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Effect of styrene units in latices of acrylate copolymers with structured particles on the thickening with associative thickeners
Authors: Quadrat Otakar | Horský Ján | Šňupárek Jaromír
Year: 2004
Type of publication: článek v odborném periodiku
Name of source: Progress in Organic Coatings
Publisher name: Elsevier Science BV
Place: Amsterdam
Page from-to: 166-171
Titles:
Language Name Abstract Keywords
cze Efekt styrenových jednotek v disperzních akrylátových kopolymerech na zahušťování asociativními zahušťovadly Bylo studováno zahušťování akrylátových kopolymerních latexů asociativními zahušťovadly HEUR. Účinnost zahuštění je závislá na obsahu styrenových jednotek v základním řetězci jenom omezeně, největší vliv měl hydrodynamický objem alkalizovaných částic. latices with structured particles; acrylic copolymers containing styrene groups; thickening; associative thickeners
eng Effect of styrene units in latices of acrylate copolymers with structured particles on the thickening with associative thickeners Thickening of structured acrylate latices with butyl acrylate/styrene/2-hydroxyethyl methacrylate/acrylic acid copolymer showed that association of the thickener based on hydrophobically modified ethoxylated polyurethane (HEUR) with the latex particles was considerably affected by hydrophobicity of the particle shell surface controlled by various content of styrene units in the copolymer. In contrast, the thickening mechanism of hydrophobically modified alkali-soluble emulsion (HASE) and, consequently, the viscosity of thickened materials depends predominantly on the excluded volume of swollen thickener particles and the influence of the styrene content is negligible. (C) 2004 Elsevier B.V. All rights reserved. latices with structured particles; acrylic copolymers containing styrene groups; thickening; associative thickeners