Weather stabilization and pigmentation of UV-curable powder coatings

被引：8

作者：

Misev, L ^{[1
]}

Schmid, O

Udding-Louwrier, S

de Jong, ES

Bayards, R

机构：

[1] Ciba Specialty Chem Inc, CH-4002 Basel, Switzerland

[2] DSM Resins bv, NL-8000 AP Zwolle, Netherlands

来源：

JOURNAL OF COATINGS TECHNOLOGY | 1999年 / 71卷 / 891期

关键词：

D O I：

10.1007/BF02697894

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A UV-curable powder coating based on an unsaturated polyester binder and a vinyl ether crosslinker has been tested for weathering resistance. Accelerated and outdoor weathering demonstrate the combined protective action of a UV absorber and a hindered amine light stabilizer (HALS). Successful coatings cure of various colors and shades from organic and inorganic pigments is also reported in this study. Curing performance mainly depends on pigment absorption and particle size. A combination of a bis-acylphosphineoxide and an alpha-hydroxy-acetophenone photoinitiator overcomes limitations imposed by filtering of UV radiation by the pigments and provides balanced cure.

引用

页码：37 / 44

页数：8

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