US 7,540,906 B2
	Metal salts of hydrolyzed olefin/maleic anhydride copolymers and their use as wood preservatives
Albert Gordon Anderson, Wilmington, Del. (US); John Feaster, Chesapeake City, Md. (US); Damini Patel, Wallingford, Pa. (US); and Mark Scialdone, West Grove, Pa. (US)
Assigned to E.I. Du Pont de Nemours & Company, Wilmington, Del. (US)
Filed on Dec. 21, 2006, as Appl. No. 11/643,598.
Claims priority of provisional application 60/755211, filed on Dec. 30, 2005.
Prior Publication US 2007/0163465 A1, Jul. 19, 2007
Int. Cl. A01N 59/20 (2006.01); A01N 59/16 (2006.01); A01P 3/00 (2006.01); A01P 7/04 (2006.01); B05D 5/00 (2006.01); B05D 7/06 (2006.01); B05D 1/02 (2006.01); B05D 1/18 (2006.01); B05D 1/28 (2006.01); B32B 21/04 (2006.01); B32B 21/06 (2006.01); A01N 35/06 (2006.01)

U.S. Cl. 106—18.32  [106/15.05; 424/78.08; 424/78.09; 427/297; 427/351; 427/389.9; 427/391; 427/392; 427/393; 427/421.1; 427/428.01; 427/439; 427/440; 428/375; 428/532; 428/537.1; 428/537.5; 514/492; 514/494; 514/500; 514/772; 514/772.3]

20 Claims

1. An aqueous composition comprising in admixture (a) a complex comprising (i) copper ions, zinc ions or a mixture thereof, and (ii) a hydrolyzed olefin/maleic anhydride copolymer having a molecular weight in the range of about 10,000 to about 50,000; and (b) ammonia and/or ethanolamine; wherein component (b) is present in an amount sufficient to solubilize the complex.