Perfluorocyclobutane ring-containing polymers
AssigneeThe Dow Chemical Company
InventorsDavid A. Babb, Katherine S. Clement, W. Frank Richey, Bobby R. Ezzell
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Abstract
A process for preparing a polymer having perfluorocyclobutane rings by the steps of (a) contacting monomers having at least two dimerizable perfluorovinyl groups; and (b) exposing the monomers to sufficient heat and for a sufficient time that a polymer containing perfluorocyclobutane rings is formed. The invention includes polymers having a backbone comprising hydrocarbyl groups, perfluorocyclobutane rings and non-carbon atoms and polymers of at least 10,000 molecular weight having repeating units [O-(CFR.sub.f).sub.n -O-perfluorocyclobutane].
Claims21
A process for preparing a polymer having perfluorocyclobutane rings comprising the steps of:
- (a) contacting monomers having at least two dimerizable perfluorovinyl groups represented by Formula I:
- CF.sub.2 .dbd.CF--X--R--(X--CF=CF.sub.2)m
- wherein R represents an unsubstituted or inertly substituted aromatic hydrocarbyl group, each X is any group which linked R and a perfluorovinyl group, and m is an integer of from 1 to about 3;
- and
- (b) exposing the monomers to sufficient heat and for a sufficient time that a polymer containing perfluorocyclobutane rings is formed.
Dependencies are inferred from the claim text.