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Polyamide resin composition and method for producing same

A polyamide resin, manufacturing method technology, applied in chemical instruments and methods, synthetic resin layered products, types of packaging items, etc., can solve the problem of damaged color tone or strength of molded bodies, unpleasant odor, inability to use metal detectors, etc. problem, to achieve the effect of improving the appearance design, excellent oxygen absorption performance, and excellent oxygen absorption performance

Inactive Publication Date: 2015-04-15
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the oxygen-absorbing multilayer body and the oxygen-absorbing film in which an oxygen-absorbing agent such as iron powder is dispersed in the resin cannot be used in the packaging field requiring transparency because the oxygen-absorbing agent such as iron powder makes the resin color and opaque. usage constraints
In addition, since iron powder is used, there is a limitation in application that metal detectors used for inspection of packaging containers cannot be used.
In addition, the resin compounded with an ethylenically unsaturated compound such as polybutadiene and a transition metal catalyst such as cobalt has a problem that the ethylenically unsaturated compound such as polybutadiene is oxidized and decomposed due to an oxygen absorption reaction, and the low molecular weight Unpleasant odor due to compounds, or loss of hue or strength of shaped bodies

Method used

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  • Polyamide resin composition and method for producing same
  • Polyamide resin composition and method for producing same
  • Polyamide resin composition and method for producing same

Examples

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Effect test

Embodiment

[0255] Hereinafter, although an Example demonstrates this invention in more detail, this invention is not limited to these Examples.

[0256] It should be noted that, in the following examples, regarding the units constituting the copolymer,

[0257] The units derived from m-xylylenediamine are referred to as "MXDA",

[0258] The unit derived from adipic acid is referred to as "AA",

[0259] The unit derived from isophthalic acid is referred to as "IPA",

[0260] The unit derived from L-alanine is called "L-Ala".

[0261] In addition, poly-m-xylylene adipamide is referred to as "N-MXD6".

[0262] The α-amino acid content, relative viscosity, terminal amino group concentration, glass transition temperature, and melting point of the polyamide resins obtained in Production Examples were measured by the following methods. In addition, a film was produced from the polyamide resin obtained in the production example, and the oxygen absorption amount thereof was measured by the fo...

manufacture example 1

[0275] Production example 1 (production of polyamide resin 1)

[0276]In a pressure-resistant reaction vessel with an internal volume of 50L equipped with a mixer, a partial condenser, a total condenser, a pressure regulator, a thermometer, a drip tank and a pump, an aspirator, a nitrogen inlet pipe, a bottom discharge valve, and a strand mold , Add 13000g (88.96mol) of adipic acid (manufactured by Asahi Kasei Chemical Co., Ltd.), 880.56g (9.88mol) of L-alanine (Sinogel amino acid co.ltd), 11.7g (0.11 mol), 6.06 g (0.074 mol) of sodium acetate, and after sufficient nitrogen substitution, the inside of the reaction vessel was sealed, and the temperature was raised to 170° C. under stirring while keeping the inside of the vessel at 0.4 MPa. After reaching 170° C., 12082.2 g (88.71 mol) of m-xylylenediamine (manufactured by Mitsubishi Gas Chemical Co., Ltd.) stored in a dropping tank was started to be added dropwise to the molten raw material in the reaction container, and the co...

manufacture example 2

[0277] Production example 2 (production of polyamide resin 2)

[0278] Except that the feeding composition ratio of each monomer is set as m-xylylenediamine: adipic acid: L-alanine=44.4:44.5:11.1 (mol%), operate in the same manner as in Manufacturing Example 1, thereby obtaining MXDA / AA / L-Ala copolymer (polyamide resin 2).

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Abstract

A polyamide resin composition which contains: (A) a polyamide resin that contains 25-50% by mole of diamine units that contain 50% by mole or more of a specific diamine unit, 25-50% by mole of dicarboxylic acid units that contain 50% by mole or more of a specific dicarboxylic acid unit, and 0.1-50% by mole of a specific constituent unit; and (C) a metal compound that contains one or more kinds of metal atoms selected from among iron, manganese, copper and zinc, or (D) a coloring agent that contains one or more kinds of metal atoms selected from among iron, manganese, copper and zinc.

Description

technical field [0001] The present invention relates to a polyamide resin composition and a method for producing the same. Specifically, it relates to a polyamide resin composition exhibiting oxygen-absorbing performance and a method for producing the same. Background technique [0002] Polyamide obtained by the polycondensation reaction of xylylenediamine and aliphatic dicarboxylic acid, such as polyamide obtained by m-xylylenediamine and adipic acid (hereinafter referred to as nylon MXD6), exhibits high strength and high elastic modulus , and low permeability to gaseous substances such as oxygen, carbon dioxide, odor and flavor (flavor), so it is widely used as a gas barrier material in the field of packaging materials. Compared with other gas barrier resins, nylon MXD6 has better thermal stability when melted, so it can be co-extruded with thermoplastic resins such as polyethylene terephthalate (hereinafter referred to as PET), nylon 6, and polypropylene. , Co-injection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08G69/36C08J3/22C08K3/00C08K5/098
CPCC08L77/04C08J2477/06C08J2377/06C08J3/226C08L77/06C08G69/36C08J2377/04C08K5/098C08K5/3467C08J2377/00C08L2201/08C08L77/00B32B27/34B32B27/08B32B27/18B32B27/20B32B2250/24B32B2264/104B32B2264/105B32B2270/00B32B2307/50B32B2307/51B32B2307/7242B32B2307/74B32B2439/00B32B2553/00C08K3/10C08K5/101
Inventor 小田尚史津中伸幸宫部高德
Owner MITSUBISHI GAS CHEM CO INC
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