	US 12,264,220 B2
	Process for producing high-purity hydrosilylation products
Matthias Lobert, Essen (DE); and Thomas Reibold, Herten (DE)
Assigned to Evonik Operations GmbH, Essen (DE)
Filed by Evonik Operations GmbH, Essen (DE)
Filed on Jan. 6, 2021, as Appl. No. 17/142,947.
Claims priority of application No. 20154483 (EP), filed on Jan. 30, 2020.
Prior Publication US 2021/0238361 A1, Aug. 5, 2021
Int. Cl. A01N 25/10 (2006.01); A61K 8/891 (2006.01); C08G 77/08 (2006.01); C08G 77/18 (2006.01); D06M 15/643 (2006.01)

CPC C08G 77/18 (2013.01) [A01N 25/10 (2013.01); A61K 8/891 (2013.01); C08G 77/08 (2013.01); D06M 15/643 (2013.01)]

19 Claims

1. A process for producing organically modified polysiloxanes and/or silanes by hydrosilylation, comprising the following steps:

a) reacting a SiH-functional siloxane and/or silane with an unsaturated organic compound in the presence of a noble metal catalyst and

in the presence of water,

b) distillation,

c) final separation of solids, by filtration,

wherein adsorbents are used in step a), which are added as a further, separate component,

wherein the adsorbents comprise magnesium silicate.