abstract |
Polymeric glucan ether derivatives (A) containing monomer units of formulae (I) and (II) are new. (I) are bound to (II) via a 1,3- beta -glycosidic bond; X = CH2-COO, CH2-CH2-COO, CH(CH3)-COO and/or CH2-CH2-SO3; M = H or an alkali and/or alkaline earth metal. Also claimed are topical preparations containing (A). |