Fluorinated phenoxypropyl vinyl ether polymer
AssigneeE. I. Du Pont de Nemours and Company
InventorsBurton C. Anderson, Ronald E. Uschold
Life of this patent
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Abstract
Fluorinated phenolic polymer, process for its preparation, and use thereof, particularly in the form of a film as a membrane in an electrolytic cell, said polymer consisting essentially of recurring units of (1) --CF.sub.2 CFX-- wherein X in each of the recurring units is independently selected from F, Cl, R and OR wherein R is perfluoroalkyl of 1 to 4 carbon atoms and ##STR1## wherein Y is Cl, R or OR wherein R is perfluoroalkyl of 1 to 4 carbon atoms; M is H, alkali metal or NR.sub.4 ' wherein R' in each of the recurring units is independently selected from H and alkyl of 1 to 6 carbon atoms; x is an average value within the range about 0.2 to about 1.0; n is 1, 2 or 3; and p is 0 or 1, said polymer having 0 to about 21 units of (1) per unit of (2).
Claims12
Fluorinated phenolic polymer consisting essentially of recurring units of
- (1) --CF.sub.2 CFX--wherein X in each of the recurring units is independently selected from F, Cl, R and OR wherein R is perfluoroalkyl of 1 to 4 carbon atoms and ##STR8## wherein Y is Cl, R or OR wherein R is perfluoroalkyl of 1 to 4 carbon atoms;
- M is H, alkali metal or NR'.sub.4 wherein R' in each of the recurring units is independently selected from H and alkyl of 1 to 6 carbon atoms;
- x is an average value within the range about 0.2 to about 1.0;
- n is 1, 2 or 3;
- and p is 0 or 1,
- said polymer having 0 to about 21 units of (1) per unit of (2).
Dependencies are inferred from the claim text.