Betaine group-containing polysaccharides with recurring anhydroglucose units, their synthesis and their use in cosmetic preparations

US5124446A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Burghard Gruning · Essen, DE
• Klaus Hoffmann · Essen, DE
• Gotz Koerner · Essen, DE
• Hans-Joachim Kollmeier · Essen, DE

Key dates

• Filing date: May 17, 1989
• Grant date: Jun 23, 1992
• Expiry date: May 17, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08B31/125
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Betaine group-containing polysaccharides with recurring anhydroglucose units of the average, general formula ##STR1## are disclosed. In this formula the R.sup.1 groups are the same or different and represent methyl, (C.sub.n H.sub.2n O).sub.m R.sup.2 or ##STR2## in which n=2 or 3, m=0 to 10, p=0 to 10 and R.sup.2 is a hydrogen atom or the betaine group ##STR3## in which R.sup.3 and R.sup.4 are the same or different and represent an alkyl group with 1 to 4 carbon atoms and R.sup.5 is a divalent aliphatic hydrocarbon group with 1 to 10 carbon atoms, with the proviso that at least 0.5% of the R.sup.1 groups in the polysaccharide molecule represent the betaine group. Also disclosed is a method for the synthesis of these compounds and their use in cosmetic preparations, especially for the care of the hair. In addition, novel compounds of the general formula ##STR4## are disclosed as intermediates in which the substituents R.sup.3, R.sup.4 and R.sup.5 have the above meaning.