35results about How to "Efficient split" patented technology

The present invention relates to a method for combining or for splitting the beam paths of substantially nonpolarized light of at least three different wavelength intervals. The splitting or the combining of the beam path of light of those wavelength intervals located between the other wavelength intervals takes place when the beam paths of the light of the two other wavelength intervals are already or still combined. The present invention also relates to an illumination unit comprising a white light source and utilizing this method by means of interference filters for splitting the white light into red, blue and green light beams. The invention also relates to an illumination unit comprising a red, green and blue light source and utilizing these methods by means of interference filters for the combination of the beam paths of the light sources.

The invention belongs to the technical field of melt spinning. A dismantling system for polymer fiber spinning components, which is used to realize the dismantling of spinning components, specifically including a heat preservation trolley, a press, a force wrench, an ejector, a holder, an inner core decomposition device and a separation knife, The heat preservation trolley is used for storage and heat preservation of the spinning assembly; the press is used to apply pressure to the deflector of the spinning assembly, and the pressure head of the press fits the deflector accordingly; the force wrench includes the working end and the force application arm, the working end is matched with the lock nut; the ejector device is used to separate the inner core of the assembly in the spinning assembly from the ejection housing; the clamper is used for clamping and transferring of the spinning assembly; the inner core disassembly device is used for The aluminum ring on the sand box is extruded and deformed; the separating knife is used for component separation and cleaning of residual materials. Also disclosed is a method for dismantling polymer fiber spinning components. The structural design is reasonable, which can greatly improve the disassembly efficiency, and burn the disassembled parts, which improves the cleaning efficiency, reduces the difficulty of operation, and makes each process proceed in an orderly manner.

The invention discloses double-substituted 6-alkyl imidazolium-6-ammonium-beta-cyclodextrin with double positive electricity centers and a preparation method thereof. The structural formula of double-substituted 6-imidazolidinylnio-6-ammonium-beta-cyclodextrin is as shown in the specification. The preparation method comprises the following steps: adding imidazole in 4-methyl-benzene sulfonyl chloride and then reacting with beta-cyclodextrin so as to obtain 6-p-methyl-benzene-sulfonyl-beta-cyclodextrin (Ts-CD) the 6-hydroxyl of which is substituted; reacting Ts-CD with sodium azide so as to obtain 6-azido-beta-cyclodextrin, namely, N3-CD; reacting N3-CD with 2,4,6-trimethyl benzene sulfonyl chloride so as to obtain 6-azido-6-(2,4,6-trimethyl benzene sulfonyl)-beta-cyclodextrin, namely, N3-Mess-CD; reacting N3-Mess-CD with alkyl imidazole so as to obtain double-substituted 6-azido-6-alkyl imidazolium-beta-cyclodextrin, and reducing azido to amino with triphenylphosphine so as to obtain double-substituted 6-amino-6-alkyl imidazolium-beta-cyclodextrin; and carrying out amino hydrochlorination and ion exchange so as to obtain double-substituted 6-alkyl imidazolium-6-ammonium-beta-cyclodextrin with the double positive electricity centers. The obtained cyclodextrin has good water solubility and effective chiral resolution capacity.

The invention relates to a dinitrobenzene formacyl imdo group acenaphthene derivatization compound that has the structure of general expression (I). And R1 represents hydrogen, C1-C3 is alkyl, R2 is alkylidene group, alkenyl, and R3 expresses one-hydrogen or two-hydrogen. After taking acylation reaction of arene, alpha-H replacing reaction of ketone, and reduction amination of ketone carbonyl, and acylation reaction of amine acyl halide, the product would be gained. The invention also relates to the single antipode of the compound, including chiral reagent or chiral additive. It could be usedas chiral reagent in film method and chiral stationary phase or chiral mobile phase.

The invention discloses a pyridinedicarboxamide group bridged bis-β-cyclodextrin stationary phase and a preparation method and application thereof. 3-Isocyanatopropyltriethoxysilane and SBA-15 are prepared as raw materials, and the preparation method has simple process, mild conditions and low cost; The stationary phase is a kind of multi-mode stationary phase with a wide range of separation objects, which can efficiently and quickly resolve a series of acidic, basic, neutral and amphoteric chiral drugs or pesticides in liquid chromatography.

The invention discloses a preparation method for synthesizing (S)-5-bromo-1,2,3,4-tetrahydro-N-Boc-isoquinoline-1-carboxylic acid, belonging to the technical field of pharmaceutical intermediates. Using o-bromophenethylamine as a raw material to react with benzyl chloroformate in an alkaline environment to obtain benzyl o-bromophenethylamine formate, followed by cyclization reaction with glyoxylic acid under acid catalysis, followed by palladium carbon catalytic hydrogenation Deprotection gives 5-bromo-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid, and finally obtains (S)-5-bromo-1,2,3, 4‑Tetrahydro‑N‑Boc‑isoquinoline‑1‑carboxylic acid. The process of the invention is simple and stable in operation, high in yield, friendly to the environment, cheap and easy to obtain raw materials, and is beneficial to industrialized production.