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US 5,847,048 AGranted
Polymers containing fluoroalkoxy side chains
AssigneeE. I. Du Pont de Nemours and Company
InventorAndrew Edward Feiring
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Abstract
This invention concerns polymers, having fluoroalkoxy side chains, which are made by a novel process comprising reacting a polymer containing hydroxyl groups, especially poly(vinyl alcohol), with a fluorinated olefin in the presence of a base. The resulting polymers are useful in coatings, as in optical wave guides, and antireflective coatings and in other optical devices.
Claims15
A polymer, comprising, repeat units of the formulas ##STR2## wherein:
- Y is fluorine, hydrogen, chlorine, perfluoroalkyl, perfluoroalkoxy, or perfluoroalkyl or perfluoroalkoxy containing one or more ether oxygen atoms between alkyl carbon atoms;
- each R.sup.2 is independently hydrogen or --C(O)R.sup.3 ;
- R.sup.3 is hydrocarbyl or substituted hydrocarbyl;
- and provided that:
- a molar ratio of (I):(II) is about 100:1 to about 1:10;
- and
- when all of R.sup.2 is --C(O)R.sup.3, only (I) and (II) are present in said polymer.
4 more elements
Dependencies are inferred from the claim text.