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:
Dec. 18, 1984
Filed:
Aug. 08, 1983
Applicant:
Inventor:
Nicodemus E Boyer, Schaumburg, IL (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
524409 ; 260463 ; 524411 ; 524412 ; 525 67 ; 525185 ;
Abstract
Carbonate polymer contains both divalent aromatic groups substituted by at least two bromo groups and at least one divalent aliphatic group. The presence of the divalent aliphatic group or groups reduces the melting range of the carbonate polymer. The carbonate polymer is fire resistant and may be admixed with flammable polymer to provide a composition having greater fire resistance than that of the flammable polymer.