Abstract:
A membrane comprising a composition including (a) 1 to 99 wt-% of at least one polyurethane elastomer comprising at least one hard segment and at least one soft segment, and (b) 99 to 1 wt-% of a solid, wherein said solid is incorporated in said at least one polyurethane elastomer.
Abstract:
A process of free-radically initiated aqueous emulsion polymerization, in which polymerization is conducted in the presence of a stable N-oxyl radical and the diameter of the monomer droplets in disperse distribution in the aqueous medium is ≦500 nm.
Abstract:
The present invention relates to the use of copolymers comprising N-vinylpyrrolidone and a hydrophobically modified acrylic acid derivative as agents for improving the water resistance of a cosmetic formulation, and to the use of these copolymers in sunscreen compositions for increasing the sun protection factor, and furthermore the present invention relates to cosmetic formulations comprising these copolymers.
Abstract:
Process for removal of residual styrene monomers from polystyrene and from blends comprising water-insoluble, crosslinked polyvinylpyrrolidone, via treatment with water, which comprises carrying out the treatment on a particulate solid blend.
Abstract:
Copolymers obtained by free-radical polymerization of a mixture of a) 80 to 99% by weight of a monoolefinic monomer selected fronm the group consisting of acrylic monomers, methacrylic monomers and N-vinyllactam monomers (monomers a)), b) 1 to 20% by weight of a monoolefinic silane monomer (monomer b)), with the proviso that the total of components a) and b) equals 100% by weight,
Abstract:
The following invention relates to copolymers containing silicone groups which comprise, in copolymerized form, at least one monomer with an ionogenic and/or ionic group and at least one crosslinking monomer, to a process for the preparation of such copolymers containing silicone groups by precipitation polymerization, and to the use of these copolymers.
Abstract:
The present invention relates to polymeric products obtainable by mixing (A) polymers which are obtainable by free-radical polymerization of (A-1) ethylenically unsaturated monomers in the presence of (A-2) unsaturated polyalkylene glycols with (B) silicones at a temperature greater than or equal to 30° C. In addition, the invention relates to a process for the preparation of these polymeric products, and to their use in cosmetic preparations, in particular in hair cosmetic preparations.
Abstract:
Aqueous dispersion obtainable by free-radical polymerization of a) at least one N-vinyl-containing monomer b) at least one polymeric dispersant c) at least one polymeric precipitation agent d) at least one crosslinker e) optionally further monomers f) optionally at least one regulator g) optionally a buffer substance where the weight ratio of b) to c) is in the range from 1:50 to 1:0.02.
Abstract:
A process for preparing an aqueous polymer dispersion by free-radically initiated polymerization of free-radically polymerizable compounds I with moderate solubility in water, whose disperse polymer particles contain not only compounds I but also compounds II with a very low solubility in water where a mixture consisting of a portion of the compounds I and consisting of the compounds II is used to produce an aqueous emulsion I with a droplet size .ltoreq.500 nm, and at least a portion of the aqueous emulsion I is supplied continuously to the polymerization vessel as a feed stream I, in the course of continuing free-radical polymerization, during which the continuous feed stream I is accompanied, at least some of the time, by a feed stream II consisting of another portion of the compounds I or of the aqueous emulsion II thereof with a droplet size .gtoreq.1000 nm.
Abstract:
The process for producing pressure-sensitive adhesive tapes comprises the steps ofclamping a tube strip of a tube skin filled with a pressure-sensitive adhesive composition into an apparatus comprising a tubular appliance,passing the tube strip through the tubular appliance while opening the tube skin longitudinally to form a tape,separating the tape from the pressure-sensitive adhesive composition in such a way that some of the pressure-sensitive adhesive composition remains as a film on the tape,causing the separated pressure-sensitive adhesive composition to exit the apparatus by way of a discharge aperture, andwinding up the tape separated from the pressure-sensitive adhesive composition, with the pressure-sensitive adhesive film that has remained thereon, as a pressure-sensitive adhesive tape.