Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1989-12-15
1991-08-06
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526243, 526245, 526248, 526250, 526251, 526252, 526253, 526255, 526247, 528 86, 568669, C06F 1418
Patent
active
050379186
ABSTRACT:
A crosslinked polymer having perfluorocyclobutane rings is prepared in a process comprising the steps of: (a) contacting monomers having two dimerizable perfluorovinyl groups; (b) exposing the monomers to sufficient heat and for a sufficient time that a (linear) polymer containing perfluorocyclobutane rings is formed; and (c) exposing the polymer to sufficient crosslinking initiating means and for a sufficient time such that crosslinking occurs. Crosslinked polymers, so prepared are novel and have tensile strength and other physical proeprties enhanced over the properties of the corresponding linear polymer.
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McDonald Thomas
Michl Paul R.
The Dow Chemical Company
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