Patent ID: 6444732
Filing Date: 2002-09-03
Classification: C09D

Abstract:
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.