Flame retardant activated carbon web
AssigneeThe Dexter Corporation
InventorsGerald W. Gadbois, Peter D. Sutherland
Life of this patent
Estimating the term…
Abstract
A fibrous web containing activated carbon is rendered flame retardant without substantially reducing its adsorption efficiency by treating the carbon containing web with about 5-20% by weight of a basic ammonium phosphate.
Claims4
A flame retardant activated carbon fibrous web material comprising a fibrous web containing at least 15 percent by weight activated carbon, said web being treated with a basic ammonium phosphate so as to retain at least about 5 percent by weight the phosphate based on the total weight of the web, the treated web being capable of retaining at least 80 percent of its adsorption efficiency and exhibiting a flame resistance of no after-glow and a char length of less than 10 cm. using test procedure TAPPI T-461.
Dependencies are inferred from the claim text.