- N- Cyanoethyl -N- benzyl aniline as well as preparation method and application thereof
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N - The preparation method of. cyanoethyl - N N-benzyl aniline of the present invention comprises the following steps: Reaction: Reaction Step, The reaction product, obtained by distilling, cyanoethylaniline; chloride and a pure base in a reaction kettle to obtain the dye: and not allowing the content, of toluene chloride, chloride to exceed, after the dye synthesized from the intermediate; cyanoethyl - N N-benzyl aniline is distilled off: to obtain a distilled product, of the present invention, N - and the reaction step. is a process N - of preparing the reaction . The method comprises reacting the organic phase with water N - and distilling the organic phase, Oeko - Tex Standard100.
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Paragraph 0044-0060
(2020/03/17)
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- Preparation method of N-cyanoethyl-N-benzylaniline
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The invention discloses a preparation method of N-cyanoethyl-N-benzylaniline. Solid super base is used as a catalyst, a phosphate buffer solution is used as a solvent, aniline, benzyl chloride and acrylonitrile are used as raw materials, and one-pot reaction is carried out to synthesize N-cyanoethyl-N-benzylaniline. Compared with a traditional two-step method, in the preparation method provided bythe invention, a toxic and harmful metal catalyst and co-catalyst are not used, anhydrous aluminium chloride as a catalyst is not used, so that less wastewater is generated, purification and treatment on a reaction intermediate are not needed, the reaction process is simple, operation is easy, and the buffer solution and the catalyst can be circularly used.
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Page/Page column 4-6
(2019/02/10)
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- Production method of N,N-cyanoethyl benzyl aniline
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The invention provides a production method of N,N-cyanoethyl benzyl aniline, wherein the production method comprises the following steps: (1) adding N-cyanoethylaniline, benzyl chloride and a phase transfer catalyst A into a reaction kettle under control of a DCS system, heating up, then according to pH change feedback in the reaction system, automatically controlling the adding amount of an acidbinding agent, and controlling the pH of the reaction system to 4-9 until the end of the reaction, to obtain a material I; (2) transferring the material I obtained in the step (1) to a dilution kettlehaving pre-addition of a dilute hydrochloric acid aqueous solution, cooling, then adding an acid binding agent and adjusting the pH of the system to neutral, filtering and washing with water, separating to obtain a product N,N-cyanoethyl benzyl aniline, and collecting a chlorizated salt mother liquid; and (3) decoloring the chlorizated salt mother liquid by activated carbon, then carrying out concentrated crystallization to obtain chlorizated salt crystals, concentrating produced water and recycling. The method adopts the DCS system for realizing automation control; the produced mother liquidis subjected to concentrated crystallization to recycle the chlorinated salt for resource utilization, the cost is reduced, the technological process is concise, and the method is suitable for popularization and application in industry.
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Paragraph 0041; 0042; 0043; 0046; 0047; 0050-0051; 0053-0054
(2018/03/25)
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- Rubine disazo acid dyes for polyamides
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Dyes of the formula STR1 wherein B and D are each independently 1,4-phenylene or 1,4-naphthylene; M is hydrogen, lithium, sodium, potassium or ammonium; A1 is hydrogen, C1-4 alkoxy, C1-4 alkyl, trifluoromethyl, nitro, chloro, bromo, cyano, or hydroxy; B1 and B2 are each hydrogen, C1-3 alkoxy, C1-3 alkyl, chloro or bromo; D1 is hydrogen, C1-4 alkoxy, C1-4 alkyl, or chloro; D2 is hydrogen, C1-4 alkoxy, C1-4 alkyl, chloro, bromo, fluoro, or acylamino, acyl being C1-5 alkanoyl, C1-5 alkylsulfonyl, benzoyl or benzenesulfonyl, each acyl unsubstituted or substituted with 1 to 3 of C1-2 alkyl, C1-2 alkoxy, chloro, bromo, cyano, or hydroxy; and R1 and R2 are each C1-6 alkyl, C1-6 chloro or bromoalkyl, C2-6 hydroxy- or dihydroxyalkyl, C2-6 alkoxyalkyl, C1-6 cyanoalkyl, or phenyl-C1-2 alkyl (phenyl unsubstituted or substituted with 1 to 3 of C1-2 alkyl, C1-2 alkoxy, chloro, bromo, cyano or hydroxy) are useful in dyeing natural and synthetic polyamide fibers in deep and level shades of red to blue.
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