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:
May. 15, 2001
Filed:
Sep. 10, 1998
Billie B. Dadgar, Baton Rouge, LA (US);
Donald E. Balhoff, Baton Rouge, LA (US);
Charles H. Kolich, Baton Rouge, LA (US);
Meng-Sheng Ao, Baton Rouge, LA (US);
Homer C. Lin, Baton Rouge, LA (US);
Albemarle Corporation, Richmond, VA (US);
Abstract
Flame retarded thermoplastic polymer compositions are formed by blending together a thermoplastic polymer and at least a flame retardant amount of a brominated styrenic polymer having, prior to blending, a total bromine content of at least about 50 wt % and in addition specified characteristics pertaining to such properties as (i) TGA temperature for 1% weight loss, (ii) hydrolyzable bromine content, (iii) chlorine content (if any), and/or (iv) thermal stability using a described Thermal Stability Test. Blends made with prior art brominated polystyrenes do not possess the enhanced thermal stability and reduced metal corrosiveness provided by these brominated styrenic polymers.