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US 4,362,785 AGranted
Polymers containing 2,5-oxolanylene segments
AssigneeMinnesota Mining and Manufacturing Company
InventorsWilliam J. Schultz, Alan R. Katritzky
Life of this patent
Estimating the term…
Abstract
Polymers containing recurring 2,5-oxolanylene units wherein at least 60 percent of the units are joined directly to one another so as to provide segments consisting of at least 6 of said units.
Claims2
As an article of manufacture, a normally hydrophobic substrate which has been rendered hydrophilic by application thereto of a coating of a water-insoluble polymer containing recurring 2,5-oxolanylene units of the formula:
- ##STR14## wherein at least 60 percent of said units are joined directly to one another so as to provide segments consisting of at least six of said units;
- and wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are, individually, hydrogen or alkyl groups containing up to 8 carbon atoms each.
Dependencies are inferred from the claim text.