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. 22, 1980
Filed:
Feb. 03, 1978
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
525470 ; 260 / ; 260 / ; 264211 ; 525-3 ; 525462 ; 528196 ;
Abstract
The present invention relates to polycarbonate films, and in particular extruded films and cast films, but preferably extruded films, which are characterized in that they contain about 0.01% to 2% by weight of a NH.sub.4 salt, alkali metal salt or alkaline earth metal salt of a perhalogenoalkanesulphonic acid, preferably a perfluoroalkanesulphonic acid.