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:
Feb. 24, 2009
Filed:
May. 08, 2006
Ying Wang, West Chester, PA (US);
Timothy Edward Hopkins, Wilmington, DE (US);
Justine Gabrielle Franchina, Hockessin, DE (US);
Ying Wang, West Chester, PA (US);
Timothy Edward Hopkins, Wilmington, DE (US);
Justine Gabrielle Franchina, Hockessin, DE (US);
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A composition comprising a self-emulsifiable or self-dispersible aqueous solution or dispersion of at least one urea linkage-containing alkoxypolyoxyalkylene fluorocarbamate prepared by contacting (a) at least one polyisocyanate which contains at least three isocyanate groups per molecule, (b) at least one fluorochemical reagent of the formula F(CF2)aCH2CH2OH, wherein a is 4, 6, or 8, or mixtures thereof, provided that a is a maximum of 50% of 8, and (c) at least one hydrophilic, water-solvatable reagent which contains per molecule a single functional group which has at least one reactive Zerewitinoff hydrogen atom, and thereafter with (d) water, the equivalent weight of the polyisocyanate and the reagents (b) and (c) being such that the reagents react with 55% to 95% of the isocyanate groups, and water reacts with all of the remaining isocyanate groups, the composition imparting durable hydrophilicity and stain release properties to a substrate treated therewith is disclosed.