Patent · US Expired

Process for preparing organofunctional organopolysiloxanes

US4652662A · kind A · utility

8Cited by

1References

3Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Gunther von Au · São Paulo, BR
Karl Braunsperger · Burghausen, DE
Karl Huhn · Burghausen, DE
Ingomar Kovar · Burghausen, DE

Key dates

Filing date	May 14, 1985
Grant date	Mar 24, 1987
Priority date	—
Expiry date	May 14, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G77/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for preparing organofunctional organopolysiloxanes which comprises reacting a cyclic diorganopolysiloxane with a silane having a SiC-bonded monovalent organic radical with at least one functional group and at least one SiOC-bonded monovalent hydrocarbon radical which can be substituted by an ether oxygen atom, or with an oligomer of such a silane having a maximum of 10 silicon atoms per molecule, in the presence of a quaternary ammonium hydroxide.

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