# US 8,771,798 B2 · Anti-fouling compositions with a fluorinated alkyl- or alkoxy- containing polymer or oligomer

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- Number: US 8,771,798 B2
- Document ID: US8771798B2
- Status: Granted
- Kind: B2
- Application number: 13/572,204
- Filed: 2012-08-10
- Published: 2012-12-06
- Granted: 2014-07-08
- Earliest claimed: 2001-03-21
- Assignees: Akzo Nobel N.V.
- Applicants: David Neil Williams; Nigel Ivor Edward Shewring; Adrian James Lee
- Inventors: David Neil Williams; Nigel Ivor Edward Shewring; Adrian James Lee
- Web page: https://patentgrep.com/patent/US8771798B2

## CPC

- C09D 5/1675: {Polyorganosiloxane-containing compositions}
- C09D 5/1662: {Synthetic film-forming substance}
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

An anti-fouling composition which comprises a cured or cross-linked polymer free of perfluoropolyether moieties and a fluid fluorinated alkyl- or alkoxy-containing polymer or oligomer. Preferably, the fluorinated alkyl- or alkoxy-containing polymer or oligomer comprises a repeating unit of the general formula: —{[CFR—(CFR)m—(O)n]p—[CFR—O]q}— wherein n is 0 or 1, m is an integer from 0 to 4, R independently is H, F, Cl, Br, or CF3, and the ratio q/p is 0-10, and the fluorine-free polymer is an organosiloxane-containing polymer comprising a repeating unit of the general structure —[SiR1R2—O]—, wherein R1 and R2 are independently hydrogen, alkyl, aryl, aralkyl, or a vinyl group.

## Claims

### Claim 1

A method of inhibiting fouling of a substrate in an aquatic environment, comprising applying an anti-fouling composition to the substrate, and curing or cross-linking the anti-fouling composition to provide an anti-fouling coating composition which comprises a cured or cross-linked polymer, free of perfluoropolyether moieties, and a fluid fluorinated alkyl- or alkoxy-containing polymer or oligomer having an average-weight molecular weight of 400-40,000 comprising a repeating unit of the general formula:
—{[CFR—(CFR)m-(O)n]p-[CFR—O]q}-
wherein n is 0 or 1, m is an integer from 0 to 4, R independently is H, F, Cl, Br, or CF3, and the ratio q/p is 0-10.

### Claim 2 (depends on 1)

The method of claim 1, wherein R is F or CF3.

### Claim 3 (depends on 1)

The method of claim 1, wherein the repeating unit is —[CF2-CF2-CF2-O]— and/or —[CF(CF3)-CF2-O]—.

### Claim 4 (depends on 1)

The method of claim 1, wherein the repeating unit has the formula —{[CF2-CF2-O]p-[CF2-O]q)- and the ratio q/p is 1.25-2.0.

### Claim 5 (depends on 1)

The method of claim 1, wherein the cured or cross-linked polymer comprises a repeating unit of the general structure —[SiR1R2-O]—, wherein R1 and R2 are independently hydrogen, alkyl, aryl, aralkyl, or a vinyl group.

### Claim 6 (depends on 5)

The method of claim 5, wherein R1 and R2 are independently methyl or phenyl.

### Claim 7 (depends on 5)

The method of claim 5, wherein R1 and R2 are methyl.

### Claim 8 (depends on 1)

The method of claim 1, wherein the cured or cross-linked polymer comprises a cured or cross-linked organosiloxane-containing polymer.

### Claim 9 (depends on 1)

The method of claim 1, wherein the average-weight molecular weight of the fluorinated alkyl- or alkoxy-containing polymer or oligomer is 500-10,000.