Polyols
US5767324A · kind A · utility
4Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Nov 6, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0008
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Process for reducing the level of unsaturation in a polyether polyol having an oxypropylene content of at least 30% by weight calculated on the total amount of oxyalkylene units in the polyol and having a number average equivalent weight of at least 1000 by subjecting the polyol to ultrafiltration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.