Surface treatment
AssigneeMicell Technologies, Inc.
InventorsJames B. McClain, Timothy J. Romack, James P. DeYoung
Life of this patent
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Abstract
A method of treating a substrate comprises contacting a surface of said substrate, with a pressurized fluid comprising carbon dioxide and a surface treatment component, the surface treatment component being entrained in the pressurized fluid and contacting the surface so that the surface treatment component lowers the surface tension of the surface of the substrate and treats the substrate. The contacting step is preferably carried out by immersion, the fluid is preferably a liquid or supercritical fluid, the substrate is preferably a metal or fabric substrate, and the surface treatment component is preferably a fluoroacrylate polymer.
Claims13
A method of imparting stain and water resistance to a textile fabric, said method comprising:
- immersing said textile fabric in a pressurized liquid containing carbon dioxide and a surface treatment component, said surface treatment component being entrained in said pressurized liquid and contacting said fabric in an entrained condition to lower the surface tension of said fabric;
- then
- depositing said surface treatment component on said textile fabric;
- and then
- separating said carbon dioxide from said textile fabric so that said surface treatment component remains deposited on said textile fabric;
- wherein said surface treatment component comprises a CO.sub.2 -philic segment, and wherein said CO.sub.2 -philic segment is selected from the group consisting of fluorine-containing segments, siloxane-containing segments, and mixtures thereof.
Dependencies are inferred from the claim text.