Hindered amine light stabilizers in pigmented coatings

被引：33

作者：

Schaller, Christian ^{[1
]}

Rogez, Daniel ^{[1
]}

Braig, Adalbert ^{[1
]}

机构：

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

来源：

JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH | 2009年 / 6卷 / 01期

关键词：

UV stabilization; Coating stabilization; UV absorbers (UVA); Hindered amine light stabilizers (HALS); Pigmented coatings; Titanium dioxide; UV-ABSORBERS; PHOTOSTABILIZATION; MECHANISMS; PERFORMANCE;

D O I：

10.1007/s11998-008-9130-8

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

It is common practice to combine hindered amine light stabilizers (HALS) with UV absorbers (UVA) for optimal protection of coatings and plastics. The ratio of UVA and HALS strongly depends on the concentration of pigments (acting as UVA) used in the paint; that is, a clearcoatings require higher amounts of UVA, whereas opaque pigmented coatings require higher amounts of HALS. Here, especially basic HALS types can interfere with paint components like, for example, pigments due to acid/base interactions. In this article, we want to discuss the influence of HALS basicity on long-term performance in opaque white pigmented solventborne (SB) and waterborne (WB) coatings for industrial applications in correlation to the quality of the used TiO(2).

引用

页码：81 / 88

页数：8

共 26 条

[1] KINETICS OF PHOTOOXIDATION AND PHOTOSTABILIZATION IN CROSS-LINKED POLYMER-COATINGS [J].