Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1977-04-21
1979-09-18
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526209, 526213, 526272, C08F23208, C08F23206
Patent
active
041683595
ABSTRACT:
Novel copolymers of maleic anhydride and dimers of cyclic conjugated dienes such as cyclopentadiene in which the maleic anhydride/dimer mole ratio ranges from 1/1 to 2/1. The copolymers are prepared by heating the dimer and maleic anhydride at a temperature of 50.degree.-170.degree. C., in the presence of a polar solvent and a free radical precursor which has a half-life of no more than 2 hours at the reaction temperature.
REFERENCES:
patent: 3442872 (1969-05-01), Korbanka
patent: 3449236 (1969-06-01), Engelhart
patent: 3890285 (1975-06-01), Sumita
patent: 3957736 (1976-05-01), Tsuchiya
Borg-Warner Corporation
Michl Paul R.
Schlott Richard J.
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