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:
Jul. 28, 1987
Filed:
May. 16, 1985
Applicant:
Inventor:
Franz Kaulich, Bobingen, DE;
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428287 ; 428290 ; 428489 ; 428920 ; 428921 ;
Abstract
The invention relates to a nonwoven made of synthetic fibers or filaments for preparing roofing sheets by coating with fusible coating compositions. A nonwoven of this type is provided with a flame-retardant finish which is still inert at the processing temperatures of the coating composition (for example up to about 250.degree. C.) but which at higher temperatures forms a largely continuous, preferably foamlike, layer which in the event of a fire preferably remains in place even if the supporting fibers or filaments of the nonwoven melt away.