Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 3, 2015
0Patent Application Number
132786340
Date Filed
October 21, 2011
0Patent Citations Received
Patent Primary Examiner
Patent abstract
The present invention relates to a process for preparing polyurethanes, which comprise at least three hydrophilic sections, at least four hydrophobic sections, optionally allophanate segments and/or isocyanurate segments and which are prepared in the presence of alkali(ne earth) metal carboxylates. The process may comprise using at least one carboxylic acid salt of at least one metal selected from the group consisting of the alkali metals, the alkaline earth metals and mixtures thereof Furthermore, the present invention relates to the polyurethanes per se obtainable in this way, to the use thereof as thickeners for aqueous preparations, and to preparations comprising polyurethanes of this type.
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