevents condensation on the substrate surface, and the presence of a resin layer allows contaminants that enter between the substances having a sulfo group to adhere to the substrate surface. Thus, it is possible to prevent the formation of scale. Thus, according to the present invention, an antifouling and antifogging member having both high antifogging properties and antifouling properties can be provided.

また、基材(例えば、後述の基材10)と、該基材上に形成された防汚性及び防曇性を有するコーティング部(例えば、後述のコーティング部20)と、を備え、前記コーティング部は、樹脂層(例えば、後述の樹脂層21)と、スルホ基を有する物質(例えば、後述のスルホ基を有する物質22)と、を含んで構成される防汚防曇性部材の製造方法であって、前記基材上に、アクリル樹脂、ポリオレフィン樹脂、フッ素樹脂及びシリコーン樹脂からなる群より選ばれた少なくとも1種のマトリクス樹脂を含む樹脂層を形成する工程と、前記工程で形成された樹脂層の表面にスルホ基を有する物質を配置する工程と、を有することを特徴とする防汚防曇性部材の製造方法を提供する。   Further, the coating includes a base material (for example, a base material 10 described later) and a coating portion (for example, a coating portion 20 described later) having antifouling properties and antifogging properties formed on the base material. Part includes a resin layer (for example, a resin layer 21 described later) and a substance having a sulfo group (for example, a substance 22 having a sulfo group described later), and a method for producing an antifouling and antifogging member. And forming a resin layer including at least one matrix resin selected from the group consisting of an acrylic resin, a polyolefin resin, a fluororesin, and a silicone resin on the substrate; and And a step of disposing a substance having a sulfo group on the surface of the resin layer. A method for producing an antifouling and antifogging member is provided.

この発明では、防汚防曇性部材の製造方法が、疎水性が高いことから汚染物質と反応し難い樹脂層を形成する工程と、親水性の高いスルホ基を有する物質を樹脂層の表面に配置する工程と、を有するものとする。
これにより、上記のように高い防曇性と防汚性を兼ね備えた防汚防曇性部材を製造することができる。また、基材上のコーティング部の形成において相分離が伴わないので、基材表面が白濁していない品質の高い防汚防曇性部材を安定して製造することができる。
In this invention, the method for producing an antifouling and antifogging member includes a step of forming a resin layer that is difficult to react with a contaminant because of its high hydrophobicity, and a substance having a highly hydrophilic sulfo group on the surface of the resin layer. And a step of arranging.
Thereby, the antifouling and antifogging member having both high antifogging properties and antifouling properties can be produced as described above. In addition, since phase separation is not involved in the formation of the coating portion on the base material, a high-quality antifouling and antifogging member whose surface of the base material is not clouded can be stably produced.

本発明によれば、高い防曇性と防汚性を兼ね備えた防汚防曇性部材及びそのような防汚防曇性部材を安定して製造することのできる製造方法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method which can manufacture stably the antifouling antifogging member which has high antifogging property and antifouling property, and such an antifouling antifogging member can be provided. .

本発明の一実施形態に係る防汚防曇性部材の平面を模式的に示した図である。It is the figure which showed typically the plane of the pollution protection anti-fogging member which concerns on one Embodiment of this invention. 上記実施形態に係る防汚防曇性部材の断面を模式的に示した図である。It is the figure which showed typically the cross section of the pollution protection antifogging member which concerns on the said embodiment. 上記実施形態に係る防汚防曇性部材の製造方法について説明するための図である。It is a figure for demonstrating the manufacturing method of the pollution protection antifogging member which concerns on the said embodiment. 本発明の一実施形態に係る防汚防曇性部材の製造方法について説明するための図である。It is a figure for demonstrating the manufacturing method of the pollution protection anti-fogging member which concerns on one Embodiment of this invention. 上記実施形態に係る防汚防曇性部材の表面の状態について模式的に示した図である。It is the figure which showed typically about the state of the surface of the antifouling antifogging member which concerns on the said embodiment. 従来の防曇性部材の平面を模式的に示した図である。It is the figure which showed typically the plane of the conventional anti-fogging member. 従来の防曇性部材の断面を模式的に示した図である。It is the figure which showed typically the cross section of the conventional anti-fogging member. 従来の防曇性部材の平面を模式的に示した図である。It is the figure which showed typically the plane of the conventional anti-fogging member. 従来の防曇性部材の断面を模式的に示した図である。It is the figure which showed typically the cross section of the conventional anti-fogging member.

以下、本発明の一実施形態について詳細に説明する。
図1Aは、本実施形態に係る防汚防曇性部材1の平面を模式的に示した図であり、図1Bは、本実施形態に係る防汚防曇性部材1の断面を模式的に示した図である。
図1Bに示すように、防汚防曇性部材1は、基材10と、基材10上に形成されたコーティング部20と、を備える。
Hereinafter, an embodiment of the present invention will be described in detail.
FIG. 1A is a diagram schematically showing a plane of the antifouling and antifogging member 1 according to the present embodiment, and FIG. 1B schematically shows a cross section of the antifouling and antifogging member 1 according to the present embodiment. FIG.
As shown in FIG. 1B, the antifouling and antifogging member 1 includes a base material 10 and a coating portion 20 formed on the base material 10.

基材10は、特に限定されないが、二酸化ケイ素等の無機物からなる、あるいは表面に無機物からなる層を有するものであることが好ましい。また、基材10は、ポリカーボネートシートであってもよい。具体的には、基材10は、鏡、洗面所や自動車の内部に使用されるウィンドウ、レンズ等が挙げられる。   Although the base material 10 is not specifically limited, It is preferable that it is a thing which consists of inorganic substances, such as a silicon dioxide, or has a layer which consists of an inorganic substance on the surface. Further, the base material 10 may be a polycarbonate sheet. Specifically, examples of the base material 10 include a mirror, a window used in a washroom or an automobile, and a lens.

コーティング部20は、樹脂層21と、樹脂層21の表面上に配置されるスルホ基を有する物質22と、を含んで構成される。
樹脂層21は、アクリル樹脂、ポリオレフィン樹脂、フッ素樹脂及びシリコーン樹脂からなる群より選ばれた少なくとも1種のマトリクス樹脂を含む。樹脂層21の含むマトリクス樹脂は、疎水性の高い、アクリル樹脂、ポリオレフィン樹脂及びフッ素樹脂からなる群より選ばれた少なくとも1種のマトリクス樹脂を含むことが好ましい。また、樹脂層21の含むマトリクス樹脂は、(メタ)アクリル酸エステルを重合したアクリル樹脂であることがより好ましい。マトリクス樹脂が、(メタ)アクリル酸エステルを重合したアクリル樹脂であることでコーティング部20の防汚性がより向上し、(メタ)アクリル酸エステルの一部が後述するスルホ基を有する物質22と結合すれば防曇性能の持続性が向上する。
The coating unit 20 includes a resin layer 21 and a substance 22 having a sulfo group disposed on the surface of the resin layer 21.
The resin layer 21 includes at least one matrix resin selected from the group consisting of acrylic resin, polyolefin resin, fluororesin, and silicone resin. The matrix resin included in the resin layer 21 preferably includes at least one matrix resin selected from the group consisting of highly hydrophobic acrylic resin, polyolefin resin, and fluororesin. The matrix resin included in the resin layer 21 is more preferably an acrylic resin obtained by polymerizing (meth) acrylic acid ester. Since the matrix resin is an acrylic resin obtained by polymerizing (meth) acrylic acid ester, the antifouling property of the coating part 20 is further improved, and a part of the (meth) acrylic acid ester having a sulfo group described later 22 When combined, the durability of the antifogging performance is improved.

ところで、コーティング部20の樹脂層21の疎水性は、樹脂層21の表面自由エネルギーと相関関係がある。つまり、樹脂層21は、疎水性が高く、表面自由エネルギーが小さい。この「表面自由エネルギー」は、物質間同士の相互作用力の指標となる。具体的には、樹脂層21は、表面自由エネルギーが小さいことから、後述する汚染物質33と反応し難く、防汚性が高い。   By the way, the hydrophobicity of the resin layer 21 of the coating part 20 has a correlation with the surface free energy of the resin layer 21. That is, the resin layer 21 has high hydrophobicity and low surface free energy. This “surface free energy” is an index of the interaction force between substances. Specifically, since the resin layer 21 has small surface free energy, it does not easily react with the contaminant 33 described later, and has high antifouling properties.

スルホ基を有する物質22は、特に限定されないが、高い親水性を有する緻密な塗膜を形成可能な、下記の化学式(1)で表されるスルホシランが重合した物質であることが好ましい。
[化1]
(RO)Si−(CH)m−SOH ・・・(1)
(化学式(1)中において、Rは、H又はCn×2(nは自然数)であり、mは、0又は自然数である。)
Although the substance 22 having a sulfo group is not particularly limited, a substance obtained by polymerizing a sulfosilane represented by the following chemical formula (1) capable of forming a dense coating film having high hydrophilicity is preferable.
[Chemical 1]
(R 1 O) 3 Si— (CH 2 ) m —SO 3 H (1)
(In the chemical formula (1), R 1 is H or C n H n × 2 (n is a natural number), and m is 0 or a natural number.)

スルホ基を有する物質22は、化学式(1)で表されるスルホシランの中でも、RがHであり、mが10以下であるスルホシランが重合した物質であることが好ましい。スルホ基を有する物質22が、このようなスルホシランが重合した物質であることで、コーティング部20の防曇性がより高くなる。特に、mが10以下であることにより、樹脂層21の表面上に後述する汚染物質33が侵入する隙間が生じにくくなるので、防汚防曇性部材1の防汚性がより向上する。スルホ基を有する物質22は、化学式(1)で表されるスルホシランの中でも、mが0〜3であるスルホシランが重合した物質であることがより好ましい。スルホ基を有する物質22は、樹脂層21を構成する樹脂と反応して結合していてもよい。 The substance 22 having a sulfo group is preferably a substance obtained by polymerizing sulfosilane having R 1 of H and m of 10 or less among the sulfosilanes represented by the chemical formula (1). Since the substance 22 having a sulfo group is a substance obtained by polymerizing such a sulfosilane, the antifogging property of the coating portion 20 is further increased. In particular, when m is 10 or less, a gap through which a contaminant 33 (described later) enters on the surface of the resin layer 21 is less likely to be generated, so that the antifouling property of the antifouling and antifogging member 1 is further improved. The substance 22 having a sulfo group is more preferably a substance obtained by polymerizing a sulfosilane having m of 0 to 3 among the sulfosilanes represented by the chemical formula (1). The substance 22 having a sulfo group may react with and bind to the resin constituting the resin layer 21.

続いて、本実施形態に係る防汚防曇性部材1の製造方法について説明する。図2A〜Cは、本実施形態に係る防汚防曇性部材1の製造方法について説明するための図である。
防汚防曇性部材1の製造方法は、基材10上に樹脂層21を形成する工程S1(図2A参照)と、樹脂層21の表面にスルホ基を有する物質22を配置する工程S2(図2B参照)と、を有する。
Then, the manufacturing method of the pollution protection antifogging member 1 which concerns on this embodiment is demonstrated. Drawing 2A-C is a figure for explaining the manufacturing method of antifouling antifogging member 1 concerning this embodiment.
The method for producing the antifouling and antifogging member 1 includes a step S1 (see FIG. 2A) for forming the resin layer 21 on the substrate 10 and a step S2 for disposing a substance 22 having a sulfo group on the surface of the resin layer 21 ( 2B).

工程S1では、上述したマトリクス樹脂の原料として、UV硬化型樹脂を用いることが好ましい。具体的には、工程S1では、UV硬化型樹脂及び光重合開始剤を含む塗料を基材10に塗布して、塗布されたUV硬化塗料にUVを照射することで樹脂層21を形成することが好ましい。工程S1においてUV硬化型樹脂が用いられる場合、UV硬化型樹脂は、アクリル樹脂、ポリオレフィン樹脂、フッ素樹脂及びシリコーン樹脂からなる群より選ばれた少なくとも1種を含む。光重合開始剤の種類や、硬化の条件は、用いられるUV硬化型樹脂の種類や濃度に応じて適宜設定される。   In step S1, it is preferable to use a UV curable resin as a raw material for the matrix resin described above. Specifically, in step S1, a resin layer 21 is formed by applying a coating material including a UV curable resin and a photopolymerization initiator to the substrate 10 and irradiating the applied UV curable coating material with UV. Is preferred. When the UV curable resin is used in step S1, the UV curable resin includes at least one selected from the group consisting of an acrylic resin, a polyolefin resin, a fluororesin, and a silicone resin. The type of photopolymerization initiator and the curing conditions are appropriately set according to the type and concentration of the UV curable resin used.

工程S1において、塗布の方法は特に限定されないが、ウエスや刷毛、バーコーターを用いて手塗りする方法や、ロールコーターを用いる方法や、ディスペンサーを用いる方法や、スリットコーターを用いる方法や、スプレー塗装する方法等を挙げることができる。   In step S1, the application method is not particularly limited, but it is a method of hand-coating using a waste, brush, or bar coater, a method using a roll coater, a method using a dispenser, a method using a slit coater, or spray coating. And the like.

基材の表面は、工程S1に先立って前処理を行っていてもよい。工程S1の前処理としては、基材10の表面と樹脂層21を強固に結合させるカップリング剤による処理、プライマー処理、エッチング処理等の化成処理、フレーム処理、プラズマ処理等の火炎処理、サンディング、ポリッシング等の物理的処理を挙げることができる。   The surface of the base material may be pretreated prior to step S1. As the pretreatment of the step S1, treatment with a coupling agent that firmly bonds the surface of the substrate 10 and the resin layer 21, conversion treatment such as primer treatment and etching treatment, flame treatment such as flame treatment and plasma treatment, sanding, A physical process such as polishing can be given.

工程S2では、スルホ基を有する物質22の原料となる化合物を含む溶液を樹脂層21の表面に塗布する。好ましくは、工程S2では、スルホ基を有する物質22の原料となる化合物と溶媒とを含有する溶液を樹脂層21の表面上に塗布し、更に加熱する。   In step S <b> 2, a solution containing a compound that is a raw material for the substance 22 having a sulfo group is applied to the surface of the resin layer 21. Preferably, in step S2, a solution containing a compound that is a raw material for the substance 22 having a sulfo group and a solvent is applied onto the surface of the resin layer 21 and further heated.

スルホ基を有する物質22の原料となる化合物は、高い親水性を有する緻密な塗膜を形成可能であることから、下記の化学式(2)で表されるスルホシランであることが好ましい。
[化2]
(RO)Si−(CH)m−SOH ・・・(1)
(化学式(1)中において、Rは、H又はCn×2(nは自然数)であり、mは、0又は自然数である。)
The compound that is a raw material of the substance 22 having a sulfo group is preferably a sulfosilane represented by the following chemical formula (2) because a dense coating film having high hydrophilicity can be formed.
[Chemical 2]
(R 1 O) 3 Si— (CH 2 ) m —SO 3 H (1)
(In the chemical formula (1), R 1 is H or C n H n × 2 (n is a natural number), and m is 0 or a natural number.)

スルホ基を有する物質22の原料となる化合物は、化学式(1)で表されるスルホシランの中でも、RがHであり、mが10以下であるスルホシランであることが好ましい。特に、mが10以下であることにより、樹脂層21の表面上に後述する汚染物質33が侵入する隙間が生じにくくなるので、防汚防曇性部材1の防汚性がより向上する。スルホ基を有する物質22の原料となる化合物は、化学式(1)で表されるスルホシランの中でも、mが0〜3であるスルホシランであることがより好ましい。スルホ基を有する物質22の原料となる化合物が、このようなスルホシランが重合した物質であることで、コーティング部20の防曇性がより高くなる。スルホ基を有する物質22は、樹脂層21を構成する樹脂と反応して結合してもよい。 The compound that is a raw material of the substance 22 having a sulfo group is preferably a sulfosilane having R 1 of H and m of 10 or less among the sulfosilanes represented by the chemical formula (1). In particular, when m is 10 or less, a gap through which a contaminant 33 (described later) enters on the surface of the resin layer 21 is less likely to be generated, so that the antifouling property of the antifouling and antifogging member 1 is further improved. The compound that is a raw material of the substance 22 having a sulfo group is more preferably a sulfosilane having m of 0 to 3 among the sulfosilanes represented by the chemical formula (1). The antifogging property of the coating part 20 becomes higher because the compound used as the raw material of the substance 22 having a sulfo group is a substance obtained by polymerizing such a sulfosilane. The substance 22 having a sulfo group may react with and bind to the resin constituting the resin layer 21.

工程S2において、塗布の方法は特に限定されないが、ウエスや刷毛、バーコーターを用いて手塗りする方法や、ロールコーターを用いる方法や、ディスペンサーを用いる方法や、スリットコーターを用いる方法や、スプレー塗装する方法等を挙げることができる。   In step S2, the method of application is not particularly limited, but it is a method of hand-coating using a waste, brush, or bar coater, a method of using a roll coater, a method of using a dispenser, a method of using a slit coater, or spray coating. And the like.

樹脂層の表面は、工程S2に先立って前処理を行っていてもよい。工程S2の前処理としては、樹脂層21と、スルホ基を有する物質22とを強固に結合させるカップリング剤による処理、プライマー処理、エッチング処理等の化成処理、フレーム処理、プラズマ処理等の火炎処理、サンディング、ポリッシング等の物理的処理を挙げることができる。   The surface of the resin layer may be pretreated prior to step S2. As pre-processing of step S2, flame treatment such as treatment with a coupling agent that strongly bonds the resin layer 21 and the substance 22 having a sulfo group, conversion treatment such as primer treatment and etching treatment, flame treatment and plasma treatment, etc. , Physical processing such as sanding and polishing.

コーティング部20は、樹脂層21と、スルホ基を有する物質22と、を含んで構成されることで、防汚性及び防曇性を有する。   The coating part 20 includes the resin layer 21 and the substance 22 having a sulfo group, thereby having antifouling properties and antifogging properties.

本実施形態によれば、以下の効果が奏される。
本実施形態では、防汚防曇性部材1の基材10上に形成されたコーティング部20が、疎水性が高い、つまり表面自由エネルギーが小さいことから汚染物質と反応し難い樹脂層21と、樹脂層21の表面に配置される親水性の高いスルホ基を有する物質22と、を含んで構成されるものとした。
これにより、親水性の高いスルホ基を有する物質22が基材10表面における結露を防止するとともに、樹脂層21が存在することによって、スルホ基を有する物質22同士の間に侵入した汚染物質33が基材表面に付着して水垢を形成してしまうのを防ぐことができる(図1B参照)。このように、本実施形態に係る防汚防曇性部材1は、高い防曇性と防汚性を兼ね備える。
なお、コーティング部20の樹脂層21は、比較的疎水性の高いマトリクス樹脂を含むが、親水性の非常に高いスルホ基を有する物質22を樹脂層21の上に配置することで、疎水性の高い樹脂層21の大きな影響を受けずに結露を防止することができる。
According to this embodiment, the following effects are produced.
In the present embodiment, the coating portion 20 formed on the base material 10 of the antifouling and antifogging member 1 has a high hydrophobicity, that is, a resin layer 21 that hardly reacts with contaminants because of its low surface free energy, And a substance 22 having a highly hydrophilic sulfo group disposed on the surface of the resin layer 21.
As a result, the highly hydrophilic substance 22 having a sulfo group prevents condensation on the surface of the base material 10, and the presence of the resin layer 21 makes it possible for the pollutant 33 that has entered between the substances 22 having a sulfo group to enter between each other. It can prevent that it adheres to the base-material surface and forms scale (refer FIG. 1B). Thus, the antifouling and antifogging member 1 according to this embodiment has both high antifogging properties and antifouling properties.
The resin layer 21 of the coating portion 20 includes a matrix resin having a relatively high hydrophobicity. However, by placing a substance 22 having a very hydrophilic sulfo group on the resin layer 21, a hydrophobic property can be obtained. Condensation can be prevented without being greatly affected by the high resin layer 21.

また、本実施形態では、防汚防曇性部材の製造方法が、疎水性が高いことから汚染物質と反応し難い樹脂層21を形成する工程S1と、親水性の高いスルホ基を有する物質22を樹脂層21の表面に配置する工程S2と、を有するものとした。
これにより、上記のように高い防曇性と防汚性を兼ね備えた防汚防曇性部材1を製造することができる。また、基材10上のコーティング部20の形成において相分離が伴わないので、基材10表面が白濁いない品質の高い防汚防曇性部材1を安定して製造することができる。
Moreover, in this embodiment, the manufacturing method of the antifouling / antifogging member includes the step S1 of forming the resin layer 21 that is difficult to react with the contaminant because of its high hydrophobicity, and the material 22 having a highly hydrophilic sulfo group. The step S2 is arranged to be disposed on the surface of the resin layer 21.
Thereby, the antifouling and antifogging member 1 having both high antifogging properties and antifouling properties can be produced as described above. Moreover, since phase separation is not accompanied in formation of the coating part 20 on the base material 10, the high quality antifouling / antifogging member 1 whose surface of the base material 10 does not become cloudy can be manufactured stably.

なお、本発明は上記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれる。   It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.

本実施形態に係る防汚防曇性部材及びその製造方法について、実施例により具体的に説明するが、本発明はこれに限定されるものではない。なお、特に断りがない限り「部」は質量基準である。   The antifouling and antifogging member and the production method thereof according to the present embodiment will be specifically described with reference to examples, but the present invention is not limited thereto. Unless otherwise specified, “part” is based on mass.

[実施例1]
PP板に、プライマーPC3−B(株式会社フロロテクノロジー製)を、ウエスを用いて塗布した。1時間常温乾燥した後、更に、スルホシラン(構造:(HO)Si−(CH−SOH)1部をイソプロピルアルコール100部で希釈して1時間攪拌した溶液を、ウエスを用いて塗布し、60℃で1時間加熱することで、実施例1の部材を得た。
[Example 1]
Primer PC3-B (manufactured by Fluoro Technology Co., Ltd.) was applied to the PP plate using a waste cloth. After drying at room temperature for 1 hour, a solution obtained by diluting 1 part of sulfosilane (structure: (HO) 3 Si— (CH 2 ) 3 —SO 3 H) with 100 parts of isopropyl alcohol and stirring for 1 hour was used with a waste cloth. The member of Example 1 was obtained by heating at 60 ° C. for 1 hour.

[実施例2]
アクリル板に、PC−3Bを、ウエスを用いて塗布した。更に、スルホシラン(構造:(HO)Si−(CH−SOH)1部をイソプロピルアルコール100部で希釈して1時間攪拌した溶液を、ウエスを用いて塗布し、60℃で1時間加熱することで、実施例2の部材を得た。
[Example 2]
PC-3B was apply | coated to the acrylic board using the waste cloth. Further, a solution obtained by diluting 1 part of sulfosilane (structure: (HO) 3 Si— (CH 2 ) 3 —SO 3 H) with 100 parts of isopropyl alcohol and stirring for 1 hour was applied with waste cloth at 60 ° C. The member of Example 2 was obtained by heating for 1 hour.

[実施例3]
UV硬化塗料FA−3118(アクリル系UV硬化塗料、日本化工塗料株式会社製)をポリカーボネートシートに塗布してUV硬化させ、8μmの塗膜(樹脂層)を得た。スルホシラン(構造:(HO)Si−(CH−SOH)1部をイソプロピルアルコール100部で希釈して1時間攪拌した溶液を調製した。フレーム処理したUV硬化塗膜(樹脂層)の表面に、スルホシラン溶液を、ウエスを用いて塗布し、80℃で1時間加熱することで実施例3の部材を得た。
[Example 3]
UV curable paint FA-3118 (acrylic UV curable paint, manufactured by Nippon Kako Paint Co., Ltd.) was applied to a polycarbonate sheet and UV cured to obtain an 8 μm coating film (resin layer). A solution was prepared by diluting 1 part of sulfosilane (structure: (HO) 3 Si— (CH 2 ) 3 —SO 3 H) with 100 parts of isopropyl alcohol and stirring for 1 hour. The member of Example 3 was obtained by applying a sulfosilane solution to the surface of the frame-treated UV cured coating film (resin layer) using a waste cloth and heating at 80 ° C. for 1 hour.

[比較例1]
未処理のPP板を実施例1の比較として用意した。
[Comparative Example 1]
An untreated PP plate was prepared for comparison with Example 1.

[比較例2]
未処理のアクリル板を実施例2の比較として用意した。
[Comparative Example 2]
An untreated acrylic plate was prepared as a comparison with Example 2.

[比較例3]
ポリカーボネートシートにUV硬化塗料FA−3118を塗布してUV硬化させ、8μmの塗膜を形成することで、比較例3の部材を得た。
[Comparative Example 3]
The member of the comparative example 3 was obtained by apply | coating UV hardening paint FA-3118 to a polycarbonate sheet, making it UV-cure, and forming a 8-micrometer coating film.

[比較例4]
ガラス表面を酸化セリウムで研磨し、純水でよく洗浄したのち、エアブローで乾燥させた。スルホシラン(構造:(HO)Si−(CH−SOH)1部をイソプロピルアルコール100部で希釈して1時間攪拌した溶液を、乾燥後のガラス上にウエスで塗布し、60℃で1時間加熱することで比較例4の部材を得た。
[Comparative Example 4]
The glass surface was polished with cerium oxide, washed thoroughly with pure water, and then dried by air blow. A solution obtained by diluting 1 part of sulfosilane (structure: (HO) 3 Si— (CH 2 ) 3 —SO 3 H) with 100 parts of isopropyl alcohol and stirring for 1 hour was applied on the dried glass with a waste cloth. The member of Comparative Example 4 was obtained by heating at 0 ° C. for 1 hour.

[比較例5]
比較例4の処方に従って得た部材の表面を、酸化セリウムで磨くことで、部分的にスルホシランに覆われ且つ部分的にガラスが露出した表面状態である比較例5の部材を得た。
[Comparative Example 5]
The surface of the member obtained in accordance with the formulation of Comparative Example 4 was polished with cerium oxide to obtain a member of Comparative Example 5 that was partially covered with sulfosilane and partially exposed to glass.

実施例及び比較例で得られた部材を、下に示した試験・測定に供した。   The members obtained in Examples and Comparative Examples were subjected to the tests and measurements shown below.

<水接触角の測定>
接触角計DM−500(協和界面科学株式会社)を用い、各部材の表面で水接触角(単位:°)を測定した。結果を表1に示す。
<Measurement of water contact angle>
Using a contact angle meter DM-500 (Kyowa Interface Science Co., Ltd.), the water contact angle (unit: °) was measured on the surface of each member. The results are shown in Table 1.

<水垢除去試験>
水道水を各部材の表面に噴霧し、40℃温風で2時間乾燥させた。この操作を30回繰り返し、水道水中の溶存ミネラルを各部材の表面に析出させた。各部材の表面に析出したミネラル汚れを濡れスポンジで拭き掃除した後の、ミネラル汚れの除去率を、下記数式(1)に基づき算出した結果を表1に示す。なお、下記数式(1)の、「拭き掃除後のミネラル汚れ残存面積」及び「拭き掃除前のミネラル汚れ付着面積」は、目視にて算出した。水垢除去試験の結果は、下記の判定基準により評価することができる。
[数1]
除去率={1−(拭き掃除後のミネラル汚れ残存面積/拭き掃除前のミネラル汚れ付着面積)}×100 ・・・(1)
<Scale removal test>
Tap water was sprayed on the surface of each member and dried with hot air at 40 ° C. for 2 hours. This operation was repeated 30 times, and dissolved minerals in tap water were deposited on the surface of each member. Table 1 shows the results of calculating the removal rate of mineral stains after the mineral stains deposited on the surface of each member were wiped and cleaned with a wet sponge based on the following formula (1). In addition, “the mineral dirt remaining area after wiping cleaning” and “the mineral dirt adhesion area before wiping cleaning” of the following mathematical formula (1) were calculated visually. The result of the scale removal test can be evaluated according to the following criteria.
[Equation 1]
Removal rate = {1- (Mineral dirt remaining area after wiping / Mineral dirt adhesion area before wiping)} × 100 (1)

<耐汚染性試験>
オレイン酸5部とステアリン酸カルシウム5部とを混合した擬似汚れを各部材上に塗布し、40℃の温水をシャワーで3分間当てた後の擬似汚れの除去率を下記数式(2)に基づき算出しした。結果を表1に示す。なお、下記数式(2)の、「洗浄後の擬似汚れ残存面積」及び「洗浄前の擬似汚れ付着面積」は、目視にて算出した。耐汚染性試験の結果は、下記の判定基準により評価することができる。
[数2]
除去率={1−(洗浄後の擬似汚れ残存面積/洗浄前の擬似汚れ付着面積)}×100 ・・・(2)
<Contamination resistance test>
Applying pseudo-stains mixed with 5 parts of oleic acid and 5 parts of calcium stearate on each member and calculating the removal rate of pseudo-stains after applying hot water of 40 ° C. for 3 minutes in a shower based on the following formula (2) I did. The results are shown in Table 1. In addition, the “pseudo-stain remaining area after cleaning” and “pseudo-stain adhesion area before cleaning” in the following mathematical formula (2) were calculated visually. The result of the stain resistance test can be evaluated according to the following criteria.
[Equation 2]
Removal rate = {1− (remaining area of pseudo dirt after cleaning / pseudo dirt adhesion area before cleaning)} × 100 (2)

<防曇性評価>
80℃に熱した温水の上に各サンプルを配置し、曇る(結露する)までの時間を測定し、下記の判定基準により評価した。結果を表1に示す。なお、測定は、10分で終了した。
<Anti-fogging evaluation>
Each sample was placed on hot water heated to 80 ° C., and the time until clouding (condensation) was measured, and evaluated according to the following criteria. The results are shown in Table 1. The measurement was completed in 10 minutes.

<磨耗試験>
水を含ませたスポンジ(住友3MスコッチブライトS−21K)に1kgの荷重を掛け、各部材の表面を10000回往復磨耗した。スポンジの乾燥を防ぐため、500往復ごとに、水を供給した。磨耗試験後、上に示した試験・測定を実施し、部材のコーティング部の耐久性を確認した。結果を表1に示す。
<Abrasion test>
A load of 1 kg was applied to a sponge soaked with water (Sumitomo 3M Scotch Bright S-21K), and the surface of each member was worn back and forth 10,000 times. In order to prevent the sponge from drying, water was supplied every 500 reciprocations. After the wear test, the test and measurement shown above were performed to confirm the durability of the coating portion of the member. The results are shown in Table 1.

<耐リンス試験>
各部材のシリコーンオイルの吸着・除去性について以下の方法で試験した。水で50倍に希釈した市販の頭髪用化粧品(LUXスーパーリッチシャインコンディショナー、ユニリーバ・ジャパン株式会社製)を、霧吹きで各部材の表面にまんべんなく吹きつけ、10分間放置した。これを50回繰り返した後、洗浄剤(バスマジックリン泡立ちスプレー、花王株式会社)とスポンジを用いて各部材の表面を洗浄した。耐リンス試験後、上に示した試験・測定を実施し、部材のコーティング部の耐久性を確認した。結果を表1に示す。
<Rinse resistance test>
The silicone oil adsorption / removability of each member was tested by the following method. Commercially available hair cosmetics diluted with water 50 times (LUX Super Rich Shine Conditioner, manufactured by Unilever Japan Co., Ltd.) were sprayed evenly on the surface of each member with a mist sprayer and left for 10 minutes. After repeating this 50 times, the surface of each member was cleaned using a cleaning agent (Bath Magiclin Foaming Spray, Kao Corporation) and a sponge. After the rinse resistance test, the test and measurement described above were performed to confirm the durability of the coating portion of the member. The results are shown in Table 1.

Figure 2015186864
Figure 2015186864

実施例1と比較例1との比較から、実施例1の部材の方が比較例1の部材よりも表面の水接触角が低い(親水性が高い)ことが分かった。この結果から、樹脂層の表面にスルホ基を有する物質を配置しない部材よりも、樹脂層の表面にスルホ基を有する物質を配置した部材の方が、防曇性が高いことが確認された。このことは、実施例2と比較例2との比較及び実施例3と比較例3との比較からも明らかである。   From a comparison between Example 1 and Comparative Example 1, it was found that the member of Example 1 had a lower surface water contact angle (higher hydrophilicity) than the member of Comparative Example 1. From this result, it was confirmed that the member in which the substance having a sulfo group is arranged on the surface of the resin layer has higher antifogging property than the member in which the substance having a sulfo group is not arranged on the surface of the resin layer. This is also clear from the comparison between Example 2 and Comparative Example 2 and the comparison between Example 3 and Comparative Example 3.

また、実施例1〜3と比較例4(及び5)との比較から、実施例1〜3の部材の方が、比較例4の部材よりも水垢除去性が高いことが確認された。この結果から、ガラス等の基材の表面にマトリクス樹脂を含む樹脂層を形成してから、その樹脂層の表面にスルホ基を有する物質を配置した部材の方が、基材の表面に直接スルホ基を有する物質を配置した部材よりも、防汚性が高いことが明らかである。   In addition, from comparison between Examples 1 to 3 and Comparative Example 4 (and 5), it was confirmed that the members of Examples 1 to 3 had higher scale removal performance than the members of Comparative Example 4. From this result, a member in which a resin layer containing a matrix resin is formed on the surface of a substrate such as glass and a substance having a sulfo group on the surface of the resin layer is directly attached to the surface of the substrate. It is clear that the antifouling property is higher than that of a member in which a substance having a group is arranged.

なお、実施例1及び2では、ガラス等の基材上に樹脂層を形成していない。しかし、ガラス等の基材上に、実施例1のPP板に相当する樹脂層あるいは実施例2のアクリル板に相当する樹脂層を設けて、その樹脂層上にスルホ基を有する物質を配置したとしても、実施例1及び2と同等の試験結果が得られることは明らかである。   In Examples 1 and 2, a resin layer is not formed on a substrate such as glass. However, a resin layer corresponding to the PP plate of Example 1 or a resin layer corresponding to the acrylic plate of Example 2 is provided on a substrate such as glass, and a substance having a sulfo group is disposed on the resin layer. However, it is clear that the same test results as in Examples 1 and 2 can be obtained.

1…防汚防曇性部材
10…基材
20…コーティング部
21…樹脂層
22…スルホ基を有する物質
DESCRIPTION OF SYMBOLS 1 ... Antifouling anti-fogging member 10 ... Base material 20 ... Coating part 21 ... Resin layer 22 ... Substance which has a sulfo group

Claims (2)

基材と、該基材上に形成された防汚性及び防曇性を有するコーティング部と、を備える防汚防曇性部材であって、
前記コーティング部は、アクリル樹脂、ポリオレフィン樹脂、フッ素樹脂及びシリコーン樹脂からなる群より選ばれた少なくとも1種のマトリクス樹脂を含む樹脂層と、前記樹脂層の表面上に配置されるスルホ基を有する物質と、を含んで構成されることを特徴とする防汚防曇性部材。
An antifouling and antifogging member comprising a substrate and a coating portion having antifouling and antifogging properties formed on the substrate,
The coating portion includes a resin layer containing at least one matrix resin selected from the group consisting of an acrylic resin, a polyolefin resin, a fluororesin, and a silicone resin, and a substance having a sulfo group disposed on the surface of the resin layer And an antifouling antifogging member characterized by comprising.
基材と、該基材上に形成された防汚性及び防曇性を有するコーティング部と、を備え、前記コーティング部は、樹脂層と、スルホ基を有する物質と、を含んで構成される防汚防曇性部材の製造方法であって、
前記基材上に、アクリル樹脂、ポリオレフィン樹脂、フッ素樹脂及びシリコーン樹脂からなる群より選ばれた少なくとも1種のマトリクス樹脂を含む樹脂層を形成する工程と、
前記工程で形成された樹脂層の表面にスルホ基を有する物質を配置する工程と、を有することを特徴とする防汚防曇性部材の製造方法。
A substrate and a coating portion having antifouling properties and antifogging properties formed on the substrate, and the coating portion includes a resin layer and a substance having a sulfo group. A method for producing an antifouling and antifogging member,
Forming a resin layer containing at least one matrix resin selected from the group consisting of an acrylic resin, a polyolefin resin, a fluororesin, and a silicone resin on the substrate;
And a step of disposing a substance having a sulfo group on the surface of the resin layer formed in the step, and a method for producing an antifouling and antifogging member.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58149947A (en) * 1982-03-01 1983-09-06 Toray Silicone Co Ltd Room temperature-curable organopolysiloxane composition
JPH0827290A (en) * 1994-07-19 1996-01-30 Sekisui Chem Co Ltd Production of antifogging coated article
WO2002102907A1 (en) * 2001-06-13 2002-12-27 Nippon Arc Co., Ltd. Coating composition and article coated with the composition
JP2008073963A (en) * 2006-09-21 2008-04-03 Fujifilm Corp Hydrophilic member and its manufacturing method
JP2009101318A (en) * 2007-10-25 2009-05-14 Shiseido Co Ltd Surface modifying method and surface-modified material
JP2010138156A (en) * 2008-12-11 2010-06-24 Hirosaki Univ Nano-substance, nano-composite, nano liquid dispersion, method for producing the same, and various agents comprising the liquid dispersion
WO2013014733A1 (en) * 2011-07-25 2013-01-31 三井化学株式会社 Monolayer film and hydrophilic material comprising same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58149947A (en) * 1982-03-01 1983-09-06 Toray Silicone Co Ltd Room temperature-curable organopolysiloxane composition
JPH0827290A (en) * 1994-07-19 1996-01-30 Sekisui Chem Co Ltd Production of antifogging coated article
WO2002102907A1 (en) * 2001-06-13 2002-12-27 Nippon Arc Co., Ltd. Coating composition and article coated with the composition
JP2008073963A (en) * 2006-09-21 2008-04-03 Fujifilm Corp Hydrophilic member and its manufacturing method
JP2009101318A (en) * 2007-10-25 2009-05-14 Shiseido Co Ltd Surface modifying method and surface-modified material
JP2010138156A (en) * 2008-12-11 2010-06-24 Hirosaki Univ Nano-substance, nano-composite, nano liquid dispersion, method for producing the same, and various agents comprising the liquid dispersion
WO2013014733A1 (en) * 2011-07-25 2013-01-31 三井化学株式会社 Monolayer film and hydrophilic material comprising same

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