| 发明名称 |
Process for preparing low molecular weight organosiloxane terminated with silanol group |
| 摘要 |
Hydrolysis of an alkoxysiloxane of the formula: R1a(R2O)bSiO(4-a-b)/2 wherein R1 is a monovalent hydrocarbon group, R2 is an alkyl group having 1 to 4 carbon atoms, letter a=0 to 2.2, b=0.2 to 3, 2</=a+b</=3, and the number of silicon atoms in a molecule is 2 to 5, is effected in the presence of a cation exchange resin by adding water therereto in an amount of 1 to 10 mol per mol of the alkoxy group in the alkoxysiloxane and agitating the mixture. Low molecular weight, linear organosiloxanes having a silanol terminal group including dimer diol and trimer diol are produced in high yields.
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| 申请公布号 |
US5576408(A) |
申请公布日期 |
1996.11.19 |
| 申请号 |
US19950518881 |
申请日期 |
1995.08.24 |
| 申请人 |
SHIN-ETSU CHEMICAL CO., LTD. |
发明人 |
IGARASHI, MINORU;TAKAHASHI, MASAHARU |
| 分类号 |
C08G77/16;C07F7/08;C07F7/18;C08G77/04;C08G77/06;C08G77/22;(IPC1-7):C08G77/08 |
主分类号 |
C08G77/16 |
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代理人 |
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