Process for the purification of carbohydrate derivatives with su

Details Process for the purification of carbohydrate derivatives with su Process for the purification of carbohydrate derivatives with su

1996-02-08

1997-12-30

Kight, John

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

Organic compounds

Carbohydrates or derivatives

536124, C07H 106, C07H 100

Patent

active

057032289

ABSTRACT:
A process is described for the purification of carbohydrate derivatives with surface-active properties in which an extraction process is used to liberate the solid or liquid starting material from undesired lipophilic by-products by the use of compressed propane or a proportionate mixture thereof with butane at pressures between 8 and 150 bar and a process temperature below 120.degree. C. In this way it is possible to isolate valuable raw materials in a gentle manner either batch-wise or continuously which meet the high purity requirements, for example in the field of cosmetics.

REFERENCES:
patent: 2548434 (1951-04-01), Leader
patent: 2682551 (1954-06-01), Miller
patent: 5405633 (1995-04-01), Heidlas et al.
patent: 5466842 (1995-11-01), Heidlas et al.
Siegfried et al, Angewandte Chemie (1978), 90(10), "Trennung Schwerfluch-Tiger Stoffe mit Komprimierten Gasen in Gegenstromkolonnch", pp. 794-798.

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