Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Mark J. Manning0
Frederick M. Ascherl0
Jeffrey D. Lloyd0
Date of Patent
January 16, 2007
0Patent Application Number
101195920
Date Filed
April 9, 2002
0Patent Primary Examiner
Patent abstract
Lignocellulosic-based woodfiber-plastic composite products containing a pesticidal amount of calcium borate is resistant to attack by wood destroying fungi and insects. The preferred calcium borates are the calcium polytriborates having a CaO:B2O3 molar ratio of about 2:3 and calcium hexaborates, having a CaO:B2O3 ratio of 1:3. Composites can be produced by combining the calcium borate with particles of the lignocellulosic material and the thermoplastic resin binder, and heating and extruding the resultant mixture through a die to form the composite product.
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