JPS6227108B2 - - Google Patents
Info
- Publication number
- JPS6227108B2 JPS6227108B2 JP54091949A JP9194979A JPS6227108B2 JP S6227108 B2 JPS6227108 B2 JP S6227108B2 JP 54091949 A JP54091949 A JP 54091949A JP 9194979 A JP9194979 A JP 9194979A JP S6227108 B2 JPS6227108 B2 JP S6227108B2
- Authority
- JP
- Japan
- Prior art keywords
- powder coating
- resin
- weight
- phenolic resin
- 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
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- Paints Or Removers (AREA)
Description
【発明の詳細な説明】
この発明は、下地用粉体塗料に係り、特に熱硬
化性粉体塗料中に、フエノール樹脂を含ませた研
摩性のしやすい下塗り用粉体塗料に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a powder coating for an undercoat, and more particularly to a powder coating for an undercoat that is easily abrasive and contains a phenolic resin in a thermosetting powder coating.
現在、被塗装物体への塗装として熱硬化性粉体
塗料を用いた粉体塗装が行なわれるようになつて
きた。そして、熱硬化性粉体塗料として、耐食性
の良好なエポキシ粉体塗料、耐候性のすぐれたア
クリル粉体塗料、アクリルとエポキシの中間の性
質を有したポリエステル粉体塗料が主として用い
られており、これらの粉体塗料は、融点40〜150
℃のベースレジンに硬化剤を入れた樹脂成分と、
充填剤、流れ調節剤、着色剤などの添加剤成分よ
りなつている。 At present, powder coating using thermosetting powder coatings has come to be used for coating objects to be coated. As thermosetting powder coatings, epoxy powder coatings with good corrosion resistance, acrylic powder coatings with excellent weather resistance, and polyester powder coatings with properties intermediate between acrylic and epoxy are mainly used. These powder coatings have a melting point of 40-150
A resin component containing a curing agent in base resin at ℃,
It consists of additive components such as fillers, flow control agents, and colorants.
そして、これら粉体塗料の製造は一般に、樹脂
成分と、添加剤成分を、ヘンシエルミキサーによ
り予備混合後エキストルーダにより、溶融混練
し、冷却後、粉砕機にて粉末にしたもので平均粒
径150〜20ミクロン、融点40〜150℃の性質を持つ
ている。 Generally, these powder coatings are manufactured by pre-mixing resin components and additive components using a Henschel mixer, then melt-kneading them using an extruder, cooling them, and then pulverizing them using a pulverizer with an average particle size of 150. It has a property of ~20 microns and a melting point of 40~150℃.
この様にして製造された粉体塗料は、流動浸せ
き法、静電スプレー法、静電流動浸せき法、ブロ
ー塗装法、散布法などの塗装方法により、被塗装
物体表面に30ミクロン〜５mmまでの塗膜を形成さ
せることができる。なお、一般の美粧用粉塗料は
30〜70ミクロンが用いられ、防食用下地処理用、
絶縁用などの機能的な応用に関しては、その要求
特性により塗膜の厚さが決められているものであ
る。 The powder coating produced in this way can be applied to the surface of the object to be coated in a layer of 30 microns to 5 mm by coating methods such as fluidized dipping, electrostatic spraying, electrostatic dynamic dipping, blow coating, and spraying. A coating film can be formed. In addition, general cosmetic powder paints are
30-70 micron is used for anti-corrosion base treatment,
For functional applications such as insulation, the thickness of the coating film is determined by the required characteristics.
一方、下塗り塗装は、防錆、平滑性などの性能
が要求され、なかでも平滑性を要求される分野で
は塗装後平滑に仕上げるために、ペーパーかけ、
水研ぎなどの方法で塗装面を研摩する必要があ
り、一般に電着法、パテ処理法、スラリーペイン
ト法、および溶剤形塗料の重ね塗りが行なわれて
いた。 On the other hand, undercoat paint requires performance such as rust prevention and smoothness, and in fields where smoothness is particularly required, it is necessary to apply paper to achieve a smooth finish after painting.
It is necessary to polish the painted surface using methods such as wet sanding, and generally electrodeposition, putty treatment, slurry painting, and overcoating of solvent-based paints have been used.
ところで、この下塗り塗装分野にも、最近粉体
塗装が行なえないかと種々検討されているが、こ
の粉体塗装は、従来のパテ処理法等に比べ塗膜性
能が優れているため非常に研摩しにくく実用化が
されにくいものであつた。 By the way, recently various studies have been conducted on the possibility of using powder coating in the field of undercoating, but this powder coating has superior coating performance compared to conventional putty processing methods, so it requires a lot of polishing. It was difficult to put it into practical use.
この発明は上記したような諸事情と鑑みてなさ
れたものであり、熱硬化性粉体塗料に、20〜90重
量％のフエノール樹脂と10〜70重量％のタルクと
を含ませたことにより、研摩の非常にしやすい下
地用粉体塗料を提供するものである。 This invention was made in view of the above-mentioned circumstances, and by incorporating 20 to 90% by weight of phenolic resin and 10 to 70% by weight of talc into a thermosetting powder coating, The present invention provides a base powder coating that is extremely easy to polish.
以下にこの発明の下地用粉体塗料について説明
する。 The base powder coating of the present invention will be explained below.
まず熱硬化性粉体塗料のベースレジンつまり、
融点40℃〜150℃または、液状のベースレジン
に、フエノール樹脂を20重量％〜90重量パーセン
ト含まれるように添加、つまりベースレジン100
重量部に、フエノール樹脂を25〜900重量部添加
する。この時ベースレジンとフエノール樹脂とを
予備反応させてもよい。そしてこのベースレジン
にフエノール樹脂が添加されたものにベースレジ
ンの硬化剤を加え樹脂成分を形成する。この樹脂
成分にタルクを10〜70重量％になるように添加す
る。つまり樹脂成分100重量部に11.1〜233重量部
のタルクを添加するものである。次に、樹脂成分
にタルクが添加されたものにその他の添加剤を加
えた後、溶融混練して融点40℃〜150℃の樹脂組
成物とし、これを粉砕して粉体塗料としたもので
ある。 First, the base resin for thermosetting powder coatings,
Melting point: 40°C to 150°C, or add phenolic resin to liquid base resin to contain 20% to 90% by weight, that is, base resin 100%
Add 25 to 900 parts by weight of phenolic resin to the parts by weight. At this time, the base resin and the phenolic resin may be preliminarily reacted. Then, a curing agent for the base resin is added to the base resin to which the phenolic resin is added to form a resin component. Talc is added to this resin component in an amount of 10 to 70% by weight. That is, 11.1 to 233 parts by weight of talc is added to 100 parts by weight of the resin component. Next, other additives are added to the resin component with talc added, and then melted and kneaded to form a resin composition with a melting point of 40°C to 150°C, which is then ground to make a powder coating. be.
そして、上記熱硬化性粉体塗料としては、エポ
キシ樹脂、アクリル樹脂、ポリエステル樹脂など
であり、これらの粉体塗料は、ベースレジンと硬
化剤よりなる樹脂成分と充てん剤、着色剤、流れ
調節剤などの添加剤成分よりなつているものであ
る。また、フエノール樹脂としては、融点40〜
150℃のノボラツク型フエノール樹脂または、レ
ゾール型フエノール樹脂を用いるものであり、で
きるならば、揮発成分のできるだけ少ないものが
よい。そしてこのレゾール型フエノール樹脂は、
フエノールと過剰のホルムアルデイドをアルカリ
触媒を用いて反応させたフエノールとホルムアル
デイドが付加した種々のフエノールアルコールの
混合物であり、その反応の度合により種々の融点
のものが得られるものである。このものにあつて
は加熱により不溶不融の硬化物になるものであ
り、またノボラツク型フエノール樹脂は、ホルム
アルデイドに、過剰のフエノールを加え、酸を触
媒として反応させてたフエノールアルコールに
し、さらに過剰のフエノールを付加してジヒドロ
キシジフエニルメタン系にしたものである。この
ものにあつては、一般にヘキサメチレンジアミン
を添加して硬化させるものである。なお、レゾー
ル型フエノール樹脂と同様、反応の度合により
種々の融点のものが得られることは、いうまでも
ない。 The above-mentioned thermosetting powder coatings include epoxy resins, acrylic resins, polyester resins, etc., and these powder coatings include a resin component consisting of a base resin and a curing agent, a filler, a colorant, and a flow control agent. It is made up of additive components such as. In addition, as a phenolic resin, the melting point is 40~
A novolac-type phenolic resin or a resol-type phenolic resin at 150° C. is used, and if possible, one with as few volatile components as possible is preferable. And this resol type phenolic resin is
It is a mixture of various phenol alcohols to which phenol and formaldide have been added by reacting phenol and excess formaldide using an alkali catalyst, and products with various melting points can be obtained depending on the degree of the reaction. In this case, it becomes an insoluble and infusible hardened product when heated, and novolak type phenolic resin is made by adding excess phenol to formaldide and reacting with acid as a catalyst to make phenol alcohol. Excess phenol is added to make dihydroxydiphenylmethane. This material is generally cured by adding hexamethylene diamine. It goes without saying that, like resol type phenolic resins, resins with various melting points can be obtained depending on the degree of reaction.
なお、ベースレジンにフエノール樹脂を添加す
るに際し、ベースレジン100重量部に対し望まし
くはフエノール樹脂を100〜600重量部加えたもの
が良いものであり、100重量部より少ないと研摩
性が劣り、600重量部を超えると塗膜がもろくな
りやすいのである。 When adding phenolic resin to the base resin, it is preferable to add 100 to 600 parts by weight of the phenolic resin to 100 parts by weight of the base resin. If the amount exceeds 1 part by weight, the coating film tends to become brittle.
次に、この発明をエポキシ粉体塗料による一実
施例に基づいてさらに詳細に説明すると、エピユ
ート1004（シエル社）100重量部に揮発分の少な
い融点100℃のノボラツク型フエノール樹脂200重
量部とタルク30重量部、それに硬化剤としてジシ
アンジアミド７重量部を加え、ヘンシエルミキサ
ーで、混合後120℃にセツトされたエキストルー
ダで溶融混練し、融点80℃の、エポキシ樹脂組成
物とし、粉砕機にて粉砕後、60メツシユのふるい
を通過させて下塗り用エポキシ粉体塗料を製造し
た。 Next, to explain this invention in more detail based on an example using an epoxy powder coating, 100 parts by weight of Epiyute 1004 (Siel Co., Ltd.), 200 parts by weight of a novolac-type phenolic resin with a low volatile content and a melting point of 100°C, and talc. 30 parts by weight, and 7 parts by weight of dicyandiamide as a hardening agent were added thereto, mixed in a Henschel mixer, then melted and kneaded in an extruder set at 120°C to form an epoxy resin composition with a melting point of 80°C, which was crushed in a pulverizer. Afterwards, it was passed through a 60 mesh sieve to produce an epoxy powder paint for undercoating.
この粉体塗料を、1.5mm鉄板に、流動浸せき法
により塗装し0.5mmの塗膜を形成させて、テーバ
式摩耗試験機により研摩性をテストした。用いた
と石は、H18で、荷重１Kg、100回転後の摩耗量
を測定した結果上記のものは0.35cm3であつた。な
お、比較例として、市販のエポキシ粉体塗料、ア
リリル粉体塗料、ポリエステル粉体塗料につき、
上記と同様にして試料を作り、テストした結果す
べて、0.03〜0.10cm3で非常に研摩しにくく、上記
実施例のものがすこぶる研摩性が良いことがわか
る。 This powder coating was applied to a 1.5 mm iron plate by the fluidized dipping method to form a 0.5 mm film, and its abrasiveness was tested using a Taber type abrasion tester. The stone used was H18, and the amount of wear measured after 100 rotations under a load of 1 kg was 0.35 cm 3 . As a comparative example, commercially available epoxy powder coating, allyl powder coating, polyester powder coating,
Samples were prepared in the same manner as above and tested. All of the samples were 0.03 to 0.10 cm 3 and were very difficult to polish, indicating that the samples of the above examples had very good polishability.
この発明は以上に述べた様に、熱硬化性粉体塗
料成分に、フエノール樹脂とタルクとを共存させ
たので研摩性が良く、工業的に有益な下地用粉体
塗料が得られるものである。 As described above, this invention allows the coexistence of phenolic resin and talc in the thermosetting powder coating components, resulting in good abrasiveness and an industrially useful base powder coating. .
Claims (1)
ール樹脂と、10〜70重量％のタルクを含有させた
ことを特徴とする下地用粉体塗料。 ２ 熱硬化性粉体塗料として、エポキシ樹脂、ア
クリル樹脂、あるいはポリエステル樹脂のいずれ
かとしたことを特徴とする特許請求の範囲第１項
記載の下地用粉体塗料。[Scope of Claims] 1. A base powder coating characterized by containing 20 to 90% by weight of phenolic resin and 10 to 70% by weight of talc in a thermosetting powder coating. 2. The base powder coating according to claim 1, wherein the thermosetting powder coating is made of epoxy resin, acrylic resin, or polyester resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9194979A JPS5616565A (en) | 1979-07-19 | 1979-07-19 | Priming powder coating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9194979A JPS5616565A (en) | 1979-07-19 | 1979-07-19 | Priming powder coating material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5616565A JPS5616565A (en) | 1981-02-17 |
| JPS6227108B2 true JPS6227108B2 (en) | 1987-06-12 |
Family
ID=14040827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9194979A Granted JPS5616565A (en) | 1979-07-19 | 1979-07-19 | Priming powder coating material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5616565A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934920Y2 (en) * | 1981-06-03 | 1984-09-27 | 株式会社五藤光学研究所 | Light amount adjustment device for a bright star projection tube in a planetarium |
| WO2011012627A2 (en) * | 2009-07-29 | 2011-02-03 | Akzo Nobel Coatings International B.V. | Powder coating compositions capable of having a substantially non-zinc containing primer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952657B2 (en) * | 1977-09-08 | 1984-12-20 | 旭化成株式会社 | epoxy resin composition |
-
1979
- 1979-07-19 JP JP9194979A patent/JPS5616565A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5616565A (en) | 1981-02-17 |
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