PROCESS FOR THE PREPARATION OF HIGH-SOLIDS, LOW VISCOSITY LATEX USING SELECTIVE HYDROPHILIC MACRO-RAFT AGENTS

Processes to prepare aqueous polymer dispersions are provided, as well as compositions thereof, which have high solids content (e.g., 50%) with low viscosity. The process uses a selective hydrophilic macro-RAFT agent of formula (I), and is substantially free of surfactants. This process can be used...

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Bibliographic Details
Main Authors TREZZI, FABIO, CHEN, TIFFANY, JAMASBI, HOMAYOUN, KANG, CHANGHEON, DUFILS, PIERRE-EMMANUEL, LEE, DONGCHEEL, MAJMUDAR, SHAILESH, TRAN, AN, ZHOU, LICHANG, WILSON, DAVID JAMES, TIMBART, LAURIANNE
Format Patent
LanguageEnglish
French
Published 22.10.2020
Subjects
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
COMPOSITIONS BASED THEREON
CORRECTING FLUIDS
DYES
FILLING PASTES
INKS
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
ORGANIC MACROMOLECULAR COMPOUNDS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
POLISHES
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:Processes to prepare aqueous polymer dispersions are provided, as well as compositions thereof, which have high solids content (e.g., 50%) with low viscosity. The process uses a selective hydrophilic macro-RAFT agent of formula (I), and is substantially free of surfactants. This process can be used to make latex polymers with good stability, which can be used widely in coatings (e.g., architectural paints, stone paints, industrial coatings, wood coatings, etc.), adhesives, sealants and mastic compositions. L'invention concerne des procédés de préparation de dispersions polymères aqueuses, ainsi que des compositions de ces dernières, qui présentent une teneur élevée en solides (par exemple, 50 %) et une faible viscosité. Le procédé utilise un agent de macro-RAFT hydrophile sélectif de formule (I), et est sensiblement exempt de tensioactifs. Ce procédé peut être utilisé pour fabriquer des polymères de latex présentant une bonne stabilité, qui peuvent être largement utilisés dans des revêtements (par exemple, des peintures architecturales, des peintures sur pierre, des revêtements industriels, des revêtements en bois, etc.), des adhésifs, des agents d'étanchéité et des compositions de mastic.
Bibliography:Application Number: CA20203131760