Method of preparing cyclic olefin copolymer having...

Details Method of preparing cyclic olefin copolymer having... Method of preparing cyclic olefin copolymer having...

2006-08-24

2008-12-23

Teskin, Fred M (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S161000, C526S281000, C526S283000

Reexamination Certificate

active

07468417

ABSTRACT:
The present invention relates to a method of preparing a copolymer having controlled gel content by polymerizing cyclic olefin compound by ROMP (Ring Opening Metathesis Polymerization), and more precisely, a method of preparing cyclic olefin copolymer with high yield, in which a complex prepared by mixing a W salt compound and an organoaluminum halide compound is used as a catalyst in the presence or absence of a molecular weight regulator, and a method of controlling gel formation by regulating the composition of cyclic olefin monomer composing a copolymer as shown in the following Empirical Formula 1 without using a reaction speed regulator or gel formation inhibitor.(Empirical Formula 1)Norbornene=30˜70 weight %Cyclic olefin compound=70˜30 weight %At this time, the cyclic olefin compound presented in the above Empirical Formula 1 is one or more compounds selected from a group consisting of dicyclopentadiene and compounds represented by the following Formula 1.Wherein, m is an integer of 0-1, R1is C1-C5alkyl and R2is H or C1-C10alkyl.

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