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1. (WO2018184852) AQUEOUS DISPERSIONS WITH HIGH STABILITY FOR ADHESIVES AND SEALANTS

Pub. No.:    WO/2018/184852    International Application No.:    PCT/EP2018/057194
Publication Date: Fri Oct 12 01:59:59 CEST 2018 International Filing Date: Thu Mar 22 00:59:59 CET 2018
IPC: C09J 133/08
Applicants: ARKEMA FRANCE
Inventors: LUGLI, Mario
AMADEI, Umberto
FERRETTI, Simona
PREMOLI, Andrea
SAIJA, Leo Mario
Title: AQUEOUS DISPERSIONS WITH HIGH STABILITY FOR ADHESIVES AND SEALANTS
Abstract:
The present invention relates to an aqueous polymeric dispersion comprising emulsion polymerization polymeric particles having a monomeric composition comprising at least one monomer selected from acrylic, vinylicor allylic monomers and further comprising a mixture of surfactants comprising: a) a phosphate surfactant selected from alkoxylated alkyl phosphate ester acids or salts, preferably alkoxylated alkyl phosphate monoester-diacids or salts or from alkoxylatedalkyl diphosphate diester-monoacids or salts or a mixture of alkoxylated alkyl phosphate monoester-diacids or salts and alkoxylated alkyl diphosphate diester-monoacids or salts and at least one of the following surfactants: b) a surfactant selected from alkoxylated alcohol sulfate metal M salts c) a surfactant selected from dialkyl C4-C18 diester and/or C4-C18 monoesters of sulfosuccinate metal M salts and the polymer of said polymeric particles having a glass transition temperature Tg, as determined by DSC at a second passage at a heat rate of 20°C/min, which is lower than 0°C. It also relates to its uses in adhesives or sealants and particularly, in pressure sensitive adhesives with improved stability at low and high temperature and/or under mechanical shear and a method for improving the stability of an aqueous polymer dispersion at low and high temperature and/or under mechanical shear.