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:
Nov. 04, 2003
Filed:
Apr. 24, 2002
Applicant:
Inventors:
Katherine S. Clement, Lake Jackson, TX (US);
Louis L. Walker, Clute, TX (US);
Richard M. Wehmeyer, Lake Jackson, TX (US);
Robert H. Whitmarsh, Lake Jackson, TX (US);
David C. Molzahn, Midland, MI (US);
William P. Dianis, Midland, MI (US);
David E. Laycock, Sarnia, CA;
John W. Weston, Sugar Land, TX (US);
Richard J. Elwell, Stade, DE;
Assignee:
Dow Global Technologies, Inc., Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 4/311 ; C07C 4/318 ;
U.S. Cl.
CPC ...
C07C 4/311 ; C07C 4/318 ;
Abstract
Ethoxylations of various initiator compounds are performed in the presence of metal cyanide catalysts. The catalysts surprisingly form a wide variety of polyether products that in most cases contain only small amounts of high molecular weight poly(ethylene oxide).