What are the ingredients of Nylon66?

What are the ingredients of Nylon66?

Nylon 66
Basic properties of nylon 66
Polymerization process and technology
Adipic acid and hexamethylene diamine can be obtained by polycondensation reaction
nylon
-66. Industrially, in order to react adipic acid and hexamethylene diamine in an equimolar ratio, it is generally made first
Nylon-66 salt
After that, the polycondensation reaction is carried out, and the reaction formula is as follows:
At the same time as the water escapes
Amide bond
The formation of
Linear polymer
. Therefore, the diffusion rate of water in the system determines the reaction rate. Therefore, the key to the preparation process of nylon-66 is to efficiently discharge water from the reaction system in a short time. The above polycondensation process can be carried out continuously or batchwise.
In the polycondensation process, there are side reactions that reduce the molecular weight of nylon 66, such as macromolecular hydrolysis, amination (in excess of amine), acidolysis (in excess of acid), and high-temperature cracking.

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