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 polymerisation in a solvent solution, characterised in thatthe polymerisation of the monomer(s) generating the polymer is made in the presence of a catalyst, a...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	SENFF HOLGER, GABORIAU CHRISTELLE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 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 GENERAL PROCESSES OF COMPOUNDING INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention relates to a method for preparing a powdered polymer selected from a polyamide, a copolyamide or a copolyesteramide by anionic polymerisation in a solvent solution, characterised in thatthe polymerisation of the monomer(s) generating the polymer is made in the presence of a catalyst, an activator, at least one amide, one of which is always a N, N'-alkylene bis amide, and an inorgani c or organic feedstock, the amount of N, N'-alkylene bis amide added in the medium being determined based on the specific surface area(SSA) desired for the powder particles, the powder particles having an essentially constant diameter or one depending on the desired mean diameter of the powder particles, the powder particles having an essentially constant specific surface area(SSA).