Water- and oil-repellency imparting ester oligomers comprising perfluoroalkyl moieties
Assignee3M Innovative Properties Company
InventorsChetan P. Jariwala, Cheryl L.S. Elsbernd
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Abstract
Fluorochemical ester compositions comprising one or more compounds or oligomers having at least one long chain fluorine-containing repeatable unit and at least one fluorine-containing terminal group are described. The compositions are useful as coatings. The fluorochemical compositions impart oil and water repellency to the substrate. In other aspects, this invention relates to processes for imparting oil and water repellency characteristics to substrates and articles.
Claims21
A fluorochemical ester composition comprising one or more oligomers wherein each oligomer comprises (i) at least one long chain fluorine-containing repeatable unit and (ii) at least one fluorine-containing terminal group, and wherein said compounds or oligomers comprise the condensation reaction product of:
- (a) one or more fluorinated polyols;
- (b) one or more polyacyl compounds containing 17 or more carbon atoms;
- and
- (c) one or more monofunctional fluorine-containing compounds comprising a functional group that is reactive with the hydroxyl group of said polyol (a) or with the acyl group of the polyacyl compounds (b).
Dependencies are inferred from the claim text.