JP2005290360A5 - Powder coating composition - Google Patents
Powder coating composition Download PDFInfo
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- JP2005290360A5 JP2005290360A5 JP2005050749A JP2005050749A JP2005290360A5 JP 2005290360 A5 JP2005290360 A5 JP 2005290360A5 JP 2005050749 A JP2005050749 A JP 2005050749A JP 2005050749 A JP2005050749 A JP 2005050749A JP 2005290360 A5 JP2005290360 A5 JP 2005290360A5
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- epoxy group
- vinyl copolymer
- containing vinyl
- coating composition
- powder coating
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Description
本発明は、優れた塗膜外観、耐擦り傷性を有する塗膜が形成可能な粉体塗料組成物に関する。 The present invention relates to an excellent film appearance, paint film capable of forming a powder coating composition having an abrasion resistance.
各種用途において、塗膜の膜厚を、従来形成されていた塗膜の膜厚よりも小さくした場合においても、塗膜の仕上がり外観に優れ、かつ、耐擦り傷性にも優れる粉体塗料組成物を提供することにある。 In various applications, the thickness of the coating film, in case of less than the thickness of conventional formed have coatings also excellent in finished appearance of the coating film, and, powder coating composition excellent in scratch resistance Is to provide.
さらに検討を進めたところ、前記粉体塗料組成物を構成する０℃以下のガラス転移温度を有するエポキシ基含有ビニル共重合体に、後記する一般式〔Ｉ〕で示されるオルガノシロキサンを使用して得られるオルガノシロキサン側鎖を導入すると、オルガノシロキサンの使用量が比較的少量であっても、特に耐擦り傷性が飛躍的に向上し、かつ貯蔵安定性、塗膜の鮮映性も良好であり、塗膜にハジキが発生するなどの問題も生じないことを見出した。 As a result of further investigations, an organosiloxane represented by the following general formula [I] was used for the epoxy group-containing vinyl copolymer having a glass transition temperature of 0 ° C. or less constituting the powder coating composition. When the resulting organosiloxane side chain is introduced, even when the amount of the organosiloxane used is relatively small, especially the scratch resistance is dramatically improved, and the storage stability and the sharpness of the coating film are also good. The present inventors have found that problems such as the occurrence of repellency in the coating film do not occur.
本発明は、４０℃以上のガラス転移温度を有するエポキシ基含有ビニル共重合体（Ａ）、０℃以下のガラス転移温度を有し、オルガノシロキサン側鎖を有するエポキシ基含有ビニル共重合体（Ｂ）及び多価カルボン酸（Ｃ）を必須の成分として含有する粉体塗料組成物であって、かつ、前記エポキシ基含有ビニル共重合体（Ｂ）中のオルガノシロキサン側鎖が下記一般式〔Ｉ〕
次に、本発明で使用する、０℃以下のガラス転移温度を有し、前記一般式〔Ｉ〕で示されるオルガノシロキサンを使用して得られるオルガノシロキサン側鎖を有するエポキシ基含有ビニル共重合体（Ｂ）について説明する。 Next, the epoxy group-containing vinyl copolymer having a glass transition temperature of 0 ° C. or lower and having an organosiloxane side chain obtained by using the organosiloxane represented by the general formula [I] , used in the present invention. (B) is demonstrated.
当該エポキシ基含有ビニル共重合体（Ｂ）は、一分子中に、エポキシ基を少なくとも一個、好ましくは二個以上有し、かつ前記一般式〔Ｉ〕で示されるオルガノシロキサンとビニル共重合体とがグラフト状に結合した、０℃以下のガラス転移温度を有するビニル共重合体を指称するものである。 The epoxy group-containing vinyl copolymer (B) has at least one, preferably two or more epoxy groups in one molecule, and an organosiloxane and a vinyl copolymer represented by the general formula [I] Refers to a vinyl copolymer having a glass transition temperature of 0 ° C. or lower bonded in a graft form.
エポキシ基含有ビニル共重合体（Ｂ）は、前記一般式〔Ｉ〕で示されるオルガノシロキサンを使用して得られる側鎖を有するもので有れば、その製造方法は、何ら制限されるものではなく、例えば、エポキシ基含有ビニル単量体、前記一般式〔Ｉ〕で示される分子の片末端にアクリロイル基又はメタクリロイル基を有するオルガノシロキサン及びその他のビニル単量体類を用いて共重合するなどの方法により製造することができる。 As long as the epoxy group-containing vinyl copolymer (B) has a side chain obtained by using the organosiloxane represented by the general formula [I] , its production method is not limited at all. Do rather, for example, et epoxy group-containing vinyl monomer, a copolymer using an organosiloxane and other vinyl monomers having one terminal acryloyl or methacryloyl groups of the molecule represented above by the general formula [I] it can be prepared by any be Luna method.
ただし、重合体調整の簡便さを考慮すると、エポキシ基含有ビニル単量体、前記一般式〔Ｉ〕で示される分子の片末端にアクリロイル基又はメタクリロイル基を有するオルガノシロキサンを必須の成分とし、更に必要に応じてその他のビニル単量体類を用いて、これらの各単量体類を有機溶剤中で重合せしめるという方法が好適である。 However, considering the ease of polymer preparation, an epoxy group-containing vinyl monomer, an organosiloxane having an acryloyl group or a methacryloyl group at one end of the molecule represented by the general formula [I], and optionally with other vinyl monomers, a method that each of these monomers polymerizing in an organic solvent is good suitable.
Claims (4)
で示されるオルガノシロキサンを使用して得られる側鎖であることを特徴とする粉体塗料組成物。 Epoxy group-containing vinyl copolymer (A) having a glass transition temperature of 40 ° C. or higher, epoxy group-containing vinyl copolymer (B) having a glass transition temperature of 0 ° C. or lower and having an organosiloxane side chain, and polyvalent A powder coating composition containing a carboxylic acid (C) as an essential component , and the organosiloxane side chain in the epoxy group-containing vinyl copolymer (B) is represented by the following general formula [I]
A powder coating composition comprising a side chain obtained by using an organosiloxane represented by the formula:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005050749A JP3858924B2 (en) | 2004-03-11 | 2005-02-25 | Powder coating composition |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004069045 | 2004-03-11 | ||
| JP2005050749A JP3858924B2 (en) | 2004-03-11 | 2005-02-25 | Powder coating composition |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2005290360A JP2005290360A (en) | 2005-10-20 |
| JP2005290360A5 true JP2005290360A5 (en) | 2006-08-31 |
| JP3858924B2 JP3858924B2 (en) | 2006-12-20 |
Family
ID=35323643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005050749A Active JP3858924B2 (en) | 2004-03-11 | 2005-02-25 | Powder coating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3858924B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7009241B2 (en) * | 2017-02-17 | 2022-01-25 | 三洋化成工業株式会社 | Powder coating composition |
| JP6979791B2 (en) * | 2017-05-26 | 2021-12-15 | 楠本化成株式会社 | Leveling agent for paints using amphipathic block copolymers |
-
2005
- 2005-02-25 JP JP2005050749A patent/JP3858924B2/en active Active
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