Copolymers of endo and exo cis-5-norbornene-2,3-dicarboxylic anh

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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526227, 526230, 526283, C08F 2204

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active

039950999

ABSTRACT:
Novel copolymers of the endo and exo cyclic adducts of maleic anhydride and cyclic conjugated dienes such as cyclopentadiene. The copolymers are prepared by heating either of the cyclic adducts in the presence of a free radical precursor, such as a peroxygen compound, at a temperature at which endo-exo isomerization of the adduct occurs.

REFERENCES:
patent: 3330815 (1967-07-01), McKeon et al.
patent: 3494897 (1970-02-01), Reding et al.

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