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Outerwear fabric treatment

  • US 3,896,251 A
  • Filed: 07/19/1973
  • Issued: 07/22/1975
  • Est. Priority Date: 03/06/1972
  • Status: Expired due to Term
First Claim
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1. THE PROCESS FOR CONFERRING DURABLY LAUNDERABLE AQUEOUS DRY-CLEANABLE REPELLENCY TO OIL AND WATER ON FABRICS CONSISTING SUBSTANTIALLY COMPLETELY OF HYDROPHOBIC SYNTHETIC FIBERS CONSISTING ESSENTIALLY OF APPLYING TO SAID FABRIC A BLEND, IN SUITA ABLE AQUEOUS OR NON-AQUEOUS MEDIUM, IN PROPORTIONS OF 10.90 TO 95:

  • , OF A. FLUOROALIPHATIC RADICAL-CONTAINING SUBSTANTIALLY LINEAR VINYL POLYMER CONTAINING FROM 10 TO 60 PERCENT BY WEIGHT THEREOF OF FLUORINE IN THE FORM OF FLUOROALIPHATIC RADICALS TERMINATING IN CF3 GROUPS, SAID FLUOROALIPHATIC RADICALS CONTAINING AT LEAST THREE FULLY FLUORINATED CARBON ATOMS, AND B. A SOLVENT-SOLUBLE CARBODIMIDE CONSISTING ESSENTIALLY OF FROM 1 TO A PLURALITY OF CARBODIMIDE GROUPS, TERMINAL ORGANIC RADICALS FREE FROM ISOCYANATE-REACTIVE HYDROGEN ATOMS CONNECTED O CARBONIIMIDE AND, WHEN TWO OR MORE CARBODIIMIDE GROUPS ARE PRESENT, POLYVALENT ORGANIC GROUPS, RESIDUES OF POLYISOCYANATES, LINKING SUCCESSIVE CARBODIIMIDE GROUPS, AND THEREAFTER VAPORIZING SAID MEDIUM WHEREBY A COATING OF SAID BLEND IS DEPOSITED ON SAID SYNTHETIC FIBERS.

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