Polyether having heterofunctional groups at both ends, process for the preparation thereof and polymerization initiator therefor
US5679765A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1996 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Jul 16, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/336
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a bifunctional polyether having groups different from each other at both ends, with a polymerization degree of 5 to 10000 and consisting of repeating units each represented by the following formula (I): ##STR1## (wherein R.sub.1, represents a hydrogen atom, halogen atom, or a lower alkyl group optionally substituted by a halogen atom, and R.sub.1 in each repeating unit may be the same or different), as well as to a process for the preparation thereof and a polymerization initiator therefor. The process of production and polymerization initiator of the present invention enable 100% introduction of a primary amino group into one of the ends of polyether.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.