Title:
PURIFICATION METHOD FOR 1,3-BIS(3-AMINOPROPYL)-1,1,3,3-TETRAORGANODISILOXANE
Document Type and Number:
Japanese Patent JP3477631
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To purify tetraorganodisiloxane in high purity and excellent industrial yield useful for a modifying agent of a synthetic resin such as polyimide, polyamide and polyurethane.
SOLUTION: This 1,3-bis(3-aminopropyl)-1,1,3,3-tetraorganodisiloxane of the formula (R is an alkyl or an aryl) is dissolved in solvent preferably comprising isopropanol, changed to an acid-addition salt by using preferably hydrogen chloride (hydrochloric acid), recrystalized preferably in the same solvent and then neutralized preferably using sodium hydroxide. The example of the prescribed compound is 1,3-bis-(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane.
Inventors:
Hideaki Otaki
Hitoshi Koike
Hitoshi Koike
Application Number:
JP26491295A
Publication Date:
December 10, 2003
Filing Date:
September 19, 1995
Export Citation:
Assignee:
Organic Synthetic Industry Co., Ltd.
International Classes:
C07F7/10; C07F7/20; C08K5/544; C08L75/00; C08L77/00; C08L79/00; C08L79/08; (IPC1-7): C07F7/10
Domestic Patent References:
| JP4243883A | ||||
| JP466586A | ||||
| JP2304094A | ||||
| JP63275591A | ||||
| JP35489A |
Attorney, Agent or Firm:
Eiji Tomomatsu (1 person outside)