Alkyl and/or alkenyloligoglycoside preparations having reduced magnesium salt concentrations
View Patent ↗A process for making an alkyl and/or alkenyl oligoglycoside preparation having a magnesium salt concentration of less than about 10 ppm involving the steps of: (a) providing an alkyl and/or alkenyl oligoglycoside preparation having an active substance content of from about 10 to 70% by weight, based on the weight of the preparation; (b) providing an acid component; (c) adjusting the pH of the alkyl and/or alkenyl oligoglycoside preparation to from about 4 to 9.5 by combining the acid component with the alkyl and/or alkenyl oligoglycoside preparation to form a pH-modified alkyl and/or alkenyl oligoglycoside preparation; (d) providing a column charged with an ion exchange resin; and (e) purifying the pH-modified alkyl and/or alkenyl oligoglycoside preparation by passing it through the column of step (d) at a viscosity of from about 20 to 6,000 mPas, and at a temperature of from about 20 to 90° C. to form the alkyl and/or alkenyl oligoglycoside preparation having a magnesium salt concentration of less than about 10 ppm.
1. A process for making an alkyl and/or alkenyl oligoglycoside preparation having a magnesium salt concentration of less than about 10 ppm comprising:
(a) providing an alkyl and/or alkenyl oligoglycoside preparation having an active substance content of from about 10 to 70% by weight, based on the weight of the preparation, and having more than 10 ppm of magnesium;
(b) providing an acid component;
(c) adjusting the pH of the alkyl and/or alkenyl oligoglycoside preparation to from about 4 to 9.5 by combining the acid component with the alkyl and/or alkenyl oligoglycoside preparation to form a pH-modified alkyl and/or alkenyl oligoglycoside preparation;
(d) providing a column charged with an ion exchange resin; and
(e) purifying the pH-modified alkyl and/or alkenyl oligoglycoside preparation by passing it through the column of step (d) at a viscosity of from about 20 to 6,000 mPas, and at a temperature of from about 20 to 90° C. to form the alkyl and/or alkenyl oligoglycoside preparation having a magnesium salt concentration of less than about 10 ppm.
2. The process of claim 1 wherein the preparation of step (a) has an active substance content of from about 20 to 67% by weight, based on the weight of the preparation.
3. The process of claim 1 wherein the preparation of step (a) has an active substance content of from about 40 to 65% by weight, based on the weight of the preparation.
4. The process of claim 1 wherein the pH of the preparation of step (a) is adjusted to from about 5 to 9.
5. The process of claim 1 wherein the pH of the preparation of step (a) is adjusted to from about 6 to 8.
6. The process of claim 1 wherein the pH-modified alkyl and/or alkenyl oligoglycoside preparation of step (e) has a viscosity, prior to entering the column, of from about 50 to 600 mPas.
7. The process of claim 1 wherein the pH-modified alkyl and/or alkenyl oligoglycoside preparation of step (e) has a viscosity, prior to entering the column, of from about 100 to 400 mPas.
8. The process of claim 1 wherein the alkyl and/or alkenyl oligoglycoside preparation is passed through the column at a temperature of from about 30 to 80° C.
9. The process of claim 1 wherein the alkyl and/or alkenyl oligoglycoside preparation is passed through the column at a temperature of from about 40 to 70° C.
10. The process of claim 1 wherein the acid component is selected from the group consisting of a mineral acid, an organic acid, and mixtures thereof.