Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michael R. Kessler0
Roger Walker0
Jeffrey M. Wilson0
Date of Patent
October 13, 2009
0Patent Application Number
113072960
Date Filed
January 31, 2006
0Patent Primary Examiner
Patent abstract
An intumescent coating in the form of an initially liquid coating which cures to a solid and adheres to a substrate. The coating includes a flexible thermosetting epoxy, such as diglycidyl ether of bisphenol-A (DGEBA), with an aliphatic amine curing agent, expandable graphite flakes with reagent chemicals that react upon heating and decompose into gaseous products, and fumed silica. In the presence of heat or flame, an intumescent layer develops at the coating surface, insulating the substrate. The coating is found to add intumescent characteristics which provide heat resistant and fire retardant qualities.
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