Ethylene/polycyclic monomer copolymer, process for preparation t

Details Ethylene/polycyclic monomer copolymer, process for preparation t Ethylene/polycyclic monomer copolymer, process for preparation t

1989-10-05

1991-09-17

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5261692, 526280, 359642, 359885, 385141, C08F 3208

Patent

active

050496336

ABSTRACT:
A random copolymer comprised of recurring units derived from ethylene, recurring units derived from a polycyclic monomer of the formula (I): ##STR1## wherein l, m and n are 0 or 1, p is an integer of at least 0, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently represent hydrogen or C.sub.1-10 alkyl, R.sub.3 and R.sub.4 may together form a ring;
and recurring units derived from an optional copolymerizable monomer. The random copolymer is prepared by copolymerizing ethylene with the polycyclic monomer and an optional monomer in a hydrocarbon medium in the presence of a catalyst formed of a hydrocarbon-soluble vanadium compound and a halogen-containing organic aluminum compound. The random copolymer is used for an optical article.

REFERENCES:
patent: 4614778 (1986-09-01), Kajiura et al.
patent: 4935475 (1990-06-01), Kishimura et al.

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