| abstract |
The present invention relates to a method of producing a cycloalkenamer-containing composition. The polymerization of the cycloalkenamer is stopped by adding the alkyl vinyl ether. Subsequently, compound A is added, wherein compound A has at least one of the characteristics i) or ii): i) primary amino group, secondary amino group, tertiary amino group, thiol group, ester group, carbonate ester group, acetal group, Aldehyde group, carbonyl group, carboxamido group, imido group, oxime group, thioester group, nitrile group, thiocyanate group, primary ketimino group, secondary ketimino group, primary aldimino group, secondary aldimino group, sulfi Nyl group, amine oxide group, carboxyl group, phosphino group, phosphane oxide group, phosphono group, or ii) at least one saturated or unsaturated aliphatic or aromatic heterocyclic ring having 3 to 14 ring atoms, wherein the ring atom is Ring containing at least one carbon atom and at least one atom selected from oxygen, nitrogen and sulfur. Membrane filtration is carried out subsequently. This type of production produces polyalkenamers that are temperature-stable at 180°C. |