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US 7,247,369 B2Granted
Fluid repellent microporous materials
Assignee3M Innovative Properties Company
InventorsJames S. Mrozinski, Chetan P. Jariwala
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Abstract
Microporous articles formed by thermally induced phase separation from a diluent in combination with a thermoplastic polymer and a fluorochemical additive providing novel fluid repellent articles. Such articles are useful in clothing, barrier membranes, optical films in electronic devices (such as light reflective and dispersive films), and protective garments.
Claims22
A microporous article comprising:
- (a) a crystallizable olefin polymer component;
- and
- (b) a fluorochemical additive comprising a compound the formula:
- wherein each Rf is a fluoroalkyl group of 3 to 12 carbon atoms,
- Q is a divalent linking group, and
- Rh′ is an aliphatic group having an average of 22 or greater carbon atoms.
3 more elements
Dependencies are inferred from the claim text.