VERFAHREN ZUR HERSTELLUNG VON WASSERVERDUENNBAREN BINDEMITTELZUSAMMENSETZUNGEN, MIT DIESEN BINDEMITTELN FORMULIERTE HEISSSIEGELLACKE UND DEREN VERWENDUNG FUER ALUMINIUMFOLIEN

VERFAHREN ZUR HERSTELLUNG VON WASSERVERDUENNBAREN BINDEMITTELZUSAMMENSETZUNGEN, MIT DIESEN BINDEMITTELN FORMULIERTE HEISSSIEGELLACKE UND DEREN VERWENDUNG FUER ALUMINIUMFOLIEN

The invention relates to a process for preparing water-thinnable binder compositions based on thermoplastic copolymers for heat-sealable coatings for aluminium foils, and to heat-sealing lacquers formulated with these binders for the packaging industry. The product properties necessary for practical...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TUEMMLER PETER DR, LABENBACHER ADOLF, TULACS LASZLO
Format: Patent
Sprache:ger
Schlagworte:
ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE
ADHESIVES
CHEMISTRY
COMPOSITIONS BASED THEREON
DYES
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL
ORGANIC MACROMOLECULAR COMPOUNDS
PAINTS
POLISHES
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:The invention relates to a process for preparing water-thinnable binder compositions based on thermoplastic copolymers for heat-sealable coatings for aluminium foils, and to heat-sealing lacquers formulated with these binders for the packaging industry. The product properties necessary for practical application are achieved in a three-stage process in which a copolymer which consists essentially of alkyl (meth)acrylate and contains minor amounts of glycidyl (meth)acrylate is reacted with an equivalent amount of (meth)acrylic acid and then short side chains of (meth)acrylate and (meth)acrylic acid are polymerised onto it. The water-thinnable heat-sealing lacquers formulated therefrom contain from 20 to 30% by weight of polymer, from 15 to 20% by weight of organic solvent and from 50 to 65% by weight of water.