Process for preparing polyalkylene oxide having unsaturated end groups
US4774356A · kind A · utility
17Cited by
3References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 24, 1986 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | Mar 24, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/337
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polypropylene oxide having unsaturated end groups is prepared by polymerizing alkylene oxide in the presence of a complex catalyst prepared by reacting an organoaluminum compound with a porphyrin compound and an active hydrogen-containing compound and converting at least one hydroxyl end groups into an unsaturated end group(s), the prepared polymer having a narrow distribution of molecular weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.