摘要:
A three-dimensional flow cell for aligning non-isometric particles in a liquid sample in two axes, a method of aligning non-isometric particles in a liquid sample, a reflectance sensor which has the three-dimensional flow cell according to the invention, a method of measuring the reflectance of a liquid sample containing non-isometric particles and the use of the reflectance sensor according to the invention.
摘要:
The invention relates to reflectance sensors built up from an optical unit, a sample analysis unit and a system control unit, and to a method of measuring the reflectance of a sample in the form of a liquid pigment preparation, and to the use of a reflectance sensor according to the invention for the measurement of the reflectance of liquid pigment preparations in various process stages during the production, further processing and use of the liquid pigment preparations.
摘要:
A three-dimensional flow cell for aligning non-isometric particles in a liquid sample in two axes, a method of aligning non-isometric particles in a liquid sample, the use of the three-dimensional flow cell, a reflectance sensor which has the three-dimensional flow cell according to the invention, a method of measuring the reflectance of a liquid sample containing non-isometric particles and the use of the reflectance sensor according to the invention.
摘要:
Pulverulent coating materials composed of (A) leaflet-shaped particles having a ratio of laminar diameter D to layer thickness d, i.e., D:d of from 100:1 to 10:1, comprising at least one leaflet-shaped effect pigment in complete or near-complete parallel orientation to the surface of the leaflet-shaped particles, and (B) transparent, dimensionally stable, non-leaflet-shaped particles or leaflet-shaped particles having a ratio of laminar diameter D to layer thickness d, i.e., D:d of
摘要:
The present invention relates to a process for producing single-coat or multicoat clearcoat finishes on primed or unprimed substrates by applying at least one powder coating dispersion, in particular a powder clearcoat slurry, to the substrate and then curing the resulting film(s) thermally and/or with actinic radiation, in which at least one polyvalent inorganic acid and/or oxalic acid are or is added to at least one powder coating dispersion, in particular to a powder clearcoat slurry.
摘要:
Pigmented powder coating suspensions (pigmented powder slurries) preparable by (1) mixing at least two liquid components comprising in each case at least one liquid starting product in a static mixer, to give a liquid, (2) emulsifying the liquid (1) in an aqueous medium in a dispersing unit, to give an aqueous emulsion of liquid particles, and (3) cooling the emulsion (2) so that a suspension of dimensionally stable particles is formed, wherein said aqueous medium comprises the suspension of at least one pigment; and also processes for preparing them and their use as coating materials, adhesives, and sealing compounds or to prepare such compositions.
摘要:
A method for preparing thiol compounds, comprising: (1) reacting cysteine by a non-enzymatical addition reaction with a compound having the formula (R.sub.1)(R.sub.2)C.dbd.C(R.sub.3)--CO--R.sub.4 via an --S-- bridge to form a cysteine conjugate, wherein the symbols R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent hydrogen or an optionally saturated and/or heterogeneous hydrocarbon group or wherein a combination of two groups selected from the group consisting of R.sub.1, R.sub.3 and R.sub.4, together with the carbon atoms to which the groups are bonded, form an optionally saturated and/or heterogeneous hydrocarbon ring system of five or six members; and (2) reacting the cysteine conjugate so obtained in a concentration of >1 mM conjugate with a microbial .beta.-lyase to form a thiol compound.
摘要:
Powder coating materials preparable by (1) mixing at least two liquid components comprising in each case at least one liquid starting product in a static mixer, to give a molecularly disperse and/or finely dispersed liquid mixture, (2) emulsifying the liquid mixture (1) in an aqueous medium in a dispersing unit, to give an aqueous emulsion of liquid particles, (3) cooling the emulsion (2) so that a suspension of dimensionally stable particles is formed, (4) isolating the dimensionally stable particles from the suspension (3) or alternatively (3) isolating the dimensionally stable particles directly from the emulsion (2); and also processes for preparing them and their use as coating materials, adhesives, and sealing compounds or to prepare such compositions.
摘要:
A pseudoplastic powder clearcoat slurry which is free from organic solvents and comprises solid and/or highly viscous, particles which are dimensionally stable under storage and application conditions and have an average size of from 0.8 to 20 μm, at least 99% of the particles having a size ≦30 μm, which is preparable by 1) emulsifying an organic solution comprising binder and crosslinking agent to give an emulsion of the oil-in-water type, 2) removing the organic solvent or solvents, and 3) wet grinding the resulting slurry; and also the use of the powder clearcoat slurry to produce clearcoats for automotive OEM finishing and automotive refinish, for furniture coating and for industrial coating, including coil coating, container coating and the coating of electrical components.
摘要:
A pseudoplastic powder clearcoat slurry which is free from organic solvents and comprises solid and/or highly viscous, particles which are dimensionally stable under storage and application conditions and have an average size of from 0.8 to 20 μm, at least 99% of the particles having a size ≦30 μm, which is preparable by 1) emulsifying an organic solution comprising binder and crosslinking agent to give an emulsion of the oil-in-water type, 2) removing the organic solvent or solvents, and 3) wet grinding the resulting slurry; and also the use of the powder clearcoat slurry to produce clearcoats for automotive OEM finishing and automotive refinish, for furniture coating and for industrial coating, including coil coating, container coating and the coating of electrical components.