Non-aqueous dispersion based antifouling paint composition
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United States of America Patent
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Issued Date -
Apr 14, 2005
app pub date -
Sep 16, 2004
filing date -
Dec 20, 2001
priority date (Note) -
Abandoned
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Abstract
The present invention provides an antifouling pain composition comprising a non-dispersion resin having a core-shell structure which is constituted of (a) a hydrophilic core component comprising a polymer of ethylenically unsaturated monomers of which 5-75% by weight comprise free acid groups and .ltoreq.3% by weight comprises silyl ester groups, (b) a shell component comprising a polymer of ethylenically unsaturated monomers of which <3% by weight comprises free acid groups or silyl ester groups, said resin having an acid value 15-400 mg KOH/g wherein the core component accounts for .gtoreq.80% of the acid value of the resin, said paint composition comprising rosin wherein S90% by weight of the rosin has conjugated, non-aromatic double bonds, and .gtoreq.25% thereof being metal resinate which constitutes 1-40% by wet weight of the composition, the dry weight ratio between (i) NAD and (ii) rosin and metal resinates being 100:15 to 15:100.
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