Fouling control composition comprising a polymer comprising silyl ester functional groups and quaternary ammonium/phosphonium groups

Patent metadata

Field	Value
Publication number	US-10273323-B2
Application number	US-201515520917-A
Country	US
Kind code	B2
Filing date	Oct 26, 2015
Priority date	Oct 28, 2014
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

The present invention relates to a polymer comprising (a1) silyl ester group(s) and (a2) quaternary ammonium group(s) and/or quaternary phosphonium group(s), said quaternary ammonium groups and/or quaternary phosphonium groups being neutralised by counter-ions, wherein the counter-ions consist of the conjugate base of an acid having an aliphatic, aromatic, or alkaryl hydrocarbyl group. The invention further relates to a fouling control coating composition comprising said polymer, a method of protecting a man-made structure immersed in water from fouling, and a substrate or structure coated with the fouling control coating composition.

First claim

The invention claimed is:

1. A polymer comprising:
(a1) silyl ester group(s), and
(a2) quaternary ammonium group(s) and/or quaternary phosphonium group(s), said quaternary ammonium groups and/or quaternary phosphonium groups being neutralised by counter-ions, wherein the counter-ions consist of the conjugate base of an acid having an aliphatic, aromatic, or alkaryl hydrocarbyl group.

2. The polymer of claim 1 , wherein the silyl ester groups (a1), and/or the quaternary ammonium groups and/or quaternary phosphonium groups (a2), are located on side chains pendant to the polymer backbone.

3. The polymer of claim 1 wherein the polymer is formed from at least one (meth)acrylic monomer comprising the silyl ester group(s) (a1) and at least one (meth) acrylic monomer comprising the quaternary ammonium group(s) and/or quaternary phosphonium group(s) (a2).

4. The polymer of claim 3 wherein the weight ratio of the (meth) acrylic monomers comprising silyl ester groups to (meth)acrylic monomers comprising quaternary ammonium groups and/or quaternary phosphonium groups used to form the polymer ranges from 1:99 to 85:16, preferably from 5:95 to 60:40, more preferably from 12:88 to 47:53.

5. The polymer of a claim 3 wherein the polymer is also formed from one or more other vinyl polymerisable monomers.

6. The polymer claim 1 wherein the conjugate base of the acid comprises an aliphatic, aromatic, or alkaryl hydrocarbyl group comprising 6 or more carbon atoms.

7. The polymer of claim 1 wherein the conjugate base of the acid is a conjugate base of a sulphonic acid.

8. The polymer of claim 1 , wherein the counter-ions of (a2) comprise less than 50 carbon atoms.

9. The polymer of any of claim 1 wherein the silyl ester group(s) (a1) are present on side chain(s) according to the Formula (I):

wherein A is divalent —C(O)— or —S(O) 2 O— group, n is 0 or an integer of 1 to 50, and R 1 , R 2 , R 3 , R 4 , and R 5 are each independently selected from the group consisting of optionally substituted C 1-20 -alkyl, optionally substituted C 1-20 -alkoxy, optionally substituted C 1-20 aryl, and optionally substituted C 1-20 aryloxy.

10. The polymer of claim 9 , wherein n =0 and R 3 , R 4 , and R 5 are the same or different and represent methyl, isopropyl, n-butyl, isobutyl, ethyl, n-propyl, t-butyl or phenyl.

11. A fouling control coating composition comprising the polymer of claim 1 and an ingredient having biocidal properties for aquatic organisms.

12. The fouling control coating composition of claim 11 , further comprising
(a) a rosin material and/or
(b) a non-hydrolysing, film-forming polymer.

13. A method of protecting a man-made structure immersed in water from fouling by applying the fouling control coating composition as defined in claim 11 to the man-made structure, allowing the fouling control coating composition to form a coating and then immersing the coated man-made structure in water.

14. A substrate or structure coated with the fouling control coating composition according to claim 11 .

Assignees

• Akzo Nobel Coatings Int Bv

Inventors

• Ramsden Richard Mark
• Bassarab Paul
• Price Clayton

Classifications

• C09D5/1668

  Vinyl-type polymers · CPC title

• C09D133/14 Primary

  of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen · CPC title

• C09D5/1675

  Polyorganosiloxane-containing compositions · CPC title

• C09D5/14

  Paints containing biocides, e.g. fungicides, insecticides or pesticides (C09D5/16 takes precedence) · CPC title

• C09D5/1637

  Macromolecular compounds · CPC title