公开(公告)号：US10988593B2

公开(公告)日：2021-04-27

申请号：US15105509

申请日：2014-12-18

Applicant: BASF SE ,  Evonik Operations GmbH

Inventor： Markus Schuette ,  Mark Elbing ,  Johann Klassen ,  Frank Fechner ,  Werner Wiegmann ,  Michael Klostermann ,  Joachim Venzmer ,  Christian Eilbracht ,  Martin Glos ,  Carsten Schiller

IPC: C08J9/14 ,  C08J9/00 ,  C08G18/18 ,  C08G18/20 ,  C08G18/40 ,  C08G18/28 ,  C08G18/16 ,  C08G18/08 ,  C08G18/48 ,  C08G101/00 ,  C08G18/50 ,  C08G18/76

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.

公开(公告)号：US20210047474A1

公开(公告)日：2021-02-18

申请号：US16966914

申请日：2019-02-08

Applicant: Evonik Operations GmbH

Inventor： Michael Klostermann ,  Michael Ferenz ,  Kai-Oliver Feldmann ,  Marvin Jansen ,  Michelle Fluder ,  Sina Arnold ,  Petra Schnell

IPC: C08G77/46 ,  C08L83/12 ,  C08L75/04 ,  B01J23/42

Abstract: Crosslinked polyether siloxane block copolymers are obtained by reacting an alpha-omega hydrogen siloxane with at least one higher-order hydrogen siloxane and at least one polyether in the presence of a hydrosilylation catalyst. These are described, and also use thereof as additives for producing polyurethane foams, particularly mechanically foamed polyurethane foams.