Method for producing resin composition containing active particles

一种树脂组合物、活性颗粒的技术，应用在安全并且廉价地制造使活性颗粒分散于热塑性树脂中的树脂组合物领域，能够解决吸氧剂活性降低等问题

Inactive Publication Date: 2014-06-25
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the oxygen absorber is dispersed in the resin, the oxygen absorber will still react with the oxygen in the environment, so it is necessary to add the oxygen absorber to the resin under inert gas or vacuum, or to add it to the resin. First temporarily reduce the activity of the oxygen absorber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0080] Hereinafter, the present invention will be described more specifically by way of examples, but the present invention is not limited to the following examples.

Synthetic example 1

[0082]

[0083] Al (aluminum) powder and Fe (iron) powder were mixed at a ratio of 50% by mass each, and melted in nitrogen to obtain an Al-Fe alloy. The obtained Al-Fe alloy was pulverized using a jaw crusher, a roll crusher, and a ball mill, and the pulverized product was classified using a mesh with an opening of 200 mesh (0.075 mm) to obtain an Al-Fe alloy having a mesh size of 200 or less. After 100 g of the obtained Al—Fe alloy powder was stirred and mixed in a 50° C. 25% by mass sodium hydroxide aqueous solution for 1 hour, the mixed solution was left to stand, and the supernatant was removed. The remaining precipitate was washed with distilled water until the pH became 10 or less to obtain Al—Fe porous metal powder (active particle). Therefore, the porous metal powder is obtained by reaction in an aqueous solution in order to avoid contact with oxygen.

[0084] The amount of distilled water was adjusted, and the porous metal powder obtained above was made into a slu...

Embodiment 1

[0089] Using a twin-screw co-rotating extruder (screw diameter 26mm, L / D value 64) with main feeder, exhaust port and devolatilization exhaust port, metal paste A and linear low density polyethylene (Japan Polyethylene Corporation., MFR 10.5 g / 10 minutes (measured in accordance with JIS K7210), hereinafter referred to as "LLDPE") melt-kneaded. First, use the main feeder to feed in LLDPE, and use the pump to feed in the metal slurry A from the exhaust port, so that the mass ratio of the two is LLDPE: metal slurry A = 60:40 while quantitatively feeding into the twin-screw co-rotating extruder. At this time, the pump was operated in air without nitrogen replacement, and the main feeder was operated at an oxygen concentration of 3% or less (measured using an oxygen detector manufactured by New Cosmos Electric Co., Ltd.) by nitrogen replacement. Before putting the metal slurry A into the twin-screw co-rotating extruder, the metal slurry A was left to stand in the tank of the pump ...

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PUM

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Abstract

To provide a method for producing a resin composition, in which active particles that are reactive with oxygen are dispersed in a thermoplastic resin, safely at low cost. A method for producing a resin composition that contains at least a thermoplastic resin and active particles, which are dispersed in the thermoplastic resin and are reactive with oxygen in the atmosphere,is provided. This method for producing a resin composition comprises: a step wherein the active particles are protected with a dispersion medium so that oxygen in the atmosphere is prevented from coming into contact with the active particles; a step wherein the dispersion medium is removed by melt-mixing the thermoplastic resin with the active materials that have been protected with the dispersion medium, so that the dispersion medium is substituted by the thermoplastic resin; and a step wherein the thermoplastic resin, in which the active particles are dispersed, is cooled and solidified.

Description

technical field [0001] The present invention relates to a method for producing a resin composition in which active particles capable of reacting with oxygen in the environment are dispersed in a thermoplastic resin, and more particularly to a method for safely and inexpensively producing a resin composition in which active particles are dispersed in a thermoplastic resin. Background technique [0002] As one of preservation techniques for foods, medicines, etc., there is a preservation technique using an oxygen absorbing agent (deoxidizer) that removes oxygen in the environment. As such a preservation technique, conventionally, an oxygen absorbing agent is placed inside the package together with the object to be sealed and implemented. A technique for oxidative deterioration of objects in the body. A package having oxygen-absorbing properties is produced by extruding a resin composition obtained by blending an oxygen-absorbing agent into a thermoplastic resin commonly used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/20C08K3/08C08L101/00
CPCC08L101/00C08J3/20C08J3/201C08K3/08C08J3/2056C08J2323/08C08J2323/12C08J2323/06C08K3/014C08J3/203C08L23/06C08L23/0815C08L23/12C08K2003/0856C08K2201/012
Inventor 增田章宏伊东芳树道场清智
Owner MITSUBISHI GAS CHEM CO INC
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