Process for bleaching discolored surface-active alkyl glycosides

Details Process for bleaching discolored surface-active alkyl glycosides Process for bleaching discolored surface-active alkyl glycosides

1994-10-17

1996-04-23

Robinson, Douglas W.

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

Organic compounds

Carbohydrates or derivatives

536124, 536 186, C07H 106, C07H 1504

Patent

active

055104827

ABSTRACT:
The crude reaction products from the synthesis of alkyl glycosides are bleached by kneading the material substantially freed from the excess fatty alcohol and containing at most limited quantities of water with an oxidizing agent at such elevated temperatures that the reaction mixture lends itself to plastic processing. Temperatures of from about 50.degree. to 150.degree. C. are particularly suitable, although it is best to apply temperatures in the range from about 80.degree. to 100.degree. C. using aqueous hydrogen peroxide as the oxidizing agent. Bleaching is carried out under basic conditions, optionally by addition of an alkaline compound, such as for example 50% sodium hydroxide solution. The bleached product accumulates in the form of a solid. It is preferably mixed with typical compatible solids, more particularly typical constituents of detergents and cleaning preparations, to form a solid and preferably free-flowing alkyl glycoside compound.

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patent: 4959468 (1990-09-01), Ravi et al.
patent: 4963158 (1990-10-01), Beaujean et al.

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