Michael-Joachim Dr Brekner

TL;DR: In this paper, the authors describe polycyclic olefins of the formulae I to IV having a viscosity number greater than 20 cm 3 /g and a glass transition temperature above 100°C.

TL;DR: The prodn. of cycloolefin polymers (COC) comprises the polymerisation of (a) 0.1-100 wt.% monomer(s) of formula (I), (II), (III) or (IV), (b) 0-99.9 wt.

TL;DR: Cycloolefin block copolymers and a process for their preparation are obtained by copolymerization of polycyclic olefins, such as norbornene, with acyclic ollifin with ethylene, by, at a molecular weight distribution M w /M n of the polymer block forming of less than 2, changing the reaction conditions one or more times in such a way that the monomer/comonomer ratio changes by at least 10% or a further polymerizable monomer is metered into the monomers as mentioned in this paper.

TL;DR: In this article, a metallocene catalysts were used for the preparation of cycloolefin polymers, such as norbornene or tetracyclodododecene, and copolymers of polycyclic olefins.

TL;DR: A fiber-reinforced cycloolefin polymer material comprises 1 to 99% by weight of reinforcing fibers, in particular glass fibers, and 99 to 1% of a cycloo-lefin copolymer which is built up from a polycyclo-olefin which is derived from norbornene, for example tetracyclododecene, and at least one olefin which was chosen from monocycloolefins having 4 to 12 C atoms (VII) and/or the group of acyclic olefs VIII ##STR