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:
Apr. 27, 2021
Filed:
Dec. 18, 2014
Basf SE, Ludwigshafen, DE;
Evonik Operations Gmbh, Essen, DE;
Markus Schuette, Melle, DE;
Mark Elbing, Bremen, DE;
Johann Klassen, Stemwede-Oppendorf, DE;
Frank Fechner, Melle, DE;
Werner Wiegmann, Rahden, DE;
Michael Klostermann, Essen, DE;
Joachim Venzmer, Essen, DE;
Christian Eilbracht, Herne, DE;
Martin Glos, Borken, DE;
Carsten Schiller, Ratingen, DE;
BASF SE, Ludwigshafen, DE;
Evonik Operations GmbH, Essen, DE;
Abstract
Disclosed herein is a method for producing polyurethane or polyisocyanurate foams. The method involves reacting a composition (Z1) with at least one polyisocyanate, and occurs in the presence of at least one nucleating agent and a blowing agent, in which the nucleating agent and the blowing agent are mixed to obtain a composition (Z2) that is added to the composition (Z1) before it is reacted with the at least one polyisocyanate. The composition (Z1) contains (i) 100 parts by mass of a composition (ZP) including at least one polyol and at least one catalyst that catalyzes formation of a urethane, urea or isocyanuarate bond, and (ii) from 0.05 to 10 parts by mass of a surfactant TD having an HLB value below 6 and no silicon atom.