Patent · US Expired

Process for preparing organosiloxanes

US4032557A · kind A · utility

13Cited by

1References

6Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Helmut Spork
Rudolf Strasser · Baoshan, TW
Rudolf Riedle · Burghausen, DE
Wolfgang Jacques · Burghausen, DE
Johann Waas

Key dates

Filing date	Apr 26, 1976
Grant date	Jun 28, 1977
Priority date	—
Expiry date	Apr 26, 1996

Classification

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

Abstract

An improved process for preparing organosiloxanes and alkyl halides by passing organohalosilanes and alkanols having 1 and/or 2 carbon atoms through at least one layer of packing material which is maintained at a temperature of from 60.degree. to 150.degree. C, the improvement which comprises (1) recycling from 1 to 6 liters of an aqueous phase separated from the organosiloxanes emerging from the layer or layers of packing material for each mol of organohalosilane introduced into the layer or layers of packing material and (2) reacting the organosiloxane separated from the aqueous phase with from 2 to 10 percent by weight based on the weight of the organosiloxane with the same organohalosilane which is passed through the layer or layers of packing material.

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