MANUFACTURE OF POLYCHLOROPRENE

MANUFACTURE OF POLYCHLOROPRENE

1. A process for the production of gel-free, toluene-soluble, sulfur-modified polychloroprene by emulsion copolymerization of chloroprene, sulfur and, optionally, other monomers copolymerizable with chloroprene and sulfur using a peroxy activator and subsequent working up by stabilization, terminati...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BERUNAA OBUREHITO, BIRUHERUMU GEEBERU, PEETAA BENDORINGU, EBAAHARUTO MIYURAA
Format: Patent
Sprache:eng
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:1. A process for the production of gel-free, toluene-soluble, sulfur-modified polychloroprene by emulsion copolymerization of chloroprene, sulfur and, optionally, other monomers copolymerizable with chloroprene and sulfur using a peroxy activator and subsequent working up by stabilization, termination, degassing and isolation without separate peptization, characterized in that the polymerization is carried out in the presence of dithiocarbamates and/or xanthogenates and the activator is introduced continuously or in portions over the polymerization time.