Patent 8729155 was granted and assigned to Unifrax I Llc on May, 2014 by the United States Patent and Trademark Office.
A flexible or rigid intumescent material for fire protection applications. The intumescent material includes inorganic fibers, intumescent material, and a char strength enhancer that is different from the intumescent material and binder. The intumescent material exhibits a high expansion ratio and char strength, without substantial shrinkage, in response to elevated temperatures normally encountered during a fire.