Process for preparing polymeric binders and their use for antifouling paint systems
AssigneeWitco Corporation
InventorUwe Schneider
Life of this patent
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Abstract
The invention relates to binders for antifouling coating compositions, which can be prepared by copolymerizing polymerizable monomers, wherein, as polymerizable monomers, mixtures of A) at least one of the compounds of the general formula I ##STR1## and B) at least one ethylenically unsaturated compound having the general formula II ##STR2## with or without C) at least one ethylenically unsaturated compound are polymerized.
Claims14
A binder for antifouling coating compositions, which is prepared by copolymerizing a mixture of polymerizable monomers which comprises a mixture of
- A) one or more compounds selected from the group consisting of triethylcitryl methacrylate, diethyl methacryloyloxymalonate, 3-methacryloyloxyacetylacetone, 4-methacryloyloxymethyl-benzoate, 2-methacryloyloxymethylsalicylate, 2,4,6-tribromophenyl methacrylate, 2,4,6-trichlorophenyl methacrylate, 4-methacryloyloxybenzoic acid, 4-methoxyphenyl methacrylate, 2-formylphenyl methacrylate, 5-bromo-2-methacryloyloxybenzaldehyde, 4-chlorothiophenyl methacrylate, ethyloxythioglycolic acid methacrylate, methacryloyloxy acetic acid, methoxycarbonylmethyl methacrylate, t-butoxycarbonyl-methyl methacrylate, and 3-phenyl-5-methacryloylthio-1,2,4-thiadiazole;
- and
- B) at least one ethylenically unsaturated compound having the general formula II ##STR7## in which X is H or CH.sub.3 and
- Y is C.sub.4 -C.sub.12 alkyl, phenyl or cyclohexyl in which the molar ratio of A to B is from 1:1 to 5:1 and optionally
- C) at least one ethylenically unsaturated compound, wherein the molar ratio (A +B) to C is from 1:0 to 1:10.
A binder for antifouling coating compositions produced by polymerizing in a first stage a mixture of D) at least one of the compounds of the general formula III ##STR9## in which:
- A=H or CH.sub.3
- M=Cl or DH
- D=O,S and
- B) at least one ethylenically unsaturated compound having the general formula II ##STR10## in which:
- X=H or CH.sub.3
- Y=C.sub.4 -C.sub.12 alkyl, phenyl or cyclohexyl in which the molar ratio of D) to B) is from 1:1 to 5:1 and optionally
- C) at least one ethylenically unsaturated compound in which the molar ratio of (D +B) to C is from 1:0 to 1:10.
- and then, in a second stage, reacting the copolymer resulting from the first stage with one or more compounds of the general formula IV
- R--Z IV
- in which:
- Z=a functional group which can react with M
- M=Cl or DH
- D=O or S
- R=Ph(R.sup.1).sub.n, --C(CH.sub.2 COOR.sup.2).sub.2, --CH.sub.2 --CH.sub.2 --O--Ph, --C(H).sub.3-(p+q) (CO--R.sup.2).sub.p (COOR.sup.2).sub.q, --C(CH.sub.2 COOR.sup.2).sub.2 (COOR.sup.2) or thiadiazolyl which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.4 alkyl or aryl,
- Ph=phenyl
- R.sup.1 =identical or different in each occurrence and is --C(O)H, --COOR.sup.2, --CH.sub.2 --COOR.sup.2, --O--R.sup.2, --NH--CO--R.sup.2 --NH.sub.2 or halogen
- n=1-3
- p=0-3
- q=0-3
- p+q=1-3
- R.sup.2 =identical or different in each occurrence and is H, or an alkyl, aryl, cycloalkyl or aralkyl radical having 1-10 carbon atoms which is unsubstituted or substituted with halo, alkoxy, amide, aldehyde, formyl or amino.
Dependencies are inferred from the claim text.