摘要：

ARISTOFLEX AVC (Ammonium Acryloyldimethyltaurate/VP Copolymer) is a novel synthetic polymer used as gelling agent for aqueous systems and thickener for oil-in-water emulsions. This product is insensitive to pH over the pH 4 - 9 range. It shows good stability against degradation by high shear and UV light. Ammonium AcryloyldimethyltaurateNP Copolymer has a good compatibility with polar organic solvents. O/W emulsions may be formulated either by combining it with conventional emulsifiers or by using it as an emulsifer/thickener to give surfactant-free recipes. The product is easy to use as it is pre-neutralised. Cosmetics products containing ARISTOFLEX AVC show a yield stress, provided the polymer concentration exceeds a certain critical amount. Rheological measurements show that the emulsions and gels are viscoelastic, with pronounced elastic properties (G' > G). Ammonium Acryloyldimethyltaurate/ VP Copolymer provides formulations with excellent sensoric properties (good skin feel, low degree of stickiness and/or tackiness).

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