The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 2001
Filed:
Jan. 12, 1998
Dirk M. Coppens, Melsele, BE;
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A method is disclosed of treating a substrate, comprising applying to the substrate a fluorochemical composition comprising fluorochemical copolymer derived from at least one fluorochemical monomer A, at least one monomer B, at least one monomer C and at least one monomer D, wherein the fluorochemical monomer A contains a fluoroaliphatic group and is an ester of an &agr;,&bgr;-ethylenically unsaturated carboxylic acid, the monomer B is an ester of an &agr;,&bgr;-ethylenically unsaturated carboxylic acid, the monomer C is an ethylenically unsaturated dicarboxylic acid anhydride, the monomer D is an ester of an &agr;,&bgr;-ethylenically unsaturated carboxylic acid, the fluorochemical monomer A and the monomers B and C contain only one polymerizable group and monomer D contains, as a second polymerizable group, an ethylenically unsaturated group that has a higher affinity to copolymerize with the monomer C than fluorochemical monomer A or monomers B or D.