US 11,504,740 B2 · Water/oil repellent article, method for its production and water/oil repellent composition

Abstract

To provide a water/oil repellent article which presents little burden on the environment, while being excellent in water/oil repellency, washing durability of the water repellency and friction durability of the water repellency; a method for producing such a water/oil repellent article; and a water/oil repellent composition and a water/oil repellent kit to be used for producing such a water/oil repellent article. A water/oil repellent article that comprises a substrate and, as adhered to the surface of the substrate, a fluorinated polymer having structural units based on monomer (a) having a C1-6 perfluoroalkyl group, and a specific fluorinated ether compound; a method for producing the water/oil repellent article, which comprises letting the fluorinated polymer and fluorinated ether compound be adhered to the substrate; a water/oil repellent composition which comprises the fluorinated polymer and fluorinated ether compound; and a water/oil repellent kit which comprises a first container accommodating a first liquid containing the fluorinated polymer and a second container accommodating a second liquid containing the fluorinated ether compound.

Claims10

Dependent claims

A method for producing a water/oil repellent article, comprising:

treating a substrate with a first liquid containing a fluorinated polymer having a structrual unit based on a monomer (a) having a C1-6 perfluoroalkyl group;
and
treating the substrate treated with the first liquid with a second liquid containing a fluorinated ether compound represented by formula (5):
A-U—W—V—B (5),
where A and B are each independently —CF3, —OH, —C(O)OCH3, —C(O)OH or a hydrolyzable silyl group, excluding a case where both A and B are —C(O)OH;
U is a divalent organic group which optionally has fluorine atom(s), an oxygen atom provided only when A is CF3—, or a single bond;
V is a divalent organic group which optionally has fluorine atom(s), or a single bond provided only when B is —CF3;
and W is a group represented by formula (6):
—(CF2CF2O)b(CF2O)c(CF2CF(CF3)O)d(CF(CF3)CF2O)c
(CF2CF2CF2O)f(CF2CF2CF2CF2O)g— (6),
where b, c, d, e, f and g are each independently an integer of from 0 to 180, b+c+d+e+f+g is an integer of from 5 to 400, and the order of the respective oxyperfluoroalkylene units is not limited.

8 more elements

Dependencies are inferred from the claim text.

Water/oil repellent article, method for its production and water/oil repellent composition

Life of this patent

Water/oil repellent article, method for its production and water/oil repellent composition

Life of this patent

Abstract

Claims10