JPS624761A - Coating composition - Google Patents
Coating compositionInfo
- Publication number
- JPS624761A JPS624761A JP14530985A JP14530985A JPS624761A JP S624761 A JPS624761 A JP S624761A JP 14530985 A JP14530985 A JP 14530985A JP 14530985 A JP14530985 A JP 14530985A JP S624761 A JPS624761 A JP S624761A
- Authority
- JP
- Japan
- Prior art keywords
- tin oxide
- binder resin
- resin
- transparency
- coating composition
- 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.)
- Granted
Links
Landscapes
- Conductive Materials (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、導電性と透明性を併有するコーティング組成
物に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a coating composition that is both electrically conductive and transparent.
従来の技術
バインダー樹脂を含む溶剤中に導電性酸化錫微粉末を分
散させたコーティング組成物は従来より種々知られてい
る。このようなコーティング組成物は透明性が要求され
る場合も多く、導電性と透明性を併有するものは、クリ
ーンルームや電子部品搬送容器に使われるプラスチック
基板のコーティング剤としての用途に適する。そのため
、従来のコーティング組成物は、現に市販されているも
のも含めて、コーテイング後の透明性を高めるために種
々の工夫が講じられたものとなっている。BACKGROUND OF THE INVENTION Various coating compositions in which conductive tin oxide fine powder is dispersed in a solvent containing a binder resin are known. Transparency is often required for such coating compositions, and those that have both conductivity and transparency are suitable for use as coating agents for plastic substrates used in clean rooms and containers for transporting electronic components. Therefore, conventional coating compositions, including those currently on the market, have undergone various efforts to improve transparency after coating.
そこで、本発明者は従来のコーティング組成物の透明性
について種々調査した。その結果、従来のコーティング
組成物は、導電性酸化錫微粉末が全固形分の６０〜７０
−ｔ％含まれ、そのバインダー樹脂としてアクリル酸エ
ステル系樹脂又はポリエステル系樹脂が全固形分の４０
〜３０ｗ ｔ％含まれおり、バインダー樹脂としてはそ
れ以外の樹脂が使われていないこと、また、透明性の指
標である屈折率を個々の成分についてみると、酸化錫が
１．９９６８、アクリル酸エステル系樹脂が１．４９〜
１．５、ポリエステル系樹脂が１．５２〜１．５５程度
で、屈折率から判断すると、酸化錫とアクリル酸エステ
ル系樹脂の組成物、酸化錫とポリエステル系樹脂の組成
物は透明性がそれほど高いものとは考えられないにもか
かわらず、コーテイング後の被覆層の透明性はクリーン
ルームや電子部品搬送容器材料としてのプラスチック基
板のコーティング剤として十分に使用できる程度の透明
性を示していることが判った。Therefore, the present inventor conducted various investigations regarding the transparency of conventional coating compositions. As a result, in conventional coating compositions, conductive tin oxide fine powder accounts for 60 to 70% of the total solids content.
-t%, and the binder resin is acrylic ester resin or polyester resin, and the total solid content is 40%.
It contains ~30wt%, and no other resin is used as a binder resin.Also, looking at the refractive index of each component, which is an index of transparency, tin oxide is 1.9968, acrylic acid is 1.9968 Ester resin is 1.49~
1.5, the polyester resin is about 1.52 to 1.55, and judging from the refractive index, the composition of tin oxide and acrylic ester resin, and the composition of tin oxide and polyester resin are not as transparent. Although it is not considered to be high, the transparency of the coating layer after coating is sufficient to be used as a coating agent for plastic substrates used in clean rooms and electronic component transportation containers. understood.
これは、被覆層の導電物質が超微粉の酸化錫を使用して
いること、酸化錫とバインダー樹脂とのなじみ性が良好
であること、等と関係が深いからであると考えられる。This is thought to be due to the fact that ultrafine tin oxide is used as the conductive material in the coating layer, and the compatibility between the tin oxide and the binder resin is good.
発明が解決しようとする問題点
しかしながら、上記調査では、アクリル酸エステル系樹
脂又はポリエステル系樹脂をバインダーとして使用した
従来のコーティング組成物をプラスチックフィルムに塗
布乾燥後、このフィルムを基板にホントプレスすると、
プレス機のプレス板、即ちクロム仕上げのステンレス鏡
面板或いは同仕上げの黄銅鏡面板へのバインダー樹脂の
付着が著しく、付着したバインダー樹脂の除去作業に手
間がかかり、生産性を著しく低下させるという問題点の
あることが判明した。即ち、従来のコーティング組成物
を上記の手段でホットプレスすると、そのバインダー樹
脂であるアクリル酸エステル系又はポリエステル系の樹
脂が鏡面板の全面に付着しミ部分的にはべっとりと付着
する問題点があった。Problems to be Solved by the Invention However, in the above investigation, it was found that when a conventional coating composition using an acrylic ester resin or a polyester resin as a binder is applied to a plastic film and dried, the film is pressed onto a substrate.
The problem is that the binder resin adheres significantly to the press plate of the press machine, that is, the stainless steel mirror plate with chrome finish or the brass mirror plate with the same finish, and it takes time and effort to remove the adhered binder resin, which significantly reduces productivity. It turned out that there is. That is, when a conventional coating composition is hot-pressed by the above-mentioned method, there is a problem that the binder resin, which is an acrylic ester or polyester resin, adheres to the entire surface of the mirror plate and sticks stickyly to some parts. there were.
そこで、その問題点を解消するために、本発明者は上記
鏡面板に対して難着性のある直鎖塩化ビニル樹脂をバイ
ンダー樹脂に用いたコーティング組成物について、コー
テイング後の導電性と透明性、並びにホットプレス時の
鏡面板へのバインダー樹脂の付着性について調査した。Therefore, in order to solve this problem, the present inventor developed a coating composition using a linear vinyl chloride resin, which has difficulty adhering to the mirror plate, as a binder resin, to improve the conductivity and transparency after coating. , and the adhesion of the binder resin to the mirror plate during hot pressing.
その結果、鏡面板へのバインダー樹脂の付着性が改善さ
れ、導電性は従来のコーティング組成物と同程度の値を
示したものの、透明性について好ましい結果が得られな
いことが判明した。As a result, it was found that although the adhesion of the binder resin to the mirror plate was improved and the conductivity was comparable to that of conventional coating compositions, favorable results were not obtained in terms of transparency.
以上の背景の下で、本発明者は、ホットプレス時に鏡面
板に付着しにくく、しかも十分な導電性と透明性を有す
るコーティング組成物を得べく鋭意調査し、本発明を完
成するに至った。Under the above background, the present inventor conducted extensive research in order to obtain a coating composition that is difficult to adhere to the mirror plate during hot pressing and has sufficient conductivity and transparency, and has completed the present invention. .
即ち、本発明は、コーテイング後の導電性と透明性が従
来のコーティング組成物に比べて遜色なく、しかも、ホ
ットプレス時にプレス機の鏡面板に対して離着性を示す
コーティング組成物を提供することを目的としている。That is, the present invention provides a coating composition that has conductivity and transparency after coating that are comparable to those of conventional coating compositions, and that exhibits releasability to the mirror plate of a press during hot pressing. The purpose is to
問題点を解決するための手段
上記問題点を解決するため、本発明は、バインダー樹脂
を含む溶剤中に導電性酸化錫微粉末を分散させてなるコ
ーティング組成物であって、上記バインダー樹脂がエス
テル結合を持つ塩化ビニル系樹脂であることを特徴とす
る。Means for Solving the Problems In order to solve the above problems, the present invention provides a coating composition comprising conductive tin oxide fine powder dispersed in a solvent containing a binder resin, the binder resin being an ester. It is characterized by being a vinyl chloride resin with bonds.
ところで、プラスチック材をコーティング組成物で表面
被覆した場合、その被覆層の透明性は上述のように酸化
錫微粉末とバインダー樹脂とのなじみ性の良し悪しに影
響される。そこで、そのなじみ性の良し悪しを決定する
要素が何かを知ることが有益である。このような観点か
ら本発明者は従来のコーティング組成物のバインダー樹
脂に用いられているアクリル酸エステル系樹脂とポリエ
ステル系樹脂との共通点を考察したところ、双方共その
分子内にエステル結合を持っているという共通点がある
ことを突き止め、エステル結合を持つバインダー樹脂で
あれば酸化錫とのなじみ性が良くなって高い透明性が得
られるであろうと推定−した。本発明においてバインダ
ー樹脂をエステル結合を持つ塩化ビニル系樹脂に限定し
た理由はこのためである。By the way, when the surface of a plastic material is coated with a coating composition, the transparency of the coating layer is influenced by the compatibility of the fine tin oxide powder and the binder resin as described above. Therefore, it is useful to know what factors determine whether the familiarity is good or bad. From this point of view, the present inventor considered the similarities between acrylic ester resins and polyester resins, which are used as binder resins in conventional coating compositions, and found that both have ester bonds in their molecules. They found that there was a common feature between the two, and surmised that a binder resin with ester bonds would have better compatibility with tin oxide and would provide high transparency. This is the reason why the binder resin in the present invention is limited to a vinyl chloride resin having an ester bond.
上記のエステル結合を持つ塩化ビニル系樹脂には、代表
的なものとしてポリ塩化ビニルと酢酸ビニルの共重合体
（塩ビー酢ビ共重合体）があり、その他にも塩化ビニル
−エチレン−酢酸ビニル共重合体等がある。これらはい
ずれも分子内にエステル結合を持つものであるから、酸
化錫とのなじみ性が良い。酸化錫に代えて酸化インジウ
ムを用いた場合も同様のことがいえる。Among the vinyl chloride resins with ester bonds mentioned above, a typical example is a copolymer of polyvinyl chloride and vinyl acetate (vinyl chloride-vinyl acetate copolymer), as well as vinyl chloride-ethylene-vinyl acetate copolymer. There are copolymers, etc. Since all of these have ester bonds in their molecules, they have good compatibility with tin oxide. The same thing can be said when indium oxide is used instead of tin oxide.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
実施例 本発明のコーティング組成物の調製例を次に示す。Example An example of preparing the coating composition of the present invention is shown below.
固形分として酸化錫とバインダー樹脂としての塩ビー酢
ビ共重合体との含量が全床の２４−ｔ％であり、酸化錫
はそのうちの６０〜８５−ｔ％であり、残りがバインダ
ー樹脂である。酸化錫が６０ｗｔ％より少ないとコーテ
ィングによって形成される被覆層の表面抵抗率が１０１
０オームよりも高くなり、十分な導電性を得にくい。８
５−ｔ％より多いと被覆層の透明性が阻害され、バイン
ダー樹脂に均一に分散されにく（、しかもバインダー樹
脂の含量が相対的に少なくなるのでプラスチック材との
接合力が不足する傾向を生じる。６０〜８５ｗ ｔ％で
あると、被覆層の表面抵抗率が１ｏ１０〜１０’オーム
となり、十分な導電性が得られ、かつプラスチック材に
対する十分な接合力が得られる。上記の固形分以外には
分散剤としての界面活性剤を酸化錫の２ｗｔ％、溶剤を
７６ｗ ｔ％混合する。溶剤には例えばシクロへキサノ
ン３部に対してメチルイソブチルケトン７部の混合溶剤
を使用する。また、酸化錫に酸化アンチモン１０ｗｔ％
をドーピングして酸化錫の欠陥格子を補うと導電性が向
上する。なお、酸化錫の代わりに酸化インジウムを使っ
てもよい。The content of tin oxide as a solid content and vinyl chloride-vinyl acetate copolymer as a binder resin is 24-t% of the total bed, of which tin oxide is 60-85-t%, and the remainder is the binder resin. be. When the tin oxide content is less than 60 wt%, the surface resistivity of the coating layer formed by coating is 101
It becomes higher than 0 ohm, making it difficult to obtain sufficient conductivity. 8
If the amount exceeds 5-t%, the transparency of the coating layer will be inhibited and it will be difficult to be uniformly dispersed in the binder resin. If the content is 60 to 85 wt%, the surface resistivity of the coating layer will be 10 to 10' ohm, and sufficient conductivity will be obtained, as well as sufficient bonding force to the plastic material. 2 wt% of tin oxide is mixed with a surfactant as a dispersant and 76 wt% of a solvent.For example, a mixed solvent of 3 parts of cyclohexanone and 7 parts of methyl isobutyl ketone is used as the solvent.Also, Antimony oxide 10wt% in tin oxide
Conductivity is improved by doping to compensate for the defective lattice of tin oxide. Note that indium oxide may be used instead of tin oxide.
次に実験例を示す。Next, an experimental example will be shown.
実験例１
キシレン１２４ ｃｃに第一工業製薬■製の界面活性剤
５ＡＳ−１３を１．２ｇ入れて溶解し、別に三菱金属■
製の酸化錫Ｔ−１を６２．２ｇを秤量し、両者をホモジ
ナイザーで約３０分間、 １５００ｒｐｍで混合撹拌し
た（Ａ液）。また、これとは別に、シクロへキサノン１
２４ ｃｃに三菱化成■製の安定剤 ２０００ Ｅ ０
゜４ｇを溶解し、コレニカネカＭ１００８（ｒ＝８００
塩ヒー酢酸ビ５ｅｏｔ％共重合体） １２．４ｇを溶解
した（Ｂ液）。Experimental Example 1 Add and dissolve 1.2 g of surfactant 5AS-13 manufactured by Daiichi Kogyo Seiyaku ■ in 124 cc of xylene, and separately dissolve the surfactant 5AS-13 manufactured by Daiichi Kogyo Seiyaku ■.
Weighed 62.2 g of tin oxide T-1 manufactured by A. Co., Ltd., and mixed and stirred the two using a homogenizer at 1500 rpm for about 30 minutes (liquid A). In addition, apart from this, cyclohexanone 1
24 cc with stabilizer made by Mitsubishi Kasei 2000 E 0
Dissolve 4g of Korenikaneka M1008 (r=800
12.4 g of 5eot% salt-heat-vinyl acetate copolymer was dissolved (liquid B).
次に、Ａ液にＢ液を入れ、ホモジナイザーで約４時間、
６０００ｒｐｍで両液を均一に分散させた（本発明品
）。Next, add liquid B to liquid A and use a homogenizer for about 4 hours.
Both solutions were uniformly dispersed at 6000 rpm (product of the present invention).
また、上記のカネカＭ１００８に代えて、リューロン８
００Ｂ ｔ、 （Ｗ−８ｏＯ直鎖ポリ塩化ビニル樹脂）
を同量使用してＢ液を調製した（比較品）。Also, instead of Kaneka M1008 mentioned above, Ryuron 8
00B t, (W-8oO linear polyvinyl chloride resin)
Solution B was prepared using the same amount of (comparative product).
上記の発明品及び比較品を厚み０．２ ｔｍのポリ塩化
ビニル樹脂フィルムにコーティングバーＮｏ６で塗布し
、十分な自然乾燥後に光線透過率を測定した。なお、ポ
リ塩化ビニル樹脂フィルムに形成された被覆層の厚みは
塗布直後のウェット状態において１３．７鶴であった。The above invention products and comparative products were coated on a polyvinyl chloride resin film with a thickness of 0.2 tm using coating bar No. 6, and after sufficient air drying, the light transmittance was measured. The thickness of the coating layer formed on the polyvinyl chloride resin film was 13.7 mm in the wet state immediately after coating.
光線透過率の測定結果を次表に示す。The measurement results of light transmittance are shown in the table below.
上表より、合皮で発明品の方が１５〜２０％程度小さく
、発明品が比較品よりも透明性に優れていることが判明
した。From the above table, it was found that the synthetic leather of the invented product was about 15 to 20% smaller, and that the invented product had better transparency than the comparative product.
実験例２
実験例１に準じて従来品の光線透過率を調べ、実験例１
の発明品と比較した。その結果、従来品と発明品とは、
光線透過率において差がみられなかった。Experimental Example 2 The light transmittance of the conventional product was investigated according to Experimental Example 1.
compared with the invention of As a result, the conventional product and the invented product are
No difference was observed in light transmittance.
（以下、余白） 実験例３ 発明品と従来品との導電性を比較する。(Hereafter, margin) Experimental example 3 Compare the conductivity of the invented product and the conventional product.
実験例４
厚み３ｆｌのポリ塩化ビニル樹脂基板に、本発明品のコ
ーティング組成物を表面被覆したポリ塩化ビニル樹脂フ
ィルムをホットプレスで積層して、プレス機の鏡面板に
対する付着性を調べた。ホソ′トブレスノ温度は１６０
℃、加圧力は４５ｋｇ／ｃｍ”、鏡面板は表面を研磨パ
フ仕上げしたものを使用した。Experimental Example 4 A polyvinyl chloride resin film whose surface was coated with the coating composition of the present invention was laminated on a 3 fl thick polyvinyl chloride resin substrate using a hot press, and its adhesion to the mirror plate of a press was examined. Hoso'tobresno temperature is 160
℃, the pressure was 45 kg/cm'', and the surface of the mirror plate was polished and puffed.
その結果、鏡面板の表面へのバインダー樹脂の付着はほ
とんど生じなかった。As a result, there was almost no adhesion of the binder resin to the surface of the mirror plate.
発明の効果
以上より明らかなように、本発明のコーティング組成物
は、導電性と透明性において従来品と遜色無く、ホット
プレス時のプレス機の鏡面板への難着性において従来品
よりも格段に優れ、また、バインダー樹脂として直鎖ポ
リ塩化ビニル樹脂を使用したものと遜色ない。特に、本
発明のコーティング組成物はバインダー樹脂として塩化
ビニル系樹脂を使用するので、プラスチック基板がポリ
塩化ビニル樹脂である場合には強力な接合力が得られる
。そして、ポリ塩化ビニル樹脂は最も汎用性に冨むプラ
スチックであり、プラスチック基板としても多用されて
いるので、この点で好都合であり、しかも、耐薬品性を
向上させる上でもポリ塩化ビニル系樹脂をバインダー樹
脂として用いることに実益がある。Effects of the Invention As is clear from the above, the coating composition of the present invention is comparable to conventional products in terms of conductivity and transparency, and is significantly more difficult to adhere to the mirror plate of a press during hot pressing than conventional products. It has excellent properties and is comparable to those using linear polyvinyl chloride resin as the binder resin. In particular, since the coating composition of the present invention uses vinyl chloride resin as the binder resin, strong bonding force can be obtained when the plastic substrate is made of polyvinyl chloride resin. Polyvinyl chloride resin is the most versatile plastic and is often used as a plastic substrate, so it is advantageous in this respect, and moreover, polyvinyl chloride resin can also be used to improve chemical resistance. There are practical benefits to using it as a binder resin.
Claims (1)
導電性酸化インジウムの微粉末を分散させてなるコーテ
ィング組成物であって、上記バインダー樹脂がエステル
結合を持つ塩化ビニル系樹脂であることを特徴とするコ
ーティング組成物。(1) A coating composition comprising fine powder of conductive tin oxide or conductive indium oxide dispersed in a solvent containing a binder resin, wherein the binder resin is a vinyl chloride resin having an ester bond. Characteristic coating composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60145309A JPH0615071B2 (en) | 1985-07-01 | 1985-07-01 | Method for forming conductive coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60145309A JPH0615071B2 (en) | 1985-07-01 | 1985-07-01 | Method for forming conductive coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS624761A true JPS624761A (en) | 1987-01-10 |
| JPH0615071B2 JPH0615071B2 (en) | 1994-03-02 |
Family
ID=15382171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60145309A Expired - Fee Related JPH0615071B2 (en) | 1985-07-01 | 1985-07-01 | Method for forming conductive coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615071B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5376308A (en) * | 1990-11-21 | 1994-12-27 | Catalysts & Chemicals Industries Co., Ltd. | Coating solution for forming transparent conductive coating and process for preparing same |
| DE4435376A1 (en) * | 1993-10-05 | 1995-04-27 | Dainippon Toryo Kk | Composition for the formation of conductive films |
| US5504133A (en) * | 1993-10-05 | 1996-04-02 | Mitsubishi Materials Corporation | Composition for forming conductive films |
| WO2004007189A1 (en) * | 2002-07-17 | 2004-01-22 | Sekisui Chemical Co., Ltd. | Antistatic molded article and antistatic paint |
| JP2016207607A (en) * | 2015-04-28 | 2016-12-08 | 日立マクセル株式会社 | Transparent conductive film composition, production method of transparent conductive sheet, and transparent conductive sheet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59215326A (en) * | 1983-05-23 | 1984-12-05 | Takiron Co Ltd | Production of antistatic synthetic resin sheet |
| JPS6074208A (en) * | 1983-09-29 | 1985-04-26 | 三菱樹脂株式会社 | Method of forming conductive paint film |
| JPS619464A (en) * | 1984-06-22 | 1986-01-17 | Sekisui Chem Co Ltd | Antistatic paint |
-
1985
- 1985-07-01 JP JP60145309A patent/JPH0615071B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59215326A (en) * | 1983-05-23 | 1984-12-05 | Takiron Co Ltd | Production of antistatic synthetic resin sheet |
| JPS6074208A (en) * | 1983-09-29 | 1985-04-26 | 三菱樹脂株式会社 | Method of forming conductive paint film |
| JPS619464A (en) * | 1984-06-22 | 1986-01-17 | Sekisui Chem Co Ltd | Antistatic paint |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5376308A (en) * | 1990-11-21 | 1994-12-27 | Catalysts & Chemicals Industries Co., Ltd. | Coating solution for forming transparent conductive coating and process for preparing same |
| US5492762A (en) * | 1990-11-21 | 1996-02-20 | Catalysts & Chemicals Industries Co., Ltd. | Conductive substrate and display device provided with transparent conductive substrate |
| DE4435376A1 (en) * | 1993-10-05 | 1995-04-27 | Dainippon Toryo Kk | Composition for the formation of conductive films |
| US5504133A (en) * | 1993-10-05 | 1996-04-02 | Mitsubishi Materials Corporation | Composition for forming conductive films |
| DE4435376B4 (en) * | 1993-10-05 | 2004-11-11 | Dai Nippon Toryo Co., Ltd. | Composition for forming conductive films |
| WO2004007189A1 (en) * | 2002-07-17 | 2004-01-22 | Sekisui Chemical Co., Ltd. | Antistatic molded article and antistatic paint |
| JP2016207607A (en) * | 2015-04-28 | 2016-12-08 | 日立マクセル株式会社 | Transparent conductive film composition, production method of transparent conductive sheet, and transparent conductive sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0615071B2 (en) | 1994-03-02 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |