Increasing the self-polishing properties of antifouling paints
AssigneeFina Research, S.A.
InventorsPieter Sijbren Stienstra, Marcel Vos
Life of this patent
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Abstract
Substituted 1,4,2-oxathiazines and their mono- and di-oxides, disclosed in WO-A-9505739, are used as additive to increase the self-polishing properties of antifouling paints. The additive is used in an amount of 0.5 to 9.9 wt. %, based on the total weight of the dry mass of the composition, preferably 1 to 8 wt. %, most preferably 2 to 4 wt. %. The preferred additive is 3-(3,4-dichlorophenyl)-5,6-dihydro-1,4,2-oxathiazine dioxide.
Claims22
A process for increasing the self-polishing properties of an anti-fouling paint composition comprising adding to said anti-fouling paint composition an effective amount of an erosion additive selected from substituted 1,4,2-oxathiazines and their mono- and di-oxides, the substituent in position 3 representing (a) phenyl;
- phenyl substituted with 1 to 3 substituents independently selected from hydroxyl, halo, C1-C12 alkyl, C5-C6 cycloalkyl, trihalomethyl, phenyl, C1-C5 alkoxy, C1-C5 alkylthio, tetrahydropyranyloxy, phenoxy, C1-C4 alkylcarbonyl, phenylcarbonyl, C1-C4 alkylsulfinyl, carboxy or its alkali metal salt, C1-C4 alkyloxycarbonyl, C1-C4 alkylaminocarbonyl, phenylaminocarbonyl, tolylaminocarbonyl, morpholinocarbonyl, amino, nitro, cyano, dioxolanyl or C1-C4 alkyloxyiminomethyl;
- naphthyl;
- pyridinyl;
- thienyl;
- furanyl;
- or thienyl or furanyl substituted with one to three substituents independently selected from C1-C4 alkyl;
- C1-C4 alkyoxy, C1-C4 alkylthio, halo, cyano, formyl, acetyl, benzoyl, nitro, C1-C4 alkyloxycarbonyl, phenyl, phenylaminocarbonyl and C1-C4 alkyloximinomethyl;
- or (b) a substituent of generic formula
- wherein X is oxygen or sulphur, Y is nitrogen, CH or C(C1-C4 alkoxy);
- and the C6 ring may have one C1-C4 alkyl substituent;
- a second substituent selected from C1-C4 alkyl or benzyl being optionally present in position 5 or 6;
- said additive being added in an amount of 1 to 4 wt. % based on the total weight of the dry mass of the composition.
In a self-polishing antifouling paint composition having a dry mass component and a solvent component, the improvement comprising an erosion additive incorporated in said paint composition in an amount within the range of 1-4 wt. % of the dry mass component of the paint composition, said erosion additive selected from substituted 1,4,2-oxathiazines and their mono- and di-oxides, the substituent in position 3 representing (a) phenyl;
- phenyl substituted with 1 to 3 substituents independently selected from hydroxyl, halo, C1-C12 alkyl, C5-C6 cycloalkyl, trihalomethyl, phenyl, C1-C5 alkoxy, C1-C5 alkylthio, tetrahydropyranyloxy, phenoxy, C1-C4 alkylcarbonyl, phenylcarbonyl, C1-C4 alkylsulfinyl, carboxy or its alkali metal salt, C1-C4 alkyloxycarbonyl, C1-C4 alkylaminocarbonyl, phenylaminocarbonyl, tolylaminocarbonyl, morpholinocarbonyl, amino, nitro, cyano, dioxolanyl or C1-C4 alkyloxyiminomethyl;
- naphthyl;
- pyridinyl;
- thienyl;
- furanyl;
- or thienyl or furanyl substituted with one to three substituents independently selected from C1-C4 alkyl;
- C1-C4 alkyoxy, C1-C4 alkylthio, halo, cyano, formyl, acetyl, benzoyl, nitro, C1-C4 alkyloxycarbonyl, phenyl, phenylaminocarbonyl and C1-C4 alkyloximinomethyl;
- or (b) a substituent of generic formula
- wherein X is oxygen or sulphur, Y is nitrogen, CH or C(C1-C4 alkoxy);
- and the C6 ring may have one C1-C4 alkyl substituent;
- a second substituent selected from C1-C4 alkyl or benzyl being optionally present in position 5 or 6.
The composition of claim 17 wherein the erosion additive is 3-(3,4-dichlorophenyl)-5,6-dihydro-1,4,2-oxathiazine dioxide.
In a self-polishing antifouling paint composition having a dry mass component and a solvent component, the improvement comprising an erosion additive incorporated in said paint composition in an amount within the range of 2-4 wt. % of the dry mass component of the paint composition, said erosion additive selected from substituted 1,4,2-oxathiazines and their mono- and di-oxides, the substituent in position 3 representing (a) phenyl;
- phenyl substituted with 1 to 3 substituents independently selected from hydroxyl, halo, C1-C12 alkyl, C5-C6 cycloalkyl, trihalomethyl, phenyl, C1-C5 alkoxy, C1-C5 alkylthio, tetrahydropyranyloxy, phenoxy, C1-C4 alkylcarbonyl, phenylcarbonyl, C1-C4 alkylsulfinyl, carboxy or its alkali metal salt, C1-C4 alkyloxycarbonyl, C1-C4 alkylaminocarbonyl, phenylaminocarbonyl, tolylaminocarbonyl, morpholinocarbonyl, amino, nitro, cyano, dioxolanyl or C1-C4 alkyloxyiminomethyl;
- naphthyl;
- pyridinyl;
- thienyl;
- furanyl;
- or thienyl or furanyl substituted with one to three substituents independently selected from C1-C4 alkyl;
- C1-C4 alkyoxy, C1-C4 alkylthio, halo, cyano, formyl, acetyl, benzoyl, nitro, C1-C4 alkyloxycarbonyl, phenyl, phenylaminocarbonyl and C1-C4 alkyloximinomethyl;
- or (b) a substituent of generic formula
- wherein X is oxygen or sulphur, Y is nitrogen, CH or C(C1-C4 alkoxy);
- and the C6 ring may have one C1-C4 alkyl substituent;
- a second substituent selected from C1-C4 alkyl or benzyl being optionally present in position 5 or 6.
Dependencies are inferred from the claim text.