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:
Oct. 07, 1997
Filed:
Oct. 04, 1995
Applicant:
Inventors:
Thomas I Evans, Glenmoore, PA (US);
Bernard Cooker, Malvern, PA (US);
Rajendra S Albal, West Chester, PA (US);
Assignee:
ARCO Chemical Technology, L.P., Greenville, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
585858 ; 585865 ; 585866 ; 585867 ;
Abstract
The waste organics containing caustic stream from a propylene oxide/styrene monomer process is preferably first concentrated by distillation and then contacted with strong acid such as sulfuric acid and an organic solvent, the admixture is phase separated and an aqueous sodium containing phase reduced in organics is separated from an organic solvent phase reduced in sodium.