Benzoxaborole-containing coating resistant to cellulose-supportable fungus

Patent metadata

Field	Value
Publication number	US-10160867-B2
Application number	US-201615227154-A
Country	US
Kind code	B2
Filing date	Aug 3, 2016
Priority date	Aug 6, 2015
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A latex paint composition that contains a film-forming binder and pigment dispersed in an aqueous vehicle and also contains an effective amount of one or more cellulose-supportable fungus growth-inhibiting benzoxaborole compounds of Formula C is disclosed. A method of using that latex paint to inhibit the growth of a cellulose-supportable fungus on a cellulosic surface is also disclosed, as is a method of inhibiting such growth by painting over an fungus-infected surface with a contemplated latex paint.

First claim

The invention claimed is:

1. A latex paint composition resistant to cellulose-supportable fungus growth, said composition inhibiting fungus growth upon a dried, painted cellulose substrate and upon the dried paint film, and comprises an aqueous vehicle having dispersed therein a film-forming binder and a pigment, and further containing a cellulose-supportable fungus growth-inhibiting amount of a benzoxaborole compound of Formula C, below,

where X is H, C 1 -C 7 acyl, cyano, halogen, C 1 -C 6 hydrocarbyl, carboxyl, C 1 -C 6 hydrocarbyloxy carboxylate, carboxamido whose amido nitrogen atom is unsubstituted, mono-substituted with a R 1 C 1 -C 6 hydrocarbyl group, di-substituted with a R 2 C 1 -C 6 hydrocarbyl group that is the same as or different from R 1 , or the amido group nitrogen atom together with R 1 and R 2 form a 5- or 6-membered ring that can contain one additional hetroatom that is oxygen or nitrogen and wherein the additional nitrogen atom when present in that ring can be unsubstituted or substituted with one C 1 -C 6 hydrocarbyl group.

2. The latex paint composition according to claim 1 , wherein said benzoxaborole is a compound of, Formula C-1

3. The latex paint composition according to claim 2 , wherein X is other than H.

4. The latex paint composition according to claim 3 , wherein said benzoxaborole is one or more of

5. The latex paint composition according to claim 1 , wherein said benzoxaborole is present in said latex paint composition in an amount of about 5to about 2000 μg/mL.

6. The latex paint composition according to claim 1 , wherein said cellulose-supportable fungus is selected from the group of genera consisting of one or more of Alternaria, Aspergillus, Aureobasidium, Rhizopus, Mucor, Penicillium, Cladosporium, Epicoccum, Chaetomium, Acremonium, Ulocladium, Fusarium and Stachybotrys .

7. A method of inhibiting the growth of a cellulose-supportable fungus on a cellulosic substrate free of visible fungus growth that comprises the step of coating said cellulosic substrate that is free of visible fungus growth with a latex paint of claim 1 .

8. The method according to claim 7 , wherein said cellulosic substrate is a paper-containing surface.

9. The method according to claim 8 , wherein said paper-containing substrate is one or more, of those selected from the group consisting of plasterboard, a cellulosic ceiling tile, cardboard and wallpaper.

10. The method according to claim 7 , wherein said paper-containing substrate has one or more previously applied and dried coats of paint.

11. The method according to claim 7 , wherein said paper-containing substrate is free of previously applied and dried coats of paint.

12. The method according to claim 7 , wherein said benzoxaborole is a compound of Formula C-1

13. The method according to claim 7 , wherein said benzoxaborole is one or more of

14. The method according to claim 7 , wherein said benzoxaborole is present in said latex paint composition in an amount of about 5 to about 2000 μg/mL.

15. The method according to claim 7 , wherein said cellulose-supportable fungus is selected from the group consisting of one or more of Alternaria alternata, Aspergillus niger, Aureobasidium pullulans, Rhizopus spp., Mucor spp., Aspergillus fumigatus, Penicillium brevicompactum, Penicillium corylophilum, Penicillium purpurogenum, Penicillium chrysogenum, Cladosporium spp., Epicoccum spp., Chaetomium globosum, Acremonium spp., Ulocladium spp., and Fusarium oxysporum and Stachybotrys chartarum .

16. A method of inhibiting the growth of a cellulose-supportable fungus on a cellulosic substrate that has a visible cellulose-supportable fungus infection that comprises over-painting said substrate with a latex paint of claim 1 .

17. The method according to claim 16 , wherein said cellulosic substrate is a paper-containing substrate.

18. The method according to claim 17 , wherein said paper-containing substrate is one or more of those selected from the group consisting of plasterboard, a cellulosic ceiling tile, cardboard and wallpaper.

19. The method according to claim 17 , wherein said paper-containing substrate has one or more previously applied and dried coats of paint.

20. The method according to claim 17 , wherein said benzoxaborole is a compound of Formula C-1

21. The method according to claim 20 , wherein said benzoxaborole is one or more of

22. The method according to claim 17 , wherein said benzoxaborole is present in said latex paint composition in an amount of about 5 to about 2000 μg/mL.

23. The method according to claim 17 , wherein said cellulose-supportable fungus is selected from the group consisting of one or more of Alternaria alternata, Aspergillus niger, Aureobasidium pullulans, Rhizopus spp., Mucor spp., Aspergillus fumigatus, Penicillium brevicompactum, Penicillium corylophilum, Penicillium purpurogenum, Penicillium chrysogenum, Cladosporium spp., Epicoccum spp., Chaetomium globosum, Acremonium spp., Ulocladium spp., Fusarium oxysporum and Stachybotrys chartarum.

Assignees

• Benkovic Stephen J
• Liu Chunyu
• Kaiser Edward Q
• Penn State Res Found

Inventors

• Benkovic Stephen J
• Liu Chunyu
• Kaiser Edward Q

Classifications

• C08K5/0058

  Biocides; (macromolecular substances as carriers for biocide material A01N25/10) · CPC title

• A01N55/08

  containing boron · CPC title

• C09D5/14 Primary

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

• C09D5/025

  Preservatives, e.g. antimicrobial agents · CPC title

• C07F5/04

  Esters of boric acids · CPC title