Polymers of acid anhydride type norbornene derivatives and a met

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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260874, 526 57, 526 91, 526136, 526142, 526143, 526144, 526250, 526251, 526259, 526263, 526272, C08F 500, C08F 142

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040284824

ABSTRACT:
Polymers or copolymers of acid anhydride type norbornene derivatives and a method of preparing the same, said polymers or copolymers being formed with a reduced viscosity of 0.1 to 20 by ring-opening polymerization of acid anhydride type norbornene derivatives having at least one carboxylic anhydride group or a mixture of said norbornene derivatives and cycloolefins.

REFERENCES:
patent: 3494897 (1970-02-01), Reding
patent: 3546183 (1970-12-01), Vergne
patent: 3557062 (1971-01-01), Vergne
patent: 3856758 (1974-12-01), Ueshima
patent: 3859265 (1975-01-01), Hepworth

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