Process for producing cycloolefin addition polymer, catalyst...

Details Process for producing cycloolefin addition polymer, catalyst... Process for producing cycloolefin addition polymer, catalyst...

2011-01-11

2011-01-11

Lu, Caixia (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S133000, C526S134000, C526S160000, C526S165000, C526S308000, C526S943000

Reexamination Certificate

active

07868107

ABSTRACT:
A process for producing a cycloolefin addition polymer comprising addition-polymerizing a cycloolefin in the presence of a catalyst comprising a combination of a specific transition metal compound of Group 4 of the Periodic Table, with an organoaluminum oxy compound, and/or a compound capable of reacting with the Group 4 transition metal compound to form an ion pair. The specific group 4 transition metal compound preferably has a structure such that the group 4 transition metal is bonded to a cyclopentadienyl ring in an η1mode. The above-mentioned catalyst exhibits high activity for both of addition homopolymerization of a cycloolefin and addition copolymerization of a cycloolefin with an α-olefin.

REFERENCES:
patent: 6310164 (2001-10-01), Morizono et al.
patent: 6348555 (2002-02-01), Lai et al.

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