Process for producing caprolactam and nylon 66 salt copolymer slice

A caprolactam, production process technology, applied in the production process field of caprolactam and nylon 66 salt copolymer chips, can solve the problems of poor low temperature performance, need to be further improved, poor flexibility, etc.

Active Publication Date: 2012-09-05
浙江华建尼龙有限公司
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Problems solved by technology

[0002] Nylon 6 slices are the base material for the production of nylon film and fishmesh, and are widely used in food packaging, pharmaceutical packaging, packaging of electronic industry materials, and fishmesh industry. However, due to the high melting point and glass transition temperature of nylon 6, The low temperature performance is poor, the film rupture rate is high when the film is drawn, and the softness is poor at low temperature, especially as a spinning fish mesh material, its transparency needs to be further improved

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  • Process for producing caprolactam and nylon 66 salt copolymer slice
  • Process for producing caprolactam and nylon 66 salt copolymer slice

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Embodiment Construction

[0020] See attached figure 1 , the production process of caprolactam and nylon 66 salt copolymer chip disclosed in the present invention, comprises the following steps: 1), the preparation of raw material: prepare caprolactam melt, the aqueous solution of nylon 66 salt and additive respectively; 2), make The raw material that step 1) makes enters mixer 1 and mixes, and mixer 1 can be static mixer or dynamic mixing chamber; 3), the material that will be mixed through step 2) enters pre-polymerization tower 2, caprolactam in water Accelerate ring opening under the action of nylon 66 salt and perform addition and partial polycondensation reaction respectively to obtain the melt of low molecular weight caprolactam and nylon 66 salt copolymer, and remove excess water in the pre-polymerization tower 2; 4 ), after the melt of the low-molecular-weight caprolactam and nylon 66 salt copolymer obtained in step 3) is sloughed off residual moisture through the film former 3, enters the pos...

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Abstract

The invention relates to a process for producing a caprolactam and nylon 66 salt copolymer slice. The process comprises the following steps of: 1) preparing raw materials, namely respectively preparing caprolactam melt, a nylon 66 salt aqueous solution and an additive; 2) mixing the raw materials prepared in the step 1) in a mixer; 3) reacting the raw materials mixed in the step 2) in a pre-polymerization tower; 4) reacting the materials treated in the step 3) in a post-polymerization tower for reaction; 5) slicing the materials prepared in the step 4); 6) extracting the slices prepared in the step 5); 7) drying the extracted slices in the step 6); and 8) cooling the slices dried in the step 7), thus obtaining the caprolactam and nylon 66 salt copolymer slice finished product. According to the technical scheme, the caprolactam and nylon 66 salt copolymer slice has the characteristics of outstanding tensile strength, anti-impact strength and anti-puncturing strength, high gas isolation performance, high heat resistance, high mist degree, high glossiness, low temperature performance, flexibility, high transparency, high printablility and the like.

Description

technical field [0001] The invention relates to a production process of caprolactam and nylon 66 salt copolymer chips. Background technique [0002] Nylon 6 slices are the base material for the production of nylon film and fishmesh, and are widely used in food packaging, pharmaceutical packaging, packaging of electronic industry materials, and fishmesh industry. However, due to the high melting point and glass transition temperature of nylon 6, The low temperature performance is poor, the film rupture rate is high when the film is drawn, and the softness is poor at low temperature, especially as a spinning fish mesh material, its transparency needs to be further improved. Contents of the invention [0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a nylon 6 that maintains its outstanding tensile strength, impact strength and puncture strength, good gas barrier properties, excellent heat resistance, and haze In additio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/36
Inventor 刘平郑永春李晓光柯年茂
Owner 浙江华建尼龙有限公司
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