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US 3,939,136 AGranted
Polymerisation of cyclooctene
AssigneeBayer Aktiengesellschaft
InventorsManfred Zimmermann, Guenther Lehnert, Dieter Maertens, Gottfried Pampus
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AssigneeBayer Aktiengesellschaft
InventorsManfred Zimmermann, Guenther Lehnert, Dieter Maertens, Gottfried Pampus
Estimating the term…
Polyoctenamers, in which more than 80% of the C=C-double bonds are in the cis-configuration, with a second order transition temperature of approximately -90.degree.C, a crystallisation temperature of from -30.degree. to +10.degree.C and a melting point of +10 to +40.degree.C and a process for its production, wherein cyclooctene and, optionally, up to 20% by weight, based on the monomer total, of another cyclic olefin are polymerised in an inert organic solvent at temperatures of from -50.degree. to +10.degree.C in the presence of a catalyst of A. a tungsten halide or oxyhalide, B. an alcohol or a halogen substituted alcohol, C. an organometallic compound of aluminium, and D. boron trifluoride or boron trifluoride etherate.
A process for the production of a polyoctenamer in which at least 80% of the C=C -double bonds are in the cis-configuration, wherein cyclooctene is polymerised in an inert organic solvent at a temperature of from -50.degree. to +10.degree.C. in the presence of a catalyst comprising:
Dependencies are inferred from the claim text.