Substrates treated with polyfluoro nitrogen containing organic compounds

Patent 5411766 Issued on May 2, 1995. Estimated Expiration Date:

December 10, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Stainproofing agent and process for its preparation
Patent #: 4504401
Issued on: 03/12/1985
Inventor: Matsuo , et al.

Methylolated and optionally etherified urethanes containing fluoroalkyl ligands
Patent #: 4877540
Issued on: 10/31/1989
Inventor: Engelhardt, et al.

Modified polyurethanes containing perfluoroaliphatic groups and use thereof
Patent #: 5019428
Issued on: 05/28/1991
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Fluorochemical composition for imparting antisoiling protection and lubricity to textile fibers Patent #: 5153046
Issued on: 10/06/1992
Inventor: Murphy

Inventor

Kirchner, Jack R.

Assignee

E. I. Du Pont de Nemours and Company

Application

No. 166331 filed on 12/10/1993

US Classes:

427/393.4, Antisoiling or water repellency increased8/115.51, CHEMICAL MODIFICATION OF TEXTILES OR FIBERS OR PRODUCTS THEREOF8/115.6, With coating, sizing, or lubricating8/115.64, Organic reactant contains element other than C, H, O, N or S8/115.66, Organic reactant contains plural nitrogen atoms nonbonded to each other252/8.62Oil or water repellent or soil resistant or retardant

Examiners

Primary: Lusignan, Michael R.

Foreign Patent References

WO914512 WO. 10/23/1991

International Class

B05D 003/02

Abstract

Process for imparting oil-, water- and soil-repellency and/or soil release properties to a substrate, and substrates so-treated, which comprises applying to the substrate a polyfluoro organic compound having at least 1 urea linkage derived from: (A) at least 1 polyisocyanate which contains at least three isocyanate groups per molecule, (B) at least 1 fluorochemical compound which contains (i) a single functional group having 1 or more Zerewitinoff H's and (ii) at least 2 C's each of which contains at least 2 F's, and (C) sufficient water to react with from about 5% to about 60% of the --NCO groups.