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:
Jun. 17, 1986
Filed:
Sep. 11, 1985
Stuart Raynolds, Wilmington, DE (US);
Rudolph G DiFilipantonio, Pennsville, NJ (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Process for imparting oil- and water-repellency to fibrous substrates, particularly polypropylene upholstery fabric, which comprises applying thereto an effective amount of a composition prepared by first combining one or more fluorocarbon dispersions or polyfluoroalkyl-containing polymeric latexes containing an anionic surfactant with a nonionic surfactant having an HLB of 15.+-.3 and then with an amphoteric polymer in an amount sufficient to make the composition slightly cationic, thereby facilitating deposition of said composition to said substrate. An anionic surfactant-containing elastomeric latex may be added so as to impart abrasion resistance.