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Hardened and fire retardant products
   
Document Number
US Patent 5683820
Issued Date
November 4, 1997
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Abstract
Wood products impregnated with from 30 to 80% of a polymerizable monomer selected from the group consisting of hexanediol diacrylate and hexanediol dimethacrylate have excellent indent resistance. The wood products are impregnated with the monomer solution by placing the wood under a vacuum to remove air, contacting the wood with a monomer solution containing a polymerizable hexanediol diacrylate and/or hexanediol dimethacrylate monomer and from 0.5 to about 2 percent of a thermally activated free radical source as a polymerization initiator for a period sufficient to achieve the desired polymer loading. The wood is then heated under pressure to polymerize or cure the monomers.
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Number of Claims:
4
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Published
November 4, 1997
Application Number
08/574,469
Filed
December 8, 1995
US Classification
428/514   428/537.1 428/921
Int'l Classification
B27K   3/15   (20060101)   B27K   3/02   (20060101)  
Examiner
Attorney/Law Firm
Parent Case
This application is a continuation application of U.S. Ser. No. 08/074,772, filed Jun. 9, 1993 now abandoned.
USPTO Field of Search
428/514   428/537.1   428/921  
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Description
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