Use of polymeric ethylene oxides in the preparation of glycidyl azide polymer
US4486351A · kind A · utility
13Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1983 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Dec 14, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/325
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved process of preparing hydroxy-terminated aliphatic polyethers having pendant alkyl azide groups is disclosed. The process entails reacting metal azide and hydroxy-terminated aliphatic polyether having pendant haloalkyl groups at elevated temperatures. The improvement comprises using a liquid reaction medium that is relatively non-polar and comprises a polyalkyleneoxide having (a) a molecular weight above about 200 and (b) miscibility with the hydroxy-terminated aliphatic polyether having pendant haloalkyl groups at temperatures greater than about 80.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.