Title:
【発明の名称】部分アルコキシ化ポリシロキサンの製造方法
Document Type and Number:
Japanese Patent JP2778258
Kind Code:
B2
Abstract:
A partially alkoxylated polysiloxane is prepared by using a reactor kettle equipped with a reaction column and a reflux condenser, charging the kettle with a lower alkoxysilane where the kettle liquid is kept boiling, continuously feeding a halogenated lower alkylsilane into the kettle through the column top and continuously feeding a mixture of water and a monohydric alcohol into the kettle in controlled rates, completely alkoxylating the halogenosilane with the alcohol within the column to continuously yield an alkoxysilane, hydrolyzing the alkoxysilane, with the hydrogen halide by-produced during alkoxylation acting as a catalyst, and withdrawing a partially alkoxylated polysiloxane containing less than 5% by weight of the alcohol from the kettle.
Inventors:
KOSHIMURA TAKEO
ENDO MIKIO
ISHIHARA TOSHINOBU
ENDO MIKIO
ISHIHARA TOSHINOBU
Application Number:
JP1679991A
Publication Date:
July 23, 1998
Filing Date:
January 18, 1991
Export Citation:
Assignee:
SHINETSU KAGAKU KOGYO KK
International Classes:
C07F7/18; C08G77/06; C08G77/18; C08G77/22; (IPC1-7): C08G77/06; C08G77/18
Domestic Patent References:
| JP602313B2 |
Attorney, Agent or Firm:
Takashi Kojima