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:
Jan. 31, 2012
Filed:
Mar. 13, 2003
Bernd Zaschke, Schoenfeld, DE;
Andreas Hoppe, Lauta, DE;
Marita Schuster, Stemwede-Haldem, DE;
Marion Wenzel, Stemwede-Haldem, DE;
Klaus Wagner, Wagenfeld, DE;
Bernd Zaschke, Schoenfeld, DE;
Andreas Hoppe, Lauta, DE;
Marita Schuster, Stemwede-Haldem, DE;
Marion Wenzel, Stemwede-Haldem, DE;
Klaus Wagner, Wagenfeld, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The invention relates to graft polyols with a bimodal particle size distribution and a total solid content of between 5 and 65 wt. %. Said polyols contain small particles with a particle diameter of between 0.05 and 0.7 μm and large particles with a particle diameter of between 0.4 and 5.0 μm, whereby the peaks of the large and small particles measured during a representation according to the light-scattering analysis method do not overlap. The total solid content with the defined particle sizes consists of a volumetric fraction of between 5 and 45% small particles and a volumetric fraction of between 95 and 55% large particles, said volumetric fractions totalling 100%. The invention also relates to a method for producing graft polyols of this type and to the use thereof for producing polyurethanes.