Hyperbranched polymers

The present invention is directed to a process for preparing a hyperbranched polymer having a weight-average molar mass in the range of 30 000-1 000 000, comprising coupling a first prepolymer having at least three functional end groups with a second prepolymer having at least two functional end gro...

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Bibliographische Detailangaben
Hauptverfasser:	ERIK MIKAEL STOLT, NIELS DAN ANDERS SODERGARD
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY CHEWING GUM COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COCOA COCOA PRODUCTS, e.g. CHOCOLATE COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONFECTIONERY CORRECTING FLUIDS DYES FILLING PASTES FOODS OR FOODSTUFFS HUMAN NECESSITIES ICE-CREAM INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES PREPARATION THEREOF SUBSTITUTES FOR COCOA OR COCOA PRODUCTS THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR TREATMENT, NOT COVERED BY OTHER CLASSES USE OF MATERIALS AS ADHESIVES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention is directed to a process for preparing a hyperbranched polymer having a weight-average molar mass in the range of 30 000-1 000 000, comprising coupling a first prepolymer having at least three functional end groups with a second prepolymer having at least two functional end groups by a condensation hydration reaction between the end groups in the prepolymers. According to the present invention the number of arms and/or molar mass of the functionalized prepolymers can accurately be adjusted, thus affecting the properties of the resulting hyperbranched polymer in a desired way. Thus the polymer can be equipped e.g. with hydrophobic and hydrophilic parts. Also, the number of functional end groups, that optionally can be used for further chemical reactions, in the hyperbranched polymer can easily be adjusted to a desired level. The hyperbranched high molar mass polymer can be prepared in high yields without the use of organic solvents or linking compounds, which is advantageous from an environmental as well as an economical point of view.