Abstract:
The invention relates to nanoparticulate formulations containing at least one active substance or substance with a specific action and at least one statistical radical copolymer. The copolymers are composed of monomers that carry sulphonic acid groups and additional olefinically unsaturated compounds. The formulations can be dispersed in nanoparticulate form in an aqueous medium. The invention also relates to methods for producing the solid and liquid formulations and to the use of the latter.
Abstract:
The invention relates to a method and a device for the parallel, automated analysis of blushing in n samples of dispersion films. According to said method: (a) an illuminated array of n spatially separate samples of dispersion films is prepared, (b) the array of n samples is photographed using a CCD camera at m+l different points in time to to tm and the photographs are digitised, (c) from said m+l different digitised photographs for at least part of the n samples, several luminosity values B (k, ti) are determined automatically for each sample at different points in time ti, selected from to to tm, whereby B (k, ti) is the luminosity value of the k-th n sample at each point in time t; and represents a measurement of the blushing in said sample at said point in time, (d) from said different luminosity values B (k, ti) for at least part of the n samples, values P (k) for a parameter that characterises the kinetics of the blushing is determined for each sample, whereby P (k) is the value of the characteristic parameter for the k-th n sample.
Abstract:
The present invention relates to light-protective preparations, particularly in the field of cosmetics, based on mixed inorganic-organic systems. The present invention relates particularly to light-protective preparations containing nanoparticles of at least one metal derivative, at least one light-protective compound chemically bound to said metal derivative nanoparticles, and at least one additional organic UV light-protective agent which is different from the light-protective compound which is bound to the metal derivative nanoparticles.