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:
Jun. 23, 2009
Filed:
Apr. 21, 2005
Applicants:
Majid Keyvani, Glen Mills, PA (US);
Jude T. Ruszkay, Coatesville, PA (US);
Edward P. Carey, Atglen, PA (US);
Inventors:
Majid Keyvani, Glen Mills, PA (US);
Jude T. Ruszkay, Coatesville, PA (US);
Edward P. Carey, Atglen, PA (US);
Assignee:
Lyondell Chemical Technology, L.P., Greenville, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/34 (2006.01); C07C 7/05 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for recovering a solvent from its mixture containing oligomers extracted from grafted polyolefins is disclosed. The method includes distilling the solvent from the mixture in the presence of a naphthalene compound. The method of the invention significantly increases the solvent recovering yield without causing the vessel fouling.