The pigmentation of powder coatings with the use of block copolymer dispersants

被引：19
|
作者：
Duivenvoorde, FL [1 ]
van Nostrum, CF [1 ]
van der Linde, R [1 ]
机构：
[1] Eindhoven Univ Technol, Lab Polymer Chem & Coatings Technol, NL-5600 MB Eindhoven, Netherlands
来源：
PROGRESS IN ORGANIC COATINGS | 1999年 / 36卷 / 04期
关键词：
powder coatings; pigment dispersion; block copolymers; dispersing agents;
D O I：
10.1016/S0300-9440(99)00054-5
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The dispersing of pigments in powder coatings is a difficult and complicated process. The incomplete dispersion under standard extrusion conditions can be attributed to a combination of poor pigment wetting and insufficient disruption of the pigment a,agglomerates, as a result of the theological properties of the powder coating resin. The use of block copolymer dispersants for improving the pigment dispersion in powder coatings is studied in this project. Novel block copolymer dispersants from 2-vinylpyridine and epsilon-caprolactone have been synthesized and tested. These block copolymers show a high affinity for TiO2 pigments and are capable of improving the stability of a TiO2 dispersion in a polyester powder coating resin. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：225 / 230
页数：6
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