Patent · US Active

Method for the preparation of functionalized cyclosiloxanes

US10059728B2 · kind B2 · utility

0Cited by

5References

12Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

David Briers · Hasselt, BE
Johann Klein · Goldkronach, DE
Esteban Mejia · Rostock, DE
Udo Kragl · Kritzmow, DE
Ralf Dunekake · Goldkronach, DE
Marleen Winterberg · Rostock, DE
Jens Baumgard · Rostock, DE

Key dates

Filing date	Oct 17, 2016
Grant date	Aug 28, 2018
Priority date	—
Expiry date	Oct 17, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F7/21
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a method for preparing functionalized cyclosiloxanes of Formula I, wherein R, R1, R2, m, n1 and n2 are as defined herein, comprising reacting (i) a cyclosiloxane of Formula II with (ii) a substituted acetylene of Formula III in the presence of a hydrosilylation catalyst. The invention further relates to methods for preparing biscyclosiloxanes by reacting the vinyl cyclosiloxanes obtained according to the described methods and the (bis)cyclosiloxanes obtainable according to the described methods.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.