PROCEDE DE PREPARATION DE PARTICULES DE POLYMERES DE STYRENE POUVANT ETRE EXPANSEES ET NOUVEAUX PRODUITS AINSI OBTENUS

PROCEDE DE PREPARATION DE PARTICULES DE POLYMERES DE STYRENE POUVANT ETRE EXPANSEES ET NOUVEAUX PRODUITS AINSI OBTENUS

A process for preparing expandable styrene polymer particles by using magnesium oxide as a suspending agent to prevent agglomeration of styrene polymer particles during impregnation with an expanding agent. The process comprises preparing expandable styrene polymer particles from styrene polymer par...

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Bibliographische Detailangaben
1. Verfasser: TOSHIKI IKEDA, FUMITO YAMAI ET TOMOHIKO ISHIDA
Format: Patent
Sprache:fre
Schlagworte:
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Beschreibung
Zusammenfassung:A process for preparing expandable styrene polymer particles by using magnesium oxide as a suspending agent to prevent agglomeration of styrene polymer particles during impregnation with an expanding agent. The process comprises preparing expandable styrene polymer particles from styrene polymer particles in water, wherein the expanding agent (which does not dissolve styrene polymer particles or slightly swells the particles, and has a boiling point lower than the softening point of the particles) is added in the presence of the suspending agent and the particles being impregnated thereby.