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Cadaverine salt, aqueous cadaverine salt solution, polyamide resin, molded article and process for producing cadaverine salt and aqueous cadaverine salt solution

A technology of polyamide resin and manufacturing method, applied in organic chemistry, fermentation, recombinant DNA technology, etc., can solve problems such as deterioration, appearance deterioration, tensile cracked surface appearance, etc., and achieve the effect of preventing fish eyes

Active Publication Date: 2009-11-11
MITSUBISHI RAYON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to impart strength and gas barrier properties, polyamide resin films are often used after stretching such as biaxial stretching. It reduces the productivity, but also deteriorates the appearance of the film and significantly damages the commodity value, so it is required to reduce this defect as much as possible.
[0005] In addition, polyamide resin exhibits excellent performance and is widely used in the fields of fibers and monofilaments. However, in these applications, like the above-mentioned films, fish eyes will cause tensile cracks during molding and deterioration of surface appearance. Therefore, it is also required to reduce the fisheye

Method used

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  • Cadaverine salt, aqueous cadaverine salt solution, polyamide resin, molded article and process for producing cadaverine salt and aqueous cadaverine salt solution
  • Cadaverine salt, aqueous cadaverine salt solution, polyamide resin, molded article and process for producing cadaverine salt and aqueous cadaverine salt solution
  • Cadaverine salt, aqueous cadaverine salt solution, polyamide resin, molded article and process for producing cadaverine salt and aqueous cadaverine salt solution

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Experimental program
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Embodiment

[0410] Examples are given below to illustrate the present invention more specifically, but the present invention is not limited to these descriptions.

no. 1 Embodiment

[0412] First, an embodiment of the first point will be described.

[0413] [Amino acid analysis]

[0414] Amino acids such as lysine and arginine were analyzed using Hitachi Amino Acid Analyzer L-8900. First, the sample solution was subjected to ultrafiltration (MWCO 10,000), and the filtrate was used as an analysis sample. The analysis conditions are biological amino acid separation conditions, and the analysis method is ninhydrin chromogenic method (570nm, 440nm). Dilutions of Wako Amino Acid Mixed Solution ANII and Type B were used as standards, and the sample injection volume was 10 μL. As a quantitative calculation, for Pro (i.e., proline), the amino acid content is calculated from the peak area of ​​440nm by the external standard one-point method (one-point external standard method), and for other amino acids, the amino acid content is calculated by the external standard one-point method from the peak area of ​​570nm content.

[0415] [Relative viscosity (ηr)]

[04...

Embodiment 1-1

[0508]

[0509] In No. 1 crystal of cadaverine adipate prepared by the purification and separation of cadaverine adipate (1) above, the concentration of cadaverine adipate before crystallization (unit: mass %), crystallization The rate (unit: %) and the number of crystallization times (unit: times) are listed in Table 1.

[0510]

[0511] Amino acid analysis was carried out on crystal No. 1 of cadaverine adipate prepared by the purification and isolation of cadaverine adipate (1) above. The results are listed in Table 1.

[0512]

[0513] After adding 25 kg of water to 25 kg of No. 1 crystal of cadaverine adipate prepared by the purification and separation (1) of the above-mentioned cadaverine adipate, add 1.25 g of phosphorous acid, and dissolve the mixture completely under a nitrogen atmosphere. A raw material aqueous solution was obtained.

[0514] The above-mentioned raw material aqueous solution was sent to the autoclave previously replaced with nitrogen by a plun...

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Abstract

To improve problems of the content of trifunctional and higher organic compounds, fish-eyes of a film and its flowability in injection molding occurring in the existing techniques, the total content of trifunctional and higher organic compounds of cadaverine salts is regulated to 90 ppm or less. To improve the fish-eyes (F / E) of a polyamide resin film and its flowability in injection molding and the amount of high-molecule impurities contained in the polyamide resin, an aqueous cadaverine salt solution, from which high-molecule impurities having a molecular weight of 12,000 or more have been removed, is prepared. To easily and economically produce a cadaverine solution by which defects in the surface appearance such as fish-eyes can be prevented in the case of using it as a starting material of a polyamide resin film or the like, moreover, the amount of microbial cells employed in the reaction is regulated within a definite range.

Description

technical field [0001] The first aspect of the present invention relates to cadaverine salts and the like, and more specifically, to cadaverine salts and the like having a small content of trifunctional or higher organic substances. Furthermore, the second gist of the present invention relates to a method for producing an aqueous cadaverine saline solution, and more specifically, a method for producing an aqueous cadaverine saline solution from which polymer impurities have been removed, and the like. Moreover, the 3rd aspect of this invention relates to the solution of cadaverine and / or cadaverine salt, and the manufacturing method of cadaverine and / or cadaverine salt. In addition, in the following description, cadaverine and / or cadaverine salt may be collectively referred to as "cadaverines". Background technique [0002] Conventionally, petrochemical raw materials such as naphtha have been mainly used as raw materials for plastics. However, when plastics are discarded, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/09C07C55/14C07C209/84C08G69/26C12N15/09C12P13/02
Inventor 宫奥康平山岸兼治人见达也山本正规
Owner MITSUBISHI RAYON CO LTD
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