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. 28, 2013
Filed:
Sep. 14, 2012
Charles H. Kolich, Baton Rouge, LA (US);
John F. Balhoff, Baton Rouge, LA (US);
Douglas W. Luther, Walker, LA (US);
Robert C. Herndon, Baton Rouge, LA (US);
Ronny W. Lin, Baton Rouge, LA (US);
Bruce C. Peters, Baton Rouge, LA (US);
Arthur G. Mack, Prairieville, LA (US);
David A. Lee, Baton Rouge, LA (US);
Charles H. Kolich, Baton Rouge, LA (US);
John F. Balhoff, Baton Rouge, LA (US);
Douglas W. Luther, Walker, LA (US);
Robert C. Herndon, Baton Rouge, LA (US);
Ronny W. Lin, Baton Rouge, LA (US);
Bruce C. Peters, Baton Rouge, LA (US);
Arthur G. Mack, Prairieville, LA (US);
David A. Lee, Baton Rouge, LA (US);
Ablemarle Corporation, Richmond, VA (US);
Abstract
Brominated styrenic polymer is recovered from solution in a vaporizable solvent by converting the solution in a devolatilization extruder into a brominated styrenic polymer melt or flow and a separate vapor phase comprised predominately of vaporizable solvent, recovering the melt or flow from the devolatilization extruder, and allowing or causing the melt or flow to solidify. The solidified brominated styrenic polymer can be subdivided into a powder or pelletized form. Pellets so made have improved hardness and/or crush strength properties along with reduced formation of fines. Brominated anionic styrenic polymer is preferably used in the process.