ERODIBLE SHIP-BOTTOM PAINTS FOR CONTROL OF MARINE FOULING

摘要

Novel polymeric binder for use in an antifouling paint which includes a toxicant. The polymeric binder is film-forming, water insoluble, seawater erodible and is represented by formula (I), wherein, in one embodiment, X is H or CH3; R is a substantially non-bioactive, alkyl, aryl or arylalkyl moiety; and recurring groups B, where B is the residue of an ethylenically unsaturated monomer. The polymer has a hydrolysis rate of at least 5X10-4 milliequivalents per hour. The resultant paint has an erosion rate of at least 2 microns per month.R can be selected from the group consisting of : a) formula (II) or formula (III), wherein Z is NO2, halogen or CN; b) -(CH2)nY, wherein n is an integer from 1 to 4; and Y is selected from the group consisting of formula (IV), and wherein R' is C1 to C4 primary, secondary or tertiary alkyl, R" is H or R'; R''' is alkyl or an aryl; c) can be -SiR''' or -Si(OR''')3; d) R can be a haloalkyl group having at least one trihalomethyl group where the halogen is Br, F, Cl, and the alkyl has at least two carbons, e.g. trifluoroethyl acrylate; e) a quaternized aminoalkyl represented by formula (V), where Y is Br, Cl or I, R', R" and R''' are the same or different C1 to C18 alkyls; and f) formula (VI), wherein n is 1 or 2; R'''' is a phenyl group or a C1 to C4 primary, secondary or tertiary alkyl. In another embodiment the X is halogen, CN, or NO2, and R is C1 to C8 primary, secondary or tertiary alkyl.