Back to results
US 4,063,003 AGranted
Product and process for producing fire retardant cellulosic materials
AssigneeChampion International Corporation
InventorSeymour Hartman
Life of this patent
Estimating the term…
Abstract
A cellulosic substrate is rendered fire resistant through application thereto of an alcohol deactivated solution of chlorosulfonic acid and digested plant material.
Claims12
A process for providing fire retardance to a cellulosic substrate comprising forming a solution by digesting plant material with chlorosulfonic acid, deactivating the resultant solution by decomposing the chlorosulfonic acid content thereof with alcohol and applying the deactivated solution to said substrate.
Dependencies are inferred from the claim text.