Anti-fouling compositions or fouling control of harmful aquatic organisms

An anti-fouling composition against harmful aquatic organisms, which comprises an effective anti-fouling amount of an N-phenylbenzoisothiazolone derivative of the formula:

• ##STR4## wherein R's are the same or different and are independently halogen, alkyl or alkoxy;
• n is an integer of 0 to 5;
• X's are the same or different and are independently halogen, nitro, alkyl or alkoxy;
• and m is an integer of 0 to 4;
• with the proviso that when R's are all alkyl or all alkoxy, n is an integer of 1 to 3, and when all the R's are different, n is an integer of 2 or 3, and a resin.

A method for preventing or inhibiting the adhesion of harmful aquatic organisms to a water-exposed article which comprises applying an effective anti-fouling amount of an anti-fouling composition containing an N-phenylbenzoisothiazolone derivative of the general formula:

• ##STR5## wherein R's are the same or different and are independently halogen, C.sub.1 -C.sub.10 alkyl or C.sub.1 -C.sub.10 alkoxy;
• X's are the same or different and are independently halogen, alkyl or alkoxy;
• n is an integer of 0 to 5;
• and m is an integer of 0 with the proviso that when R's are all alkyl or all alkoxy, n is an integer of 1 to 3, and when all the R's are different, n is an integer of 2 or 3, and a resin.