Stabilizers for polymer polyols
US5854386A · kind A · utility
27Cited by
4References
29Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 25, 1997 |
| Grant date | Dec 29, 1998 |
| Priority date | — |
| Expiry date | Aug 25, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/2696
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Unique, well defined polyethers containing both hydroxyl-functionality and unsaturation-functionality are prepared by oxyalkylating an unsaturated monomer having at least one oxyalkylatable hydrogen in the presence of an effective amount of a double metal cyanide complex catalyst, optionally, when necessary, in the presence of a free radical polymerization inhibitor. The resulting polyethers are eminently suitable for such uses as polymer polyol stabilizers or stabilizer precursors, and both in situ and ex situ impact modifiers for thermoplastics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.