PREPARATION METHOD FOR AND APPLICATION OF SOLVENT-FREE AQUEOUS POLYACRYLIC ACID DISPERSION

A method for preparing a solvent-free aqueous polyacrylic acid dispersion containing hydroxyl functional groups, which comprises the steps of: obtaining a polyacrylic acid copolymer by means of initiator-initiated polymerization of a monomer or a mixture of monomers in the presence of a reactive oli...

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Bibliographische Detailangaben
Hauptverfasser:	SUN, Shuangyi, YANG, Shuangyi, YUAN, Zhenyu, JIN, Shenbo, PENG, Lingjing
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	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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Beschreibung
Zusammenfassung:	A method for preparing a solvent-free aqueous polyacrylic acid dispersion containing hydroxyl functional groups, which comprises the steps of: obtaining a polyacrylic acid copolymer by means of initiator-initiated polymerization of a monomer or a mixture of monomers in the presence of a reactive oligomer; adding a neutralizer for neutralization; and dispersing the polyacrylic acid copolymer in water. The reactive oligomer only acts as a diluent in the preparation process of the aqueous polyacrylic acid dispersion, does not participate in any reaction, and can subsequently react with a curing agent when used in combination with the curing agent. Therefore, a solvent-free preparation process of the polyacrylic acid dispersion is realized (wherein the oligomer replaces an organic solvent as a reaction medium), and at the same time the performance of the polyacrylic acid dispersion in a coating is not affected. La présente invention concerne un procédé de préparation d'une dispersion aqueuse d'acide polyacrylique