Method for preparing alkali and heat stable polyols
US7141666B2 · kind B2 · utility
3Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2002 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Dec 31, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/07
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a method for preparing alkali and heat stable polyols, whereby sugar alcohols are treated with reagents to obtain stabilized sugar alcohol syrups and the stabilized alcohol syrup is subjected to a purification step by passing the stabilized sugar alcohol syrup over at least one ion-exchanger resin, and the stabilized sugar alcohol syrup being purified by a double passage over a cationic anionic ion-exchanger configuration (CACA), comprising at least a first weak acidic cationic ion-exchanger resin and a second strong, medium or weak basic anionic ion-exchanger resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.