US 5,725,789 A · Aqueous oil and water repellent compositions

Abstract

Oil and water repellent compositions for the treatment of fiber containing substrates such as fabric and the like, substrates treated with these compositions and methods for the treatment of substrates are described. The compositions of the invention comprise (a) a polyalkoxylated polyurethane and (b) a fluorochemical acrylate polymer comprising the polymerized reaction product of a fluorinated acrylate or methacrylate monomer, at least one alkyl acrylate or methacrylate monomer and a polymerizable cationic emulsifier comprising a quaternary amine surfactant. Additionally, (c) a polyalkylene glycol fluorochemical acrylate copolymer and (d) a fluorochemical adipate ester can also be included within the compositions. The above components are blended together within the composition at a weight ratios of (a):(b), or (a)+(c):(b), or (a)+(c)+(d):(b) of from 19:1 to 1:19 and preferably about 1:1. The compositions may be applied to a variety of fiber containing substrates to achieve a broad range of oil and water repellent properties.

Claims35

Dependent claims

A composition for treating fiber containing substrates to impart improved oil and water repellency thereto, comprising:

(a) a polyalkoxylated polyurethane having pendant perfluoroalkyl groups, said polyalkoxylated polyurethane comprising the reaction product of an aliphatic or aromatic tri- or higher order isocyanate, a fluorinated alcohol, amine, or mercaptan, and a poly(oxyalkylene) diol or dithiol;
and
(b) a fluorochemical acrylate polymer comprising the reaction product of a fluorinated acrylate or methacrylate monomer, at least one alkyl acrylate or methacrylate monomer, and a polymerizable cationic emulsifier comprising a quaternary amine surfactant.

A composition for treating fiber containing substrates to impart improved oil and water repellency thereto, comprising:

(a) a polyalkoxylated polyurethane having pendant perfluoroalkyl groups, said polyurethane comprising the reaction product of an aliphatic or aromatic tri- or higher order isocyanate, a fluorinated alcohol, amine, or mercaptan, and a poly(oxyalkylene) diol or dithiol;
(b) a fluorochemical acrylate polymer comprising the polymerized reaction product of a fluorinated acrylate or methacrylate monomer, a first alkyl acrylate or methacrylate monomer, a second alkyl acrylate or methacrylate monomer, and a polymerizable cationic emulsifier comprising a quaternary amine surfactant;
(c) a polyalkylene glycol fluorochemical acrylate copolymer comprising the reaction product of a fluorinated acrylate or methacrylate monomer, polyalkylene glycol acrylate or methacrylate, and polyalkylene glycol diacrylate or dimethacrylate;
and
(d) a fluorochemical adipate ester wherein the above components are blended together in a weight ratio of (a)+(c)+(d):(b) within the composition of from 25:1 to 1:25.

2 more elements

Dependencies are inferred from the claim text.

Aqueous oil and water repellent compositions

Life of this patent

Aqueous oil and water repellent compositions

Life of this patent

Abstract

Claims35