摘要:
An electron beam line evaporator for coating heat-sensitive strips or substrates includes a magnetic trap overlying an evaporation crucible to prevent unpermissible heating and static electrification by back-scattered electrons, complemented with means to influence the injection angle of a dynamically deflected electron beam in such a manner that the beam enters the horizontal magnetic field of the trap at the same angle in each deflection phase independent of stray fields. Such means are arranged inside a gap of a pole shoe necessary for the horizontal magnetic field used by the trap and are operative to generate a vertical magnetic field variable in time and locally alongside the pole shoe.
摘要:
An N-substituted triacetonediamine compound is prepared by reacting 4-amino-2,2,6,6-tetramethylpiperidine or a derivative thereof with a carbonyl compound in a reductive amination, wherein reductive conditions are established by conducting the reaction in the presence of hydrogen and in the presence of a supported catalyst, wherein the supported catalyst includes at least one metal M, wherein the metal M is selected from the group consisting of V, Cr, Mo, Mn, Ni, Pd, Pt, Fe, Ru, Os, Co, Rh, Ir, and Cu.
摘要:
The present invention provides a composition comprising 5,5′-carbonylbis(isobenzofuran-1,3-dione), 3,3′,4,4′-benzophenonetetracarboxylic acid and at least one monoanhydride compound selected from the group consisting of methylhexahydroisobenzofuran-1,3-dione, 5-methyl-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1,3-dione, 5-methyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione, 3-methylfuran-2,5-dione, 3,3,4,4,5,5-hexafluorodihydro-2H-pyran-2,6(3H)-dione and 3,3-dimethyldihydrofuran-2,5-dione. The invention also provides a hardener system for an epoxy resin, said hardener system comprising said composition. The invention also provides a method for hardening an epoxy resin employing the inventive composition.
摘要:
The present invention provides a composition comprising 5,5′-oxybis(isobenzofuran-1,3-dione), 4,4′-oxybis(ortho-phthalic acid) and at least one monoanhydride compound selected from the group consisting of methylhexahydroisobenzofuran-1,3-dione, 5-methyl-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1,3-dione, 5-methyl-3 a,4,7,7a-tetrahydroisobenzofuran-1,3-dione, 3-methylfuran-2,5-dione, 3,3,4,4,5,5-hexafluorodihydro-2H-pyran-2,6(3H)-dione, and 3,3-dimethyldihydrofuran-2,5-dione. The invention also provides a hardener system for epoxy resins, said hardener system comprising said composition. The invention also provides a method for hardening of epoxy resins employing the inventive composition.
摘要:
CO2 is absorbed from a gas mixture by contacting the gas mixture with an absorption medium which comprises water and 2,3-dihydro-2,2,4,6-tetramethylpyridine. The absorption media of the invention include water, 2,3-dihydro-2,2,4,6-tetramethylpyridine, and at least one organic solvent in a homogeneous phase. An apparatus of the invention for removing CO2 from a gas mixture comprises an absorption unit, a desorption unit, and a circulating absorption medium of the invention.
摘要:
The invention relates to a device for filling cigarette tubes with tobacco, wherein the device comprises at least one suitable separating means by means of which the tobacco can be detached from a tobacco block, and also at least one suitable filling means with which the cigarette tube can be filled with the tobacco, wherein the device comprises at least one suitable portioning means for the portioning of a tobacco block.
摘要:
The invention relates to a method for producing UV-absorbing transparent wear protection layers by vacuum coating in which at the same time or immediately one after the other at least one inorganic compound that forms layers with high wear resistance and an inorganic compound that forms layers with high UV-absorption are deposited on a substrate respectively by means of reactive or partially reactive plasma-aided high-rate deposition.
摘要:
A process for preparing high-purity cyclopropyl methyl ketone from compositions which contain cyclopropyl methyl ketone, 4,5-dihydro-2-methylfuran, addition products of 4,5-dihydro-2-methylfuran by a continuous rectification process in which at least a portion of the composition to be purified is introduced into a rectification apparatus via a side feed located above the bottom portion of the apparatus.
摘要:
A process an device for ion-supported vacuum coating. The process and the affiliated device is intended to permit the high-rate ating of large-surfaced, electrically conductive and electrically insulating substrates with electrically insulating and electrically conductive coatings with relatively low expenditure. The substrates are predominantly band-shaped, in particular plastic sheets with widths of over a meter. According to the invention, in an intrinsically known device for vacuum coating, alternating negative and positive voltage pulses are applied to the electrically conductive substrate or in electrically insulating substrates, to an electrode disposed directly behind them, e.g. the cooling roller, relative to the plasma or to an electrode that is disposed almost at plasma potential. The form, the voltage, and the duration of the pulses are adapted to the coating task and the material. The process is used particularly for depositing abrasion protection, corrosion protection, and barrier coatings. The user is the packaging industry, among others.