| Titre : |
Design of polymeric dispersants for waterborne coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Creutz, Auteur ; R. Jérôme, Auteur ; A. W. van der Werf, Auteur ; J. M. Akkerman, Auteur ; G. M. P. Kaptijn, Auteur |
| Année de publication : |
1998 |
| Article en page(s) : |
p. 41-46 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Agents dispersants (chimie)
Copolymères séquencés
Pigments inorganiques
Pigments organiques
Polyméthacrylates
Revêtements -- Additifs
Revêtements en phase aqueuse:Peinture en phase aqueuse
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Block and random copolymers of ammonium methacrylate and dimethylaminoethyl methacrylate have been synthesized and tested as dispersants of various organic and inorganic pigments in formulations for waterborne paints. Blockiness of the co-monomer distribution is a prerequisite for good color characteristics in the final paint. It is however noteworthy that a tapered diblock (one-step anionic synthesis), a diblock copolymer with a regular change in composition from one block to the other one, has an interfacial activity quite comparable to the parent pure diblock copolymer (two-step anionic synthesis). The most interesting observation is that the poly(dimethylaminoethyl methacrylate) anchoring block can impart stability to dispersions of pigments as different as iron oxide, a blue Cu-phthalocyanine pigment, and a red organic pigment based on pyrrole in representative aqueous paint formulations. This type of diblock copolymer is promising for the design of universal dispersants. |
| Note de contenu : |
- EXPERIMENTAL : Mill base - Masstone - White reduction - Characterization |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18019 |
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 70, N° 883 (08/1998) . - p. 41-46
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