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:
Feb. 04, 2014
Filed:
Mar. 13, 2009
Nils Mohmeyer, Osnabrueck, DE;
Ralf Fritz, Bissendorf-Schledehausen, DE;
Annika Habicht, Bohmte, DE;
Daniela Tepe, Dinklage, DE;
Frank Prissok, Lemfoerde, DE;
Michael Harms, Diepholz, DE;
Bernd Bruchmann, Freinsheim, DE;
Daniel Schoenfelder, Brussels, BE;
Daniel Freidank, Lemfoerde, DE;
Andreas Emge, Lemfoerde, DE;
Andrea Eisenhardt, Vechta, DE;
Nils Mohmeyer, Osnabrueck, DE;
Ralf Fritz, Bissendorf-Schledehausen, DE;
Annika Habicht, Bohmte, DE;
Daniela Tepe, Dinklage, DE;
Frank Prissok, Lemfoerde, DE;
Michael Harms, Diepholz, DE;
Bernd Bruchmann, Freinsheim, DE;
Daniel Schoenfelder, Brussels, BE;
Daniel Freidank, Lemfoerde, DE;
Andreas Emge, Lemfoerde, DE;
Andrea Eisenhardt, Vechta, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention relates to an open-cell polyurethane foam comprising polyester and polyether structures and having a density of 70 to 300 g/L, 1 to 20 cells/cm, a rebound intensity greater than 30%, an elongation at break of greater than 200%, a tear propagation resistance of greater than 1.2 N/mm and a tensile strength of greater than 200 kPa. The present invention further relates to a process for producing inventive open-cell polyurethane sponges and to the use thereof as a pipe cleaning sponge.