Erodible ship-bottom paints for control of marine fouling

Details Erodible ship-bottom paints for control of marine fouling Erodible ship-bottom paints for control of marine fouling

C - Chemistry, Metallurgy

09

D

6/13, 117/183, 4

C09D 5/16 (2006.01) C09D 5/00 (2006.01) C09D 5/14 (2006.01) C09J 101/00 (2006.01)

Patent

CA 1295071

ERODIBLE SHIP-BOTTOM PAINTS FOR CONTROL OF MARINE FOULING ABSTRACT OF THE INVENTION The present invention relates to a 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 the formula Image 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) Image or Image 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 Image , -OR''' , -SR''' , Image , 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 the formula Image where Y is Br, Cl or I, R', R'' and R''' are the same or different C1 to C18 alkyls; and f) Image , 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.

472163

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