摘要:
It is the object of the invention to propose a method for open-end rotor spinning, wherein the formation of cover yarn, in particular the so-called “belly bands”, is at least appreciably reduced. In accordance with the invention, the fiber flow exiting a fiber guide channel has a directional component in the direction of rotation of the rotor, while the yarn leg (3) extending, from the draw-off nozzle to the rotor groove, is curved opposite the direction of rotation of the rotor, at least near the rotor groove (1), during the spinning process. The creation of this direction of curvature of the yarn leg (3) takes place during the piecing process.
摘要:
The present invention relates to cosmetic compositions comprising, as solid particles, silicone methacrylate particles which are obtainable by the steps a) producing an emulsion of water and an organic phase, where the organic phase comprises specifically organopolysiloxanes modified in the terminal and/or lateral position with methacrylate groups, or mixtures thereof, with the addition of at least one emulsifier and optionally one or more coemulsifiers, where the organic phase forms the internal phase of the emulsion, and fully polymerizing the internal phase in the presence of a radical initiator, which is added to the external phase (aqueous phase) in a concentration of from 0.1 to 40% by weight based on the internal phase, and also to corresponding cosmetic compositions.
摘要:
Fumed silanized silica with the following physico-chemical data: Grindometer value less than 20 μm Tamped density 25 to 85 g/l is prepared by grinding fumed silica which has been silanized. It can be used in silicone rubber.
摘要:
Low-viscosity, finely divided oil-in-water emulsions with long-term stability, comprising an emulsifier combination of noncarbohydrate polyol partial esters of linear or branched, saturated or unsaturated fatty acids having 6 to 22 carbon atoms (emulsifier component A) and emulsifiers based on carbohydrate (emulsifier component B), one or more oils, and preservative are provided. Additionally, the present invention provides for the preparation of the emulsions from concentrates, the corresponding concentrates, and the use of the emulsions according to the invention for producing cosmetic, dermatological or pharmaceutical preparations, in particular for producing impregnation emulsions for wet wipes.
摘要:
Surface-modified, doped, pyrogenically produced oxides surface-modified with one or several compounds from the following groups: a) Organosilanes of the type (RO)3Si(CnH2n+1), (RO)3Si(CnH2n−1) b) R′x(RO)ySi(CnH2n+1), (RO)3Si(CnH2n+1) c) X3Si(CnH2n+1), X3Si(CnH2n−1) d) X2(R′)Si(CnH2n+1), X2(R′)Si(CnH2n−1) e) X(R′)2Si(CnH2n+1), X(R′)2Si(CnH2n−1) f) (RO)3Si(CH2)m—R′, g) (R″)x(RO)ySi(CH2)m—R′, h) X3Si(CH2)m—R′, i) (R)X2Si(CH2)m—R′, j) (R)2XSi(CH2)m—R′, k) Silazanes of the type l) Cyclic polysiloxanes, m) Polysiloxanes or silicone oils.
摘要:
A surface-modified, aerogel-type, structured silica is produced by spraying an aerogel-type, structured silica with a silanizing agent, post-mixing and conditioning. It can be used as a flatting agent.
摘要:
Functionalized silicas with 3-methacryloxypropylsilyl and/or glycidyloxypropylsilyl groups on the surface are prepared by mixing the silicas with the silane and heat-treating the mixture. The silicas are employed, for example, in solvent-containing coatings.
摘要:
A dry compressing vacuum pump (1) has a continuous or graduated inner compression. A gas ballast device (8) selectively adds a ballast gas to a pumped gas. The gas ballast device has an isolating valve (11), a non-return valve (12) which prevents the escape of gases from the pump through the gas ballast device to the outside, and a pressure differential valve (13).
摘要:
Granules based on titanium dioxide with the characteristics: Average particle diameter: 10 to 150 &mgr;m BET surface area: 25 to 100 m2/g pH: 3 to 6 Compacted density: 400 to 1,200 g/l The granules are prepared by dispersing titanium dioxide in water, spray-drying and silanizing. In the silanized form, the granules have the following characteristics: Average particle diameter: 10 to 160 &mgr;m BET surface area: 15 to 100 m2/g pH: 3.0 to 9.0 Compacted density: 400 to 1,200 g/l Carbon content: 0.3 to 12.0 wt. % The granules are used, inter alia, as catalyst supports, in cosmetics, as sun screens, in silicone rubber, in toning powder, in lacquers and colorants, as grinding and polishing agents and as a raw material for producing glass and ceramics.
摘要:
PEG-free, cold-preparable, prolonged-stability, low-viscosity, fine oil-in-water emulsions, their preparation from preferably clear oil phases or via preferably clear to transparent microemulsion-like concentrates, the corresponding oil phases or microemulsion-like concentrates and the use of the inventive emulsions for producing cosmetic, dermatological, pharmaceutical or industrial formulations, especially for the production of impregnating emulsions for wet wipes or for sprayable care emulsions are provided.