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US 5,512,652 AGranted
Fluorinated aldehyde containing polymers
AssigneeE. I. Du Pont de Nemours and Company
InventorWilliam B. Farnham
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Abstract
Fluorinated aldehydes are made by reacting a fluorinated acyl chloride with a silicon hydride in the presence of palladium. Also disclosed are fluorinated ether aldehydes and their polymers, a process for making fluorinated aldehydes polymers using titanium or aluminum alkoxide catalysts, and a process for endcapping fluorinated polymers using perfluoroallyl fluorosulfate or fluorine.
Claims1
A polymer, comprising, the repeat unit ##STR8## wherein:
- Y is fluorine, aryloxy or --OCF.dbd.CF.sub.2 ;
- each X is independently hydrogen or fluorine;
- p is 0 or 1;
- and
- k, m and n are each independently zero or an integer of 1 to 50;
- provided that k+m+n is 2 or more.
3 more elements
Dependencies are inferred from the claim text.