Molluscicidal water distribution system components
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United States of America Patent
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Jul 20, 1993
Grant Date -
N/A
app pub date -
Nov 8, 1991
filing date -
Nov 8, 1991
priority date (Note) -
Expired
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Abstract
A polymer resin-molluscicidal composite for preventing and controlling damage to water distribution systems caused by Dreissena polymorpha, the zebra mussel, and other undesirable sessile mollusks is provided. The composite is preferably formed of an ultra-high molecular weight polyethylene and 0.1 to 20 weight percent of a water insoluble, high melting point molluscicide which is preferably a metal salt or complex of an organic sulfur compound. Alkyldithiocarbamates, tetraalkylthiuram sulfides and the metal salts and complexes thereof are preferred molluscicides. The molluscicidal composite may be formed into structural components, such as valves, or into linings, coatings and encapsulators.
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