公开(公告)号：US20170120473A1

公开(公告)日：2017-05-04

申请号：US15314791

申请日：2015-05-27

Applicant: Koppers Performance Chemicals Inc.

Inventor： Jun ZHANG ,  John HORTON ,  Xinhao H. GAO

IPC: B27K3/16 ,  B05D1/02 ,  B05D1/18 ,  B05D1/28 ,  C09D5/18 ,  B27K3/08 ,  B27K5/00 ,  C09K21/04 ,  C09K21/02 ,  C09K21/10 ,  B05D7/06 ,  B27K3/36

CPC classification number: B27K3/163 ,  B05D3/0493 ,  B05D5/00 ,  B05D7/08 ,  B05D7/50 ,  B05D2203/20 ,  B05D2401/20 ,  B05D2502/00 ,  B05D2503/00 ,  B05D2504/00 ,  B05D2505/00 ,  B05D2508/00 ,  B27K3/08 ,  B27K3/166 ,  B27K3/36 ,  B27K5/003 ,  B27K5/0055 ,  B27K2200/15 ,  B27K2200/30 ,  B27K2240/30 ,  C09D5/185 ,  C09K21/02 ,  C09K21/04 ,  C09K21/10 ,  Y10T428/266

Abstract: A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of applying an aqueous fire-retardant impregnate and applying a coating to the surface of the wood product. In one embodiment, said process confers fire-retardant properties to the wood products sufficient to pass the extended burn test of ASTM E-84. The present invention also provides fire retardant wood products.