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:
Jul. 08, 1997
Filed:
Feb. 28, 1995
Applicant:
Inventors:
Guy L Crocco, Wilmington, DE (US);
John G Zajacek, Devon, PA (US);
Assignee:
ARCO Chemical Technology, L.P., Greenville, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
549531 ;
Abstract
The selectivity of an olefin epoxidation process catalyzed by titanium silicalite is improved by performing the epoxidation in the presence of minor amounts of nonbasic salts such as lithium chloride, sodium nitrate, potassium sulfate, and ammonium dihydrogen phosphate. For example, when hydrogen peroxide is reacted with propylene to form propylene oxide, non-selective ring-opening reactions of the propylene oxide are suppressed when low concentrations of a nonbasic salt are added to the hydrogen peroxide feed.