Process for the continuous preparation of 3-halopropylorganosilanes

US6242630A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Stefan Bade · Rheinfelden (Baden), DE
• Uwe Schoen · Rheinfelden (Baden), DE
• John Burkhard · Rheinfelden (Baden), DE
• Franz-Michael Bollenrath · Marl, DE
• Norbert Hofmann · Bad Säckingen, DE
• Hermann-Josef Korte · Haltern, DE
• Hartwig Rauleder · Rheinfelden (Baden), DE
• Uwe Tanger · Bochum, DE

Key dates

• Filing date: Aug 11, 1997
• Grant date: Jun 5, 2001
• Expiry date: Aug 11, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/1876
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the continuous preparation of 3-halopropylorganosilanes of the general structure EQU R.sub.b H.sub.3-a-b X.sub.a SiCH.sub.2 CH.sub.2 CH.sub.2 Y (III), where: PA1 R is CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7, OCH.sub.3, OC.sub.2 H.sub.5 or OC.sub.3 H.sub.7, PA1 X is F, Cl, Br or I, PA1 Y is F, Cl, Br or I, and PA1 a and b are each one of the numbers 0, 1, 2 or 3 and the sum a+b is 1, 2 or 3, comprising reacting, as starting materials, an allyl halide with a silane carrying at least one H atom, PA1 wherein the starting materials are present in stoichiometric amounts or one of the starting materials is present in substoichiometric amounts, PA1 wherein the reaction carried out is a partial reaction of from 10% to 80%, on a molar basis, of the starting materials, based on either material, when both are present in stoichiometric amounts, or based on the substoichiometric material.