NZ776335B2

NZ776335B2 - Copper chelate complex compositions for antifouling protection

Info

Publication number: NZ776335B2
Application number: NZ776335A
Authority: NZ
Inventors: Yoshiyuki Iwase; Paul Kappock; Takashi Nakae; Jurgen Riegler; Josef Schroer; Aken Peter Van
Original assignee: Arxada Ag
Filing date: 2019-12-06
Publication date: 2025-05-01

Abstract

The present invention relates to antifouling compositions comprising copper di(ethyl 4,4,4-trifluoroacetoacetate) (Cu(ETFAA)2) that are highly effective against marine biofouling of surfaces of ships and marine structures, their use for inhibiting marine biofouling, as well as antifouling paints comprising said compositions.

Claims

1. An antifouling composition comprising Cu(ETFAA)2 and one or more biocidal agent selected from the group consisting of copper 2-pyridinethioloxide (copper pyrithione, CuPT), zinc 2- pyridinethioloxide (zinc pyrithione, ZnPT), 4,5-dichloron-octylisothiazolinone (DCOIT), cuprous oxide (Cu2O), zinc oxide (ZnO), 4-bromo(4-chlorophenyl) (trifluoromethyl)-1H-pyrrolecarbonitrile (tralopyril), zinc ethane-1,2-diylbis(dithiocarbamate) (zineb), zinc N,N-dimethylcarbamodithioate (ziram), 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron), copper(I) thiocyanate (CuSCN), 4-[1-(2,3-dimethylphenyl)ethyl]-1H-imidazole (medetomidine), triazines, fluanids and 2,4,5,6-tetrachloroisophthalonitrile (chlorothalonil).

2. The antifouling composition of claim 1, wherein the one or more biocidal agent is selected from the group consisting of CuPT, ZnPT, DCOIT, Cu2O, and tralopyril.

3. The antifouling composition of any one of claims 1 or 2, wherein the one or more biocidal agent is selected from the group consisting of CuPT and Cu2O.

4. The antifouling composition of any one of claims 1 to 3, wherein the biocidal agent is CuPT.

5. The antifouling composition of any one of claims 1 to 3, wherein the biocidal agent is Cu2O.

6. The antifouling composition of claim 3, wherein the biocidal agents are CuPT and Cu2O.

7. The antifouling composition of any one of claims 3 to 6, wherein the ratio of Cu(ETFAA)2 (wt %) to CuPT (wt %) and/or the ratio of Cu(ETFAA)2 (wt %) to Cu2O (wt %) is from 100:1 to 1:100.

8. The antifouling composition of any one of claims 3 to 6, wherein the ratio of Cu(ETFAA)2 (wt %) to CuPT (wt %) and/or the ratio of Cu(ETFAA)2 (wt %) to Cu2O (wt %) is from 10:1 to 1:10.

9. The antifouling composition of any one of claims 3 to 6, wherein the ratio of Cu(ETFAA)2 (wt %) to CuPT (wt %) and/or the ratio of Cu(ETFAA)2 (wt %) to Cu2O (wt %) is from 5:1 to 1:5.

10. Use of an antifouling composition for the inhibition of marine biofouling on a solid surface, wherein said antifouling composition comprises Cu(ETFAA)2.

11. The use of claim 10, wherein said antifouling composition comprises Cu(ETFAA)2 and one or more biocidal agent.

12. The use of claim 11, wherein said antifouling composition is the antifouling composition of any one of claims 1 to 7.

13. The use of any one of claims 10 to 12, wherein the antifouling composition is used in combination with a polymer and/or copolymer allowing controlled release of Cu(ETFAA) .

14. An antifouling paint comprising the antifouling composition of any one of claims 1 to 7 and a polymer and/or copolymer allowing controlled release of Cu(ETFAA) .

15. The antifouling paint of claim 14, wherein the content of Cu(ETFAA) is from about 1 to about 25 wt%.

16. The antifouling paint of claim 14, wherein the content of Cu(ETFAA) is from about 3 to about 20 wt%.

17. The antifouling paint of claim 14, wherein the content of Cu(ETFAA) is from about 4 to about 18 wt%.

18. The antifouling paint of claim 14, wherein the content of Cu(ETFAA) is from about 5 to about 15 wt%.

19. The antifouling paint of any one of claims 14 to 18, wherein the total content of said one or more biocidal agent is less than about 30 wt%.

20. The antifouling paint of any one of claims 14 to 18 wherein the total content of said one or more biocidal agent is less than about 25 wt%.

21. The antifouling paint of any one of claims 14 to 18 wherein the total content of said one or more biocidal agent is less than about 20 wt%.

22. The antifouling paint of any one of claims 14 to 18 wherein the total content of said one or more biocidal agent is less than about 18 wt%.

23. The antifouling paint of any one of claims 14 to 22, wherein said one or more biocidal agent comprises CuPT, wherein the total content of CuPT is less than about 10 wt%.

24. The antifouling paint of claim 23, wherein the total content of CuPT is less than about 8 wt%.

25. The antifouling paint of claim 23, wherein the total content of CuPT is less than about 7 wt%.

26. The antifouling paint of any one of claims 14 to 25, wherein said one or more biocidal agent comprises Cu O, wherein the total content of Cu O is less than about 20 wt%.

27. The antifouling paint of claim 26, wherein the total content of Cu O is less than about 15 wt%.

28. The antifouling paint of claim 26, wherein the total content of Cu O is less than about 12 wt%.

29. A method for inhibiting marine biofouling on a solid surface, comprising applying the antifouling paint of any one of claims 14 to 28 onto said surface.