The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2003
Filed:
May. 06, 1998
James A. Davis, Westfield, IN (US);
William F. Barham, Jr., Prescott, AR (US);
Gregory A. Brandt, Zionsville, IN (US);
BFS Diversified Products, LLC, Carmel, IN (US);
Abstract
Fire retardant sheeting materials for roofing having improved burn resistivity and are suitable for use on roofs having inclines of at least 1 inch per linear foot. These sheeting materials are prepared from a polymeric composition of matter comprising a base polymer containing at least one ethylene-propylene-diene terpolymer, the base polymer having up to about 2 percent by weight crystallinity; from about 85 to about 175 parts by weight of at least one non-combustible mineral filler per 100 parts of the base polymer; from about 30 to about 50 parts by weight of a processing material, per 100 parts of the base polymer; from about 50 to about 80 parts by weight of at least one fire retardant additive, per 100 parts of the base polymer; and from about 1.5 to about 10 parts by weight of a sulfur cure package per 100 parts of the base polymer. The composition contains at least 40 percent non-combustible materials, and the sheeting material has a limiting oxygen index (LOI) of at least 40 percent when tested in accordance with ASTM D2863-91. A method of covering a roof comprises the steps of applying layers of the fire retardant roof sheeting material prepared from the polymeric composition of matter, to the roof being covered, overlapping adjacent edges of the roof sheet material, and adhesively seaming the overlapped layers of the roof sheet material together to form a continuous roofing membrane.