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Oxygen-absorbing resin composition

一种树脂组合物、树脂层的技术，应用在合成树脂层状产品、挠性覆盖物、包装物品类型等方向，能够解决强度降低、包装容器强度降低等问题，达到高成形加工性和透明性、保存性优异、高吸氧性能的效果

Active Publication Date: 2012-11-28
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the resin composition that contains a transition metal catalyst to oxidize polyamide resin and the like to exhibit an oxygen absorbing function is oxidized due to the oxidation of the xylylene-containing polyamide resin, so the strength decreases due to oxidative degradation of the resin, and there are packaging containers. problems such as reduced strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A

[0200] Using m-xylylenediamine: sebacic acid: adipic acid at a molar ratio of 0.992:0.4:0.6, a polyamide resin was synthesized by melt polymerization and solid state polymerization under the aforementioned synthesis conditions (hereinafter, the polyamide The resin is described as polyamide 1A). In addition, the dropping time was set to 2 hours, the reaction time of melt polymerization was set to 1 hour, the pressure in the device during solid phase polymerization was set to 1 torr or less, the polymerization temperature was set to 160° C., and the polymerization time was set to 4 hours. Hour. Polyamide 1A has a Tg of 73°C, a melting point of 184°C, a half-crystallization time of over 2000 seconds, a terminal amino group concentration of 17.5 μeq / g, a terminal carboxyl group concentration of 91.6 μeq / g, a number average molecular weight of 23,500, and an MFR of 240°C It was 11.0 g / 10 minutes. In addition, the obtained polyamide 1A monomer was used to make an unstretched film,...

Embodiment 2A

[0203] A film was produced in the same manner as in Example 1A except that the weight ratio at the time of melt kneading was set to cobalt stearate-containing polyamide 1A:LLDPE=55:45, and the film was subjected to measurement of oxygen absorption and elongation. Rate measurement and appearance observation. Their results are shown in Table 2A.

Embodiment 3A

[0205] A film was produced in the same manner as in Example 1A except that the weight ratio during melt kneading was set to cobalt stearate-containing polyamide 1A:LLDPE = 25:75, and the film was subjected to measurement of oxygen absorption, elongation Rate measurement and appearance observation. Their results are shown in Table 2A.

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Abstract

Provided is a resin composition having excellent oxygen absorption performance, high resin strength and good resin processability. Specifically disclosed is an oxygen-absorbing resin composition comprising a polyolefin resin, a transition metal catalyst and a polyamide resin that is obtained by polycondensing an aromatic diamine with a dicarboxylic acid, characterized in that the terminal amino group concentration of said polyamide resin is not more than 30 [mu]eq / g and the sum of the contents of said transition metal catalyst and said polyamide resin is 15-60 wt% relative to the total amount of the oxygen-absorbing resin composition.

Description

technical field [0001] The present invention relates to an oxygen-absorbing resin composition that exhibits excellent oxygen-absorbing performance, does not decrease in strength due to oxidative degradation of the resin, and does not generate odor, a method for producing the oxygen-absorbing resin composition, and an oxygen-absorbing multilayer body An oxygen-absorbing multilayer container formed by thermoforming the multilayer body. Background technique [0002] Conventionally, containers such as metal cans, glass bottles, and various plastic packages are known as packaging containers, and quality deterioration due to oxygen in the packaging containers has become a problem. Therefore, in recent years, as one of the deoxidizing packaging technologies, the development of a packaging container made of a multilayer material with an oxygen-absorbing layer comprising an oxygen-absorbing resin composition containing an iron-based deoxidizer mixed with a thermoplastic resin has bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00B65D65/40C08K3/00C08L77/06B65D81/26B32B1/00
CPCC08L77/06C08K5/098C08K2201/012B32B27/34B32B27/08B32B27/18B32B27/32B32B27/36B32B27/10B65D81/266B32B2264/102B32B2264/104B32B2307/412B32B2307/7242B32B2439/00C08L23/02Y10T428/1303Y10T428/1379Y10T428/31725Y10T428/31938C08L2666/20C08L2666/06B65D65/40C08K3/00C08L23/00
Inventor 加柴隆史冈田聪史岩本慎平增田章宏道场清智
Owner MITSUBISHI GAS CHEM CO INC
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