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US 4,157,358 AGranted
Fluorinated network polymers
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsDonald E. Field, James R. Griffith
Life of this patent
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Abstract
A random fluorinated polymer of the general equation: ##STR1## wherein x is an integer from 1 to 4, y is an integer from 0 to 4, z is 1 more, R' is selected from the group consisting of the 1,3 and the 1,4 isomers of --OC(CF.sub.3).sub.2 .phi.C(CF.sub.3).sub.2 O--, R" is selected from the group consisting of the cis and trans isomers of --O(CF.sub.3).sub.2 CCH.sub.2 CH.dbd.CHC(CF.sub.3).sub.2 O--, and R is either R' or R"; and epoxy resins and urethane resins prepared therefrom.
Claims2
An urethane resin prepared from a polymer of the general formula:
- ##STR5## wherein x is an integer from 1 to 4, y is an integer from 1 to 4, z is greater than 10, R' is selected from the group consisting of the 1,3 and 1,4 isomers of --OC(CF.sub.3).sub.2 .phi.C(CF.sub.3).sub.2 O--, R" is selected from the group consisting of the cis and trans isomers of --O(CF.sub.3).sub.2 CCH.sub.2 CH.dbd.CHC(CF.sub.3).sub.2 O-- and R is either R' or R".
Dependencies are inferred from the claim text.