Cycloolefin block copolymers and a process for their...

Details Cycloolefin block copolymers and a process for their... Cycloolefin block copolymers and a process for their...

C - Chemistry, Metallurgy

08

G

C08G 61/08 (2006.01) C08F 297/08 (2006.01) C08F 210/02 (2006.01)

Patent

CA 2089952

HOE 92/F 045 Abstract: Cycloolefin block copolymers and a process for their preparation Cycloolefin block copolymers, which in particular are suitable as phase promoters, are preferably obtained by copolymerization of polycyclic olefins, such as norbor- nene, with acyclic olefins, such as ethylene, by, at a molecular weight distribution Mw/Mn of the polymer block forming of less than 2, changing the reaction conditions one or more times in such a way that the monomer/co- monomer ratio changes by at least 10 % or a further polymerizable monomer is metered into the monomer or the monomers.

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