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Patent
Title
Viskositätsregulator, Verfahren zu dessen Herstellung und dessen Verwendung
Other Title
Viscosity regulator, for thickening surfactant-containing cosmetic or pharmaceutical preparations, is obtained by (hydroxy)alkylating then carboxymethylating starch
Abstract
(A1) Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Viskositaetsregulators durch Einfuehrung von hydrophoben wie hydrophilen Gruppen in ein Staerkemolekuel. Ebenso betrifft die Erfindung derart hergestellte Viskositaetsregulatoren und deren Verwendung. Die erfindungsgemaessen Viskositaetsregulatoren koennen als Emulgatoren oder als Verdickungsmittel tendsidhaltiger Systeme, z. B. in kosmetischen oder pharmazeutischen Zubereitungen, eingesetzt werden.
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DE 102007015282 A1 UPAB: 20081126 NOVELTY - Production of a viscosity regulator (I) involves (a) hydrophobizing starch by alkylation and/or hydroxyalkylation and (b) carboxymethylating the product by reaction with a halo-carboxylic acid. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) the viscosity regulators (I) obtained by the process; and (2) oil-in-water emulsions (A), containing an oil component, a lipophilic or hydrophilic active agent and (I), as emulsifier. USE - The use of (I) is claimed for thickening cosmetic or pharmaceutical preparations containing surfactants (specifically sodium lauryl ether sulfate, preferably present in the preparation at 0.5-3 wt. %). The use of (A) as a cosmetic or pharmaceutical preparation is also claimed. Typically (A) is a surfactant-containing cosmetic cleansing product. ADVANTAGE - (I) show good thickening properties in surfactant-containing formulations and cause little turbidity. The obtained preparations (A) have a stable viscosity.
Inventor(s)
Volkert, B.
Lehmann, A.
Nerenz, H.
Schrader, A.
Patent Number
102007015282
Publication Date
2007
Language
German