30results about How to "Constant composition" patented technology

A technique for forming an organic polymer thin film on a surface of a substrate with high film formation efficiency and excellent reproducibility and stability is provided. When a vacuum deposition polymerization for forming an organic polymer thin film is performed on a surface of a substrate 12 repeatedly, in which a plurality of kinds of monomers evaporated in a plurality of evaporation source containers 32a, 32b in vacuum state are introduced into a deposition chamber 10 in a vacuum state and polymerized on a surface of the substrate 12 arranged in the deposition chamber 10, each of the monomers in a liquid form is present in the evaporation source containers 32a, 32b in a constant amount every time, at the beginning of the evaporation operation of monomers.

To produce filled thermoplastic polymers starting from a waste thermoplastic base material, the base thermoplastic material is fed into a container (1) provided with a device for mixing and stirring (2,3) in which the base thermoplastic material is softened, the required filler is fed into said device and stirring is continued to thoroughly blend filler and softened material, subsequently collecting the softened and filled material from said container and subjecting it to an extrusion or other densification step.

The invention concerns a cyclic method for separating at least one chemical element E1 from at least one chemical element E2 from an aqueous solution containing said elements, which employs a mixture of two extractants operating in non-overlapping chemical fields. Each cycle of said method comprises: a) co-extracting elements E1 and E2 by means of an organic phase containing a first extractant suited to causing the migration of said elements into said organic phase; b) adding to the organic phase a second extractant suited to selectively retaining the element(s) E2 in said organic phase during step c): c) selectively stripping the element(s) E1 from the organic phase; d) selectively stripping the element(s) E2 from the organic phase; e) separating the first and second extractants present in said organic phase at the end of step d).

The present invention belongs to the field of crystal material technology, and includes mainly setting one support disc inside ceramic crucible, setting one refractory cylinder vertically on the disc, fixing one noble metal ring horizontally on the cylinder, hanging one noble metal cylinder on inner edge of the ring, and making the noble metal crucible rotate around the support shaft and move up and down and the heating winding move up and down with the crucible. During melting material, the noble metal crucible is separated from the noble metal cylinder; and during growing crystal, the noble metal cylinder separates the noble metal crucible into two regions, growth region and melt region. The present invention has the advantages of high material melting efficiency, homogeneous stirring, less volatilization of lithium oxide, easy regulation of temperature field, being favorable to stable crystal growth, etc.

Evaporator unit for an inhaler comprising an evaporator having a heating element for vaporizing a liquid fed through said evaporator. Said evaporator unit comprises a circulation line in which said evaporator is arranged. A circulation device is arranged in said circulation line for circulating the liquid through said circulation line.

A process for the recovery and purification of natural hydrophilic water-soluble products in conjugated form from vegetable aqueous extracts or physiological fluids, by adsorption of the extracts or fluids on a lipophilic resin, followed by desorption and recovery of the eluate, which process is characterized in that the resin is a porous styrene-divinyl benzene polymer brominated at the styrene and / or divinylbenzene portion, with 600 m2 / g area, 1.3 ml / g volume (dry weight), about 200 Angstrom pore size.

A process vessel is provided for separating a multi-component stream. The process vessel includes an inlet for permitting introduction of reaction water stream into the vessel and an outlet for withdrawing a water-rich phase from the vessel. The vessel further includes a plurality of draw-off points for drawing off a phase rich in suspended hydrocarbons from the vessel, the draw-off point(s) being located above the outlet.

Process and apparatus for improving a consistency cross-direction profile of a fiber web in the wet section. The process includes distributing a fiber suspension across a machine width from a headbox to one of on a wire and between two wires, adjusting a cross-sectional basis weight by sectionally mixing, across the machine width, a first suspension having a first solid content and a first percentage composition and a second suspension having second solid content that is one of lower and higher than the first solid content, and a second percentage composition of the solids content of the second suspension differs from the first percentage composition, and sectionally admixing at least a third suspension across the machine width, the third suspension having a solids content that is one of lower and higher than the solids content of at least one of the first and second solids content, and having a third percentage composition that differs from at least one of the first and second percentage compositions. The apparatus includes one of a first machine-wide feed and a first set of individual feeds for the first suspension, a second set of individual feeds for the second suspension, control devices coupled to the second set of individual feeds for regulating a flow of the second suspension, a turbulence generator, a headbox nozzle. At least a third set of individual feeds for a third suspension is positioned at least one of upstream from the turbulence generator and to act equally on each section across the machine width. The third suspension has a solids content that differs from the solids contents of the first and second suspensions, and additional control devices coupled to the third set of individual feeds for regulating a flow of the third suspension.

The invention provides a water-soluble liquid fertilizer containing high-concentration amino acid, and a preparation process thereof, wherein the fertilizer comprises, by mass, 50-55 parts of bone gelatin, 20-25 parts of urea, 8-10 parts of potassium dihydrogen phosphate, 3-5 parts of magnesium sulfate heptahydrate, 0.2-0.5 part of zinc sulfate monohydrate, 0.2-0.5 part of borax, 49-51 parts of ahydrochloric acid solution, 5-8 parts of a carboxymethyl cellulose aqueous solution and 100-120 parts of water. According to the invention, the liquid fertilizer does not contain any plant growth hormones, is environmentally-friendly, has remarkable effect, achieves stable colloid after being compounded with chemical nutrition elements, does not flocculate, does not precipitate and layer after being placed for a long time, can be widely applied to modern agricultural facilities such as drip irrigation and the like, and has important popularization value.

A film carrier tape for mounting electronic devices thereon has a tin-bismuth alloy deposit in which the bismuth content in the deposit is substantially uniform along a thickness direction thereof. The film carrier tape can be produced by plating at least a part of a wiring pattern with a tin-bismuth alloy and washing the tin-bismuth alloy deposit formed by plating with a water-ejecting washing nozzle within 6 seconds after the plating is completed. A plating apparatus for use in the above production includes a washing nozzle for washing the film carrier tape within 6 seconds after the film carrier tape has exited a plating tank.

An electrode wire for electroerosion machining, the electrode wire including a metal core, made of one or more layers of metal or metal alloy. On the metal core there is a coating having an alloy different from that of the metal core, and containing more than 50% by weight of zinc. The coating includes delta-phase copper-zinc alloy.

A vacuum deposition facility for continuously depositing coatings formed from metal alloys having at least two metallic elements on a running substrate is provided. The vacuum deposition facility includes a vacuum deposition chamber, a substrate running through the vacuum deposition chamber and an evaporation crucible inside the vacuum deposition chamber. The evaporation crucible includes a heater and a bath of molten metal alloy which has at least two metallic elements in a predetermined and constant ratio. The evaporation crucible evaporates the molten metal alloy into a vapor. The vacuum deposition facility also includes a coater inside the vacuum deposition chamber and connected to the evaporation crucible. The coater sprays a face of the running substrate with the vapor at a sonic velocity in order to deposit a coating on the running substrate. The vapor includes the at least two metallic elements in the predetermined and constant ratio.

A method for the automatic chromatography of thin-layer plates for thin-layer chromatography with a development chamber 1 in which a thin-layer plate D is completely enclosed, sealed-off and isolated from the external environment. In the development chamber, a front space containing an inner atmosphere is located on the front face of the separation layer of the thin-layer plate. The depth of the front space is about 2 mm and a maximum 3 mm. An inlet is provided at one end of the front space and an outlet is provided at the other end of the front space. During the chromatographic development, a stream of gas of particular composition determined by the user is created throughout the entire front space, the entire inner atmosphere being set in motion, without stagnant or stationary gas phase.

The preparation method of 2-propyl heptanal is characterized by that the valeric aldehyde condensation product 2-propyl-2-heptene aldehyde is contacted with Pd / Al2O3 or amorphous Ni-Cu-B / Al2O3 alloy catalyst bed layer in the two-stage series-connected fixed-bed reactor with reflux under the condition of liquid phase state to make staged selective hydrogenation reaction. The partial reaction product can be back flowed and continuously fed into reactor together with fresh raw material. The invented product is high in purity, and is economic and reasonable.

A method for the automatic chromatography of thin-layer plates for thin-layer chromatography with a development chamber 1 in which a thin-layer plate D is completely enclosed, sealed-off and isolated from the external environment. In the development chamber, a front space containing an inner atmosphere is located on the front face of the separation layer of the thin-layer plate. The depth of the front space is about 2 mm and a maximum 3 mm. An inlet is provided at one end of the front space and an outlet is provided at the other end of the front space. During the chromatographic development, a stream of gas of particular composition determined by the user is created throughout the entire front space, the entire inner atmosphere being set in motion, without stagnant or stationary gas phase.

The invention discloses a PVT method high-quality single crystal growth thermal field device and method, and belongs to the technical field of single crystal preparation. The invention solves the problems that the existing device and method for preparing the single crystal by the PVT method are easy to cause seed crystal damage and the prepared single crystal is poor in quality. A crucible body is inverted, a graphite cylinder is installed in the crucible body through a supporting structure, a raw material containing area is formed among the side wall of the crucible body, the bottom face of the crucible body, the outer wall of the graphite cylinder and the supporting structure, and the raw material containing area is filled with raw materials; a wafer is fixedly installed on the inner wall of the crucible body and located below the supporting structure, a guide cylinder and a supporting graphite cylinder are sequentially installed below the wafer, a crucible cover and the crucible body are installed in a matched mode, a seed crystal support is installed in the crucible cover, seed crystals are arranged in the crucible body through the seed crystal support, and the outer wall of the crucible body and the outer wall of the crucible cover are wrapped with graphite heat preservation materials. The crystal prepared by the single crystal growth device and method is high in quality, and the seed crystal is not easy to damage during preparation of the crystal.

The present disclosure relates to a salt of phenyl pyrimidinone compound, a polymorph thereof and a pharmaceutical composition comprising the same and a use thereof, particularly relates to the hydrochlorate of phenyl pyrimidinone compound of following formula (I-A) and a pharmaceutically acceptable polymorph, solvate, hydrate, co-crystal, anhydrous substance, or amorphous form thereof, a pharmaceutical composition and a pharmaceutical unit dosage comprising the same, the preparing method and use thereof.

The invention discloses a preparation method of a benzene-cyclohexane two-component standard sample. The method comprises the following steps:1, mixing benzene and cyclohexane, and heating; 2, detecting volatile matters in real time when the benzene and cyclohexane are heated through utilizing gas chromatography, and collecting the volatile matters when the temperature of the benzene and cyclohexane mixture reaches the azeotropic temperature of benzene and cyclohexane and the components of the volatile matters do not change; and 3, cooling the collected volatile matters to obtain the benzene-cyclohexane two-component standard sample. The method utilizes the azeotropic characteristic of benzene and cyclohexane and allows the volatile matters to be collected when the benzene and cyclohexane mixture are heated to the azeotropic temperature, so the benzene-cyclohexane two-component standard sample having constant components and a high purity is obtained. The method has the advantages of simple operation, large output, and needing of a distillation device and a chromatographic instrument.

The invention relates to an additive composition and a method of preparing the same. According to one aspect of the present invention, since an additive composition includes a specific amount of alpha-methylstyrenated phenol, the additive composition can be mixed with a main material part or curing agent part for paint and can suppress the occurrence of a discoloration issue.

The olefin polymerization catalyst composition comprises an organometallic compound represented by Formula 1; an organic transition metal compound represented by Formula 2; an organic transition metal compound represented by Formula 3; and an aluminoxane.(Cp′)lM1R1mR2n  Formula 1:wherein M1 is an element selected from the group of elements of Group 1, 2, 12, 13 and 14, (Cp′) is a cyclic hydrocarbyl group of 5 to 30 carbon atoms having at least 2 conjugated double bonds, R1 and R2 are independently a hydrocarbyl group of 1 to 24 carbon atoms, l is an integer of 1 to the valence of M1, m and n are independently an integer of 0 to 2, and l+m+n is equal to the valence of M1,(4HInd)2M2X2  Formula 2:M2X4  Formula 3:wherein in Formulas 2 and 3, (4HInd) is a group having tetrahydroindenyl nucleus, M2 is titanium (Ti), zirconium (Zr) or hafnium (Hf), and X is a halogen atom.

The preparation method of 2-propyl heptanal is characterized by that the valeric aldehyde condensation product 2-propyl-2-heptene aldehyde is contacted with Pd / Al2O3 or amorphous Ni-Cu-B / Al2O3 alloy catalyst bed layer in the two-stage series-connected fixed-bed reactor with reflux under the condition of liquid phase state to make staged selective hydrogenation reaction. The partial reaction product can be back flowed and continuously fed into reactor together with fresh raw material. The invented product is high in purity, and is economic and reasonable.

The invention relates to a preparation method for trace ammonia steam. The preparation method comprises the following steps: (1) preparing an ammonia water solution according to a required ammonia gasconcentration, and putting the ammonia water solution into an ammonia water storage tank; (2) turning on heating power supplies of an ammonia steam generator and an ammonia steam heater, adjusting the inner temperature of the ammonia steam generator to the same temperature as the obtained ammonia steam, and meanwhile, setting the temperature of an ammonia steam heater; (3) after the temperaturesof the ammonia steam generator and the ammonia steam heater reach set values, starting a screw pressurizing pump, slowly adding ammonia water into the ammonia steam generator after pressurization, instantaneously evaporating the dripped ammonia water into ammonia steam in the process of contacting with a heating porcelain ball, and outputting the ammonia steam into the ammonia steam heater from the top of the ammonia steam generator; and (4) further heating the ammonia steam in the ammonia steam heater to a specified temperature, and outputting the ammonia steam to an ammonia steam demand point. The method is simple in technological process and easy to operate, ammonia steam with constant composition and high safety can be obtained, and a good effect is achieved.