Abstract
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 agglomerates, as a result of the rheological 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 e-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.
| Original language | English |
|---|---|
| Pages (from-to) | 225-230 |
| Journal | Progress in Organic Coatings |
| Volume | 36 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1999 |