PROCEDIMENTO PER LA PRODUZIONE DI PARTICELLE ESPANDIBILI DI POLIMERI STIRENICI

PROCEDIMENTO PER LA PRODUZIONE DI PARTICELLE ESPANDIBILI DI POLIMERI STIRENICI

Process for the production of expandable particles of styrene polymers, having improved processability characteristics, which comprises: i) producing expandable particles of styrene polymers containing from 2 to 20% of an expanding agent incorporated; ii) covering these particles with an antistatic...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: GHIDONI DARIO, ANFUSO FRANCESCO
Format: Patent
Sprache:ita
Schlagworte:
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Beschreibung
Zusammenfassung:Process for the production of expandable particles of styrene polymers, having improved processability characteristics, which comprises: i) producing expandable particles of styrene polymers containing from 2 to 20% of an expanding agent incorporated; ii) covering these particles with an antistatic agent in a quantity of less than 1% by weight; iii) vigorously frictioning the particles in a mixing apparatus in order to heat their surface, in a short time, by simple mechanical friction; iv) discharging the particles thus treated from the mixing apparatus.