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:
Jan. 14, 1997
Filed:
Nov. 13, 1995
Applicant:
Inventor:
William C Walsh, Archbold, OH (US);
Assignee:
BASF Corporation, Mount Olive, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521 47 ; 521 42 ; 521 425 ; 521147 ; 528422 ; 528492 ;
Abstract
A process for the reclamation of polystyrene and other styrene containing polymers, by dissolving said polystyrene polymer into a water soluble solvent, such as NMP, and then precipitating said polymer away from the water soluble solvent through the addition of the water soluble solvent/styrene polymer solution into water. The particles of the polymer that precipitate out and float to the surface of the water can be collected and dried at temperatures that do not give added heat history to the polymer.