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:
Aug. 15, 2006
Filed:
Dec. 07, 2004
Applicants:
Hartmut Nefzger, Pulheim, DE;
Gerhard Klein, Monheim, DE;
Erhard Michels, Cologne, DE;
Ulrich Boddenberg, Leichlingen, DE;
Inventors:
Hartmut Nefzger, Pulheim, DE;
Gerhard Klein, Monheim, DE;
Erhard Michels, Cologne, DE;
Ulrich Boddenberg, Leichlingen, DE;
Assignee:
Bayer Materialscience AG, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for cleaning multi-product production plants for polyester polyols with a cleaning polyol. The cleaning polyol can be used as a raw material in the production of further polyols.