Oil- and water-repellent finishes for textiles
AssigneeNano-Tex, LLC
InventorsDavid S. Soane, David A. Offord
Life of this patent
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Abstract
The present invention is directed to a water- and oil repellency-imparting preparation for fibrous and other substrates, the preparation comprising a fluorinated polymer and a tacking monomer, oligomer or polymer containing at least one anhydride functional group or a group capable of forming an anhydride functional group, optionally together with an anhydride-forming catalyst, such as sodium hypophosphite. The preparation can further optionally comprise other additives such as, for example, an extender; a softener; an antioxidant; a surfactant; and/or a plasticizer.
Claims16
A preparation for treating a textile, the preparation comprising i) a fluoropolymer comprising (a) a fluoroaliphatic radical-containing agent, (b) stearyl (meth)acrylate, and (c) a chlorine-containing compound selected from the group consisting of vinylidene chloride, vinyl chloride, 2-chloroethylacrylate, 2-chloroethyl vinyl ether, and 2-chloroethyl vinyl ether;
- and ii) a tacking monomer, oligomer or polymer containing at least one anhydride functional group or a group capable of forming an anhydride functional group.
A method for treating a fibrous substrate, the method comprising:
- exposing a fibrous substrate to an aqueous preparation comprising i) a fluoropolymer comprising (a) a fluoroaliphatic radical-containing agent, (b) stearyl (meth)acrylate, and (c) a chlorine-containing compound selected from the group consisting of vinylidene chloride, vinyl chloride, 2-chloroethylacrylate, 2-chloroethyl vinyl ether, and 2-chloroethyl vinyl ether;
- and ii) a tacking monomer, oligomer or polymer containing at least one anhydride functional group or a group capable of forming an anhydride functional group;
- removing said fibrous substrate from said preparation;
- and
- curing said fibrous substrate;
- to give a fibrous substrate having durable water and oil repellency.
Dependencies are inferred from the claim text.