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Preparation technology of MC nylon active material

A technology for preparation process and active material, which is applied in the field of preparation of MC nylon active material, can solve the problems of incomplete and thorough reaction, inability to use industrial production, and low production efficiency, so as to achieve complete reaction, avoid waste, and improve production efficiency effect

Inactive Publication Date: 2006-01-11
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the reactions of each stage take place in the same reactor, the reactions of each step affect each other, so that each step cannot react completely and thoroughly, and also takes a lot of time, so that the method has low production efficiency and low yield. 1. The performance of the material is unstable after polymerization, so it cannot be used in industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Take 1 ton of caprolactam and put it into the melting material kettle, melt the solid raw material into a liquid state, and raise its temperature to 120-135°C; fill the melting material kettle with nitrogen and pressurize to form a pressure difference, so that the material is transferred, and through the feeding The tube is used to measure the material delivery from the melting tank to the reactor; the delivery volume of the material is controlled by controlling the opening time of the delivery valve. According to Q=λA(2gh) 1 / 2 The formula calculates the flow rate, and then determines the delivery time. The pipeline flow coefficient λ is 0.287, the cross-sectional area A is 3.14 square centimeters, and the pipeline pressure difference h is 10m (0.10MPa), then the pipeline flow rate is 12.5kg / s, the delivery time is set to 32s, and 400Kg of raw materials are delivered to the reactor middle. Afterwards, add 400Kg of raw materials to the molten material kettle. A conden...

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PUM

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Abstract

A process for preparing active nylon MC includes such steps as fusing the nylon monomer, loading in reactor, dewatering, adding catalyst, dewatering, examining specimen, loading in transfer container, proportionally loading in stirrer, adding cocatalyst and stirring.

Description

technical field [0001] The invention relates to a preparation process of MC nylon active material, which belongs to the technical field of industrialized activation treatment of nylon monomer. Background technique [0002] MC nylon monomer activation technology is currently mostly batch-wise preparation in a single tank. Its equipment is a closed reactor with a condensation pipe as high as 5-8 meters. After the materials are put into the reactor, they are dehydrated, catalysts Co-catalysts are all carried out in this reactor. Since the reactions of each stage take place in the same reactor, the reactions of each step affect each other, so that each step cannot react completely and thoroughly, and it also takes up a lot of time, so that the method has low production efficiency and low yield. 1. The performance of the material is unstable after polymerization, so it cannot be used in industrial production. Contents of the invention [0003] An object of the present inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/00C07C231/22B29C39/00
Inventor 王健军刘群昌付进廷张飞帆吴良如
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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