Water-repellent and oil-repellent treatment
AssigneeDow Corning Toray Silicone Co., Ltd.
InventorsMasaru Ozaki, Isao Ona
Life of this patent
Estimating the term…
Abstract
A treatment agent in which a base component and a crosslinking component contain silicon-bonded perfluoroalkyl groups and curing groups. The components are mutually soluble to homogeneity as a consequence, and this makes possible long-term storage of the mixture of the two components. Moreover, when this treatment agent is used on fibers, textiles, plastics, metals, or porous inorganics and cured, an excellent water repellency and oil repellency are generated because a uniform film is developed.
Claims8
A method of treating a material to impart water-repellency and oil-repellency to said material, which comprises:
- (i) mixing a composition which consists essentially of
- (A) an organopolysiloxane which contains in each molecule at least 2 silicon-bonded groups selected from hydroxyl groups and alkenyl groups, wherein said alkenyl groups have 2 to 6 carbon atoms, and at least 1 silicon-bonded, perfluoroalkyl-containing, monovalent group wherein said perfluoroalkyl group has 6 to 20 carbon atoms;
- (B) an organopolysiloxane which contains in each molecule at least 2 silicon-bonded hydrogen atoms and at least 1 silicon-bonded, perfluoroalkyl-containing monovalent group wherein said perfluoroalkyl group has 6 to 20 carbon atoms;
- and
- (C) an effective amount of a curing catalyst;
- (ii) applying said composition to said material;
- (iii) curing said composition;
- and
- (iv) recovering the water-repellent and oil-repellent material.
Dependencies are inferred from the claim text.