Hydrogenated ring-opening polymer and process for producing same

Details Hydrogenated ring-opening polymer and process for producing same Hydrogenated ring-opening polymer and process for producing same

1990-11-21

1992-04-21

Schofer, Joseph L.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

526280, C08F 804, C08F23208

Patent

active

051069202

ABSTRACT:
The present invention provides a hydrogenated polycyclic norbornene ring-opening polymer which is excellent in heat resistance, optical characteristics and processability which comprises recurring units represented by the following formula [I] and [II] or these recurring units substituted with alkyl in an amount of at least 10 mol % based on total polymer units and has an intrinsic viscosity [.eta.] of 0.01-20 dl/g measured in toluene at 25.degree. C., with at least 50% of C--C bonds which constitute main chain being single bonds: ##STR1## wherein --denotes a double bond or a single bond.

REFERENCES:
patent: 2130800 (1938-09-01), Holt

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