Patent · US Expired

Process for the continuous preparation of organopolysiloxanes

US5723561A · kind A · utility

2Cited by

8References

8Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Rudolf Braun · Burgkirchen an der Alz, DE
Ludwig Hager · Burghausen, DE
Johann Steiner · Des Plaines, US
Horst Muller · Cologne, DE

Key dates

Filing date	Oct 4, 1995
Grant date	Mar 3, 1998
Priority date	—
Expiry date	Oct 4, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/582
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the continuous preparation of organopolysiloxane by condensation and/or equilibration reaction of organosilicon compounds comprising in a first step PA1 conveying an organosilicon compound, catalyst which is solid in the reaction mixture at least at the reaction temperature and, optionally, additives continuously from the bottom upwards through a heated cylindrical reactor which is arranged in a standing position and whose contents can be agitated mechanically and in a second step PA1 passing the reaction mixture obtained after leaving the reactor at the upper end thereof continuously through a cylindrical reactor and in a third step PA1 freeing the reaction mixture obtained of catalyst after exit from the reactor.

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