PROCESSO PARA INTERRUPCAO DE UMA POLIMERIZACAO E PRODUTO POLIMERICO

PROCESSO PARA INTERRUPCAO DE UMA POLIMERIZACAO E PRODUTO POLIMERICO

A process for shortstopping a free radical polymerization of a conjugated diene and optionally a vinyl-substituted aromatic in an aqueous emulsion, using a hydroperoxide as initiator and a redox activator, comprising a divalent transition metal, a reducing agent and optionally being carried out in t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: JOHANNES ARNOLDUS MARIA WILLEMSEN, SIJTSKE MINNIE DE VRIES
Format: Patent
Sprache:por
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:A process for shortstopping a free radical polymerization of a conjugated diene and optionally a vinyl-substituted aromatic in an aqueous emulsion, using a hydroperoxide as initiator and a redox activator, comprising a divalent transition metal, a reducing agent and optionally being carried out in the presence of a modifier, and being performed by using as sole shortstopping agent an alkali metal polysulphide, and polymeric products obtained therewith.