Resin composition, production method for resin composition, and molded body using resin composition

A technology of resin composition and manufacturing method, which is applied to other household appliances, chemical instruments and methods, synthetic resin layered products, etc., can solve the problems of insufficient productivity and poor appearance of molded products, and achieve simple manufacturing, excellent appearance, The effect of increasing the ejection volume

Active Publication Date: 2019-12-20
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when producing the packaging bag for fruits and vegetables described in Patent Document 4, the productivity at the time of melt molding is insufficient, and the appearance of the molded product obtained by melt molding is also poor.

Method used

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  • Resin composition, production method for resin composition, and molded body using resin composition
  • Resin composition, production method for resin composition, and molded body using resin composition
  • Resin composition, production method for resin composition, and molded body using resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] (1) Production of resin composition pellets

[0118] Prepare an ethylene unit content of 32 mol%, saponification degree of 99.98 mol%, MFR of 3.8g / 10min (at a temperature of 210°C, a load of 2160g), a water content of 0.2% by mass, and a metal salt containing 200ppm of acetic acid in terms of sodium Sodium EVOH1. In addition, as a nonionic surfactant, polyoxyethylene (7) stearyl ether (the number in parentheses in the compound name of the nonionic surfactant indicates the degree of condensation of polyoxyethylene units. The same applies hereinafter) was prepared. Water dispersion (content of nonionic surfactant: 10.0g / L). 100 parts by mass of EVOH1 and 1 part by mass of the above aqueous dispersion were blended. The resulting mixture was melt-kneaded under the following conditions, and then pelletized and further dried to obtain resin composition pellets.

[0119] Device: 25mmφ twin-screw extruder ("LABO PLASTOMILL 4C150" manufactured by Toyo Seiki Seisakusho)

[01...

Embodiment 2~33 and comparative example 1~6

[0160] Except for changing the type of EVOH, the type and content of the nonionic surfactant as shown in Table 1 and Table 2, pellets, single-layer films, and multilayer structures of the resin composition were produced in the same manner as in Example 1. , to analyze and evaluate them. The results are shown in Table 2.

[0161]

[0162]

[0163]1) "UNILUB MS-70K" manufactured by NOF Corporation, 2) "NONION HT-510" manufactured by NOF Corporation, 3) "NOIGEN EA-157" manufactured by Daiichi Kogyo Manufacturing Co., Ltd., 4) manufactured by NOF Corporation "NOIGEN S-210", 5) NOIGEN L-703 manufactured by NOF Corporation, 6) "NONION L-4" manufactured by NOF Corporation, 7) "NONION S-4" manufactured by NOF Corporation, 8 ) "NONION L-2" manufactured by NOF Corporation, 9) "NONION DO-6" manufactured by NOF Corporation, 10) "SOLGEN TW-60" manufactured by Daiichi Kogyo Manufacturing Co., Ltd., 11) manufactured by Daiichi Kogyo Manufacturing Co., Ltd. "SOLGEN 110".

Embodiment 34

[0165] An aqueous dispersion of EVOH1 and a nonionic surfactant was prepared in the same manner as in Example 1. 100 parts by mass of EVOH1, 1 part by mass of the above aqueous dispersion and 0.5 parts by mass of N,N'-hexane-1,6-diyl bis[3-(3,5-di-tert-butyl-4 -Hydroxyphenyl) propionamide] for blending. Resin composition pellets, a single-layer film, and a multilayer structure were produced in the same manner as in Example 1 except that the mixture obtained in this way was used, and then their analysis and evaluation were performed. The results are shown in Table 3.

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Abstract

A resin composition that contains an ethylene-vinyl alcohol copolymer and a nonionic surfactant. The ethylene-vinyl alcohol copolymer is the main component of the resin composition, has an ethylene-unit content of 15-60 mol%, and is at least 90 mol% saponified. The resin composition contains 3-400 ppm of the nonionic surfactant. The resin composition is produced by melting and integrating a mixture that includes the ethylene-vinyl alcohol copolymer, the nonionic surfactant, and water. This resin composition increases discharge during melt processing and makes it possible to achieve molded bodies that have an excellent appearance.

Description

technical field [0001] The present invention relates to a resin composition containing an ethylene-vinyl alcohol copolymer, a method for producing the same, and a molded article using the same. Background technique [0002] Ethylene-vinyl alcohol copolymer (hereinafter sometimes abbreviated as "EVOH") is a polymer material with excellent barrier properties such as oxygen gas, transparency, fragrance retention, oil resistance, antistatic property, and mechanical strength. Therefore, EVOH is widely used as a material for molded articles such as containers. A molded article using EVOH is usually produced by a melt molding method. Therefore, EVOH is required to improve productivity during melt molding, to have excellent appearance after melt molding (no coloration such as yellowing occurs), and the like. [0003] Patent Document 1 proposes a resin composition containing EVOH, hydrotalcite, and a metal salt of a higher fatty acid. It is said that according to this resin compos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04B32B27/28C08K5/06C08K5/103C08K5/17C08K5/20
CPCC08K5/06C08K5/103C08K5/17C08K5/20C08L29/04C08L2205/02C08L2205/03C08J5/18C08J2329/04C08J2471/02B32B2307/7246B32B2307/7244B32B27/365B32B27/302B32B25/14B32B2439/70B32B2451/00B32B2410/00B32B27/40B32B2264/102B32B2250/24B32B2270/00B32B2307/7265B32B2262/101B32B2439/80B32B27/304B32B27/20B32B27/08B32B2272/00B32B2439/60B32B2605/08B32B27/36B32B2597/00B32B2250/02B32B2439/46B32B2250/05B32B25/08B32B27/34B32B27/22B32B27/306B32B7/12B32B27/308B32B27/32B32B2607/02B32B2264/10B32B2250/03B32B2605/12B32B2605/18C08L71/02C08K5/098C08K3/105
Inventor 片平英里子下浩幸中野贤治
Owner KURARAY CO LTD
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