An underwater antifouling coating composition which contains a metal pyrithione compound and cuprous oxide as an active ingredient, and a compound represented by the general formula (II): (wherein M2 is H, Na, ½Zn or ½Cu) as a stabilizer has high storage stability over long.
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The invention claimed is: 1. An underwater antifouling coating composition with excellent storage stability, which comprises a metal pyrithione compound represented by the general formula (I): wherein M1 is ½Zn or ½Cu, and cuprous oxide as an active ingredient, a compound represented by the gener
The invention claimed is: 1. An underwater antifouling coating composition with excellent storage stability, which comprises a metal pyrithione compound represented by the general formula (I): wherein M1 is ½Zn or ½Cu, and cuprous oxide as an active ingredient, a compound represented by the general formula (II): wherein M2 is H, Na, ½Zn or ½Cu, as a stabilizer, and a resin as a coating vehicle. 2. The underwater antifouling coating composition according to claim 1, wherein the compound represented by the general formula (II) is contained in an amount of 0.1 to 10 parts by weight relative to 100 parts by weight of the metal pyrithione compound represented by the general formula (I). 3. The underwater antifouling coating composition according to claim 1, wherein the compound of the general formula (I) is contained in an amount of 1 to 10 parts by weight relative to 100 parts by weight of the coating composition. 4. The underwater antifouling coating composition according to claim 1, wherein the resin comprises a hydrolyzable resin containing, as a molecular constituent unit, at least one group represented by the general formula (III): wherein R represents hydrogen or an alkyl group having a carbon number of 1 to 4, M3 represents Si, Cu or Zn, L represents an alkyl group when M3 is Si, or an organic acid residue when M3 is Cu or Zn, and n is the number obtained by subtracting 1 from a valency of M3. 5. The underwater antifouling coating composition according to claim 2, wherein the resin comprises a hydrolyzable resin containing, as a molecular constituent unit, at least one group represented by the general formula (III): wherein R represents hydrogen or an alkyl group having a carbon number of 1to 4, M3 represents Si, Cu or Zn, L represents an alkyl group when M3 is Si, or an organic acid residue when M3 is Cu or Zn, and n is the number obtained by subtracting 1 from a valency of M3. 6. The underwater antifouling coating composition according to claim 3, wherein the resin comprises a hydrolyzable resin containing, as a molecular constituent unit, at least one group represented by the general formula (III): wherein R represents hydrogen or an alkyl group having a carbon number of 1 to 4, M3 represents Si, Cu or Zn, L represents an alkyl group when M3 is Si, or an organic acid residue when M3 is Cu or Zn, and n is the number obtained by subtracting 1 from a valency of M3. 7. A method for preventing aggregation, thickening or gelation of an underwater antifouling coating composition, which comprises combining a metal pyrithione compound represented by the general formula (I): wherein M1 is ½Zn or ½Cu, cuprous oxide as an active ingredient, a resin as a coating vehicle, and a compound represented by the general formula (II): wherein M2 is H, Na, ½Zn or ½Cu, as a stabilizer, to obtain the coating composition. 8. The method according to claim 7, wherein the compound represented by the general formula (II) is 0.1 to 10 parts by weight relative to 100 parts by weight of the metal pyrithione compound represented by the general formula (I). 9. The method according to claim 7, wherein the compound of the general formula (I) is 1 to 10 parts by weight relative to 100 parts by weight of the coating composition. 10. The method according to claim 7, wherein the resin comprises a hydrolyzable resin comprising, as a molecular constituent unit, at least one group represented by the general formula (III): wherein R represents hydrogen or an alkyl group having a carbon number of 1 to 4, M3 represents Si, Cu or Zn, L represents an alkyl group when M3 is Si, or an organic acid residue when M3 is Cu or Zn, and n is the number obtained by subtracting 1 from a valency of M3. 11. A method for preventing adhesion of marine organisms to an underwater surface, which comprises applying an underwater antifouling coating composition to the underwater surface, wherein the coating composition comprises a metal pyrithione compound represented by the general formula (I): wherein M1 is ½Zn or ½Cu, cuprous oxide as an active ingredient, a compound represented by the general formula (II): wherein M2 is H, Na,½Zn or ½Cu, as a stabilizer and a resin as a coating vehicle. 12. The method according to claim 11, wherein the compound represented by the general formula (II) is 0.1 to 10 parts by weight relative to 100 parts by weight of the metal pyrithione compound represented by the general formula (I). 13. The method according to claim 11, wherein the compound of the general formula (I) is 1 to 10 parts by weight relative to 100 parts by weight of the coating composition. 14. The method according to claim 11, wherein the resin comprises a hydrolyzable resin comprising, as a molecular constituent unit, at least one group represented by the general formula (III): wherein R represents hydrogen or an alkyl group having a carbon number of 1 to 4, M3 represents Si, Cu or Zn, L represents an alkyl group when M3 is Si, or an organic acid residue when M3 is Cu or Zn, and n is the number obtained by subtracting 1 from a valency of M3.
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이 특허에 인용된 특허 (4)
Patru Marcel Joseph Gaston (60 Sainte-Eusoy Froissy FR), Bacteriostatic, fungistatic and algicidal compositions, particularly for submarine paints.
Rothgery Eugene F. (North Branford CT) Seefried ; Jr. Carl G. (Southbury CT), Pyridine and pyridone stabilizers for hydroxylammonium nitrate and hydroxylamine-containing compositions.
Jiang, Chunpeng; Limberg, Brian Joseph; Smith, III, Edward Dewey; Wang, Juan; Liu, Zhe; Cheng, Enjun; Kelly, Casey Patrick; Cook, Jason Edward; Stenger, Patrick Christopher, Bar soap compositions containing zinc pyrithione and a metal-pyridine oxide complex.
Jiang, Chunpeng; Limberg, Brian Joseph; Smith, III, Edward Dewey; Wang, Juan; Liu, Zhe; Cheng, Enjun; Kelly, Casey Patrick; Cook, Jason Edward; Stenger, Patrick Christopher, Bar soap compositions containing zinc pyrithione and a metal-pyridine oxide complex.
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