Process for an addition reaction of organic silicon compounds having SiH groups with compounds having olefinic double bonds

US7157541B2 · kind B2 · utility

Assignee

• GOLDSCHMIDT HOLDING GMBH · DE

Inventors

• Wilfried Knott · Essen, DE
• Thomas Pott · Essen, DE

Key dates

• Filing date: May 28, 2004
• Grant date: Jan 2, 2007
• Expiry date: May 28, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the preparation of polyorganosiloxanes and polyorganosilanes of high purity by an addition reaction of siloxanes and/or silanes which contain at least one H—Si group with compounds having olefinic double bonds in the presence of a platinum catalyst and optionally further additional components, wherein the reaction is carried out in the presence of a platinum(0) complex catalyst which was dissolved in a solvent before addition to the reaction medium and to whose solution an effective amount of at least one unsaturated hydrocarbon having 2 to 6 carbon atoms was added.