JPH07100779B2 - Epoxy resin powder coating with good adhesion - Google Patents
Epoxy resin powder coating with good adhesionInfo
- Publication number
- JPH07100779B2 JPH07100779B2 JP62036408A JP3640887A JPH07100779B2 JP H07100779 B2 JPH07100779 B2 JP H07100779B2 JP 62036408 A JP62036408 A JP 62036408A JP 3640887 A JP3640887 A JP 3640887A JP H07100779 B2 JPH07100779 B2 JP H07100779B2
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- Prior art keywords
- epoxy resin
- powder coating
- weight
- bisphenol
- coating film
- Prior art date
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Description
【発明の詳細な説明】 〔技術分野〕 本発明は、固体表面に対する密着性の良好なエポキシ樹
脂粉体塗料に関するものである。Description: TECHNICAL FIELD The present invention relates to an epoxy resin powder coating material having good adhesion to a solid surface.
従来、電気・電子部品の絶縁用塗料として、エポキシ樹
脂、硬化剤及び充填剤からなるエポキシ樹脂粉体塗料が
広く用いられている。また、このような粉体塗料を、モ
ータや発電機における回転子コイルの固着に用いること
も知られている。即ち、回転子コイルは、その回転によ
り強い遠心力を受けることから、回転子コアから飛び出
し、故障を生ずることがあるが、このようなコイルの飛
び出しを防止するために、コイル全体を樹脂により回転
子コアに固着することが行われている。BACKGROUND ART Conventionally, an epoxy resin powder coating composed of an epoxy resin, a curing agent and a filler has been widely used as an insulating coating for electric / electronic parts. It is also known to use such powder coating for fixing rotor coils in motors and generators. That is, since the rotor coil receives a strong centrifugal force due to its rotation, it may jump out of the rotor core and cause a failure.To prevent such a coil jumping out, the entire coil is rotated by resin. It is fixed to the child core.
しかしながら、従来のエポキシ樹脂粉体塗料は、このよ
うなコイルの固着に用いる場合、その塗膜の密着性が悪
く、コイルを回転子コアに強く接着固定することが困難
であった。However, when the conventional epoxy resin powder paint is used for fixing such a coil, the adhesion of the coating film is poor and it is difficult to strongly bond and fix the coil to the rotor core.
本発明は、従来のエポキシ樹脂粉体塗料に見られる前記
欠点を克服することを目的とする。The present invention aims to overcome the aforementioned drawbacks found in conventional epoxy resin powder coatings.
〔構成〕 本発明によれば、分子量300〜1000のビスフェノールＡ
型エポキシ樹脂と分子量2500〜8000のビスフェノールＡ
型エポキシ樹脂との混合物からなる平均分子量800〜200
0のビスフェノールＡ型エポキシ樹脂と、イミダゾール
系化合物と、ジシアンジアミドと、イミダゾール系化合
物／エポキシ樹脂予備反応物と、充填剤とからなる密着
性の良好なエポキシ樹脂粉体塗料が提供される。[Constitution] According to the present invention, bisphenol A having a molecular weight of 300 to 1000
-Type epoxy resin and bisphenol A with a molecular weight of 2500-8000
Average molecular weight 800-200 consisting of a mixture with epoxy resin
There is provided an epoxy resin powder coating having good adhesion, which comprises a bisphenol A type epoxy resin of 0, an imidazole compound, dicyandiamide, an imidazole compound / epoxy resin pre-reactant, and a filler.
本発明で用いるエポキシ樹脂は、分子量300〜1000のビ
スフェノールＡ型エポキシ樹脂と分子量2500〜8000のビ
スフェノールＡ型エポキシ樹脂との混合物からなる平均
分子量800〜2000、好ましくは1000〜1800の混合エポキ
シ樹脂である。混合エポキシ樹脂の平均分子量が800よ
りも小さいと、得られた粉体塗料は貯蔵中にブロッキン
グを起したり、塗装工程における塗膜の硬化時に塗料が
たれ落ちる等の不都合があり、一方、2000を超えるよう
になると、塗装しても回転子コイル及びコイルとコイル
との間に塗料が含浸しにくく、コイルの回転子コアへの
接着固定化が不充分となる等の不都合が生じる。また、
この混合エポキシ樹脂には、他の型のエポキシ樹脂を混
合することができる。このような他の型のエポキシ樹脂
としては、塗膜の密着性や強靭性や流動性を高めるため
に、ビスフェノールＦ型、ダイマー酸グリシジルエステ
ル型、ポリアルキレングリコールジグリシジルエーテル
型、ビスフェノールＳ型、ヘキサヒドロフタル酸ジグリ
シジルエステル型、ビスフェノールＡジグリシジルエー
テルの水素添加型等のエポキシ樹脂を配合するのが好ま
しく、これらのエポキシ樹脂は全エポキシ樹脂中２〜20
重量％、好ましくは５〜10重量％の割合で用いるのがよ
い。また、塗膜の耐熱性を高めるために、分子内に３個
以上のエポキシ基を有する多官能性エポキシ樹脂を配合
することができる。このようなものとしては、例えば、
ノボラック型（オルソクレゾールノボラック型、フェノ
ールノボラック型等）エポキシ樹脂、トリグリシジルエ
ーテル型樹脂（シアヌル酸やトリフェニルプロパンのエ
ポキシ化合物）、テトラグリシジルエーテル型樹脂（ビ
スレゾルシノールＦやテトラオキシテトラフェニルエタ
ンのエポキシ化合物等）等が挙げられる。この多官能性
エポキシ樹脂は、全エポキシ樹脂中２〜30重量％、好ま
しくは５〜15重量％の割合で用いるのがよい。The epoxy resin used in the present invention is a mixed epoxy resin having an average molecular weight of 800 to 2000, preferably 1000 to 1800, which is a mixture of a bisphenol A type epoxy resin having a molecular weight of 300 to 1000 and a bisphenol A type epoxy resin having a molecular weight of 2500 to 8000. is there. If the average molecular weight of the mixed epoxy resin is less than 800, the resulting powder coating may cause blocking during storage, or the coating may drip during curing of the coating film in the coating process. If it exceeds, the coating material is unlikely to be impregnated between the rotor coil and the coils even if the coating is applied, which causes inconvenience such as insufficient adhesion and fixation of the coil to the rotor core. Also,
Other types of epoxy resins can be mixed with this mixed epoxy resin. Such other types of epoxy resins include bisphenol F type, dimer acid glycidyl ester type, polyalkylene glycol diglycidyl ether type, bisphenol S type, in order to improve the adhesion, toughness and fluidity of the coating film. Hexahydrophthalic acid diglycidyl ester type and bisphenol A diglycidyl ether hydrogenated type epoxy resins are preferably blended, and these epoxy resins account for 2 to 20 of all epoxy resins.
It is advisable to use it in an amount of 5% by weight, preferably 5 to 10% by weight. Further, in order to improve the heat resistance of the coating film, a polyfunctional epoxy resin having 3 or more epoxy groups in the molecule can be blended. As such, for example,
Novolac type (orthocresol novolac type, phenol novolac type, etc.) epoxy resin, triglycidyl ether type resin (cyanuric acid or triphenylpropane epoxy compound), tetraglycidyl ether type resin (bisresorcinol F or tetraoxytetraphenylethane epoxy) Compounds, etc.) and the like. The polyfunctional epoxy resin is used in an amount of 2 to 30% by weight, preferably 5 to 15% by weight, based on the total epoxy resin.
本発明の粉体塗料には、イミダゾール系化合物（硬化剤
Ａという）と、ジシアンジアミド（硬化剤Ｂという）
と、イミダゾール系化合物／エポキシ樹脂予備反応物
（硬化剤Ｃという）とを配合する。イミダゾール系化合
物、ジシアンジアミド、及び前記の予備反応物は、いず
れもエポキシ樹脂用硬化剤として働く。また、ジシアン
ジアミド及び前記の予備反応物は硬化促進剤の働き及び
粉体塗料の硬化塗膜の密着性（接着性）を向上させる働
きも持っている。硬化剤Ａとしては、次の一般式で示さ
れるものが用いられる。The powder coating composition of the present invention includes an imidazole compound (referred to as curing agent A) and dicyandiamide (referred to as curing agent B).
And an imidazole compound / epoxy resin pre-reactant (referred to as curing agent C). The imidazole-based compound, dicyandiamide, and the above-mentioned pre-reacted product all function as a curing agent for epoxy resin. Further, dicyandiamide and the above-mentioned pre-reacted material also have a function of a curing accelerator and a function of improving the adhesion (adhesiveness) of the cured coating film of the powder coating material. As the curing agent A, the one represented by the following general formula is used.
式中、R1はアルキル基又はアリール基であり、好ましく
はメチル基、エチル基、フェニル基であり、特に好まし
くはメチル基である。R2は水素、シアノエチル基又はベ
ンジル基であり、好ましくは水素である。R3は水素又は
メチル基である。 In the formula, R 1 is an alkyl group or an aryl group, preferably a methyl group, an ethyl group or a phenyl group, and particularly preferably a methyl group. R 2 is hydrogen, a cyanoethyl group or a benzyl group, preferably hydrogen. R 3 is hydrogen or a methyl group.
また、本発明で用いるイミダゾール系化合物／エポキシ
樹脂予備反応物において、イミダゾール系化合物として
は、前記一般式（Ｉ）で示したもののうちR2が水素のも
のが用いられ、エポキシ樹脂としては、前記で示したビ
スフェノールＡ型エポキシ樹脂や、ビスフェノールＦ型
エポキシ樹脂、ダイマー酸グリシジルエステル型エポキ
シ樹脂等が用いられる。この予備反応物は、用いるエポ
キシ樹脂のエポキシ当量をＸ、用いるイミダゾール系化
合物のNH基当量をＹとしたとき、0.5＜X/Y＜1.2の範囲
内で製造するのがよく、例えばエポキシ当量190のエポ
キシ樹脂100重量部に対し、イミダゾール系化合物、例
えば２−メチルイミダゾールを36〜54重量部、好ましく
は40〜50重量部を、温度50〜100℃で加熱反応させるこ
とによって得られるものが好ましい。Further, in the imidazole compound / epoxy resin pre-reactant used in the present invention, as the imidazole compound, those in which R 2 is hydrogen among those shown in the general formula (I) are used, and as the epoxy resin, The bisphenol A-type epoxy resin, the bisphenol F-type epoxy resin, the dimer acid glycidyl ester-type epoxy resin, etc. are used. This preliminary reaction product is preferably produced within the range of 0.5 <X / Y <1.2, where X is the epoxy equivalent of the epoxy resin used and Y is the NH group equivalent of the imidazole compound used. With respect to 100 parts by weight of the epoxy resin, 36 to 54 parts by weight, preferably 40 to 50 parts by weight, of an imidazole compound, for example, 2-methylimidazole, is preferably obtained by heating at a temperature of 50 to 100 ° C. .
前記硬化剤Ａは、混合エポキシ樹脂100重量部に対し、
通常0.1〜３重量部、好ましくは0.3〜２重量部の割合で
用いられ、ジシアンジアミド（硬化剤Ｂ）の使用割合
は、混合エポキシ樹脂100重量部に対し通常１〜10重量
部、好ましくは1.5〜７重量部である。また前記予備反
応物（硬化剤Ｃ）は、混合エポキシ樹脂100重量部に対
し、通常0.2〜３重量部、好ましくは0.4〜２重量部の割
合で用いられる。The curing agent A is based on 100 parts by weight of the mixed epoxy resin.
It is usually used in a proportion of 0.1 to 3 parts by weight, preferably 0.3 to 2 parts by weight, and the proportion of dicyandiamide (curing agent B) used is usually 1 to 10 parts by weight, preferably 1.5 to 10 parts by weight, based on 100 parts by weight of the mixed epoxy resin. 7 parts by weight. The preliminary reaction product (curing agent C) is usually used in a proportion of 0.2 to 3 parts by weight, preferably 0.4 to 2 parts by weight, based on 100 parts by weight of the mixed epoxy resin.
本発明の粉体塗料には、充填剤が配合されるが、この充
填剤としては、慣用のもの、例えば、シリカ、炭酸カル
シウム、ドロマイト（Ca・Mg（CO3）２）、ケイ酸カル
シウム、アルミナ、クレー、マイカ、タルク、ガラス繊
維粉末等が使用可能であるが、塗膜切削性の良好な粉体
塗料を得るには、モース硬度４以下の充填剤、例えば、
炭酸カルシウム、ドロマイト、クレー等の使用が好都合
である。また、充填剤は、針状やリン片状のものの使用
よりか、粒状のものの使用の方が、塗膜切削性の良い粉
体塗料を得ることができる。充填剤の平均粒径は、0.5
〜75μｍ、好ましくは３〜50μｍであるが、塗膜切削性
の良好な粉体塗料を得るには、充填剤の粒径はできるだ
け微細なものの方が有利である。A filler is added to the powder coating material of the present invention. As the filler, conventional fillers such as silica, calcium carbonate, dolomite (Ca.Mg (CO 3 ) 2 ) and calcium silicate, Alumina, clay, mica, talc, glass fiber powder and the like can be used, but in order to obtain a powder coating having good coating film machinability, a filler having a Mohs hardness of 4 or less, for example,
The use of calcium carbonate, dolomite, clay, etc. is convenient. Further, the use of a granular filler rather than the use of a needle-shaped or scale-shaped filler can provide a powder coating having a better coating film machinability. The average particle size of the filler is 0.5
The particle size of the filler is as fine as possible in order to obtain a powder coating having good coating film machinability.
本発明の粉体塗料には、前記成分の他、この種粉体塗料
に慣用の補助成分、例えば、アクリル酸エステルオリゴ
マー等のレベリング剤、顔料、各種硬化促進剤等を適量
配合することができる。In addition to the above-mentioned components, the powder coating material of the present invention may be mixed with an appropriate amount of auxiliary components commonly used in this seed powder coating material, for example, leveling agents such as acrylic acid ester oligomers, pigments, various curing accelerators and the like. .
本発明のエポキシ樹脂粉体塗料を調製するには、通常の
方法を用いればよく、例えば、配合成分をミキサー等に
よって混合した後、ニーダ等による混合処理を施すか、
エクストルーダ等による溶融混合処理を施した後、混合
物を冷却固化し、微粉砕すればよい。In order to prepare the epoxy resin powder coating material of the present invention, a usual method may be used, for example, after mixing the blended components with a mixer or the like, a mixing treatment with a kneader or the like, or
After the melt-mixing treatment with an extruder or the like, the mixture may be solidified by cooling and finely pulverized.
本発明の粉体塗料は、金属等の固体表面に対してすぐれ
た密着性を示し、電気・電子部品等の絶縁用粉体塗料と
して好適なものである。特に、本発明の粉体塗料は、モ
ータや発電機の回転子コイルの固着用粉体塗料として有
利に適用される。回転子コイルは、その回転子により強
い遠心力を受けることから、樹脂塗膜により回転子コア
に強く密着させることが重要であるが、本発明の粉体塗
料は、すぐれた密着性を有することから、回転子コイル
を薄膜でかつ強固に回転子コアに固着させることができ
る。また、本発明の粉体塗料において、充填剤として、
モース硬度４以下の非結晶性のものを用いたものは、塗
膜切削性がすぐれていることから、粉体塗料の塗装によ
る回転子コイルの固着後の切削仕上げ工程における切削
能率を高める。即ち、回転子コイルの固着は、コイルの
露出する回転子表面の全面に粉体塗料を塗装した後、そ
の回転子塗装表面をその地肌金属面が露出し、コイル表
面部に塗膜が残るようにバイト刃により薄く切削するこ
とにより行われる。このような切削処理において、塗膜
の切削性が悪いと、切削時に塗膜に割れが生じる問題が
あり、また切削時のバイト刃の摩耗が激しいという問題
がある。本発明の粉体塗料において、前記した如き塗膜
切削性の良好なものを用いることにより、このような問
題は解決される。The powder coating material of the present invention exhibits excellent adhesion to a solid surface such as a metal, and is suitable as an insulating powder coating material for electric / electronic parts. In particular, the powder coating material of the present invention is advantageously applied as a powder coating material for fixing rotor coils of motors and generators. Since the rotor coil is subjected to a strong centrifugal force by the rotor, it is important that the rotor coil is firmly adhered to the rotor core by the resin coating film. However, the powder coating material of the present invention has excellent adhesion. Therefore, the rotor coil can be firmly fixed to the rotor core with a thin film. Further, in the powder coating material of the present invention, as a filler,
A non-crystalline material having a Mohs hardness of 4 or less has excellent coating film machinability, and therefore enhances the cutting efficiency in the cutting finishing step after the rotor coil is fixed by coating the powder coating material. That is, the rotor coil is fixed so that the powder metal coating is applied to the entire surface of the rotor where the coil is exposed, the bare metal surface is exposed on the rotor coating surface, and the coating film remains on the coil surface. It is performed by thinly cutting with a bite blade. In such a cutting treatment, if the coating film has poor machinability, there is a problem in that the coating film is cracked during cutting, and there is a problem that the bite blade is heavily worn during cutting. In the powder coating material of the present invention, such a problem can be solved by using the coating material having good coating machinability as described above.
次に本発明を実施例によりさらに詳細に説明する。 Next, the present invention will be described in more detail with reference to Examples.
実施例 表−１に示す成分組成（重量部）の粉体塗料を調製し、
その性能評価を行い、その結果を表−１に示す。Example A powder coating having the composition (parts by weight) shown in Table 1 was prepared,
The performance was evaluated and the results are shown in Table-1.
なお、表−１に示した配合成分は次の内容を有する。The compounding ingredients shown in Table-1 have the following contents.
エピコート1007…油化シェルエポキシ社製、（ビスフェ
ノールＡ型エポキシ樹脂、分子量2900） エピコート1001…油化シェルエポキシ社製、（ビスフェ
ノールＡ型エポキシ樹脂、分子量900） 硬化剤Ａ…２−メチルイミダゾール 硬化剤Ｂ…ジシアンジアミド 硬化剤Ｃ…２−メチルイミダゾール／エピコート828
（油化シェルエポキシ社製、ビスフェノールＡ型エポキ
シ樹脂、エポキシ当量190）＝45/100（重量比）の予備
反応物 また、粉体塗料の性能評価の方法及び評価基準は次の通
りである。Epicoat 1007 ... made by Yuka Shell Epoxy, (bisphenol A type epoxy resin, molecular weight 2900) Epicoat 1001 ... made by Yuka Shell Epoxy, (bisphenol A type epoxy resin, molecular weight 900) Curing agent A ... 2-Methylimidazole curing agent B ... Dicyandiamide Curing agent C ... 2-Methylimidazole / Epicoat 828
(Oilized Shell Epoxy Co., Ltd., bisphenol A type epoxy resin, epoxy equivalent 190) = 45/100 (weight ratio) as a pre-reactant. Further, the method and evaluation criteria for evaluating the performance of the powder coating material are as follows.
（１）密着性 たて50mmよこ20mm厚さ1mmの軟鋼板を、粉体塗料で150℃
にて塗装し、その塗膜を加熱硬化させた。この塗装物を
室温に冷却し、これを折り曲げたとき塗膜が軟鋼板の屈
曲部から剥離する状況を観察し、次の記号にて密着性を
区分し、◎及び○を密着性「良」と判定した。(1) Adhesion A soft steel plate measuring 50 mm wide, 20 mm wide and 1 mm thick is coated with powder coating at 150 ° C.
And the coating film was cured by heating. After cooling this coated product to room temperature and observing the situation where the coating film peels off from the bent part of the mild steel plate when it is bent, the adhesion is classified by the following symbols, and ◎ and ○ indicate adhesion "good". It was determined.
◎…屈曲部の塗膜は剥離が少なくほとんど脱落していな
いもの。⊙: The coating film on the bent portion is less likely to peel off, and is hardly removed.
○…屈曲部の塗膜は部分的に剥離して脱落しているも
の。○: The coating film on the bent portion is partially peeled off and dropped off.
△…屈曲部の塗膜は大半が剥離して脱落しているもの。Δ: Most of the coating film on the bent portion is peeled off and dropped off.
×…屈曲部の塗膜はほとんど全て剥離して脱落したも
の。X: Almost all the coating film on the bent portion was peeled off and dropped off.
（２）硬化性 粉体塗料のゲルタイムをJIS C−2104によって熱板温度1
50℃で測定し、その値を次の記号によって区分し、◎及
び○は硬化性「良」と判定した。(2) Curability The gel time of the powder coating is set to the hot plate temperature of 1 according to JIS C-2104.
The measurement was performed at 50 ° C., and the values were classified by the following symbols, and ⊚ and ◯ were judged to be curable “good”.
◎…ゲルタイムが40秒以上60秒未満 ○…ゲルタイムが30秒以上40秒未満及び60秒以上65秒未
満 △…ゲルタイムが21秒以上30秒未満及び65秒以上〜70秒 ×…ゲルタイムが21秒未満又は70秒超のもの （３）粉体貯蔵性 粉体塗料を40℃、相対温度80％の恒温恒湿室に７日間貯
蔵したときにゲルタイム（JIS C−2104、熱板温度150
℃）を測定し、その値を粉体製造直後のゲルタイム（上
記と同じ条件）を100としたとき下記の記号によって区
分し、◎及び○を貯蔵性「良」と判定した。◎ ... Gel time is 40 seconds to less than 60 seconds ○ ... Gel time is 30 seconds to less than 40 seconds and 60 seconds to less than 65 seconds △… Gel time is 21 seconds to less than 30 seconds and 65 seconds to 70 seconds ×… Gel time is 21 seconds Less than or more than 70 seconds (3) Powder storability Gel time (JIS C-2104, hot plate temperature 150 when powder coating is stored for 7 days in a constant temperature and humidity chamber at 40 ° C and 80% relative temperature)
C.) was measured, and the value was classified by the following symbols when the gel time immediately after powder production (the same conditions as above) was set to 100, and ⊚ and ◯ were judged to be “good” in storability.
◎…80以上のもの ○…60以上〜80未満のもの △…40以上〜60未満のもの ×…40以下 ◎… 80 or more ○… 60 or more and less than 80 △… 40 or more and less than 60 ×… 40 or less
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−135870（ＪＰ，Ａ) 特開 昭60−203627（ＪＰ，Ａ) 特開 昭61−166825（ＪＰ，Ａ) 特開 昭61−268721（ＪＰ，Ａ) 特開 昭50−153044（ＪＰ，Ａ) 特開 昭54−163948（ＪＰ，Ａ) 特開 昭51−41026（ＪＰ，Ａ) 特開 昭56−18660（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-57-135870 (JP, A) JP-A-60-203627 (JP, A) JP-A 61-166825 (JP, A) JP-A 61- 268721 (JP, A) JP 50-153044 (JP, A) JP 54-163948 (JP, A) JP 51-41026 (JP, A) JP 56-18660 (JP, A)
Claims (1)
ポキシ樹脂と分子量2500〜8000のビスフェノールＡ型エ
ポキシ樹脂との混合物からなる平均分子量800〜2000の
ビスフェノールＡ型混合エポキシ樹脂と、イミダゾール
系化合物と、ジシアンジアミドと、イミダゾール系化合
物／エポキシ樹脂予備反応物と、充填剤とからなる密着
性の良好なエポキシ樹脂粉体塗料。1. A bisphenol A type epoxy resin having an average molecular weight of 800 to 2000, which comprises a mixture of a bisphenol A type epoxy resin having a molecular weight of 300 to 1000 and a bisphenol A type epoxy resin having a molecular weight of 2500 to 8000, and an imidazole compound, Epoxy resin powder coating material comprising dicyandiamide, an imidazole compound / epoxy resin pre-reactant, and a filler and having good adhesion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62036408A JPH07100779B2 (en) | 1987-02-19 | 1987-02-19 | Epoxy resin powder coating with good adhesion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62036408A JPH07100779B2 (en) | 1987-02-19 | 1987-02-19 | Epoxy resin powder coating with good adhesion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63202676A JPS63202676A (en) | 1988-08-22 |
| JPH07100779B2 true JPH07100779B2 (en) | 1995-11-01 |
Family
ID=12469009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62036408A Expired - Lifetime JPH07100779B2 (en) | 1987-02-19 | 1987-02-19 | Epoxy resin powder coating with good adhesion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07100779B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5770706A (en) * | 1995-06-07 | 1998-06-23 | National Starch And Chemical Investment Holding Corporation | Snap-cure epoxy adhesives |
| JP5547364B2 (en) * | 2007-03-19 | 2014-07-09 | 関西ペイント株式会社 | Epoxy powder coating composition for steel and coated steel |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4009223A (en) * | 1974-05-08 | 1977-02-22 | Westinghouse Electric Corporation | Thin film electrostatic epoxy coating powder |
| JPS54163948A (en) * | 1978-06-16 | 1979-12-27 | Fujitsu Ltd | Epoxy resin conposition for powder insulating of metal core circuit base plate |
| CA1183643A (en) * | 1980-12-31 | 1985-03-05 | Marvin L. Kaufman | Coating compositions having dual curing mechanisms |
| JPS60203627A (en) * | 1984-03-28 | 1985-10-15 | Matsushita Electric Ind Co Ltd | Epoxy resin composition |
| JPS61166825A (en) * | 1985-01-18 | 1986-07-28 | Matsushita Electric Ind Co Ltd | Epoxy resin composition |
| JPS61268721A (en) * | 1985-05-24 | 1986-11-28 | Asahi Chem Ind Co Ltd | Curing agent for epoxy resin |
-
1987
- 1987-02-19 JP JP62036408A patent/JPH07100779B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63202676A (en) | 1988-08-22 |
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