FIELD: chemistry.
SUBSTANCE: antifouling coating composition contains a curable polymer which is an organosiloxane-containing polymer and an organosilicon polymer which is liquid, having general formula: 
, where R1 can be identical or different and are selected from alkyl, aryl and alkenyl groups, optionally substituted with an amino group, an oxygen-containing group of formula OR5, where R5 is hydrogen or C1-6 alkyl, and a functional group of formula (I): -R6-N(R7)-C(O)-R8-C(O)-XR9 (i) where R6 is selected from alkyl, hydroxyalkyl, carboxyalkyl containing 1-12 carbon atoms, and polyoxyalkylene containing up to 10 carbon atoms; R7 is selected from hydrogen, alkyl, hydroxyalkyl, carboxyalkyl containing 1-6 carbon atoms, and polyoxyalkylene containing 1-10 carbon atoms; R7 can be bonded with R8 to form a ring; R8 is an alkyl group containing 1-20 carbon atoms; R9 is hydrogen an alkyl group containing 1-10 carbon atoms, optionally substituted with oxygen- or nitrogen-containing groups; X is selected from O, S and NH; under the condition that, at least one R1 group in the organosilicon polymer is a functional group of formula (I) given above or a salt derivative thereof; R2 can be identical or different and are selected from alkyl, aryl and alkenyl; R3 and R4, which can be identical or different, are selected from alkyl, aryl, blocked or non-blocked polyoxyalkylene, alkaryl, aralkylene and alkenyl; a is a whole number from 0 to 50000; and b is a whole number from 0 to 100, where a+b is equal to at least 25.
EFFECT: obtaining a composition with low surface tension, suitable elastomeric properties, which reduces attack by fouling organisms and their adhesion strength and can be used as a transparent coating which does not have turbidity or a milk-white colour.
8 cl, 1 tbl, 7 ex
