METHOD FOR PREPARING POLYAMIDE POWDER BY ANIONIC POLYMERISATION

The invention relates to a method for preparing a powdered polymer selected from a polyamide, a copolyamide or a copolyesteramide by anionic polymerization in a solvent solution, characterized in that the polymerization of the monomers) generating said polymer is made in the presence of a catalyst,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SENFF HOLGER, GABORIAU CHRISTELLE
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES FILLING PASTES INKS 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 INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention relates to a method for preparing a powdered polymer selected from a polyamide, a copolyamide or a copolyesteramide by anionic polymerization in a solvent solution, characterized in that the polymerization of the monomers) generating said polymer is made in the presence of a catalyst, an activator, at least one amide one of which is always a N,N′-alkylene bisamide, and an organic or inorganic filler, the amount of N,N′-alkylene bisamide added in the medium being determined based on the specific surface are desired for the powder particles, said powder particles having an essentially constant diameter or one depending on the desired mean diameter of the powder particles, said powder particles having an essentially constant specific surface area.