JP2003176447A - Powder coating material composition - Google Patents
Powder coating material compositionInfo
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- JP2003176447A JP2003176447A JP2001378424A JP2001378424A JP2003176447A JP 2003176447 A JP2003176447 A JP 2003176447A JP 2001378424 A JP2001378424 A JP 2001378424A JP 2001378424 A JP2001378424 A JP 2001378424A JP 2003176447 A JP2003176447 A JP 2003176447A
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- resin
- powder coating
- coating composition
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- epoxy
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は粉体塗料組成物に関
し、更に詳しくは、粉体塗料組成物の製造時に樹脂グレ
ードや硬化系を変更したり、又は、粉体塗料組成物の塗
装時に塗料を樹脂グレードや硬化系の異なる塗料に変更
したりする必要があるが、その際に樹脂グレードや硬化
系が異なる粉体塗料組成物が混入しても、そのような粉
体塗料組成物を用いて形成した塗膜表面にハジキが発生
しない粉体塗料組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder coating composition. More specifically, the resin grade and the curing system are changed during the production of the powder coating composition, or the coating composition is applied during the coating of the powder coating composition. However, even if a powder coating composition with a different resin grade or curing system is mixed in, it is necessary to use such a powder coating composition. The present invention relates to a powder coating composition in which cissing does not occur on the surface of a coating film formed by the method.
【０００２】[0002]
【従来の技術】粉体塗料組成物の製造に使用する樹脂、
硬化剤等については、塗装目的や被塗装物の種類に応じ
て樹脂の種類、樹脂のグレード、硬化系等を適宜選択し
て使用しているので、粉体塗料組成物の製造時に樹脂の
種類、樹脂のグレード、硬化系等を変更したり、又は、
粉体塗料組成物の塗装時に塗料を樹脂の種類、樹脂のグ
レード、硬化系等の異なる塗料に変更したりする必要が
あり、その際に樹脂系は変わらなくとも、使用する樹脂
のグレード及び／又は硬化系が異なる粉体塗料組成物を
同一の製造装置で連続して製造したり、同一の塗装装置
で連続して塗装したりする場合が少なくない。2. Description of the Related Art Resins used in the production of powder coating compositions,
Regarding the curing agent, etc., the type of resin, the grade of the resin, the curing system, etc. are selected and used according to the purpose of coating and the type of object to be coated. , Change resin grade, curing system, or
When coating the powder coating composition, it is necessary to change the coating material to a different coating material such as resin type, resin grade, curing system, etc. Even if the resin system does not change, the grade of the resin used and / or In many cases, powder coating compositions having different curing systems are continuously manufactured by the same manufacturing apparatus or continuously coated by the same coating apparatus.
【０００３】[0003]
【発明が解決しようとする課題】樹脂のグレード及び／
又は硬化系が異なる粉体塗料組成物を同一の製造装置で
連続して製造したり、同一の塗装装置で連続して塗装し
たりする場合に、前に製造又は塗装していた粉体塗料組
成物をその製造装置又は塗装装置から完全に除去するこ
とは極めて困難であるか又はコストがかかり、特に、製
造時の粉砕工程においては、前に使用していた粉体塗料
組成物が残存する可能性が少なくなく、また、塗装時に
おいても、前に使用していた粉体塗料組成物が塗装ガン
の中等に残存する可能性が少なくない。[Problems to be Solved by the Invention] Resin grade and / or
Or, when the powder coating compositions having different curing systems are continuously manufactured by the same manufacturing apparatus or continuously coated by the same coating apparatus, the powder coating composition previously manufactured or coated. It is extremely difficult or costly to completely remove an object from its manufacturing apparatus or coating apparatus, and in particular, in the pulverizing step during manufacturing, the powder coating composition previously used may remain. In addition, the powder coating composition used before is likely to remain in the coating gun even during coating.
【０００４】異なる粉体塗料組成物を同一の製造装置で
連続して製造したり、同一の塗装装置で連続して塗装し
たりする場合でも、樹脂系や硬化系に変化がなく、色を
変えるだけであれば問題は生じない。しかしながら、粉
体塗料組成物の製造時に樹脂グレードや硬化系を変更し
たり、又は、粉体塗料組成物の塗装時に塗料を樹脂グレ
ードや硬化系の異なる塗料に変更したりする場合には、
樹脂グレードや硬化系が異なる粉体塗料組成物が混入
し、そのような粉体塗料組成物を用いて形成した塗膜表
面にハジキが発生するという問題点があった。Even when different powder coating compositions are continuously manufactured by the same manufacturing apparatus or continuously coated by the same coating apparatus, there is no change in the resin system or the curing system and the color is changed. If it's alone, no problem will occur. However, when changing the resin grade and the curing system at the time of manufacturing the powder coating composition, or when changing the coating to a coating having a different resin grade and curing system at the time of coating the powder coating composition,
There has been a problem that powder coating compositions having different resin grades and curing systems are mixed, and cissing occurs on the surface of a coating film formed using such a powder coating composition.
【０００５】本発明は、粉体塗料組成物の製造時に樹脂
グレードや硬化系を変更したり、粉体塗料組成物の塗装
時に塗料を樹脂グレードや硬化系の異なる塗料に変更し
たりして、樹脂グレードや硬化系が異なる粉体塗料組成
物が混入しても、そのような粉体塗料組成物を用いて形
成した塗膜表面にハジキが発生しない粉体塗料組成物を
提供することを目的としている。In the present invention, the resin grade and the curing system are changed during the production of the powder coating composition, and the coating composition is changed to a coating having a different resin grade and the curing system during the coating of the powder coating composition. An object of the present invention is to provide a powder coating composition that does not cause cissing on the surface of a coating film formed using such a powder coating composition, even if powder coating compositions having different resin grades or curing systems are mixed. I am trying.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、上記の目
的を達成するために鋭意研究を行った結果、特定の酸価
を有するカルボキシル基末端熱硬化性ポリエステル樹脂
と、該ポリエステル樹脂用の硬化剤としての、特定のエ
ポキシ当量を有するエポキシ樹脂とからなる組成物にグ
リシジル基含有アクリル樹脂及びカルボン酸基含有アク
リル樹脂からなる群より選ばれる少なくとも１種のアク
リル樹脂を特定量配合することにより上記の目的が達成
されることを見いだし、本発明を完成した。Means for Solving the Problems As a result of intensive studies to achieve the above object, the present inventors have found that a carboxyl group-terminated thermosetting polyester resin having a specific acid value and a polyester resin for the polyester resin As a curing agent for, a composition comprising an epoxy resin having a specific epoxy equivalent and a specific amount of at least one acrylic resin selected from the group consisting of a glycidyl group-containing acrylic resin and a carboxylic acid group-containing acrylic resin. It was found that the above object was achieved by the above, and the present invention was completed.
【０００７】即ち、本発明の粉体塗料組成物は、酸価が
１０〜２５００ｍｇＫＯＨ／ｇのカルボキシル基末端熱
硬化性ポリエステル樹脂、上記ポリエステル樹脂用の硬
化剤としての、エポキシ当量が５０〜２５００のエポキ
シ樹脂、及びグリシジル基含有アクリル樹脂及びカルボ
ン酸基含有アクリル樹脂からなる群より選ばれる少なく
とも１種のアクリル樹脂からなり、アクリル樹脂の配合
量は粉体塗料組成物の０．１〜１０重量％を占める量で
あることを特徴とする。That is, the powder coating composition of the present invention has a carboxyl group-terminated thermosetting polyester resin having an acid value of 10 to 2500 mgKOH / g and an epoxy equivalent of 50 to 2500 as a curing agent for the polyester resin. Epoxy resin, and at least one acrylic resin selected from the group consisting of glycidyl group-containing acrylic resin and carboxylic acid group-containing acrylic resin, the amount of acrylic resin being 0.1 to 10% by weight of the powder coating composition. It is characterized in that the amount occupies.
【０００８】好ましくは、本発明の粉体塗料組成物は、
酸価が１０〜２５００ｍｇＫＯＨ／ｇのカルボキシル基
末端熱硬化性ポリエステル樹脂、エポキシ当量が５０〜
２５００のエポキシ樹脂、及びグリシジル基含有アクリ
ル樹脂及びカルボン酸基含有アクリル樹脂からなる群よ
り選ばれる少なくとも１種のアクリル樹脂からなり、該
ポリエステル樹脂及び該エポキシ樹脂の相対的配合量は
ポリエステル樹脂中の全カルボキシル基数対エポキシ樹
脂中の全エポキシ基数の比が０．５〜１．５：１となる
量であり、アクリル樹脂の配合量は粉体塗料組成物の
０．１〜１０重量％を占める量である。Preferably, the powder coating composition of the present invention comprises
Carboxyl group-terminated thermosetting polyester resin having an acid value of 10 to 2500 mg KOH / g and an epoxy equivalent of 50 to
2500 epoxy resin and at least one acrylic resin selected from the group consisting of glycidyl group-containing acrylic resin and carboxylic acid group-containing acrylic resin, the relative blending amount of the polyester resin and the epoxy resin is The ratio of the total number of carboxyl groups to the total number of epoxy groups in the epoxy resin is 0.5 to 1.5: 1, and the amount of the acrylic resin compounded is 0.1 to 10% by weight of the powder coating composition. Is the amount.
【０００９】[0009]
【発明の実施の形態】以下に、本発明について具体的に
説明する。本発明で使用するカルボキシル基末端熱硬化
性ポリエステル樹脂としては、酸価が１０〜２５００ｍ
ｇＫＯＨ／ｇであるものが好ましい。酸価が１０ｍｇＫ
ＯＨ／ｇ未満であるカルボキシル基末端熱硬化性ポリエ
ステル樹脂を含む粉体塗料組成物用いた場合には、形成
される塗膜の表面に大きな凹凸が生じて、平滑性が低下
する傾向がある。一方、酸価が２５００ｍｇＫＯＨ／ｇ
を超えるカルボキシル基末端熱硬化性ポリエステル樹脂
を含む粉体塗料組成物用いた場合には、形成される塗膜
の機械的強度が低下する傾向がある。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below. The carboxyl group-terminated thermosetting polyester resin used in the present invention has an acid value of 10 to 2500 m.
It is preferably gKOH / g. Acid value is 10mgK
When a powder coating composition containing a carboxyl group-terminated thermosetting polyester resin of less than OH / g is used, large irregularities occur on the surface of the formed coating film, and the smoothness tends to decrease. On the other hand, the acid value is 2500 mgKOH / g
When a powder coating composition containing a carboxyl group-terminated thermosetting polyester resin exceeding the above is used, the mechanical strength of the coating film formed tends to decrease.
【００１０】上記のカルボキシル基末端熱硬化性ポリエ
ステル樹脂を合成するのに用いることのできる酸成分の
主要な例示として、ジカルボン酸、例えば、テレフタル
酸、イソフタル酸、無水フタル酸等の芳香族ジカルボン
酸、アジピン酸、セバシン酸、アゼライン酸、ドデカン
二酸等の脂肪族ジカルボン酸、シクロヘキサンジカルボ
ン酸等の脂環族ジカルボン酸等を挙げることができる。
ポリエステル樹脂をゲル化させない範囲の量で、トリメ
リット酸、ピロメリット酸、トリメシン酸等の三価以上
のカルボン酸をジカルボン酸と併用してもよい。As a major example of the acid component which can be used for synthesizing the above-mentioned carboxyl group-terminated thermosetting polyester resin, dicarboxylic acid, for example, aromatic dicarboxylic acid such as terephthalic acid, isophthalic acid and phthalic anhydride is used. Examples thereof include aliphatic dicarboxylic acids such as adipic acid, sebacic acid, azelaic acid and dodecanedioic acid, and alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid.
A tricarboxylic or higher carboxylic acid such as trimellitic acid, pyromellitic acid or trimesic acid may be used in combination with the dicarboxylic acid in an amount that does not cause the polyester resin to gel.
【００１１】上記のカルボキシル基末端熱硬化性ポリエ
ステル樹脂を合成するのに用いることのできるアルコー
ル成分の主要な例示として、グリコール、例えば、エチ
レングリコール、ネオペンチルグリコール、ジエチレン
グリコール、プロピレングリコール、１，４−ブタンジ
オール、１，６−ヘキサンジオール、１，４−シクロヘ
キサンジメタノール、ビスフェノールＡのエチレンオキ
サイド付加体等を挙げることができる。グリコールとと
もに、ポリエステル樹脂をゲル化させない範囲の量でト
リメチロールプロパン、グリセリン、ペンタエリスリト
ール等の三官能以上のポリオールをグリコールと併用し
てもよい。As major examples of the alcohol component that can be used to synthesize the above-mentioned carboxyl group-terminated thermosetting polyester resin, glycols such as ethylene glycol, neopentyl glycol, diethylene glycol, propylene glycol, 1,4- Examples thereof include butanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol, and an ethylene oxide adduct of bisphenol A. Along with glycol, trifunctional or higher functional polyols such as trimethylolpropane, glycerin, and pentaerythritol may be used together with glycol in an amount that does not cause gelation of the polyester resin.
【００１２】また、上記のカルボキシル基末端熱硬化性
ポリエステル樹脂を合成するのに４−ヒドロキシ安息香
酸、ε−カプロラクトン等のヒドロキシカルボン酸を少
量併用してもよい。本発明で使用するカルボキシル基末
端熱硬化性ポリエステル樹脂は、上記のような諸成分
（それらのエステル形成性誘導体を含む。）を原料と
し、ポリエステル製造の常法によって調製することがで
きる。In addition, a small amount of hydroxycarboxylic acid such as 4-hydroxybenzoic acid or ε-caprolactone may be used in combination to synthesize the above-mentioned carboxyl group-terminated thermosetting polyester resin. The carboxyl group-terminated thermosetting polyester resin used in the present invention can be prepared by using the above-mentioned various components (including their ester-forming derivatives) as a raw material by a conventional polyester production method.
【００１３】本発明で使用するエポキシ樹脂はエポキシ
当量が５０〜２５００のエポキシ樹脂であり、上記のポ
リエステル樹脂の硬化剤として用いられる。エポキシ当
量が５０未満のエポキシ樹脂は液状であり、このような
エポキシ樹脂は粉体塗料組成物の調製には不適切であ
る。また、エポキシ当量が２５００を超えるエポキシ樹
脂は溶融温度が高く、またその溶融物の粘度も高いの
で、粉体塗料組成物の調製には不適切である。The epoxy resin used in the present invention is an epoxy resin having an epoxy equivalent of 50 to 2500 and is used as a curing agent for the above polyester resin. Epoxy resins having an epoxy equivalent of less than 50 are liquid, and such epoxy resins are unsuitable for preparing powder coating compositions. Further, an epoxy resin having an epoxy equivalent of more than 2,500 has a high melting temperature and a high viscosity of the melt, and is therefore unsuitable for the preparation of a powder coating composition.
【００１４】本発明で用いることのできるエポキシ樹脂
として、ビスフェノールＡとエピクロルヒドリンとから
誘導されるエピ・ビス型エポキシ樹脂、トリグリシジル
イソシアヌレート等を挙げることができる。エピ・ビス
型エポキシ樹脂として、東都化成社製ＹＤ−１２８、Ｙ
Ｄ−０１４や、ジャパンエポキシレジン社製のエピコー
ト１００３Ｆ、エピコート１００２等を挙げることがで
き、トリグリシジルイソシアヌレートとしては、チバガ
イギー社製アラルダイトＰＴ８１０等を挙げることがで
きる。Examples of the epoxy resin which can be used in the present invention include epi-bis type epoxy resin derived from bisphenol A and epichlorohydrin, triglycidyl isocyanurate and the like. As epi-bis type epoxy resin, YD-128, Y manufactured by Tohto Kasei Co., Ltd.
D-014, Epicoat 1003F, Epicoat 1002 and the like manufactured by Japan Epoxy Resin Co., Ltd. can be mentioned, and examples of triglycidyl isocyanurate include Araldite PT810 manufactured by Ciba-Geigy.
【００１５】硬化剤であるエポキシ樹脂の配合量につい
ては、ポリエステル樹脂及びエポキシ樹脂の相対的配合
量がポリエステル樹脂中の全カルボキシル基数対エポキ
シ樹脂中の全エポキシ基数の比で０．５〜１．５：１と
なる量であることが好ましい。この範囲外であるとエポ
キシ樹脂とポリエステル樹脂との架橋点が相対的に減少
するため、機械物性等の塗膜性能が低下する傾向があ
る。With respect to the compounding amount of the epoxy resin which is a curing agent, the relative compounding amount of the polyester resin and the epoxy resin is 0.5 to 1 in terms of the ratio of the total number of carboxyl groups in the polyester resin to the total number of epoxy groups in the epoxy resin. The amount is preferably 5: 1. If it is out of this range, the number of cross-linking points between the epoxy resin and the polyester resin is relatively decreased, so that the coating film performance such as mechanical properties tends to be deteriorated.
【００１６】本発明の粉体塗料組成物においては、グリ
シジル基含有アクリル樹脂及び／又はカルボン酸基含有
アクリル樹脂を特定量含有することにより、粉体塗料組
成物の製造時に樹脂グレードや硬化系が異なる粉体塗料
組成物を同一の製造装置で連続して製造したり、粉体塗
料組成物の塗装時に樹脂グレードや硬化系が異なる粉体
塗料組成物を同一の塗装装置で連続して塗装したりし
て、樹脂グレードや硬化系が異なる粉体塗料組成物が混
入しても、そのような粉体塗料組成物を用いて形成した
塗膜表面にハジキが発生しない粉体塗料組成物となる。In the powder coating composition of the present invention, by containing a specific amount of the glycidyl group-containing acrylic resin and / or the carboxylic acid group-containing acrylic resin, the resin grade and the curing system during production of the powder coating composition can be improved. Different powder coating compositions can be continuously manufactured with the same manufacturing equipment, or powder coating compositions with different resin grades and curing systems can be continuously coated with the same coating equipment when coating powder coating compositions. As a result, even if a powder coating composition having a different resin grade or curing system is mixed in, a powder coating composition will not be repelled on the surface of the coating film formed using such a powder coating composition. .
【００１７】本発明の粉体塗料組成物においては、グリ
シジル基含有アクリル樹脂及び／又はカルボン酸基含有
アクリル樹脂の配合量は粉体塗料組成物の０．１〜１０
重量％を占める量であることが好ましい。該アクリル樹
脂の配合量が粉体塗料組成物の０．１質量％未満である
場合にはその添加効果が不十分であり、また、１０質量
％を超える場合には、形成される塗膜の平滑性、物性、
耐食性等の点で問題が生じる傾向がある。In the powder coating composition of the present invention, the blending amount of the glycidyl group-containing acrylic resin and / or the carboxylic acid group-containing acrylic resin is from 0.1 to 10 of the powder coating composition.
It is preferably an amount occupying weight%. When the amount of the acrylic resin compounded is less than 0.1% by mass of the powder coating composition, the effect of addition is insufficient, and when it exceeds 10% by mass, the coating film formed is Smoothness, physical properties,
Problems such as corrosion resistance tend to occur.
【００１８】本発明で用いることのできるグリシジル基
含有アクリル樹脂としては、分子内に少なくとも１つの
グリシジル基を有する化合物であれば特には限定される
ものではない。また、そのグリシジル基は、水素原子の
一部がアルキル基で置換されていてもよい。The glycidyl group-containing acrylic resin that can be used in the present invention is not particularly limited as long as it is a compound having at least one glycidyl group in the molecule. In the glycidyl group, a part of hydrogen atoms may be replaced with an alkyl group.
【００１９】このようなグリシジル基含有アクリル樹脂
として、グリシジル（メタ）アクリレート、２−メチル
グリシジル（メタ）アクリレート、（メタ）アクリル酸
−３，４−エポキシブチル、（メタ）アクリル酸−４，
５−エポキシペンチル、（メタ）アクリル酸−５，５−
エポキシへキシル、（メタ）アクリル酸−４，５−エポ
キシへキシル、（メタ）アクリル酸−６，７−エポキシ
ヘプチル等を挙げることができる。本発明の粉体塗料組
成物においてはこれらのグリシジル基含有アクリル樹脂
の１種を単独で使用することも、２種以上を併用するこ
とも出来る。As such a glycidyl group-containing acrylic resin, glycidyl (meth) acrylate, 2-methylglycidyl (meth) acrylate, (meth) acrylic acid-3,4-epoxybutyl, (meth) acrylic acid-4,
5-epoxypentyl, (meth) acrylic acid-5,5-
Examples thereof include epoxyhexyl, (meth) acrylic acid-4,5-epoxyhexyl, and (meth) acrylic acid-6,7-epoxyheptyl. In the powder coating composition of the present invention, one of these glycidyl group-containing acrylic resins may be used alone, or two or more thereof may be used in combination.
【００２０】本発明で用いることのできるカルボン酸基
含有アクリル樹脂としては、特には限定されず、具体的
には、１分子内に２つ以上のカルボン酸基を有するアク
リル樹脂を挙げることができ、例えば、アクリル酸、メ
タクリル酸等のカルボン酸基含有モノマーを必須モノマ
ーとして、２−ヒドロキシエチル（メタ）アクリレー
ト、２−ヒドロキシプロピル（メタ）アクリレート、４
−ヒドロキシブチルアクリレート、２−ヒドロキシエチ
ル（メタ）アクリレートとポリカプロラクトンとの付加
物（ダイセル化学工業社製、商品名：プラクセルＦＭシ
リーズ）、ポリアルキレングリコールモノ（メタ）アク
リレート類などの水酸基含有モノマー、及び、（メタ）
アクリル酸ｎ−ブチル、（メタ）アクリル酸ｉｓｏ−ブ
チル、（メタ）アクリル酸ｔｅｒｔ−ブチル、スチレ
ン、ビニルトルエン、ｐ−クロロスチレンなどのカルボ
ン酸基と反応しないモノマーを常法に従って重合させた
ものを例示することができる。The carboxylic acid group-containing acrylic resin that can be used in the present invention is not particularly limited, and specific examples thereof include acrylic resins having two or more carboxylic acid groups in one molecule. , For example, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, with carboxylic acid group-containing monomers such as acrylic acid and methacrylic acid as essential monomers.
-Hydroxybutyl acrylate, an adduct of 2-hydroxyethyl (meth) acrylate and polycaprolactone (manufactured by Daicel Chemical Industries, Ltd., trade name: Praxel FM series), hydroxyl group-containing monomers such as polyalkylene glycol mono (meth) acrylates, And (meta)
Polymerization of monomers that do not react with carboxylic acid groups, such as n-butyl acrylate, iso-butyl (meth) acrylate, tert-butyl (meth) acrylate, styrene, vinyltoluene, and p-chlorostyrene, according to a conventional method. Can be illustrated.
【００２１】なお、本発明の粉体塗料組成物において
は、粉体塗料組成物に一般的に用いられている種々の添
加剤、例えば、タレ防止剤、表面調整剤、紫外線吸収
剤、光安定剤、硬化触媒、二酸化チタン、カーボンブラ
ック等の顔料、その他の添加剤を必要に応じて配合する
ことができる。In the powder coating composition of the present invention, various additives generally used in the powder coating composition, such as anti-sagging agent, surface modifier, ultraviolet absorber, and light stabilizer. Agents, curing catalysts, pigments such as titanium dioxide and carbon black, and other additives can be added as necessary.
【００２２】[0022]
【実施例】以下に、実施例、比較例、本発明の粉体塗料
組成物の効果の説明及び対照例に基づいて、本発明を具
体的に説明する。
実施例１〜４及び比較例１〜４
第１表に示す諸成分を第１表に示す組成（質量部）とな
るように配合し、ヘンシェルミキサーで混合し、エクス
トルーダーで混練した後、粉砕し、分級して本発明の粉
体塗料組成物及び比較例の粉体塗料組成物を得た。EXAMPLES The present invention will be specifically described below based on Examples, Comparative Examples, explanation of effects of the powder coating composition of the present invention, and Comparative Examples. Examples 1 to 4 and Comparative Examples 1 to 4 The components shown in Table 1 were blended so as to have the composition (parts by mass) shown in Table 1, mixed with a Henschel mixer, kneaded with an extruder, and then pulverized. Then, it was classified to obtain a powder coating composition of the present invention and a powder coating composition of a comparative example.
【００２３】[0023]
【表１】 [Table 1]
【００２４】第１表中の諸成分の入手先及び特性は以下
の通りである。
※１：日本ユピカ社製、酸価３８ｍｇＫＯＨ／ｇ、
※２：日本ユピカ社製、酸価５８ｍｇＫＯＨ／ｇ、
※３：日本ユピカ社製、水酸基価３８、
※４：日本ユピカ社製、水酸基価３１、
※５：ジャパンエポキシレジン社製、エポキシ当量７６
８、
※６：ヒュルス社製、イソシアネート当量１４．８、
※７：四国化成工業社製、
※８：ジョンソンポリマー社製、酸価７５ｍｇＫＯＨ／
ｇ、
※９：三井化学工業社製、エポキシ当量４７０、
※１０：石原産業社製、
※１１：共栄社化学社製、
※１２：和光純薬工業社製、
※１３：武田薬品工業社製、The sources and characteristics of the components shown in Table 1 are as follows. * 1: Nippon Yupica, acid value 38 mgKOH / g, * 2: Nippon Yupica, acid value 58 mgKOH / g, * 3: Nippon Yupica, hydroxyl value 38, * 4: Japan Yupica, hydroxyl value 31, * 5: made by Japan Epoxy Resins, epoxy equivalent 76
8, * 6: manufactured by Huls, isocyanate equivalent weight 14.8, * 7: manufactured by Shikoku Kasei Co., Ltd. * 8: manufactured by Johnson Polymer, acid value 75 mgKOH /
g, * 9: Mitsui Chemicals, Inc., epoxy equivalent 470, * 10: Ishihara Sangyo, * 11: Kyoeisha Chemicals, * 12: Wako Pure Chemical Industries, * 13: Takeda Pharmaceuticals,
【００２５】本発明の粉体塗料組成物の効果の説明及び
対照例
第２表に示す各々の粉体塗料組成物を第２表に示す組成
（質量部）となるように配合し、ドライブレンドによっ
て混合して粉体塗料組成物Ａ〜Ｋを得た。各粉体塗料組
成物をそれぞれ静電塗装により、０．８ｍｍ厚のリン酸
亜鉛処理鋼板上に乾燥膜厚６０〜８０μｍとなるように
塗装し、１８０℃で２０分間焼付けしてテストピースを
作成した。得られた塗膜表面のハジキの状態について目
視で観察した。ハジキの発生が確認できたものは×、は
じきの発生が確認できなかったものは○とした。それら
の結果は第２表に示す通りであった。Description of the effects of the powder coating composition of the present invention and comparative example Each powder coating composition shown in Table 2 was blended so as to have the composition (parts by mass) shown in Table 2 and dry blended. Were mixed to obtain powder coating compositions AK. Each powder coating composition was applied by electrostatic coating to a zinc phosphate-treated steel sheet having a thickness of 0.8 mm so as to have a dry film thickness of 60 to 80 μm, and baked at 180 ° C. for 20 minutes to prepare a test piece. did. The state of cissing on the surface of the obtained coating film was visually observed. When the occurrence of cissing was confirmed, the mark was X, and when the occurrence of cissing was not confirmed, the mark was ○. The results are shown in Table 2.
【００２６】[0026]
【表２】 [Table 2]
【００２７】[0027]
【発明の効果】本発明の粉体塗料組成物は、粉体塗料組
成物の製造時に樹脂グレードや硬化系を変更したり、粉
体塗料組成物の塗装時に塗料を樹脂グレードや硬化系の
異なる塗料に変更したりして、樹脂グレードや硬化系が
異なる粉体塗料組成物が混入しても、そのような粉体塗
料組成物を用いて形成した塗膜表面にハジキが発生しな
い。EFFECTS OF THE INVENTION The powder coating composition of the present invention has a different resin grade or curing system when the powder coating composition is manufactured, or the coating composition of the powder coating composition is different when coating the powder coating composition. Even if a powder coating composition having a different resin grade or a different curing system is mixed into the coating material or the like, cissing does not occur on the coating film surface formed using such a powder coating composition.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 福田 訓之 愛知県丹羽郡扶桑町柏森甲西屋敷75−１ Ｆターム(参考） 4J038 CG002 CH172 DB002 DB222 DD001 GA06 GA07 MA02 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kuniyuki Fukuda 75-1 Kashiwamori Kosai Yashiki, Fuso-cho, Niwa-gun, Aichi Prefecture F-term (reference) 4J038 CG002 CH172 DB002 DB222 DD001 GA06 GA07 MA02
Claims (2)
ルボキシル基末端熱硬化性ポリエステル樹脂、 上記ポリエステル樹脂用の硬化剤としての、エポキシ当
量が５０〜２５００のエポキシ樹脂、及びグリシジル基
含有アクリル樹脂及びカルボン酸基含有アクリル樹脂か
らなる群より選ばれる少なくとも１種のアクリル樹脂か
らなり、アクリル樹脂の配合量は粉体塗料組成物の０．
１〜１０重量％を占める量であることを特徴とする粉体
塗料組成物。1. A carboxyl group-terminated thermosetting polyester resin having an acid value of 10 to 2500 mgKOH / g, an epoxy resin having an epoxy equivalent of 50 to 2500 as a curing agent for the polyester resin, and a glycidyl group-containing acrylic resin, It is composed of at least one acrylic resin selected from the group consisting of carboxylic acid group-containing acrylic resins, and the blending amount of the acrylic resin is 0.
A powder coating composition, characterized in that the amount is 1 to 10% by weight.
ルボキシル基末端熱硬化性ポリエステル樹脂、 エポキシ当量が５０〜２５００のエポキシ樹脂、及びグ
リシジル基含有アクリル樹脂及びカルボン酸基含有アク
リル樹脂からなる群より選ばれる少なくとも１種のアク
リル樹脂からなり、該ポリエステル樹脂及び該エポキシ
樹脂の相対的配合量はポリエステル樹脂中の全カルボキ
シル基数対エポキシ樹脂中の全エポキシ基数の比が０．
５〜１．５：１となる量であり、アクリル樹脂の配合量
は粉体塗料組成物の０．１〜１０重量％を占める量であ
る請求項１記載の粉体塗料組成物。2. A group consisting of a carboxyl group-terminated thermosetting polyester resin having an acid value of 10 to 2500 mg KOH / g, an epoxy resin having an epoxy equivalent of 50 to 2500, and a glycidyl group-containing acrylic resin and a carboxylic acid group-containing acrylic resin. It is composed of at least one acrylic resin selected, and the relative blending amount of the polyester resin and the epoxy resin is such that the ratio of the total number of carboxyl groups in the polyester resin to the total number of epoxy groups in the epoxy resin is 0.
The powder coating composition according to claim 1, wherein the amount is 5 to 1.5: 1 and the amount of the acrylic resin compounded is 0.1 to 10% by weight of the powder coating composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001378424A JP2003176447A (en) | 2001-12-12 | 2001-12-12 | Powder coating material composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001378424A JP2003176447A (en) | 2001-12-12 | 2001-12-12 | Powder coating material composition |
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| Publication Number | Publication Date |
|---|---|
| JP2003176447A true JP2003176447A (en) | 2003-06-24 |
Family
ID=19186147
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006505639A (en) * | 2002-11-07 | 2006-02-16 | サーフェース スペシャリティーズ、エス．エイ． | Powder coating composition |
| JP2006517001A (en) * | 2003-02-02 | 2006-07-13 | サーフィス スペシャルティーズ イタリー エス．アール．エル． | Powder coating composition |
| JP2007217629A (en) * | 2006-02-20 | 2007-08-30 | Meiji Natl Ind Co Ltd | Highly reflective white powder coating and reflective plate for illuminator using the same |
| JP2007217622A (en) * | 2006-02-20 | 2007-08-30 | Meiji Natl Ind Co Ltd | Powder coating for high-diffusion and high-reflection, and reflective plate using the powder coating |
| US9353286B2 (en) | 2008-01-31 | 2016-05-31 | Allnex Italy Srl | Powder compositions |
| US10604661B2 (en) | 2008-01-31 | 2020-03-31 | Allnex Belgium S.A. | Powder composition |
-
2001
- 2001-12-12 JP JP2001378424A patent/JP2003176447A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006505639A (en) * | 2002-11-07 | 2006-02-16 | サーフェース スペシャリティーズ、エス．エイ． | Powder coating composition |
| JP2006517001A (en) * | 2003-02-02 | 2006-07-13 | サーフィス スペシャルティーズ イタリー エス．アール．エル． | Powder coating composition |
| JP2007217629A (en) * | 2006-02-20 | 2007-08-30 | Meiji Natl Ind Co Ltd | Highly reflective white powder coating and reflective plate for illuminator using the same |
| JP2007217622A (en) * | 2006-02-20 | 2007-08-30 | Meiji Natl Ind Co Ltd | Powder coating for high-diffusion and high-reflection, and reflective plate using the powder coating |
| US9353286B2 (en) | 2008-01-31 | 2016-05-31 | Allnex Italy Srl | Powder compositions |
| US10604661B2 (en) | 2008-01-31 | 2020-03-31 | Allnex Belgium S.A. | Powder composition |
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