The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2011
Filed:
Jul. 22, 1998
David F. Gavin, Cheshire, CT (US);
Craig Waldron, Wolcott, CT (US);
Robert J. Martin, Monroe, CT (US);
George A. Polson, Harwinton, CT (US);
David F. Gavin, Cheshire, CT (US);
Craig Waldron, Wolcott, CT (US);
Robert J. Martin, Monroe, CT (US);
George A. Polson, Harwinton, CT (US);
Arch Chemicals, Inc., Norwalk, CT (US);
Abstract
A biocidal composition is disclosed comprising composite particles, each of the composite particles containing a shell and a core, the core comprising a metal or a metal-containing compound wherein the metal is a moiety selected from the group consisting of zinc, copper, bismuth, silver, zirconium, and combinations thereof, the shell comprising a pyrithione adduct comprising the reaction product of pyrithione with a portion of the core metal or metal compound. In one aspect, an anti-fouling composition is disclosed comprising (a) an anti-soft-fouling effective amount of copper pyrithione; and (b) an anti-hard-fouling effective amount of a copper-containing salt, or oxide or hydroxide thereof. The present invention also relates to a method of making an antifouling composition comprising particles of copper pyrithione and a copper-containing salt that is effective against hard-fouling and soft-fouling organisms.