PROCESS FOR PREPARING POLYALKENAMERS FOR PACKAGING APPLICATIONS

The present invention relates to a process for producing cycloalkenamer-containing compositions, comprising the steps of: a) converting at least one cycloalkene by ring-opening metathetic polymerization to obtain a polyalkenamer-containing product mixture, and b) working up the product mixture to re...

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Bibliographic Details
Main Authors Wursche, Roland, Schwager, Florian, Dieter, Adam, Franz, Michlbauer
Format Patent
LanguageEnglish
Published 02.01.2020
Subjects
ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS
CONVEYING
GENERAL PROCESSES OF COMPOUNDING
HANDLING THIN OR FILAMENTARY MATERIAL
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PACKAGES
PACKAGING ELEMENTS
PACKING
PERFORMING OPERATIONS
STORING
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
WORKING-UP
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Summary:The present invention relates to a process for producing cycloalkenamer-containing compositions, comprising the steps of: a) converting at least one cycloalkene by ring-opening metathetic polymerization to obtain a polyalkenamer-containing product mixture, and b) working up the product mixture to remove monomers and oligomers of the cycloalkenes to obtain the polyalkenamer-containing composition by extraction with CO 2 , wherein the extraction comprises at least two stages: b1) an extraction with supercritical CO 2 , then b2) an extraction with gaseous CO 2 and then b3) an extraction with supercritical CO 2 .
Bibliography:Application Number: US201816484711