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:
Dec. 20, 2011
Filed:
Apr. 01, 2010
Applicants:
Xiangmin LI, Glen Mills, PA (US);
Lawrence M. Candela, Havertown, PA (US);
Brian a Salisbury, Oxford, PA (US);
Inventors:
Xiangmin Li, Glen Mills, PA (US);
Lawrence M. Candela, Havertown, PA (US);
Brian A Salisbury, Oxford, PA (US);
Assignee:
Lyondell Chemical Technology, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 301/32 (2006.01); C07D 301/19 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention is a method of purifying propylene oxide containing 25-100 ppm aldehyde impurities. The method comprises contacting the propylene oxide in the liquid phase with an amine-functionalized ion exchange resin, and recovering a purified propylene oxide product containing 10 ppm, or less, aldehydes.