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:
Aug. 01, 1995
Filed:
Jun. 09, 1993
Applicant:
Inventor:
Husnu M Kalkanoglu, Swarthmore, PA (US);
Assignee:
GS Roofing Products Company, Inc., Irving, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428291 ; 428489 ;
Abstract
A halogen-free flame-retardant bitumen composition with improved performance characteristics is described. The flame-retardant bitumen composition contains at least 45 weight percent bitumen, about 2 to 25 weight percent thermoplastic polymer, and about 15 to 35 weight percent of a mixture of flame-retardant compounds. The mixture of flame-retardant compounds comprises alumina trihydrate and/or magnesium hydroxide, at least 2 weight percent zinc borate, and, optionally, about 2 to 20 weight percent calcium carbonate of the final flame-retardant bitumen composition.