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:
Dec. 06, 2011
Filed:
Jul. 10, 2007
Hsu-nan Huang, Newark, DE (US);
Martial Jean-jacques Pabon, Neauphlette, FR;
Romain Severac, La Roche Guyon, FR;
Lamia Heuze, Bonnieres sur Seine, FR;
Hsu-Nan Huang, Newark, DE (US);
Martial Jean-Jacques Pabon, Neauphlette, FR;
Romain Severac, La Roche Guyon, FR;
Lamia Heuze, Bonnieres sur Seine, FR;
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A method of imparting oil repellency to flexible, fibrous, nonwoven substrates comprising contacting the substrate with an amphoteric fluorochemical copolymer composition prepared from polymerization of monomers in the following percentages by weight: (a) from about 60% to about 90% of a fluorinated (meth)acrylate monomer of Formula 1 which is R-Q-CO—CR═CH, (b) from about 10% to about 25% of an amine substituted (meth)acrylate or (meth)acylamide monomer of Formula 2 which is CH═C(R)COZ(CH)q(CHR)NRR, and (c) from about 1% to about 15% of a substituted (meth)acrylic acid monomer of Formula 3 which is CH=CR(R)—COOH.