发明名称 |
Neutralization method for polyorganosiloxanes |
摘要 |
A method for neutralizing a polyorganosiloxane mixture. The method comprises (A) contacting a mixture comprising a polyorganosiloxane and a base with a neutralizing amount of a solid organic acid at a mixture temperature above the melting temperature of the solid organic acid forming a molten organic acid and forming an insoluble adduct of the base with the molten organic acid, (B) lowering the mixture temperature to effect solidification of residual molten organic acid to residual solid organic acid, and (C) effecting separation of the insoluble adduct and the residual solid organic acid from the polyorganosiloxane mixture. The present invention is especially useful for neutralizing mixtures comprising polyorganosiloxane mixtures where the polyorganosiloxane comprises hydrocarbyl groups bonded to silicon.
|
申请公布号 |
US5847180(A) |
申请公布日期 |
1998.12.08 |
申请号 |
US19970990417 |
申请日期 |
1997.12.15 |
申请人 |
DOW CORNING CORPORATION |
发明人 |
GRAVIER, DANIEL;TSELEPIS, ARTHUR JAMES |
分类号 |
C08G77/34;C08G77/32;(IPC1-7):C07F7/08 |
主分类号 |
C08G77/34 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|