US 10,675,658 B2 · Treated article and method of making the same

Abstract

A method of making a treated article having a metal surface. The method includes treating the metal surface with a primer composition comprising a secondary or tertiary amino-functional compound having at least two independently selected silane groups to provide a primed metal surface and subsequently treating the primed metal surface with a treatment composition comprising a fluorinated compound represented by formula Rf{—X—[Si(Y)3−x(R)x]y}z. An article treated by such a method is also disclosed. The use of a secondary or tertiary amino-functional compound having at least two independently selected silane groups as a primer for a metal surface before treatment with the fluorinated silane and a method of treating a metal surface with a treatment composition including the secondary or tertiary amino-functional compound having at least two independently selected silane groups and certain fluorinated silanes are also disclosed.

Claims20

Dependent claims

A method of making a treated article having a metal surface, the method comprising:

treating the metal surface with a primer composition comprising a secondary or tertiary amino-functional compound having at least two independently selected silane groups to provide a primed metal surface;
and
subsequently treating the primed metal surface with a treatment composition comprising a fluorinated compound represented by formula:
Rf{Q-X′—[Si(Y)3−x(R)x]y}z
wherein:
Rf is a polyfluoropolyether group;
Q is —C(O)—N(R′)—, —C(O)—O—, or —SO2N(R′)—, wherein R′ is hydrogen or alkyl having up to 4 carbon atoms;
and
X′ is a divalent or trivalent organic linking group comprising at least one of alkylene or arylalkylene interrupted by at least one carbamate or urea;
each Y is independently halogen, alkoxy, hydroxyl, acyloxy, polyalkyleneoxy, or aryloxy;
R is an alkyl group having up to 8 carbon atoms or a phenyl group;
x is 0 or 1 or 2;
y is a value from 1 to 8;
and
z is 1 or 2.

12 more elements

Dependencies are inferred from the claim text.

Treated article and method of making the same

Life of this patent

Treated article and method of making the same

Life of this patent

Abstract

Claims20