Process of producing ring-opening polymerization products

Details Process of producing ring-opening polymerization products Process of producing ring-opening polymerization products

1976-08-16

1978-03-21

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526113, 526127, 526136, 526169, 526281, 526308, C08F 478

Patent

active

040804917

ABSTRACT:
A process of producing a ring-opening polymerization product of a norbornene derivative containing at least one polar group or aromatic group, a norbornadiene derivative containing at least one of said groups or a cycloolefin using a catalyst system prepared from an organometallic compound and the reaction product of tungsten oxide or molybdenum oxide and a phosphorus pentahalide or phosphorus oxytrihalide or these compounds and other third components. The catalyst system possesses a high polymerization activity.

REFERENCES:
patent: 3798175 (1974-03-01), Streck
patent: 3856758 (1974-12-01), Ueshima
patent: 3859265 (1975-01-01), Hepworth
patent: 3959234 (1976-05-01), Kurosawa

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