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.