Process for producing cycloolefin random copolymers

Details Process for producing cycloolefin random copolymers Process for producing cycloolefin random copolymers

1991-03-13

1992-05-19

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526281, 5261692, C08F 206, C08F23204, C08F23208

Patent

active

051150522

ABSTRACT:
Disclosed herein is a process for the production of cycloolefin random copolymers comprising copolymerizing ethylene with at least one specific cyclooloefin in a liquid phase in the presence of a catalyst and a solvent in a polymerization vessel, wherein ethylene is copolymerized with the cycloolefin while feeding the cycloolefin or a mixture of the cycloolefin and the solvent onto inside circumferential wall of the polymerization vessel above the gas-liquid interface in the polymerization vessel. The proposed process ensures a smooth copolymerization reaction and a continuous and stable running of the apparatus for a prolonged period of time, and is productive of ethylene-cycloolefin random copolymers which have a uniform quaility and are excellent in heat resistance, heat aging property and various mechanical properties.

REFERENCES:
patent: 3738974 (1973-06-01), Takehisa et al.

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