Pile fabric treating composition providing soil resistance

• US 3,896,035 A
• Filed: 04/02/1973
• Issued: 07/22/1975
• Est. Priority Date: 04/02/1973
• Status: Expired due to Term

• Current Assignee: Samuel Smith, William J. Schultz
• Original Assignee: Samuel Smith, William J. Schultz
• Inventors: Schultz, William J., Smith, Samuel
• Primary Examiner(s): Lechert, Jr., Stephen J.
• Application Number:
  US05/346,838
• Time in Patent Office: 841 Days
• Field of Search: 117/139.5CQ,121,138.8N 11/138.8F 260/29.2TN 252/8.75,545
• US Class Current: 252/8.62
• CPC Class Codes: C08G 18/2885 containing halogen atoms
• CPC Class Codes: C08G 18/3861 containing sulfonamide and/or sulfonylhydrazide groups
• CPC Class Codes: D06M 13/425 Carbamic or thiocarbamic acids or derivatives thereof, e.g. urethanes unsubstituted carbamic acid D06M11/67
• CPC Class Codes: D06M 13/428 containing fluorine atoms
• CPC Class Codes: D06M 15/576 containing fluorine
• CPC Class Codes: Y10T 428/23986 With coating, impregnation, or bond

Abstract

A durably soil-resistant pile fabric, such as a carpet, is provided which comprises a plurality of organic fibers having thereon a normally solid coating comprising (a) a first phase of a water-insoluble fluoroaliphatic radical free urethane adduct having at least one major transition temperature higher than about 45*C. and melting to a flowable liquid below about 200* C. and (b) a second phase of water-insoluble fluoroaliphatic radical containing urethane adduct having at least one major transition temperature higher than about 45* C. and melting to a flowable liquid below about 200* C.

Claims

1. A TREATING SOLUTION FOR RENDERING PILE FABRICS STAIN-REPELLENT AND OILS-RESISTANT WHILE AVOIDING AN INCREASE IN FLAMMABILITY, CONSISTING ESSENTIALLY OF A DISPERSION IN LIQUID MEDIUM AT A TOTAL SOLIDS CONCENTRATION OF FROM ABUT 0.1 TO ABOUT 50% BY WEIGHT OF THE COMBINATION OF FLUOROALIPHATIC RADICAL-CONTAINING URETHANE ADDUCT AND FLUOROALIPHATIC RADICAL FREE URETHANE ADDUCT IN PROPORTIONS OF FROM ABOUT 1:

1.5 TO ABOUT 4;

1 EACH OF SAID ADDUCTS MELTING TO A FLOWABLE LIQUID AT ABOVE 45*C. AND BELOW ABOUT 200*C.

2. A treating solution according to claim 1 wherein the liquid medium is an aqueous medium.

3. A treating solution according to claim 1 wherein the fluoroaliphatic radical-containing urethane adduct is (C8F17SO2NRC2H4OCONH)2 C6 H3 CH3 in which R is alkyl of 1 to 3 carbon atoms.