Fluorine-containing copolymers and aqueous dispersions prepared therefrom

U.S. Patent Number: 5387640

Abstract: Finishers for texthes, leather, paper and mineral substrates consisting of fluorine-containing copolymers and aqueous dispersions prepared therefrom are characterized by the following percentages by weight of the comonomers, relative to the total weight of the copolymers: a) 60 to 90% by weight of perfluoroalkyl-containing (meth)acrylates of the formula b) 1 to 35% by weight of monomers of the formula and/or styrene, acrylonitrile, vinyl acetate or vinyl propionate, c) 4 to 25% by weight of monomers of the formula ##STR1## d) 1 to 15% by weight of monomers of the formula or or ##STR2##

Inventors: Michels; Gisbert (Cologne, DE), Ehlert; Hans-Albert (Leverkusen, DE)

Assignee: Bayer Aktiengesellschaft (Leverkusen, DE)

Application Number: 08/204,842

Issued: 1995-02-07

Expired: 2007-02-07

Classes: 524/544 ; 526/243; 526/245

Field of search: 524/544 526/243,245

Click the image above to view patent images at uspto.gov within a frame.

Click here for the fulltext page on uspto.gov within a frame.