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. 22, 2004
Filed:
Apr. 10, 2002
Applicant:
Inventors:
Stephan Bauer, Ostercappeln, DE;
Georg Heinrich Grosch, Bad Dürkheim, DE;
Gerlinde Tischer, Ruhland, DE;
Kathrin Harre, Dresden, DE;
Eva Baum, Schwarzheide, DE;
Thomas Ostrowski, Castrop-Rauxel, DE;
Reinhard Lorenz, Laer, DE;
Regina Pretzsch, Schwarzheide, DE;
Michael Pcolinski, Bloomfield, MI (US);
Stefan Dinsch, Schipkau, DE;
Inge Rotermund, Ortrand, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 1/842 ; C08G 1/848 ; C07C 4/103 ; C07C 4/310 ; C07C 4/313 ;
U.S. Cl.
CPC ...
C08G 1/842 ; C08G 1/848 ; C07C 4/103 ; C07C 4/310 ; C07C 4/313 ;
Abstract
Polyester-polyether block copolymers can be prepared by catalytic addition of alkylene oxides onto H-functional initiator substances, using polyester alcohols as H-functional initiator substances and multimetal cyanide compounds as catalysts.