PROCESS FOR COATING MOULDING MASSES OF EXPANDABLE PARTICULATE STYRENE POLYMERS WITH DISPERSIONS OF KNOWN COATING COMPOSITIONS, AND USE OF THE OBTAINED MOULDING MASSES

PROCESS FOR COATING MOULDING MASSES OF EXPANDABLE PARTICULATE STYRENE POLYMERS WITH DISPERSIONS OF KNOWN COATING COMPOSITIONS, AND USE OF THE OBTAINED MOULDING MASSES

Fine particulate expandable styrene polymers have coatings applied thereto by: (a) introducing the fine particulate expandable styrene polymers into a closed mixing vessel; (b) reducing the pressure in the mixing vessel below atmospheric; (c) preparing dispersions of the coating materials and heatin...

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Bibliographische Detailangaben
Hauptverfasser: OSTERHOFF, HEINZ, TRUKENBROD, KARL, LEITHAUSER, HORST
Format: Patent
Sprache:eng ; ger
Schlagworte:
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Beschreibung
Zusammenfassung:Fine particulate expandable styrene polymers have coatings applied thereto by: (a) introducing the fine particulate expandable styrene polymers into a closed mixing vessel; (b) reducing the pressure in the mixing vessel below atmospheric; (c) preparing dispersions of the coating materials and heating the dispersions to about 30 DEG to 90 DEG C.; and (d) aspirating the heated dispersions of the coating materials into the mixing vessel while simultaneously mixing the dispersions with the particulate styrene polymers to form a coating thereon and drying the coated particles.