JP2002121484A - Heat-resistant coating for dot printing - Google Patents
Heat-resistant coating for dot printingInfo
- Publication number
- JP2002121484A JP2002121484A JP2000314074A JP2000314074A JP2002121484A JP 2002121484 A JP2002121484 A JP 2002121484A JP 2000314074 A JP2000314074 A JP 2000314074A JP 2000314074 A JP2000314074 A JP 2000314074A JP 2002121484 A JP2002121484 A JP 2002121484A
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- Prior art keywords
- paint
- weight
- evaluation test
- xylene
- coating film
- 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.)
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- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ドット印字用耐熱ペイ
ントに関し、特に、焼入処理が施される鋼材表面へのマ
ーキングに好適なドット印字用耐熱ペイントを提供する
ものであり、該耐熱ペイントは主として鉄鋼材製造工場
において利用される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-resistant paint for dot printing, and more particularly to a heat-resistant paint for dot printing suitable for marking on the surface of a steel material to be quenched. Is mainly used in steel manufacturing plants.
【０００２】[0002]
【従来の技術】周知のとおり、鉄鋼材製造工場や自動車
製造工場などにおいては、鋼材（例えば、鉄板）の表面
に材質・用途を表示する文字・記号や加工位置を指示す
るラインがドット印字装置を用いてマーキングされてい
る。2. Description of the Related Art As is well known, in a steel material manufacturing plant, an automobile manufacturing plant, etc., a dot printing device is provided on a surface of a steel material (for example, an iron plate) with a character / symbol indicating a material / use and a line indicating a processing position. It is marked using.
【０００３】前記ドット印字装置としては、口径０．１
０〜０．２５mmφの吐出ノズルが複数個配置されてお
り、該複数個のノズルの開閉を制御することにより、１
５〜３０cpの粘度に調整されたペイントをドット状に断
続して吐出させて所要の文字・記号やラインを描く（マ
ーキングする）形式のものが汎用されており、該ペイン
トには、例えば特許第２９２０３６８号公報に開示され
ている無機着色顔料５〜１０重量％とエチルセルロース
樹脂、アセチルブチルセルロース樹脂、ヒドロキシプロ
ピルセルロース樹脂及び熱可塑性アクリル樹脂から選ば
れる被膜形成樹脂５〜１０重量％と前記被膜形成樹脂の
溶解性が良い沸点８０℃未満の高揮発性有機溶剤５〜１
５重量％と単独では前記被膜形成樹脂の溶解性が悪いか
或いは該樹脂を溶解しない沸点８０℃を越える中揮発性
有機溶剤４５〜７５重量％と前記被膜形成樹脂の溶解性
が良い沸点１２０℃を越える低揮発性有機溶剤１０〜２
０重量％とからなりドット印字装置用ペイントが使用さ
れている。[0003] The dot printing apparatus has a diameter of 0.1.
A plurality of discharge nozzles of 0 to 0.25 mmφ are arranged, and by controlling the opening and closing of the plurality of nozzles, 1
Paints adjusted to a viscosity of 5 to 30 cp are intermittently ejected in the form of dots to draw (mark) the required characters / symbols and lines. 5-20% by weight of an inorganic coloring pigment disclosed in JP-A-2920368, 5-10% by weight of a film-forming resin selected from ethylcellulose resin, acetylbutylcellulose resin, hydroxypropylcellulose resin and thermoplastic acrylic resin, and the film-forming resin Highly volatile organic solvent having a boiling point of less than 80 ° C.
5% by weight alone or poor solubility of the film-forming resin or 45-75% by weight of a medium volatile organic solvent having a boiling point exceeding 80 ° C. which does not dissolve the resin and a good boiling point of 120 ° C. Low volatile organic solvent exceeding 10-2
0% by weight, paint for a dot printing device is used.
【０００４】また、鋼材の製造工程の内に焼入処理があ
り、該処理においては、鋼材を焼入炉にて約８９０〜９
３０℃に加熱し、焼入炉から取り出した後、速やかに水
冷するという作業が行われていることもよく知られてい
る。A quenching process is included in the steel material manufacturing process. In this process, the steel material is quenched in a quenching furnace at about 890-9.
It is also well known that an operation of heating to 30 ° C., taking out from a quenching furnace, and immediately cooling with water is performed.
【０００５】なお、鋼材が鉄板である場合には、通常、
焼入炉から出た鋼板をテーブルで送りこみ上下のロール
にて該鉄板をはさんで連続的に移送させながら多数のス
プレーパイプから出る噴水で冷却するローラクエンチ装
置が用いられている。[0005] When the steel material is an iron plate, usually,
A roller quench apparatus is used in which a steel sheet discharged from a quenching furnace is fed by a table, and is cooled by fountains from a number of spray pipes while continuously transferring the steel sheet between upper and lower rolls.
【０００６】また、セラミックス粉末、アルミニウム粉
末、ガラス質粉末等が配合されている各種耐熱ペイント
が市販されている。Various heat-resistant paints containing a ceramic powder, an aluminum powder, a vitreous powder and the like are commercially available.
【０００７】[0007]
【発明が解決しようとする課題】前記焼入処理が施され
る鋼材には、約８９０〜９３０℃の高温加熱状態からの
水冷という苛酷な温度変化が加えられるため、該焼入処
理以前に前記ドット印字装置を用いてマーキングされて
いる文字・記号やラインが剥れてしまうことが多いとい
う問題点がある。The steel material subjected to the quenching treatment undergoes a severe temperature change of water cooling from a high temperature heating state of about 890 to 930 ° C. There is a problem that characters / symbols and lines marked using a dot printing device often peel off.
【０００８】しかも、前記ローラクエンチ装置によって
水冷すると、鉄板とロールとの接触により、マーキング
されている文字・記号やラインが剥れてしまうことが多
いという問題点もある。Further, when the roller quench device is used for water cooling, there is also a problem that marked characters, symbols and lines are often peeled off due to contact between the iron plate and the roll.
【０００９】また、セラミックス粉末、アルミニウム粉
末、ガラス質粉末等を配合した市販の各種耐熱ペイント
は、いずれも高粘度のものである（前記粉末を安定させ
る必要上、高粘度に調製されているものと推定される）
ため、前記吐出ノズルが目詰りしてしまうので、前記形
式のドット印字装置には適用できず、さらに、本発明者
の試験結果によれば形成される塗膜が非常に硬いので水
冷時に剥れることが多かった。Various commercially available heat-resistant paints containing a ceramic powder, an aluminum powder, a vitreous powder, etc. are all high-viscosity paints. It is estimated to be)
Therefore, since the discharge nozzle is clogged, it cannot be applied to the dot printing apparatus of the type described above. Further, according to the test results of the present inventor, since the formed coating film is very hard, it peels off when cooled with water. There were many things.
【００１０】本発明者は、前記諸問題点を解決すべく、
現在、鉄鋼材製造工場などにおいて汎用されている前記
形式のドット印字装置に適用でき、且つ、約８９０〜９
３０℃の高温加熱状態からの水冷という苛酷な温度変化
に耐え前記焼入処理を経由しても、該焼入処理以前に被
処理鋼材の表面にマーキングされている文字・記号やラ
インの剥離・脱落を可及的に抑制できる耐熱ペイントを
提供することを技術的課題として、数多くの試行錯誤的
な実験・試作を重ねた結果、本発明を完成した。The present inventor has sought to solve the above problems.
At present, it can be applied to the above-described dot printing apparatus widely used in steel material manufacturing factories and the like.
Even after withstanding the severe temperature change of water cooling from a high temperature heating state of 30 ° C. and passing through the quenching process, the characters, symbols and lines marked on the surface of the steel material to be treated before the quenching process are peeled off. As a technical problem of providing a heat-resistant paint capable of suppressing falling off as much as possible, the present invention was completed as a result of many trial-and-error experiments and trial productions.
【００１１】[0011]
【課題を解決するための手段】前記技術的課題は、次の
とおりの本発明によって達成できる。The above technical object can be achieved by the present invention as described below.
【００１２】即ち、本発明はメチルフェニル系シリコー
ン樹脂２０〜３０重量％と熱分解温度２５０℃以下のメ
タクリル酸樹脂２〜１０重量％と酸化チタン粉末１０〜
２０重量％とアセトン、トルエン及びキシレンから選ば
れる有機溶剤４０〜６０重量％とからなり、且つ、粘度
が１５〜３０cpであるドット印字用耐熱ペイントであ
る。That is, the present invention relates to a method for producing a resin comprising 20 to 30% by weight of a methylphenyl silicone resin, 2 to 10% by weight of a methacrylic acid resin having a thermal decomposition temperature of 250.degree.
A heat-resistant paint for dot printing comprising 20% by weight and 40 to 60% by weight of an organic solvent selected from acetone, toluene and xylene and having a viscosity of 15 to 30 cp.
【００１３】本発明の構成をより詳しく説明すれば、次
のとおりである。The structure of the present invention will be described in more detail as follows.
【００１４】先ず、本発明に用いている諸材料について
述べる。First, various materials used in the present invention will be described.
【００１５】本発明においては、周知のメチルフェニル
系シリコーン樹脂を用いており、該樹脂は市販品から容
易に入手でき、具体的には、シリコーンコーティング剤
ＫＲ２５５（商品名：信越化学工業株式会社製）−以
下、単に「ＫＲ２５５」という−、ストレートシリコー
ンレジンＫＲ２７１（商品名：信越化学工業株式会社
製）−以下、単に「ＫＲ２７１」という−、ストレート
シリコーンレジンＫＲ３００（商品名：信越化学工業株
式会社製）−以下、単に「ＫＲ３００」という−、スト
レートシリコーンレジンＫＲ３１１（商品名：信越化学
工業株式会社製）−以下、単に「ＫＲ３１１」という
−、ストレートシリコーンレジンＳＨ８０５（商品名：
東レ・ダウコーニング株式会社製）−以下、単に「ＳＨ
８０５」という−、ストレートシリコーンレジンＳＨ８
４０（商品名：東レ・ダウコーニング株式会社製）−以
下、単に「ＳＨ８４０」という−等が挙げられる。In the present invention, a well-known methylphenyl-based silicone resin is used, and the resin can be easily obtained from commercial products. Specifically, a silicone coating agent KR255 (trade name: manufactured by Shin-Etsu Chemical Co., Ltd.) -Straight silicone resin KR271 (trade name: manufactured by Shin-Etsu Chemical Co., Ltd.)-Straight silicone resin KR300 (trade name: Shin-Etsu Chemical Co., Ltd.) -Straight silicone resin KR311 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.)-Straight silicone resin SH805 (trade name: KR311)
Toray Dow Corning Co., Ltd.)
805 "-straight silicone resin SH8
40 (trade name: manufactured by Dow Corning Toray Co., Ltd.)-hereinafter simply referred to as "SH840".
【００１６】なお、前記各市販品は、取扱い面から、い
ずれも樹脂を有機溶剤に溶解した状態で販売されてお
り、ＫＲ２５５の処方は樹脂分５０重量％・トルエン２
０重量％・キシレン３０重量％であり、ＫＲ２７１の処
方は樹脂分５０重量％・キシレン５０重量％であり、Ｋ
Ｒ３００の処方は樹脂分５０重量％・キシレン５０重量
％であり、ＫＲ３１１の処方は樹脂分６０重量％・キシ
レン４０重量％であり、ＳＨ８０５の処方は樹脂分５０
重量％・キシレン５０重量％であり、ＳＨ８４０の処方
は樹脂分６０重量％・トルエン４０重量％であるから、
これらを用いる場合には、各処方における樹脂分と各有
機溶剤との割合を勘案し、本発明において規定する特定
配合割合となるように所要量のアセトン、トルエン及び
キシレンから選ばれる有機溶剤を加える必要がある。Each of the above-mentioned commercially available products is sold in a state in which the resin is dissolved in an organic solvent in terms of handling, and the formulation of KR255 is such that the resin content is 50% by weight in toluene 2%.
0% by weight and 30% by weight of xylene. The formulation of KR271 is 50% by weight of resin and 50% by weight of xylene.
The formulation of R300 is 50% by weight of resin content and 50% by weight of xylene, the formulation of KR311 is 60% by weight of resin content and 40% by weight of xylene, and the formulation of SH805 is 50% by weight of resin content.
% By weight and 50% by weight of xylene, and the formulation of SH840 is 60% by weight of resin and 40% by weight of toluene.
When these are used, a necessary amount of an organic solvent selected from acetone, toluene and xylene is added so as to have a specific mixing ratio specified in the present invention, in consideration of the ratio of the resin component and each organic solvent in each formulation. There is a need.
【００１７】本発明においては、周知の熱分解温度２５
０℃以下のメタクリル酸樹脂を用いており、該樹脂も市
販品から容易に入手でき、具体的には、ダイヤナールＢ
Ｒ１０１（商品名：三菱レーヨン株式会社製：熱分解温
度約２１０℃）−以下、単に「ＢＲ１０１」という−や
ダイヤナールＢＲ１０２（商品名：三菱レーヨン株式会
社製：熱分解温度約２２０℃）−以下、単に「ＢＲ１０
２」という−等が挙げられる。In the present invention, the known thermal decomposition temperature 25
A methacrylic acid resin having a temperature of 0 ° C. or less is used, and the resin is also easily available from commercial products.
R101 (trade name: manufactured by Mitsubishi Rayon Co., Ltd .: pyrolysis temperature: about 210 ° C.)-hereinafter simply referred to as “BR101”-and Diamond BR102 (trade name: manufactured by Mitsubishi Rayon Co., Ltd .: pyrolysis temperature: about 220 ° C.)- , Simply "BR10
2 "and the like.
【００１８】前記各熱分解温度は、パーキンエルマー製
ＴＧＳ−１型熱天秤を用い、試量２mgを乾燥空気中雰囲
気において２００℃まで１０℃／分・２００℃以上２．
５℃／分の昇温速度条件により加熱して測定した値であ
る。The thermal decomposition temperature was determined by using a TGS-1 thermobalance manufactured by PerkinElmer and measuring 2 mg in a dry air atmosphere up to 200 ° C at 10 ° C / min.
This is a value measured by heating under the condition of a heating rate of 5 ° C./min.
【００１９】なお、熱分解温度２５０℃を越えるメタク
リル酸樹脂を用いた場合には、後出「作用」の項におい
て述べる「メタクリル酸樹脂の分解・気化」現象がスム
ーズに進行しない。When a methacrylic acid resin having a thermal decomposition temperature exceeding 250 ° C. is used, the phenomenon of “decomposition and vaporization of methacrylic acid resin” described in the section of “action” described later does not proceed smoothly.
【００２０】本発明において用いる酸化チタン粉末は白
色顔料などとして用いられており、アセトン、トルエン
及びキシレンは汎用溶剤であり、いずれも市場から容易
に入手できる。The titanium oxide powder used in the present invention is used as a white pigment or the like, and acetone, toluene and xylene are general-purpose solvents, all of which can be easily obtained from the market.
【００２１】次に、本発明における前記各材料の配合割
合は重要であり、前記各特定配合割合（重量％）の範囲
外の場合には、前記形式のドット印字装置に適用できる
粘度１５〜３０cpに調整できず、また、前記の苛酷な温
度変化に耐え前記焼入れ処理を経由しても剥離・脱落し
ないドット印字塗膜が形成できない。Next, the mixing ratio of each material in the present invention is important, and if it is out of the range of each specific mixing ratio (% by weight), the viscosity which can be applied to the dot printing apparatus of the above type is 15 to 30 cp. In addition, it is impossible to form a dot print coating film which does not exfoliate or fall off even after passing through the quenching process, withstanding the severe temperature change described above.
【００２２】なお、本発明においてはペイントの粘度
が、１５cp未満の場合には安定性が悪くなって貯蔵時に
沈降・凝集が生じ易く、さらに、マーキング時に下地が
透けることがあり、また、３０cpを越える場合には吐出
ノズルに目詰りが発生し易くなる。In the present invention, if the viscosity of the paint is less than 15 cp, the stability is deteriorated, so that sedimentation / aggregation is apt to occur during storage, and the base material may be transparent at the time of marking. If it exceeds, clogging of the discharge nozzle is likely to occur.
【００２３】前記諸材料の配合割合の内、特に重要なも
のは、前記メチルフェニル系シリコーン樹脂及び前記熱
分解温度２５０℃以下のメタクリル酸樹脂の各配合割合
であり、前者が２０重量％未満で後者が２重量％未満の
場合には、後出「作用」の項において述べる「微小な島
状塗膜」が形成できず、また、前者が３０重量％を越え
後者が１０重量％を越えると粘度が高くなりすぎ、所要
粘度のペイントを得ることができなくなる。Of the compounding ratios of the various materials, particularly important ones are the mixing ratios of the methylphenyl silicone resin and the methacrylic acid resin having a thermal decomposition temperature of 250 ° C. or less, the former being less than 20% by weight. If the content of the latter is less than 2% by weight, the "fine island-like coating film" described in the section of "action" cannot be formed, and if the former exceeds 30% by weight and the latter exceeds 10% by weight. The viscosity becomes too high, so that a paint having a required viscosity cannot be obtained.
【００２４】次に、本発明に係るドット印字用耐熱ペイ
ントの製造はきわめて簡易であり、前記各材料を、それ
ぞれ所定量秤取し、秤取した前記メタクリル酸樹脂、秤
取した前記酸化チタン粉末及び秤取した前記有機溶剤を
容器（例えばステンレス製タンク）に投入し、撹拌機
（例えば電動ミキサー）を用いて撹拌した後、該容器に
秤取した前記メチルフェニル系シリコーン樹脂（樹脂が
有機溶剤に溶解されている前記市販品）を投入し、撹拌
機（前出）を用いて撹拌して該各材料を分散・溶解させ
れば目的とするドット印字用耐熱ペイントが得られる。
なお、当該容器を５０〜７０℃程度に加温すれば、分散
・溶解をスムーズに進行させることができる。Next, the production of the heat-resistant paint for dot printing according to the present invention is extremely simple. A predetermined amount of each of the above-mentioned materials is weighed, the methacrylic acid resin is weighed, and the titanium oxide powder is weighed. And the weighed organic solvent is put into a container (for example, a stainless steel tank), stirred using a stirrer (for example, an electric mixer), and then weighed into the container, and the methylphenyl silicone resin (the resin is an organic solvent) is weighed. The above-mentioned commercially available product dissolved in the above is charged and stirred using a stirrer (discussed above) to disperse and dissolve each of the materials, whereby the intended heat-resistant paint for dot printing can be obtained.
In addition, if the said container is heated to about 50-70 degreeC, dispersion and dissolution can be advanced smoothly.
【００２５】次に、本発明に係るドット印字用耐熱ペイ
ントの使用法は、鉄鋼材製造工場などにおいて汎用され
ている前記形式のドット印字装置に用いられている従来
のペイントの使用法と同じである。Next, the method of using the heat-resistant paint for dot printing according to the present invention is the same as the method of using the conventional paint used in the above-described dot printing apparatus widely used in steel material manufacturing factories and the like. is there.
【００２６】[0026]
【発明の実施の形態】本発明の代表的な実施の形態は次
のとおりである。DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment of the present invention is as follows.
【００２７】１．ペイントの調製1. Preparation of paint
【００２８】ＢＲ１０１（前出）５０ｇ、酸化チタン粉
末（平均粒子径０．３μｍ）１５０ｇ及びアセトン３０
０ｇをステンレスタンクに投入し、電動ミキサーにて充
分撹拌した後、該タンクにＫＲ２５５（前出）−樹脂分
５０重量％・トルエン２０重量％・キシレン３０重量％
−５００ｇを投入し、電動ミキサーにて充分撹拌してド
ット印字用耐熱ペイントを得た。50 g of BR101 (described above), 150 g of titanium oxide powder (average particle diameter: 0.3 μm) and 30 g of acetone
After charging 0 g into a stainless steel tank and sufficiently stirring with an electric mixer, KR255 (described above) —resin content: 50% by weight, toluene: 20% by weight, xylene: 30% by weight
-500 g was added, and the mixture was sufficiently stirred with an electric mixer to obtain a heat-resistant paint for dot printing.
【００２９】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（アセト
ン、トルエン及びキシレンの合計量）は５５０ｇであ
る。The amount of the methylphenyl silicone resin in the paint obtained here was 250 g, and the amount of the organic solvent (total amount of acetone, toluene and xylene) was 550 g.
【００３０】ここに得たペイントの粘度を振動式粘度計
（ＹＡＭＡＫＯ・ＶＩＳＣＯＭＡＴＥ・ＶＭ−ＩＡ：商
品名・山一電気工業株式会社製）によって測定したとこ
ろ２０cpであった。The viscosity of the paint thus obtained was measured by a vibrating viscometer (YAMAKO VISCOMATE VM-IA: trade name, manufactured by Yamaichi Electric Industry Co., Ltd.) and found to be 20 cp.
【００３１】２．ペイントの評価2. Paint rating
【００３２】ドット印字塗膜評価試験：ここに得たペイ
ントを用い、口径０．２０mmφの吐出ノズルを複数個備
えたドット印字装置（ＴＰ−３０００：商品記号・マー
クテック株式会社製：現在、鉄鋼材製造工場において稼
働している装置と同じもの）によってテストピース（厚
さ６．０mm，７０×１００mm，ＪＩＳ−Ｇ−３１４１）
表面にドット径３mmにてドット印字し、ドット印字塗膜
を形成した。なお、吐出ノズル口とテストピース表面と
の間隔は３cmに設定した。Dot printing coating film evaluation test: A dot printing device (TP-3000: product symbol, manufactured by Marktec Co., Ltd .: currently steel) using the paint obtained here and provided with a plurality of ejection nozzles having a diameter of 0.20 mmφ Test piece (thickness: 6.0 mm, 70 × 100 mm, JIS-G-3141)
Dot printing was performed on the surface with a dot diameter of 3 mm to form a dot printing coating film. The distance between the discharge nozzle port and the test piece surface was set to 3 cm.
【００３３】次に、前記ドット印字塗膜を形成したテス
トピースを、電気炉に入れてＮ2 雰囲気・９３０℃で１
０分間保持し、電気炉から取り出した直後に水中に投入
して急冷した後、水中から取り出したテストピース表面
のドット印字塗膜の状態を目視にて観察し、次の基準に
よって評価したところ「◎」であり、またドット印字塗
膜面を指先で強く擦ったが剥れなかった。Next, the test piece on which the dot print coating film was formed was placed in an electric furnace and placed in an N 2 atmosphere at 930 ° C. for 1 hour.
After holding for 0 minute, immediately after being taken out of the electric furnace, and put into water and quenched, the state of the dot print coating film on the surface of the test piece taken out from the water was visually observed and evaluated according to the following criteria. ◎ ”, and the dot-printed coating film surface was strongly rubbed with a fingertip, but did not peel off.
【００３４】評価基準は、「全てのドットが剥離してい
ない状態」を「◎」、「ドットの一部分に剥離がある状
態」を「○」、「剥離によるドット抜けがある状態」を
「△」、「全てのドットが剥離している状態」を「×」
とした。The evaluation criteria are "、" for "the state where all the dots are not peeled off", "○" for "the state where a part of the dots are peeled", and "△" for "the state where the dots are missing due to peeling". "", "State where all dots are peeled" is "x"
And
【００３５】ペイント安定性評価試験：ここに得たペイ
ント１００ｇを透明ガラスビーカーに入れ、室温で１０
日間放置した後、沈降・凝集の有無を目視にて観察し、
次の基準によって評価したところ「○」であった。Paint stability evaluation test: 100 g of the paint thus obtained was placed in a transparent glass beaker, and 10 g at room temperature.
After standing for days, the presence or absence of sedimentation / aggregation is visually observed,
When evaluated according to the following criteria, it was "O".
【００３６】評価基準は、「沈降・凝集が認められなか
った場合」を「○」、「沈降・凝集が認められた場合」
を「×」とした。The evaluation criteria were as follows: “No sedimentation / aggregation was observed”, “O”, “Sedimentation / aggregation was observed”.
Indicates “×”.
【００３７】[0037]
【作用】本発明に係るドット印字用耐熱ペイントを用い
て形成したドット印字塗膜は、前記発明の実施の形態及
び後出各実施例に見られるとおり、９３０℃の高温加熱
状態からの水冷という苛酷な温度変化が加えられても剥
れず、また、水冷後に表面を擦っても剥れないが、これ
は、ペイント処方中の前記メチルフェニル系シリコーン
樹脂と前記熱分解温度２５０℃以下のメタクリル酸樹脂
とは相溶性がないため、ドット印字された各ドット印字
塗膜は乾燥時に微小な島状の塗膜となり、この微小な島
状の塗膜は面状ではなく点状（島状）で鋼材表面に密着
しているので該鋼材に加わる加熱時・冷却時の熱膨張率
の変化に耐えることができるという作用によるものと推
定され、また、微小な島状塗膜中の前記熱分解温度２５
０℃以下のメタクリル酸樹脂は鋼材の昇温時において分
解・気化してしまって残査が残らないから、該メタクリ
ル酸樹脂が気化した後に熱分解する該塗膜中の前記メチ
ルフェニル系シリコーン樹脂のメチル基及びフェニル基
と当該塗膜中の酸化チタン粉末との間のＳｉ−Ｏ−結合
が形成し易くなるので、熱に対しより安定な構造を採る
ことができるという作用によるものと推定される。The dot printing coating film formed by using the heat-resistant paint for dot printing according to the present invention is, as seen in the embodiment of the present invention and each of the following examples, water-cooled from a high temperature heating state of 930 ° C. It does not peel off even when subjected to severe temperature changes, nor does it peel off when rubbing the surface after cooling with water. This is because the methylphenyl silicone resin in the paint formulation and the methacrylic acid having a thermal decomposition temperature of 250 ° C. or lower are used. Since there is no compatibility with the resin, each dot-printed coating film printed with dots becomes a fine island-shaped coating film when dried, and this fine island-shaped coating film is not a surface but a dot (island). It is presumed to be due to the effect of being able to withstand the change in the coefficient of thermal expansion during heating and cooling applied to the steel material because it is in close contact with the steel material surface, and the thermal decomposition temperature in the fine island-like coating film. 25
Since the methacrylic acid resin having a temperature of 0 ° C. or less is decomposed and vaporized when the temperature of the steel material rises and no residue is left, the methylphenyl silicone resin in the coating film which thermally decomposes after the methacrylic acid resin is vaporized. This is presumed to be due to the fact that a Si-O-bond between the methyl group and the phenyl group of the coating film and the titanium oxide powder in the coating film is easily formed, so that a structure more stable to heat can be taken. You.
【００３８】[0038]
【実施例】以下に、実施例及び比較例を挙げる。EXAMPLES Examples and comparative examples will be described below.
【００３９】実施例１：ＢＲ１０１（前出）５０ｇ、酸
化チタン粉末（前出）１５０ｇ及びトルエン４００ｇを
ステンレスタンクに投入し、電動ミキサーにて充分撹拌
した後、該タンクにＫＲ２７１（前出）−樹脂分５０重
量％・キシレン５０重量％−４００ｇを投入し、電動ミ
キサーにて充分撹拌してドット印字用耐熱ペイントを得
た。Example 1: 50 g of BR101 (described above), 150 g of titanium oxide powder (described above) and 400 g of toluene were charged into a stainless steel tank, and sufficiently stirred with an electric mixer. Then, KR271 (described above) was added to the tank. A resin content of 50% by weight and xylene of 50% by weight-400 g were charged and sufficiently stirred with an electric mixer to obtain a heat-resistant paint for dot printing.
【００４０】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２００ｇ、有機溶剤量（トルエ
ン及びキシレンの合計量）は６００ｇである。The amount of the methylphenyl-based silicone resin in the paint thus obtained was 200 g, and the amount of the organic solvent (total amount of toluene and xylene) was 600 g.
【００４１】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ３０cp
であった。When the viscosity of the paint obtained was measured by the measuring method in the embodiment of the present invention, it was 30 cp.
Met.
【００４２】ここに得たペイントの評価を、前記発明の
実施の形態におけるドット印字塗膜評価試験及びその評
価基準並びにペイント安定性評価試験及びその評価基準
とそれぞれ同一条件にて行った結果は、次のとおりであ
る。The results of the evaluation of the obtained paint under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention are as follows. It is as follows.
【００４３】ドット印字塗膜評価試験結果は「○」、ペ
イント安定性評価試験結果も「○」であった。The results of the dot printing coating film evaluation test were "O", and the results of the paint stability evaluation test were also "O".
【００４４】実施例２：ＢＲ１０１（前出）５０ｇ、酸
化チタン粉末（前出）１５０ｇ及びアセトン３００ｇを
ステンレスタンクに投入し、電動ミキサーにて充分撹拌
した後、該タンクにＫＲ３００（前出）−樹脂分５０重
量％・キシレン５０重量％−５００ｇを投入し、電動ミ
キサーにて充分撹拌してドット印字用耐熱ペイントを得
た。Example 2: 50 g of BR101 (described above), 150 g of titanium oxide powder (described above), and 300 g of acetone were charged into a stainless steel tank, and sufficiently stirred with an electric mixer. A resin content of 50% by weight and xylene of 50% by weight-500 g were charged and sufficiently stirred with an electric mixer to obtain a heat-resistant paint for dot printing.
【００４５】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（アセト
ン及びキシレンの合計量）は５５０ｇである。The amount of the methylphenyl silicone resin in the paint thus obtained was 250 g, and the amount of the organic solvent (total amount of acetone and xylene) was 550 g.
【００４６】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ１５cp
であった。The viscosity of the paint thus obtained was measured by the measuring method according to the embodiment of the present invention.
Met.
【００４７】ここに得たペイントの評価を、前記発明の
実施の形態におけるドット印字塗膜評価試験及びその評
価基準並びにペイント安定性評価試験及びその評価基準
とそれぞれ同一条件にて行った結果は、次のとおりであ
る。The results of the evaluation of the obtained paint under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention are as follows. It is as follows.
【００４８】ドット印字塗膜評価試験結果は「◎」、ペ
イント安定性評価試験結果は「○」であった。The results of the dot printing coating film evaluation test were "A", and the results of the paint stability evaluation test were "A".
【００４９】実施例３：ＢＲ１０１（前出）５０ｇ、酸
化チタン粉末（前出）１５０ｇ及びトルエン３００ｇを
ステンレスタンクに投入し、電動ミキサーにて充分撹拌
した後、該タンクにＫＲ３１１（前出）−樹脂分６０重
量％・キシレン４０重量％−５００ｇを投入し、電動ミ
キサーにて充分撹拌してドット印字用耐熱ペイントを得
た。Example 3: 50 g of BR101 (described above), 150 g of titanium oxide powder (described above) and 300 g of toluene were charged into a stainless steel tank, and sufficiently stirred with an electric mixer. Then, KR311 (described above) was added to the tank. A resin content of 60% by weight and a xylene of 40% by weight-500 g were charged and sufficiently stirred with an electric mixer to obtain a heat-resistant paint for dot printing.
【００５０】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は３００ｇ、有機溶剤量（トルエ
ン及びキシレンの合計量）は５００ｇである。The amount of the methylphenyl-based silicone resin in the paint thus obtained was 300 g, and the amount of the organic solvent (total amount of toluene and xylene) was 500 g.
【００５１】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ１６cp
であった。The viscosity of the obtained paint was measured by the measuring method in the embodiment of the present invention.
Met.
【００５２】ここに得たペイントの評価を、前記発明の
実施の形態におけるドット印字塗膜評価試験及びその評
価基準並びにペイント安定性評価試験及びその評価基準
とそれぞれ同一条件にて行った結果は、次のとおりであ
る。The results of the evaluation of the obtained paint under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention are as follows. It is as follows.
【００５３】ドット印字塗膜評価試験結果は「◎」、ペ
イント安定性評価試験結果は「○」であった。The result of the dot printing coating film evaluation test was “◎”, and the result of the paint stability evaluation test was “○”.
【００５４】実施例４：ＢＲ１０１（前出）５０ｇ、酸
化チタン粉末（前出）１５０ｇ、アセトン１５０ｇ及び
トルエン１５０ｇをステンレスタンクに投入し、電動ミ
キサーにて充分撹拌した後、該タンクにＳＨ８０５（前
出）−樹脂分５０重量％・キシレン５０重量％−５００
ｇを投入し、電動ミキサーにて充分撹拌してドット印字
用耐熱ペイントを得た。Example 4: 50 g of BR101 (described above), 150 g of titanium oxide powder (described above), 150 g of acetone and 150 g of toluene were charged into a stainless steel tank, and sufficiently stirred with an electric mixer. Source) -resin content 50% by weight xylene 50% by weight-500
g, and sufficiently stirred with an electric mixer to obtain a heat-resistant paint for dot printing.
【００５５】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（アセト
ン、トルエン及びキシレンの合計量）は５５０ｇであ
る。The amount of the methylphenyl silicone resin in the paint thus obtained was 250 g, and the amount of the organic solvent (total amount of acetone, toluene and xylene) was 550 g.
【００５６】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ２７cp
であった。The viscosity of the paint obtained was measured by the measuring method in the embodiment of the present invention.
Met.
【００５７】ここに得たペイントの評価を、前記発明の
実施の形態におけるドット印字塗膜評価試験及びその評
価基準並びにペイント安定性評価試験及びその評価基準
とそれぞれ同一条件にて行った結果は、次のとおりであ
る。The results of the evaluation of the obtained paint under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention are as follows. It is as follows.
【００５８】ドット印字塗膜評価試験結果は「○」、ペ
イント安定性評価試験結果も「○」であった。The results of the dot printing coating film evaluation test were “○”, and the results of the paint stability evaluation test were also “○”.
【００５９】実施例５：ＢＲ１０２（前出）２０ｇ、酸
化チタン粉末（前出）１５０ｇ及びアセトン３３０ｇを
ステンレスタンクに投入し、電動ミキサーにて充分撹拌
した後、該タンクにＫＲ２５５（前出）−樹脂分５０重
量％・トルエン２０重量％・キシレン３０重量％−５０
０ｇを投入し、電動ミキサーにて充分撹拌してドット印
字用耐熱ペイントを得た。Example 5 20 g of BR102 (described above), 150 g of titanium oxide powder (described above) and 330 g of acetone were charged into a stainless steel tank, and sufficiently stirred with an electric mixer. Then, KR255 (described above) was added to the tank. 50% by weight of resin, 20% by weight of toluene, 30% by weight of xylene-50
After adding 0 g, the mixture was sufficiently stirred with an electric mixer to obtain a heat-resistant paint for dot printing.
【００６０】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（アセト
ン、トルエン及びキシレンの合計量）は５８０ｇであ
る。The amount of the methylphenyl silicone resin in the paint obtained here was 250 g, and the amount of the organic solvent (total amount of acetone, toluene and xylene) was 580 g.
【００６１】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ１８cp
であった。The viscosity of the paint thus obtained was measured by the measuring method according to the embodiment of the present invention.
Met.
【００６２】ここに得たペイントの評価を、前記発明の
実施の形態におけるドット印字塗膜評価試験及びその評
価基準並びにペイント安定性評価試験及びその評価基準
とそれぞれ同一条件にて行った結果は、次のとおりであ
る。The results of the evaluation of the obtained paint under the same conditions as those of the dot printed coating film evaluation test and the evaluation criteria and the paint stability evaluation test and the evaluation criteria in the embodiment of the invention are as follows. It is as follows.
【００６３】ドット印字塗膜評価試験結果は「○」、ペ
イント安定性評価試験結果も「○」であった。The results of the dot printing coating film evaluation test were "A", and the results of the paint stability evaluation test were also "A".
【００６４】実施例６：ＢＲ１０２（前出）１００ｇ、
酸化チタン粉末（前出）１５０ｇ及びトルエン２５０ｇ
をステンレスタンクに投入し、電動ミキサーにて充分撹
拌した後、該タンクにＫＲ２５５（前出）−樹脂分５０
重量％・トルエン２０重量％・キシレン３０重量％−５
００ｇを投入し、電動ミキサーにて充分撹拌してドット
印字用耐熱ペイントを得た。Example 6: BR102 (supra) 100 g,
150 g of titanium oxide powder (described above) and 250 g of toluene
Is charged into a stainless steel tank, and sufficiently stirred with an electric mixer.
% By weight / 20% by weight of toluene / 30% by weight of xylene-5
Then, the mixture was sufficiently stirred with an electric mixer to obtain a heat-resistant paint for dot printing.
【００６５】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（トルエ
ン及びキシレンの合計量）は５００ｇである。The amount of the methylphenyl silicone resin in the paint obtained here was 250 g, and the amount of the organic solvent (total amount of toluene and xylene) was 500 g.
【００６６】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ２３cp
であった。The viscosity of the paint thus obtained was measured by the measuring method in the embodiment of the present invention.
Met.
【００６７】ここに得たペイントの評価を、前記発明の
実施の形態におけるドット印字塗膜評価試験及びその評
価基準並びにペイント安定性評価試験及びその評価基準
とそれぞれ同一条件にて行った結果は、次のとおりであ
る。The results of the evaluation of the obtained paint under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention are as follows. It is as follows.
【００６８】ドット印字塗膜評価試験結果は「◎」、ペ
イント安定性評価試験結果は「○」であった。The dot print coating film evaluation test result was "A", and the paint stability evaluation test result was "O".
【００６９】実施例７：ＢＲ１０２（前出）５０ｇ、酸
化チタン粉末（前出）１００ｇ及びアセトン３５０ｇを
ステンレスタンクに投入し、電動ミキサーにて充分撹拌
した後、該タンクにＫＲ２７１（前出）−樹脂分５０重
量％・キシレン５０重量％−５００ｇを投入し、電動ミ
キサーにて充分撹拌してドット印字用耐熱ペイントを得
た。Example 7: 50 g of BR102 (described above), 100 g of titanium oxide powder (described above), and 350 g of acetone were charged into a stainless steel tank, and sufficiently stirred with an electric mixer. Then, KR271 (described above) was added to the tank. A resin content of 50% by weight and xylene of 50% by weight-500 g were charged and sufficiently stirred with an electric mixer to obtain a heat-resistant paint for dot printing.
【００７０】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（アセト
ン及びキシレンの合計量）は６００ｇである。The amount of the methylphenyl silicone resin in the paint obtained here was 250 g, and the amount of the organic solvent (total amount of acetone and xylene) was 600 g.
【００７１】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ２９cp
であった。The viscosity of the paint thus obtained was measured by the measuring method according to the embodiment of the present invention.
Met.
【００７２】ここに得たペイントの評価を、前記発明の
実施の形態におけるドット印字塗膜評価試験及びその評
価基準並びにペイント安定性評価試験及びその評価基準
とそれぞれ同一条件にて行った結果は、次のとおりであ
る。The results of the evaluation of the paint obtained here were evaluated under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention, respectively. It is as follows.
【００７３】ドット印字塗膜評価試験結果は「○」、ペ
イント安定性評価試験結果も「○」であった。The results of the dot printed coating film evaluation test were “○”, and the results of the paint stability evaluation test were also “○”.
【００７４】実施例８：ＢＲ１０２（前出）５０ｇ、酸
化チタン粉末（前出）２００ｇ及びトルエン２５０ｇを
ステンレスタンクに投入し、電動ミキサーにて充分撹拌
した後、該タンクにＫＲ３００（前出）−樹脂分５０重
量％・キシレン５０重量％−５００ｇを投入し、電動ミ
キサーにて充分撹拌してドット印字用耐熱ペイントを得
た。Example 8: 50 g of BR102 (described above), 200 g of titanium oxide powder (described above) and 250 g of toluene were charged into a stainless steel tank, and sufficiently stirred with an electric mixer. Then, KR300 (described above) was added to the tank. A resin content of 50% by weight and xylene of 50% by weight-500 g were charged and sufficiently stirred with an electric mixer to obtain a heat-resistant paint for dot printing.
【００７５】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（トルエ
ン及びキシレンの合計量）は５００ｇである。The amount of the methylphenyl silicone resin in the paint thus obtained was 250 g, and the amount of the organic solvent (total amount of toluene and xylene) was 500 g.
【００７６】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ１７cp
であった。The viscosity of the paint thus obtained was measured by the measuring method in the embodiment of the present invention.
Met.
【００７７】ここに得たペイントの評価を、前記発明の
実施の形態におけるドット印字塗膜評価試験及びその評
価基準並びにペイント安定性評価試験及びその評価基準
とそれぞれ同一条件にて行った結果は、次のとおりであ
る。The results of the evaluation of the obtained paint under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention are as follows. It is as follows.
【００７８】ドット印字塗膜評価試験結果は「◎」、ペ
イント安定性評価試験結果は「○」はあった。The dot print coating film evaluation test result was "A", and the paint stability evaluation test result was "O".
【００７９】実施例９：ＢＲ１０２（前出）５０ｇ、酸
化チタン粉末（前出）１５０ｇ及びアセトン３５０ｇを
ステンレスタンクに投入し、電動ミキサーにて充分撹拌
した後、該タンクにＫＲ３１１（前出）−樹脂分６０重
量％・キシレン４０重量％−４５０ｇを投入し、電動ミ
キサーにて充分撹拌してドット印字用耐熱ペイントを得
た。Example 9: 50 g of BR102 (described above), 150 g of titanium oxide powder (described above) and 350 g of acetone were charged into a stainless steel tank, sufficiently stirred with an electric mixer, and KR311 (described above) was added to the tank. A resin content of 60% by weight and xylene of 40% by weight-450 g were charged and sufficiently stirred with an electric mixer to obtain a heat-resistant paint for dot printing.
【００８０】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２７０ｇ、有機溶剤量（アセト
ン及びキシレンの合計量）は５３０ｇである。The amount of the methylphenyl silicone resin in the paint obtained here was 270 g, and the amount of the organic solvent (total amount of acetone and xylene) was 530 g.
【００８１】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ１５cp
であった。The viscosity of the paint thus obtained was measured by the measuring method according to the embodiment of the present invention.
Met.
【００８２】ここに得たペイントの評価を、前記発明の
実施の形態におけるドット印字塗膜評価試験及びその評
価基準並びにペイント安定性評価試験及びその評価基準
とそれぞれ同一条件にて行った結果は、次のとおりであ
る。The results of the evaluation of the obtained paint under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention are as follows. It is as follows.
【００８３】ドット印字塗膜評価試験結果は「◎」、ペ
イント安定性評価試験結果は「○」であった。The result of the dot print coating film evaluation test was “◎”, and the result of paint stability evaluation test was “○”.
【００８４】実施例１０：ＢＲ１０２（前出）５０ｇ、
酸化チタン粉末（前出）１５０ｇ及びトルエン２００ｇ
をステンレスタンクに投入し、電動ミキサーにて充分撹
拌した後、該タンクにＳＨ８０５（前出）−樹脂分５０
重量％・キシレン５０重量％−６００ｇを投入し、電動
ミキサーにて充分撹拌してドット印字用耐熱ペイントを
得た。Example 10: BR102 (supra) 50 g,
150 g of titanium oxide powder (described above) and 200 g of toluene
Was put into a stainless steel tank, and sufficiently stirred with an electric mixer.
% By weight and 50% by weight of xylene-600 g were added thereto and sufficiently stirred by an electric mixer to obtain a heat-resistant paint for dot printing.
【００８５】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は３００ｇ、有機溶剤量（トルエ
ン及びキシレンの合計量）は５００ｇである。The amount of the methylphenyl silicone resin in the paint obtained here was 300 g, and the amount of the organic solvent (total amount of toluene and xylene) was 500 g.
【００８６】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ３０cp
であった。The viscosity of the obtained paint was measured by the measuring method in the embodiment of the present invention.
Met.
【００８７】ここに得たペイントの評価を、前記発明の
実施の形態におけるドット印字塗膜評価試験及びその評
価基準並びにペイント安定性評価試験及びその評価基準
とそれぞれ同一条件にて行った結果は、次のとおりであ
る。The results of the evaluation of the obtained paint under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention are as follows. It is as follows.
【００８８】ドット印字塗膜評価試験結果は「○」、ペ
イント安定性評価試験結果も「○」であった。The results of the dot printing coating film evaluation test were “○”, and the results of the paint stability evaluation test were also “○”.
【００８９】比較例１：ダイヤナールＢＲ８０（商品
名：三菱レーヨン株式会社製：熱分解温度約２９０℃）
１００ｇ、酸化チタン粉末（前出）１５０ｇ及びアセト
ン３００ｇをステンレスタンクに投入し、電動ミキサー
にて充分撹拌した後、該タンクにＫＲ２７１（前出）−
樹脂分５０重量％・キシレン５０重量％−４５０ｇを投
入し、電動ミキサーにて充分撹拌して比較用ペイントを
得た。Comparative Example 1: Diamond BR80 (trade name: manufactured by Mitsubishi Rayon Co., Ltd .: thermal decomposition temperature: about 290 ° C.)
100 g, 150 g of titanium oxide powder (described above) and 300 g of acetone are charged into a stainless steel tank, and sufficiently stirred with an electric mixer. Then, KR271 (described above) is added to the tank.
A resin content of 50% by weight and xylene of 50% by weight-450 g were charged and sufficiently stirred with an electric mixer to obtain a paint for comparison.
【００９０】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２００ｇ、有機溶剤量（アセト
ン及びキシレンの合計量）は５００ｇである。The amount of the methylphenyl silicone resin in the paint thus obtained was 200 g, and the amount of the organic solvent (total amount of acetone and xylene) was 500 g.
【００９１】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ３３cp
であった。The viscosity of the paint obtained was measured by the measuring method in the embodiment of the present invention.
Met.
【００９２】ここに得た比較用ペイントの評価を、前記
発明の実施の形態におけるドット印字塗膜評価試験及び
その評価基準並びにペイント安定性評価試験及びその評
価基準とそれぞれ同一条件にて行った結果は、次のとお
りである。The evaluation of the comparative paint thus obtained was carried out under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention. Is as follows.
【００９３】ドット印字塗膜評価試験結果は「×」、ペ
イント安定性評価試験結果は「○」であった。The result of the dot printing coating film evaluation test was "x", and the result of the paint stability evaluation test was "o".
【００９４】比較例２：ダイヤナールＢＲ８０（前出）
５０ｇ、酸化チタン粉末（前出）１５０ｇ及びアセトン
３００ｇをステンレスタンクに投入し、電動ミキサーに
て充分撹拌した後、該タンクにＫＲ２５５（前出）−樹
脂分５０重量％・トルエン２０重量％・キシレン３０重
量％−５００ｇを投入し、電動ミキサーにて充分撹拌し
て比較用ペイントを得た。Comparative Example 2: Dianal BR80 (supra)
50 g, 150 g of titanium oxide powder (described above) and 300 g of acetone are charged into a stainless steel tank, and sufficiently stirred with an electric mixer. Then, KR255 (described above) —resin content 50% by weight / toluene 20% by weight—xylene 30% by weight-500 g was charged and sufficiently stirred with an electric mixer to obtain a paint for comparison.
【００９５】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（アセト
ン、トルエン及びキシレンの合計量）は５５０ｇであ
る。The amount of the methylphenyl silicone resin in the paint obtained here was 250 g, and the amount of the organic solvent (total amount of acetone, toluene and xylene) was 550 g.
【００９６】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ２１cp
であった。The viscosity of the paint obtained was measured by the measuring method in the embodiment of the present invention.
Met.
【００９７】ここに得た比較用ペイントの評価を、前記
発明の実施の形態におけるドット印字塗膜評価試験及び
その評価基準並びにペイント安定性評価試験及びその評
価基準とそれぞれ同一条件にて行った結果は、次のとお
りである。The comparative paints obtained here were evaluated under the same conditions as those of the dot print coating evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard according to the embodiment of the present invention. Is as follows.
【００９８】ドット印字塗膜評価試験結果は「×」、ペ
イント安定性評価試験結果は「○」であった。The dot print coating film evaluation test result was "x", and the paint stability evaluation test result was "o".
【００９９】比較例３：ＢＲ１０２（前出）５０ｇ、酸
化チタン粉末（前出）５０ｇ及びアセトン４００ｇをス
テンレスタンクに投入し、電動ミキサーにて充分撹拌し
た後、該タンクにＫＲ３００（前出）−樹脂分５０重量
％・キシレン５０重量％−５００ｇを投入し、電動ミキ
サーにて充分撹拌して比較用ペイントを得た。Comparative Example 3: 50 g of BR102 (described above), 50 g of titanium oxide powder (described above) and 400 g of acetone were charged into a stainless steel tank, and sufficiently stirred with an electric mixer. Then, KR300 (described above) was added to the tank. A resin content of 50% by weight and xylene of 50% by weight-500 g were charged and sufficiently stirred by an electric mixer to obtain a comparative paint.
【０１００】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（アセト
ン及びキシレンの合計量）は６５０ｇである。The amount of the methylphenyl silicone resin in the paint obtained here was 250 g, and the amount of the organic solvent (total amount of acetone and xylene) was 650 g.
【０１０１】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ１０cp
であった。The viscosity of the paint thus obtained was measured by the measuring method in the embodiment of the present invention.
Met.
【０１０２】ここに得た比較用ペイントの評価を、前記
発明の実施の形態におけるドット印字塗膜評価試験及び
その評価基準並びにペイント安定性評価試験及びその評
価基準とそれぞれ同一条件にて行った結果は、次のとお
りである。The evaluation of the comparative paint thus obtained was carried out under the same conditions as those of the dot printing coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention. Is as follows.
【０１０３】ドット印字塗膜評価試験結果は「×」、ペ
イント安定性評価試験結果も「×」であった。The dot print coating film evaluation test result was "x", and the paint stability evaluation test result was "x".
【０１０４】比較例４：ＢＲ１０２（前出）１０ｇ、酸
化チタン粉末（前出）１５０ｇ及びアセトン３４０ｇを
ステンレスタンクに投入し、電動ミキサーにて充分撹拌
した後、該タンクにＫＲ２７１（前出）−樹脂分５０重
量％・キシレン５０重量％−５００ｇを投入し、電動ミ
キサーにて充分撹拌して比較用ペイントを得た。Comparative Example 4: 10 g of BR102 (described above), 150 g of titanium oxide powder (described above) and 340 g of acetone were charged into a stainless steel tank, and sufficiently stirred with an electric mixer. Then, KR271 (described above) was added to the tank. A resin content of 50% by weight and xylene of 50% by weight-500 g were charged and sufficiently stirred by an electric mixer to obtain a comparative paint.
【０１０５】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（アセト
ン及びキシレンの合計量）は５９０ｇである。The paint thus obtained had a methylphenyl silicone resin content of 250 g and an organic solvent content (total amount of acetone and xylene) of 590 g.
【０１０６】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ３４cp
であった。When the viscosity of the paint obtained was measured by the measuring method in the embodiment of the present invention, it was 34 cp.
Met.
【０１０７】ここに得た比較用ペイントの評価を、前記
発明の実施の形態におけるドット印字塗膜評価試験及び
その評価基準並びにペイント安定性評価試験及びその評
価基準とそれぞれ同一条件にて行った結果は、次のとお
りである。The evaluation of the comparative paint thus obtained was carried out under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention. Is as follows.
【０１０８】ドット印字塗膜評価試験結果は「×」、ペ
イント安定性評価試験結果は「○」であった。The dot print coating film evaluation test result was "x", and the paint stability evaluation test result was "o".
【０１０９】比較例５：ＢＲ１０２（前出）５０ｇ、酸
化チタン粉末（前出）１５０ｇ及びアセトン４２０ｇを
ステンレスタンクに投入し、電動ミキサーにて充分撹拌
した後、該タンクにＫＲ２５５（前出）−樹脂分５０重
量％・トルエン２０重量％・キシレン５０重量％−３８
０ｇを投入し、電動ミキサーにて充分撹拌して比較用ペ
イントを得た。Comparative Example 5: 50 g of BR102 (described above), 150 g of titanium oxide powder (described above) and 420 g of acetone were charged into a stainless steel tank, and sufficiently stirred with an electric mixer. Then, KR255 (described above) was added to the tank. 50% by weight of resin, 20% by weight of toluene, 50% by weight of xylene-38
0 g was added, and the mixture was sufficiently stirred with an electric mixer to obtain a paint for comparison.
【０１１０】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は１９０ｇ、有機溶剤量（アセト
ン、トルエン及びキシレンの合計量）は６１０ｇであ
る。The amount of methylphenyl-based silicone resin in the paint thus obtained was 190 g, and the amount of organic solvent (total amount of acetone, toluene and xylene) was 610 g.
【０１１１】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ１３cp
であった。The viscosity of the obtained paint was measured by the measuring method in the embodiment of the present invention.
Met.
【０１１２】ここに得た比較用ペイントの評価を、前記
発明の実施の形態におけるドット印字塗膜評価試験及び
その評価基準並びにペイント安定性評価試験及びその評
価基準とそれぞれ同一条件にて行った結果は、次のとお
りである。The evaluation of the comparative paint thus obtained was carried out under the same conditions as those of the dot printing coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention. Is as follows.
【０１１３】ドット印字塗膜評価試験結果は「△」、ペ
イント安定性評価試験結果は「×」であった。The dot print coating film evaluation test result was “△”, and the paint stability evaluation test result was “×”.
【０１１４】比較例６：ＢＲ１０２（前出）５０ｇ、酸
化チタン粉末（前出）１５０ｇ及びアセトン１６０ｇを
ステンレスタンクに投入し、電動ミキサーにて充分撹拌
した後、該タンクにＫＲ２５５（前出）−樹脂分５０重
量％・トルエン２０重量％・キシレン５０重量％−６４
０ｇを投入し、電動ミキサーにて充分撹拌して比較用ペ
イントを得た。Comparative Example 6: 50 g of BR102 (described above), 150 g of titanium oxide powder (described above) and 160 g of acetone were charged into a stainless steel tank, and sufficiently stirred with an electric mixer. 50% by weight of resin, 20% by weight of toluene, 50% by weight of xylene-64
0 g was added, and the mixture was sufficiently stirred with an electric mixer to obtain a paint for comparison.
【０１１５】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は３２０ｇ、有機溶剤量（アセト
ン及びキシレンの合計量）は４８０ｇである。The amount of methylphenyl silicone resin in the paint obtained here was 320 g, and the amount of organic solvent (total amount of acetone and xylene) was 480 g.
【０１１６】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ２９cp
であった。The viscosity of the paint obtained was measured by the measuring method in the embodiment of the present invention.
Met.
【０１１７】ここに得た比較用ペイントの評価を、前記
発明の実施の形態におけるドット印字塗膜評価試験及び
その評価基準並びにペイント安定性評価試験及びその評
価基準とそれぞれ同一条件にて行った結果は、次のとお
りである。The evaluation of the comparative paint thus obtained was carried out under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention. Is as follows.
【０１１８】ドット印字塗膜評価試験結果は「△」、ペ
イント安定性評価試験結果は「○」であった。The dot print coating film evaluation test result was “△”, and the paint stability evaluation test result was “○”.
【０１１９】比較例７：ＢＲ１０２（前出）１５０ｇ、
酸化チタン粉末（前出）１５０ｇ及びアセトン２００ｇ
をステンレスタンクに投入し、電動ミキサーにて充分撹
拌した後、該タンクにＫＲ２７１（前出）−樹脂分５０
重量％・キシレン５０重量％−５００ｇを投入し、電動
ミキサーにて充分撹拌して比較用ペイントを得た。Comparative Example 7: BR102 (supra) 150 g,
150 g of titanium oxide powder (described above) and 200 g of acetone
Into a stainless steel tank and sufficiently stirred with an electric mixer.
50% by weight of xylene and 500% by weight of xylene were charged and sufficiently stirred with an electric mixer to obtain a paint for comparison.
【０１２０】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（アセト
ン及びキシレンの合計量）は４５０ｇである。The paint obtained here had a methylphenyl silicone resin content of 250 g and an organic solvent content (total amount of acetone and xylene) of 450 g.
【０１２１】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ４２cp
であった。When the viscosity of the paint obtained was measured by the measuring method in the embodiment of the present invention, it was 42 cp.
Met.
【０１２２】ここに得た比較用ペイントの評価を、前記
発明の実施の形態におけるドット印字塗膜評価試験及び
その評価基準並びにペイント安定性評価試験及びその評
価基準とそれぞれ同一条件にて行った結果は、次のとお
りである。The evaluation of the comparative paint thus obtained was carried out under the same conditions as those of the dot printing coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention. Is as follows.
【０１２３】ドット印字塗膜評価試験結果は「△」、ペ
イント安定性評価試験結果は「○」であった。The dot print coating film evaluation test result was “△”, and the paint stability evaluation test result was “○”.
【０１２４】比較例８：ＢＲ１０２（前出）５０ｇ、酸
化チタン粉末（前出）２５０ｇ及びアセトン２００ｇを
ステンレスタンクに投入し、電動ミキサーにて充分撹拌
した後、該タンクにＫＲ３００（前出）−樹脂分５０重
量％・キシレン５０重量％−５００ｇを投入し、電動ミ
キサーにて充分撹拌して比較用ペイントを得た。Comparative Example 8: 50 g of BR102 (described above), 250 g of titanium oxide powder (described above) and 200 g of acetone were charged into a stainless steel tank, sufficiently stirred with an electric mixer, and KR300 (described above) was added to the tank. A resin content of 50% by weight and xylene of 50% by weight-500 g were charged and sufficiently stirred with an electric mixer to obtain a paint for comparison.
【０１２５】なお、ここに得たペイントのメチルフェニ
ル系シリコーン樹脂量は２５０ｇ、有機溶剤量（アセト
ン及びキシレンの合計量）は４５０ｇである。The paint obtained here had a methylphenyl silicone resin content of 250 g and an organic solvent content (total amount of acetone and xylene) of 450 g.
【０１２６】ここに得たペイントの粘度を前記発明の実
施の形態における測定法によって測定したところ１７cp
であった。The viscosity of the paint obtained was measured by the measuring method in the embodiment of the present invention.
Met.
【０１２７】ここに得た比較用ペイントの評価を、前記
発明の実施の形態におけるドット印字塗膜評価試験及び
その評価基準並びにペイント安定性評価試験及びその評
価基準とそれぞれ同一条件にて行った結果は、次のとお
りである。The evaluation of the comparative paint thus obtained was carried out under the same conditions as those of the dot printed coating film evaluation test and the evaluation standard and the paint stability evaluation test and the evaluation standard in the embodiment of the present invention. Is as follows.
【０１２８】ドット印字塗膜評価試験結果は「△」、ペ
イント安定性評価試験結果は「○」であった。The evaluation result of the dot printed coating film evaluation test was “、”, and the evaluation result of paint stability evaluation was “○”.
【０１２９】[0129]
【発明の効果】本発明によれば、鉄鋼材製造工場などに
おいて汎用されている前記形式のドット印字装置に適用
でき、且つ、鋼材製造工程における約８９０〜９３０℃
の高温加熱状態からの水冷という苛酷な温度変化が加え
られる焼入処理を経由しても、該焼入処理以前に被処理
鋼材の表面にマーキングされているドット印字塗膜の剥
離・脱落が可及的に抑制できるドット印字用耐熱ペイン
トを提供することができる。According to the present invention, the present invention can be applied to a dot printing apparatus of the type generally used in a steel material manufacturing plant and the like, and has a temperature of about 890-930 ° C. in the steel material manufacturing process.
Even through a quenching process in which a severe temperature change such as water cooling from a high temperature heating state is applied, the dot printed coating film marked on the surface of the steel material to be processed can be peeled off or dropped off before the quenching process. It is possible to provide a heat-resistant paint for dot printing that can be suppressed as much as possible.
【０１３０】従って、本発明の産業利用性は非常に大き
いといえる。Therefore, it can be said that the industrial applicability of the present invention is very large.
Claims (1)
３０重量％と熱分解温度２５０℃以下のメタクリル酸樹
脂２〜１０重量％と酸化チタン粉末１０〜２０重量％と
アセトン、トルエン及びキシレンから選ばれる有機溶剤
４０〜６０重量％とからなり、且つ、粘度が１５〜３０
cpであることを特徴とするドット印字用耐熱ペイント。1. Methylphenyl silicone resin 20
30% by weight, 2 to 10% by weight of a methacrylic acid resin having a thermal decomposition temperature of 250 ° C. or lower, 10 to 20% by weight of titanium oxide powder, and 40 to 60% by weight of an organic solvent selected from acetone, toluene and xylene, and Viscosity 15-30
Heat resistant paint for dot printing characterized by being cp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000314074A JP3390810B2 (en) | 2000-10-13 | 2000-10-13 | Heat resistant paint for dot printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000314074A JP3390810B2 (en) | 2000-10-13 | 2000-10-13 | Heat resistant paint for dot printing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002121484A true JP2002121484A (en) | 2002-04-23 |
| JP3390810B2 JP3390810B2 (en) | 2003-03-31 |
Family
ID=18793389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000314074A Expired - Fee Related JP3390810B2 (en) | 2000-10-13 | 2000-10-13 | Heat resistant paint for dot printing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3390810B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005336379A (en) * | 2004-05-28 | 2005-12-08 | Marktec Corp | Paint for steel plate printing and method for steel plate printing |
| WO2007088719A1 (en) * | 2006-01-31 | 2007-08-09 | Tokai Senko K.K. | Marking ink |
| WO2007097250A1 (en) * | 2006-02-23 | 2007-08-30 | Tokai Senko K.K. | Ink for marking |
| JP2010519403A (en) * | 2007-02-27 | 2010-06-03 | タークソル・インターナショナル エル．エル．シー． | Method of applying a non-volatile organic compound coating |
| WO2013151113A1 (en) * | 2012-04-05 | 2013-10-10 | 株式会社サクラクレパス | Ink composition for coated steel sheet |
| JP2015518073A (en) * | 2012-04-13 | 2015-06-25 | コーニング インコーポレイテッド | Marking coating |
-
2000
- 2000-10-13 JP JP2000314074A patent/JP3390810B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005336379A (en) * | 2004-05-28 | 2005-12-08 | Marktec Corp | Paint for steel plate printing and method for steel plate printing |
| JP4586964B2 (en) * | 2004-05-28 | 2010-11-24 | マークテック株式会社 | Steel plate printing paint and steel plate printing method |
| WO2007088719A1 (en) * | 2006-01-31 | 2007-08-09 | Tokai Senko K.K. | Marking ink |
| WO2007097250A1 (en) * | 2006-02-23 | 2007-08-30 | Tokai Senko K.K. | Ink for marking |
| JP2010519403A (en) * | 2007-02-27 | 2010-06-03 | タークソル・インターナショナル エル．エル．シー． | Method of applying a non-volatile organic compound coating |
| WO2013151113A1 (en) * | 2012-04-05 | 2013-10-10 | 株式会社サクラクレパス | Ink composition for coated steel sheet |
| JP2013216744A (en) * | 2012-04-05 | 2013-10-24 | Sakura Color Products Corp | Ink composition for coated steel sheet |
| JP2015518073A (en) * | 2012-04-13 | 2015-06-25 | コーニング インコーポレイテッド | Marking coating |
| US10000426B2 (en) | 2012-04-13 | 2018-06-19 | Corning Incorporated | Marking coating |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3390810B2 (en) | 2003-03-31 |
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