JPS6315957B2 - - Google Patents
Info
- Publication number
- JPS6315957B2 JPS6315957B2 JP5272580A JP5272580A JPS6315957B2 JP S6315957 B2 JPS6315957 B2 JP S6315957B2 JP 5272580 A JP5272580 A JP 5272580A JP 5272580 A JP5272580 A JP 5272580A JP S6315957 B2 JPS6315957 B2 JP S6315957B2
- Authority
- JP
- Japan
- Prior art keywords
- precondensate
- epoxy resin
- proportion
- epoxy
- polyhydric phenol
- 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
Links
- 239000003822 epoxy resin Substances 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 125000003700 epoxy group Chemical group 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- 239000008199 coating composition Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- ZMEAEUNNMHQAJK-UHFFFAOYSA-N 2-[3-[3-[2,2-diphenylethyl-[(4-methoxyphenyl)methyl]amino]propoxy]phenyl]acetamide Chemical compound C1=CC(OC)=CC=C1CN(CC(C=1C=CC=CC=1)C=1C=CC=CC=1)CCCOC1=CC=CC(CC(N)=O)=C1 ZMEAEUNNMHQAJK-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- -1 amine hydrochlorides Chemical group 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000004714 phosphonium salts Chemical group 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Epoxy Resins (AREA)
- Paints Or Removers (AREA)
Description
本発明は新規な金属防蝕用被覆剤に関するもの
である。さらに詳しくは、特定のキレート反応性
エポキシ樹脂と活性有機硬化剤を含む防蝕塗料に
関するものである。特に錆の認められない鋼板や
脱錆鋼板は勿論のこと、発錆鋼板あるいは下地処
理の不備な鋼板及び亜鉛鋼板、アルミ、ステンレ
ス等に対して、すぐれた密着性及び防蝕性を有す
る塗料用組成物に関するものである。
従来のエポキシ樹脂塗料はそのすぐれた防蝕性
の故に広範囲な分野で金属保護塗料として用いら
れている。しかしそのすぐれた防蝕性を保つには
鋼板面の錆を入念に除去し、下地処理を十分に処
す必要がある。この下地処理を不充分に行つた状
態で塗装した場合、密着不良を起し、防蝕性能を
著るしく低下する。
それ故、鋼板下地処理を簡略化したものあるい
は錆面鋼板に塗装しても密着性が良く、かつ防蝕
性の優れた塗膜が得られればそのメリツトは大き
い。
本発明の目的は、鋼板の下地処理の簡略化した
もの、あるいは錆面鋼板に直接塗装しても、すぐ
れた密着性と耐蝕性を有する塗料用樹脂組成物を
提供することにある。
本発明の塗料用組成物は、必須の成分として、
(A)エポキシ樹脂と隣接水酸基を有する多核多価フ
エノールとを、エポキシ基が残存する割合で、且
つ、生成予備縮合物１分子当たり平均0.05モル以
上の多核多価フエノールが反応して含まれ、予備
縮合物のエポキシ当量が3000以下になる様な割合
で縮合させた予備縮合物と、(B)エポキシ樹脂用活
性有機硬化剤とを含有する。
本発明の組成物の成分である予備縮合物（変性
エポキシ樹脂）(A)はエポキシ樹脂と隣接水酸基を
有する多核多価フエノールとをエポキシ基が残存
する割合で溶剤の存在下又は不存在下及び触媒の
存在下または不存在下に加熱処理することにより
得られる。加熱温度としては特に限定はないが、
エポキシ樹脂の分解が起らず、かつ適当な時間で
反応が終了するべく通常100〜200℃で行うのが良
い。この反応時に触媒として、第３級アミン、４
級アンモニウム塩、４級ホスホニウム塩、アミン
の塩酸塩等を用いることができる。ここで使用す
るエポキシ樹脂としては、
式
The present invention relates to a novel metal corrosion-preventing coating. More specifically, the present invention relates to a corrosion-resistant coating containing a specific chelate-reactive epoxy resin and an active organic curing agent. A paint composition that has excellent adhesion and corrosion resistance, especially for rust-free steel plates and rust-free steel plates, as well as rusted steel plates or poorly prepared steel plates, galvanized steel plates, aluminum, stainless steel, etc. It is about things. Conventional epoxy resin paints are used as metal protective paints in a wide range of fields because of their excellent corrosion resistance. However, in order to maintain its excellent corrosion resistance, it is necessary to carefully remove rust from the surface of the steel plate and thoroughly prepare the surface. If the coating is applied with insufficient surface treatment, poor adhesion will occur and the anticorrosion performance will be significantly reduced. Therefore, it would be of great benefit if a coating film with good adhesion and excellent corrosion resistance could be obtained by simplifying the surface treatment of the steel plate or by coating it on a rusted steel plate. An object of the present invention is to provide a resin composition for coating that has excellent adhesion and corrosion resistance even when the surface treatment of a steel plate is simplified or when it is directly applied to a rusted steel plate. The coating composition of the present invention has as essential components:
(A) an epoxy resin and a polynuclear polyhydric phenol having adjacent hydroxyl groups are reacted in such a proportion that the epoxy group remains, and an average of 0.05 mol or more of polynuclear polyhydric phenol per molecule of the precondensate produced is contained; It contains a precondensate condensed in such a proportion that the epoxy equivalent of the precondensate is 3000 or less, and (B) an active organic curing agent for epoxy resin. The precondensate (modified epoxy resin) (A), which is a component of the composition of the present invention, is prepared by combining an epoxy resin and a polynuclear polyhydric phenol having adjacent hydroxyl groups in the presence or absence of a solvent and in a proportion such that the epoxy groups remain. It can be obtained by heat treatment in the presence or absence of a catalyst. There are no particular limitations on the heating temperature, but
In order to prevent decomposition of the epoxy resin and to complete the reaction in an appropriate time, it is usually preferable to carry out the reaction at a temperature of 100 to 200°C. During this reaction, tertiary amine, 4
Grade ammonium salts, quaternary phosphonium salts, amine hydrochlorides, etc. can be used. The epoxy resin used here has the formula
実施例１〜４及び比較例１〜４で得られた塗板
について、塗膜性能比較試験を行つた。結果を表
１に示す。
A coating film performance comparison test was conducted on the coated plates obtained in Examples 1 to 4 and Comparative Examples 1 to 4. The results are shown in Table 1.
【表】【table】
【表】
試験方法
1) JIS K−5400
2) JIS K−2371
[Table] Test method
1) JIS K-5400
2) JIS K-2371
Claims (1)
フエノールとを、エポキシ基が残存する割合
で、且つ、生成予備縮合物１分子当たり平均
0.05モル以上の多核多価フエノールが反応して
含まれ、予備縮合物のエポキシ当量が3000以下
になる様な割合で縮合させた予備縮合物と、 (B) エポキシ樹脂用活性有機硬化剤 とを含有する塗料組成物。[Scope of Claims] 1. As essential components, (A) an epoxy resin and a polynuclear polyhydric phenol having adjacent hydroxyl groups in a proportion such that epoxy groups remain, and in an average amount per molecule of the precondensate produced.
A precondensate containing 0.05 mol or more of polynuclear polyhydric phenol and condensed in a proportion such that the epoxy equivalent of the precondensate is 3000 or less, and (B) an active organic curing agent for epoxy resin. Coating composition containing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5272580A JPS56149466A (en) | 1980-04-21 | 1980-04-21 | Paint composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5272580A JPS56149466A (en) | 1980-04-21 | 1980-04-21 | Paint composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56149466A JPS56149466A (en) | 1981-11-19 |
| JPS6315957B2 true JPS6315957B2 (en) | 1988-04-06 |
Family
ID=12922890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5272580A Granted JPS56149466A (en) | 1980-04-21 | 1980-04-21 | Paint composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56149466A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60104162A (en) * | 1983-11-11 | 1985-06-08 | Asahi Denka Kogyo Kk | Coating resin composition |
| JPH0545134U (en) * | 1991-11-21 | 1993-06-18 | 三洋工業株式会社 | Floor structure |
-
1980
- 1980-04-21 JP JP5272580A patent/JPS56149466A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56149466A (en) | 1981-11-19 |
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