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:
Mar. 20, 1990
Filed:
Jul. 23, 1987
Applicant:
Inventors:
Edward D Weil, Hastings-on-Hudson, NY (US);
John Tomko, Dobbs Ferry, NY (US);
Assignee:
Akzo America Inc., New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524125 ;
Abstract
Flame retardant polyester compositions are prepared by incorporating into a polymer from 1-20% by weight of a flame retardant having the structural formula: ##STR1## where Ar is aryl and R and R' are independently alkylene. This class of flame retardant shows high temperature stability and permits incorporation of the flame retardant into the polyester by hot milling at temperatures up to about 390.degree. C.