Abstract
Stable cationic latexes were prepd. by the shot-growth method and by use of poly(styrene-co-1-methyl-4-vinylpyridinium bromide) (I) as emulsifier. An increase in co-catalytic activity of the shot-growth latexes in the tetra-Na Co(II) phthalocyaninetetrasulfonate-catalyzed oxidative coupling of 2-mercaptoethanol was found compared with the batch latex system. Although I was successfully applied as emulsifier only a moderate increase in oxidn. rate was found compared with the surfactant-free system. The surface characteristics of both latex systems were investigated by z-potential measurement and conductometric titrns. These measurements suggested the presence of a water-sol. hairy polymer shell
Original language | English |
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Pages (from-to) | 745-749 |
Journal | European Polymer Journal |
Volume | 29 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1993 |