Method for preparing alkali and heat stable polyols

Details Method for preparing alkali and heat stable polyols Method for preparing alkali and heat stable polyols

2006-11-28

2006-11-28

Jiang, Shaojia Anna (Department: 1623)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

C568S833000

Reexamination Certificate

active

07141666

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.

REFERENCES:
patent: 3040104 (1962-06-01), Sarappo et al.
patent: 5773604 (1998-06-01), Lefevre et al.
patent: 6417346 (2002-07-01), Salome et al.
patent: 0262711 (1988-04-01), None
patent: 0711743 (1996-05-01), None
patent: 1095925 (2001-05-01), None
patent: 63/079844 (1988-04-01), None

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