Method for preparing alkali and heat stable polyols
AssigneeTate & Lyle Europe
InventorFrank Van Lancker
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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.
Claims17
Method for preparing alkali and heat stable polyols, in which:
- sugar alcohols are treated with reagents to obtain a stabilized sugar alcohol syrup, and
- the stabilized sugar alcohol syrup is subjected to a purification stage by passing said stabilized sugar alcohol syrup over at least one ion-exchanger resin,
- wherein the stabilized sugar alcohol syrup is purified by a double passage over an 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.
Dependencies are inferred from the claim text.