JPH0521155B2 - - Google Patents
Info
- Publication number
- JPH0521155B2 JPH0521155B2 JP60219407A JP21940785A JPH0521155B2 JP H0521155 B2 JPH0521155 B2 JP H0521155B2 JP 60219407 A JP60219407 A JP 60219407A JP 21940785 A JP21940785 A JP 21940785A JP H0521155 B2 JPH0521155 B2 JP H0521155B2
- Authority
- JP
- Japan
- Prior art keywords
- solvent
- film
- polymer
- solvents
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002904 solvent Substances 0.000 claims description 29
- 229920000642 polymer Polymers 0.000 claims description 19
- 239000003094 microcapsule Substances 0.000 claims description 17
- 239000008199 coating composition Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 description 24
- 239000011248 coating agent Substances 0.000 description 23
- 239000003973 paint Substances 0.000 description 20
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 15
- 238000012360 testing method Methods 0.000 description 14
- 239000000203 mixture Substances 0.000 description 12
- 239000002775 capsule Substances 0.000 description 11
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- 239000003849 aromatic solvent Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- -1 isopropyl ether Chemical compound 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000008096 xylene Substances 0.000 description 3
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 229920002396 Polyurea Polymers 0.000 description 2
- 239000005456 alcohol based solvent Substances 0.000 description 2
- 229940072049 amyl acetate Drugs 0.000 description 2
- PGMYKACGEOXYJE-UHFFFAOYSA-N anhydrous amyl acetate Natural products CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000003759 ester based solvent Substances 0.000 description 2
- 239000004210 ether based solvent Substances 0.000 description 2
- MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical compound CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 description 2
- 239000005453 ketone based solvent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 238000012695 Interfacial polymerization Methods 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 241001529739 Prunella <angiosperm> Species 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229920001800 Shellac Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 150000003097 polyterpenes Chemical class 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 235000008113 selfheal Nutrition 0.000 description 1
- 239000004208 shellac Substances 0.000 description 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
- 229940113147 shellac Drugs 0.000 description 1
- 235000013874 shellac Nutrition 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
Description
[発明の利用分野]
本発明は塗料用組成物に関する。更に詳しく
は、衝撃などの外力により塗膜が損傷を受けた場
合、自ら塗膜が再生する自己回復性を有する塗料
用組成物に関する。
[従来技術とその問題点]
従来の塗料は、塗膜形成要素である各種の樹
脂、繊維素、ゴムなどを溶媒に溶解あるいは分散
させたものに、必要に応じて各種の顔料、可塑
剤、硬化促進剤、光沢付与剤、防蝕剤などを更に
加えて混合したものである。
この塗料組成物を塗付し、乾燥あるいは硬化す
ることにより強固な塗膜が得られる。
ところで、このようにして得られた塗膜は、機
械的衝撃あるいはひつかきなどの外力により剥離
または脱落することがある。このようにして形成
された傷は、該塗膜が自己回復性を有していない
ためそのまま残り、長期間経過するうちに美観を
そこね、金属面上などの場合には発錆の原因とも
なる。
[問題点を解決するための手段]
本発明は自己回復性を有する塗膜が得られる塗
料組成物を提供することにある。かくすることに
より、塗膜が受けた損傷は、塗膜が再生する、す
なわち自己回復性を有するため修復し、長期間に
わたつて塗膜としての性能が維持されることとな
る。
すなわち、本発明は、成分として()塗膜成
形能を有するポリマー、および()該ポリマー
を溶解し得る揮発性溶剤を内包する感圧性マイク
ロカプセルを含む塗料用組成物に関する。
以下に本発明を更に説明する。
本発明の塗膜形成能を有するポリマーとは、通
常塗料に用いられるポリマーであつて、焼付けま
たは硬化などをすることのない非架橋型のポリマ
ーである。また、該ポリマーは、後述のマイクロ
カプセル中に内包される溶剤に溶解するものであ
る。
具体的な上記ポリマーとしては、たとえば、石
油樹脂、ポリスチレン、キシレン樹脂、アクリル
樹脂、塩化ビニル樹脂、ニトロセルロースなどの
合成もしくは半合成樹脂などのほか、ポリテルペ
ン樹脂、ロジン、セラツクなどの天然樹脂などが
あげられる。これらのポリマーは1種または2種
以上の混合物として使用することができる。
上記のポリマーと共に、感圧性マイクロカプセ
ルが用いられる。この感圧性とは、圧力によりカ
プセルが破壊され内包する溶剤が流出するもので
あるが、塗料組成物の配合時の微少な圧力では破
壊されることはなく、一旦塗膜形成された後、該
塗膜が機械的衝撃または引つかきなどにより損傷
を受けることとなるような圧力により初めて破壊
することを意味する。このような感圧性の調節
は、マイクロカプセルの膜形成物質あるいはその
膜厚、粒径などを調節することにより容易に達成
できる。
本発明の感圧性マイクロカプセルは、揮発性溶
剤を内包する。また、この揮発性溶剤は前述した
塗膜を形成するポリマーを溶解し得る溶剤であ
る。具体的には、通常塗料溶剤として用いられる
ものから任意に選択して用いることができ、たと
えば、トルエン、キシレンなどの芳香族系溶剤、
酢酸エチル、酢酸アミルなどのエステル系溶剤、
ブタノールなどのアルコール系溶剤、イソプロピ
ルエーテルなどのエーテル系溶剤、メチルイソブ
チルケトンなどのケトン系溶剤などがあげられ
る。これらの溶剤は、カプセルが破壊した時、外
部に流出し、カプセル周囲のポリマーを溶解さ
せ、該ポリマーに流動性を付与する結果、該ポリ
マーは自己回復性を有することとなって損傷を受
けた箇所は修復されることとなる。修復後は、塗
膜はふたたび以前と同様に乾燥状態となることが
望ましいので、マイクロカプセル中に内包される
溶剤は揮発性の溶剤である必要がある。好ましく
は低沸点の、たとえば沸点260℃以下の溶剤であ
つて、前記した塗膜を形成するポリマーを溶解す
るようなものを上記の溶剤の中から選択する。
マイクロカプセル自体の製法は、公知の方法、
たとえばコア・セルベーシヨン、in situ重合ま
たは界面重合などにより調製される。またカプセ
ルの膜形成物質は、内包する溶剤に溶解、あるい
は膨潤しないものであつて、たとえばゼラチン、
ポリ尿素、ポリアミド、ポリウレタン、エポキシ
樹脂、ポリエチレン、ポリスチレンなどから適宜
に選択される。
マイクロカプセルの粒径は、余り大きいと塗り
ムラなどの原因となり好ましくない。通常は1μ
〜500μ程度の平均粒径のカプセルが使用される。
本発明においては、前記の塗膜形成物質として
のポリマー100重量部当り、カプセル内包溶剤と
して5〜2000重量部好ましくは10〜500重量部に
相当するマイクロカプセルを混合して用いる。
2000部を越えると、カプセル破壊時に塗膜のダ
レ、ベトツキなどが生じるので好ましくない。
本発明の塗料組成物を塗付するには、上記のポ
リマーおよびマイクロカプセルを、適宜の塗料用
溶剤に混合して用いる。この塗料用溶剤は、マイ
クロカプセルの膜物質を溶解あるいは膨潤させな
い溶剤であるならば、通常の塗料用溶剤の中から
適宜に選択できる。この塗料用溶剤中に、前記の
ポリマーは溶解、あるいは乳化剤などの助けによ
り乳化する。たとえば、トルエン、キシレンなど
の芳香族系溶剤、酢酸エチル、酢酸アミルなどの
エステル系溶剤、ブタノールなどのアルコール系
溶剤、ジイソプロピルエーテルなどのエーテル系
溶剤、メチルエチルケトンなどのケトン系溶剤、
あるいはこれらの混合溶剤などの塗料用一般溶剤
を用いることができる。さらに本発明の組成物
は、水性エマルジヨンの形態でも使用できる。こ
の塗料用溶剤あるいはエマルジヨン時の水の使用
量は、塗付時の作業性などに応じて任意に決定さ
れる。
なお、上記の塗料用溶剤は、カプセル内包溶剤
と同一のものでもよいが、適宜の他の溶剤をも使
用することができる。
さらに、本発明の組成物は、本発明の効果が達
成される範囲内で、従来公知の充填剤、有機もし
くは無機顔料、染料、可塑剤などを任意の割合で
混合して用いることができる。また、従来公知の
防錆剤なども併用することができる。
本発明の塗料用組成物は、一般の塗料と同様
に、金属、プラスチツク、木材、コンクリートな
どのあらゆる材質のものの塗装に使用することが
できる。特に金属に塗装するならば、美観の維持
のほか、その防錆効果も一段と維持、向上するの
で好ましい。
[本発明の効果]
本発明の塗料用組成物は、塗膜が外力による損
傷を受けても、共存するマイクロカプセル中に内
包する溶剤が、損傷時のカプセルの破壊により流
出し、カプセル周囲の塗膜形成物質としてのポリ
マーを溶解させる結果、塗膜が再形成、すなわち
自己回復する。このため、本発明の塗料用組成物
による塗膜は、損傷を受けてもその美観などを維
持できるとともに、金属上に塗装した場合には防
錆効果をも維持、持続させることができる。
[実施例]
以下、実施例により本発明を詳述する。
実施例 1
(塗料用組成物−1の調製)
下記の組成のものを混合し、塗料用組成物−1
を調製した。なお、石油樹脂はトルエン中に溶解
して用いた。
石油樹脂* 33重量部
トルエン 50 〃
溶剤内包マイクロカプセル** 17 〃
*日本石油化学(株)製
「日石ネオポリマーNP−120」(商品名)
**内包溶剤:芳香族系溶剤(沸点184〜210
℃) 〔日本石油化学(株)製日石ハイゾール
#150(商品名)〕
マイクロカプセル:ポリ尿素マイクロカプセル
平均粒径3μ
(組成物の鋼板への塗布および発錆テスト)
JIS Z 0236に規定する研磨した鋼板試験片
に、上記組成物を1枚片面当り0.3gとなる様に
塗布し、50℃×25分乾燥した。塗布試験片は6枚
調製し、3枚はそのままで、残りの3枚は、塗布
面に切り目(5mm角の碁盤目、但し周囲は2.5mm
巾)をナイフで入れた。切り目は鋼板表面に到達
する深さとした。
各試験片を25℃で5時間放置した。次いで各試
験片をJIS Z 0236の6.2に規定する方法で塩水
噴霧試験に供し錆の発生状況を観測した。結果を
表−1に示す。
表−1には参考の為、上記組成物を全く塗布し
ない同一形状の試験片についての塩水噴霧試験の
結果も合わせて示す。
比較例 1
(塗料組成物2の調製)
石油樹脂* 40重量部
トルエン 60 〃
*「日石ネオポリマーNP−120」(商品名)
(組成物の鋼板への塗布および発錆テスト)
実施例1と同様に上記組成物を塗布し乾燥した
試験片を6枚作製し、3枚はそのままの状態で、
3枚は実施例1と同様の切り目を入れて塩水噴霧
試験に供し、錆発生の状況を試験した結果を同じ
く表−1に示す。
[Field of Application of the Invention] The present invention relates to a coating composition. More specifically, the present invention relates to a paint composition that has self-healing properties that allow the paint film to regenerate itself when the paint film is damaged by an external force such as an impact. [Prior art and its problems] Conventional paints are made by dissolving or dispersing various resins, cellulose, rubber, etc., which are film-forming elements, in a solvent, and adding various pigments, plasticizers, etc. as necessary. A curing accelerator, a brightening agent, an anticorrosion agent, etc. are further added to the mixture. A strong coating film can be obtained by applying this coating composition and drying or curing it. By the way, the coating film obtained in this way may peel or fall off due to external force such as mechanical impact or rubbing. The scratches formed in this way remain because the paint film does not have self-healing properties, and over a long period of time they deteriorate the aesthetic appearance and can even cause rusting on metal surfaces. Become. [Means for Solving the Problems] The object of the present invention is to provide a coating composition from which a coating film having self-healing properties can be obtained. As a result, damage to the paint film can be repaired because the paint film is regenerated, that is, has self-healing properties, and its performance as a paint film is maintained over a long period of time. That is, the present invention relates to a coating composition containing as components () a polymer having film-forming ability, and () pressure-sensitive microcapsules encapsulating a volatile solvent capable of dissolving the polymer. The invention will be further explained below. The polymer capable of forming a coating film according to the present invention is a non-crosslinked polymer that is normally used in paints and is not subjected to baking or curing. Further, the polymer is soluble in a solvent encapsulated in the microcapsules described below. Specific examples of the above-mentioned polymers include synthetic or semi-synthetic resins such as petroleum resins, polystyrene, xylene resins, acrylic resins, vinyl chloride resins, and nitrocellulose, as well as natural resins such as polyterpene resins, rosin, and shellac. can give. These polymers can be used alone or as a mixture of two or more. In conjunction with the above polymers, pressure sensitive microcapsules are used. This pressure sensitivity means that the capsule is destroyed by pressure and the contained solvent flows out, but it is not destroyed by the minute pressure when compounding the coating composition, and once the coating film is formed, the capsule is This means that the paint film will only break under pressure such that it will be damaged by mechanical impact or pulling. Such adjustment of pressure sensitivity can be easily achieved by adjusting the film-forming substance of the microcapsules, its film thickness, particle size, etc. The pressure-sensitive microcapsules of the present invention encapsulate a volatile solvent. Further, this volatile solvent is a solvent capable of dissolving the polymer forming the coating film described above. Specifically, any solvent can be selected from those commonly used as paint solvents, such as aromatic solvents such as toluene and xylene;
Ester solvents such as ethyl acetate and amyl acetate,
Examples include alcohol solvents such as butanol, ether solvents such as isopropyl ether, and ketone solvents such as methyl isobutyl ketone. When the capsule ruptures, these solvents flow out to the outside, dissolve the polymer around the capsule, and give fluidity to the polymer. As a result, the polymer has self-healing properties and is damaged. The area will be repaired. After repair, it is desirable that the paint film be dry again as before, so the solvent encapsulated in the microcapsules needs to be a volatile solvent. Preferably, a solvent with a low boiling point, for example, a boiling point of 260° C. or less, which dissolves the polymer forming the coating film, is selected from the above-mentioned solvents. The manufacturing method of the microcapsule itself is a known method,
For example, they are prepared by core cervation, in situ polymerization or interfacial polymerization. In addition, the film-forming substance of the capsule is one that does not dissolve or swell in the encapsulating solvent, such as gelatin,
It is appropriately selected from polyurea, polyamide, polyurethane, epoxy resin, polyethylene, polystyrene, etc. If the particle size of the microcapsules is too large, it may cause uneven coating, which is undesirable. Usually 1μ
Capsules with an average particle size of ~500μ are used. In the present invention, 5 to 2,000 parts by weight, preferably 10 to 500 parts by weight of microcapsules as a capsule encapsulating solvent are mixed and used per 100 parts by weight of the polymer as the coating film forming substance.
If it exceeds 2000 parts, the coating film will sag or become sticky when the capsule is broken, which is not preferable. To apply the coating composition of the present invention, the above-mentioned polymer and microcapsules are mixed with a suitable coating solvent and used. This paint solvent can be appropriately selected from common paint solvents as long as it does not dissolve or swell the membrane material of the microcapsules. In this coating solvent, the above-mentioned polymer is dissolved or emulsified with the aid of an emulsifier or the like. For example, aromatic solvents such as toluene and xylene, ester solvents such as ethyl acetate and amyl acetate, alcohol solvents such as butanol, ether solvents such as diisopropyl ether, ketone solvents such as methyl ethyl ketone,
Alternatively, general paint solvents such as mixed solvents thereof can be used. Furthermore, the compositions of the invention can also be used in the form of aqueous emulsions. The amount of paint solvent or water used during emulsion is arbitrarily determined depending on workability during application. The above paint solvent may be the same as the capsule encapsulating solvent, but other appropriate solvents may also be used. Furthermore, the composition of the present invention may contain conventionally known fillers, organic or inorganic pigments, dyes, plasticizers, etc. in arbitrary proportions within the range that achieves the effects of the present invention. In addition, conventionally known rust preventives and the like can also be used. The coating composition of the present invention can be used for coating various materials such as metal, plastic, wood, and concrete in the same way as general coatings. In particular, it is preferable to paint metal because it not only maintains its aesthetic appearance but also further maintains and improves its rust prevention effect. [Effects of the present invention] In the coating composition of the present invention, even if the coating film is damaged by external force, the solvent contained in the coexisting microcapsules flows out due to the destruction of the capsules at the time of damage, and the surrounding area of the capsules is As a result of dissolving the polymer as film-forming substance, the film reformes, ie self-heals. Therefore, a coating film made from the coating composition of the present invention can maintain its beauty even if it is damaged, and when coated on metal, it can also maintain and maintain its antirust effect. [Examples] Hereinafter, the present invention will be explained in detail with reference to Examples. Example 1 (Preparation of coating composition-1) The following compositions were mixed to prepare coating composition-1.
was prepared. Note that the petroleum resin was used after being dissolved in toluene. Petroleum resin * 33 parts by weight Toluene 50 〃 Solvent-encapsulated microcapsules ** 17 〃 *Nippon Petrochemical Co., Ltd.'s "Nisseki Neopolymer NP-120" (product name) **Encapsulated solvent: Aromatic solvent (boiling point 184) ~210
℃) [Nisseki Hysol #150 (trade name) manufactured by Nippon Petrochemicals Co., Ltd.] Microcapsule: Polyurea microcapsule average particle size 3μ (Application of composition to steel plate and rusting test) Specified in JIS Z 0236 The above composition was applied to a polished steel plate test piece in an amount of 0.3 g per side, and dried at 50°C for 25 minutes. Six coated test pieces were prepared, three were left as they were, and the remaining three were cut in a 5 mm square grid pattern, with a circumference of 2.5 mm.
(width) with a knife. The cut was deep enough to reach the surface of the steel plate. Each test piece was left at 25°C for 5 hours. Next, each test piece was subjected to a salt spray test according to the method specified in 6.2 of JIS Z 0236, and the occurrence of rust was observed. The results are shown in Table-1. For reference, Table 1 also shows the results of a salt spray test on test pieces of the same shape that were not coated with any of the above compositions. Comparative example 1 (Preparation of coating composition 2) Petroleum resin * 40 parts by weight Toluene 60 * "Nisseki Neopolymer NP-120" (trade name) (Application of composition to steel plate and rusting test) Example 1 Similarly, six test pieces were prepared by applying the above composition and drying, and three test pieces were left as they were.
The three sheets were cut in the same way as in Example 1 and subjected to a salt spray test, and the results of testing for rust occurrence are also shown in Table 1.
【表】
(塗膜修復能の比較試験)
実施例1(E)および比較例1(R)の組成物をガラス
板に塗布し、常温で16時間乾燥し、乾燥塗膜を得
た。次いで塗膜にナイフで切り目を入れ、常温で
放置し、時間経過による塗膜の回復を観察した。
実施例1(E)の塗膜は時間経過と共に切り目によ
る損傷部の回復が明らかに認められ、24時間後に
はナイフによる切り目がほとんど認められない程
度に回復していた。一方、比較例の塗膜は24時間
後でもナイフによる切り目が明瞭に認められ、損
傷部は回復していなかつた。[Table] (Comparative test of paint film repair ability) The compositions of Example 1 (E) and Comparative Example 1 (R) were applied to a glass plate and dried at room temperature for 16 hours to obtain a dry paint film. Next, a cut was made in the coating film with a knife, and the coating film was left to stand at room temperature, and the recovery of the coating film over time was observed. In the coating film of Example 1 (E), it was clearly observed that the damage caused by the cuts had recovered over time, and after 24 hours, the coating had recovered to the extent that the cuts caused by the knife could hardly be recognized. On the other hand, in the coating film of the comparative example, cuts made by the knife were clearly visible even after 24 hours, and the damaged area had not recovered.
Claims (1)
ー、および()該ポリマーを溶解し得る揮発性
溶剤を内包する感圧性マイクロカプセルを含む塗
料用組成物。 2 前記ポリマー100重量部当り、前記揮発性溶
剤5〜2000重量部に相当する前記マイクロカプセ
ルを含む特許請求の範囲第1項記載の塗料用組成
物。[Scope of Claims] A coating composition comprising, as one component, () a polymer having film-forming ability, and () pressure-sensitive microcapsules encapsulating a volatile solvent capable of dissolving the polymer. 2. The coating composition according to claim 1, which contains the microcapsules in an amount of 5 to 2000 parts by weight of the volatile solvent per 100 parts by weight of the polymer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60219407A JPS6279279A (en) | 1985-10-02 | 1985-10-02 | Composition for coating material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60219407A JPS6279279A (en) | 1985-10-02 | 1985-10-02 | Composition for coating material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6279279A JPS6279279A (en) | 1987-04-11 |
JPH0521155B2 true JPH0521155B2 (en) | 1993-03-23 |
Family
ID=16734918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60219407A Granted JPS6279279A (en) | 1985-10-02 | 1985-10-02 | Composition for coating material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6279279A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007012757A1 (en) * | 2007-03-16 | 2008-09-18 | Prometho Gmbh | Film-forming composition, its preparation and application, its use for the direct removal of soiled and contaminated surfaces, which in particular have no preventive protective layers and application set containing this composition |
DE102008030189A1 (en) * | 2008-06-25 | 2009-12-31 | Siemens Aktiengesellschaft | Component with a self-healing surface layer, self-healing lacquer or coating powder with self-healing properties |
-
1985
- 1985-10-02 JP JP60219407A patent/JPS6279279A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6279279A (en) | 1987-04-11 |
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