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:
Nov. 29, 2011
Filed:
Aug. 07, 2009
Douglas W. Luther, Walker, LA (US);
Douglas W. Luther, Walker, LA (US);
Albemarle Corporation, Richmond, VA (US);
Abstract
Despite the frangibility of additive-free granules of brominated anionic styrenic polymer, pellets of unadulterated brominated anionic styrenic polymer are provided having 50 wt % or more bromine content, in which 70 wt % or more of the pellets are retained on a US No. 40 sieve and no more than 30 wt % are retained on a US No. 5 sieve. These pellets contain no binding agent and they do not break apart or revert to small particles and finely divided powder, typically called 'fines' when subjected to ordinary handling. More specifically, no more than about 5 wt %, preferably no more than about 3 wt %, and more preferably no more than about 1 wt % of these pellets as formed and packaged are fines or dusts that can pass through a US No. 40 sieve.