USOO81683 04B2 (12) United States Patent (10) Patent No.: US 8,168,304 B2 Zhang et al. (45) Date of Patent: May 1, 2012 (54) MICRONIZED WOOD PRESERVATIVE AOIN 59/6 (2006.01) FORMULATIONS COMPRISING BORON AOIN 59/20 (2006.01) COMPOUNDS C09K 5/4 (2006.01) if C09K 5/6 (2006.01) (75) Inventors: in Zhang. Getty ille NYSUS Wenjin (S2) usic. ... 428/541; 428/535; 428/537.1; Zhang, Tonawanda, NY (US); Robert 424/630; 424/641; 106/18.13: 106/18.3; 427/180; M. Leach, Grand Island, NY (US) 427/181; 427/297; 427/393; 427/397; 427/440 (73) Assignee: Osmose, Inc., Buffalo, NY (US) (58) Field of Classification Search ............... 428/537.1, 428/535,541 (*) Notice: Subject to any disclaimer, the term of this See application file for complete search history. patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days. (56) References Cited (21) Appl. No.: 12/691.707 U.S. PATENT DOCUMENTS (22) Filed: Jan. 21, 2010 1,388,513 A 8, 1921 Chandler (Continued) (65) Prior Publication Data FOREIGN PATENT DOCUMENTS US 2010/O1838.68A1 Jul. 22, 2010 CA 2103470 8, 1994 Related U.S. Application Data (Continued) (63) Continuation of application No. 1 1/354,726, filed on Feb. 15, 2006, now abandoned, which is a OTHER PUBLICATIONS continuation-in-part of application No. 1 1/126,839, Koch, C.C., Synthesis of Nanostructured Materials by Mechanical filed on May 11, 2005, now abandoned, said Milling: Problems and Opportunities, NanoStructured Materials, application No. 1 1/354,726 is a continuation-in-part of vol. 9, pp. 13-22, 1997. application No. 10/970,446, filed on Oct. 21, 2004, said application No. 1 1/354,726 is a (Continued) continuation-in-part of application No. 1 1/116,152, filed on Apr. 27, 2005, now abandoned, and a Primary Examiner — Joseph D Anthony continuation-in-part of application No. 10/821,326, (74) Attorney, Agent, or Firm — Covington & Burling LLP filed on Apr. 9, 2004, now Pat. No. 7,674,481. (60) Provisional application No. 60/570,659, filed on May (57) ABSTRACT 13, 2004, provisional application No. 60/568,485, The present invention provides wood preservative and flame filed on May 6, 2004, provisional application No. retardant compositions having low leachability comprising 60/565,585, filed on Apr. 27, 2004, provisional micronized boron compounds and, optionally, one or more application No. 60/461,547, filed on Apr. 9, 2003, organic biocides which may be micronized. Also provided is provisional application No. 60/518.994, filed on Nov. a method for applying the composition to wood and wood 11, 2003. products comprising impregnating the wood with the com (51) Int. Cl. position. 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