US 6,613,860 B1 · Compositions comprising fluorinated polyether silanes for rendering substrates oil and water repellent

Abstract

The present invention provides composition for treating a substrate comprising a homogeneous mixture of: (a) a fluorinated polyether silane of the formula: Rf1—[—Q—SiY3−xR1x]y (I) wherein Rf1 represents a monovalent or divalent polyfluoropolyether group, Q represents an organic divalent linking group, R1 represents a C1-C4 alkyl group, Y represents a hydrolysable group; x is 0 or 1 and y is 1 or 2; (b) an organic or an inorganic acid; (c) water; and (d) an organic solvent. The invention further provides a method of making such a composition and the use thereof to treat substrates to render them oil and water repellent.

Claims13

Dependent claims

Composition for treating a substrate comprising a homogeneous mixture of:

(a) a fluorinated polyether silane of the formula:
Rf1—[—Q—SiY3−xR1x]y (I)
wherein Rf1 represents a monovalent or divalent polyfluoropolyether group, Q represents an organic divalent linking group, R1 represents a C1-C4 alkyl group, Y represents a hydrolysable group;
x is 0 or 1 and y is 1 or 2;
(b) an acid corresponding to the formula:
Rf2—[—(L)m—Z]n (II)
wherein Rf2 represents a mono or divalent polyfluoropolyether group, L represents an organic divalent linking group, Z represents an acid group, m is 0 or 1 and n is 1 or 2;
(c) water and
(d) an organic solvent.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

09/689,013Filed 12 Oct 2000

Granted

2 Sep 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

C04B 41/009
After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone: characterised by the material treated
C03C 17/30
With organic material: with silicon-containing compounds
C04B 41/4933
Applied to the substrate as monomers, i.e. as organosilanes RnSiX4-n, e.g. alkyltrialkoxysilane, dialkyldialkoxysilane: containing halogens, i.e.…
C04B 41/84
With organic materials: compounds having one or more carbon-to-metal of carbon-to-silicon linkages

Compositions comprising fluorinated polyether silanes for rendering substrates oil and water repellent

Life of this patent

Compositions comprising fluorinated polyether silanes for rendering substrates oil and water repellent

Life of this patent

Abstract

Claims13