Pipeline reaction system and method for preparing light stabilizer
A light stabilizer, pipeline reaction technology, applied in chemical/physical/physical-chemical stationary reactors, chemical instruments and methods, chemical/physical/physical-chemical processes, etc., can solve unfavorable filtration and post-treatment, small product particles , long reaction time and other problems, to achieve the effect of facilitating filtration and post-processing, short reaction time and rapid reaction
Pending Publication Date: 2020-04-17
安徽新秀化学股份有限公司
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Problems solved by technology
In the prior art, the product particles after reaction are small, which is not conducive to filtration and post-processing; the reaction speed is slow, side reactions are prone to occur, and the overall reaction time is long
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[0035] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of...
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Abstract
The invention discloses a pipeline reaction system and method for N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)-1,3-phthalamide. The pipeline reaction system comprises: a reaction kettle body, wherein thetop of the reaction kettle body is connected with a stirring rack, the top end of the stirring rack is connected with a gear motor, a stirring shaft extends into the reaction kettle body from the topof the reaction kettle body, and the part, located in the reaction kettle body, of the stirring shaft is connected with a stirrer; an inner coil pipe, wherein the inner coil pipe extends into the reaction kettle body from one side of the top of the reaction kettle body, the inner coil pipe extends upwards out of the top of the reaction kettle body from the lower part of the reaction kettle body,an inner coil refrigerating fluid inlet is formed in one end of the inner coil pipe, and an inner coil refrigerating fluid outlet is formed in the other end of the inner coil pipe; and an outer coil pipe, wherein one end of the outer coil pipe is connected to the top of the reaction kettle body, the outer coil pipe extends downwards and is wound outside the reaction kettle body, the lower end of the outer coil pipe is connected to the bottom of the reaction kettle body, and a material inlet pipe is arranged at the lower end of the outer coil pipe. According to the invention, reaction is rapid,side reactions are few, and reaction time is short.
Description
technical field [0001] The invention relates to a pipeline reaction system and method for preparing light stabilizer N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1,3-phthalamide, It belongs to the technical field of chemical raw material production. Background technique [0002] Light stabilizer N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1,3-benzenedicarboxamide, also known as bis(2,2,6,6- Tetramethyl-3-piperidinylamino)-isophthalamide, hindered nylon stabilizer or nylon stabilizer ST-101, which has the molecular formula C 26 h 42 N 4 o 2 , molecular weight 442.63728, density: 1.09, boiling point: 605.1°Cat760mmHg. The synthetic route of light stabilizer N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1,3-benzenedicarboxamide is tetramethylpiperidinamine and m-benzene Diformyl chloride. [0003] Light stabilizer N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1,3-benzenedicarboxamide can eliminate free radicals and prevent chain degradation reaction To carry out, that is, to...
Claims
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IPC IPC(8): B01J4/00B01J19/00B01J19/18C07D211/16
CPCB01J19/18B01J19/0013C07D211/16B01J4/001B01J2219/00081
Inventor 张秀秀吴春业盖旭巧
Owner 安徽新秀化学股份有限公司