Nanocomposite composition having barrier property

A technology of nanocomposite materials and compositions, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc.

Inactive Publication Date: 2007-09-12
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of these resins is limited to packaging or contain...

Method used

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  • Nanocomposite composition having barrier property
  • Nanocomposite composition having barrier property

Examples

Experimental program
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Effect test

Embodiment

[0056] The materials used in the following examples are as follows:

[0057] EVOH: E105B (Japan Kuraray)

[0058] Nylon 6: EN 300 (Kowa Chemical Co., Ltd.)

[0059] Styrene-based resin: ABS RS-800 (LG Chem)

[0060] Compatibilizer: the modified ABS resin prepared in Preparation Example 1

[0061] Clay: Closite 30B (SCP)

[0062] Heat stabilizer: IR 1098 (Matsubara Industrial Co., Ltd.)

preparation Embodiment 1

[0064] (Preparation of Modified ABS Resin)

[0065] Using butadiene latex as a seed under a nitrogen atmosphere, 100 parts by weight of a monomer mixture comprising acrylonitrile, styrene, and methyl methacrylate and 105 parts by weight of water were added to the reactor in batches, and Heat to 70°C. In this mixture, add respectively the first monomer phase containing 0.6 parts by weight of tert-dodecyl mercaptan, 0.5 parts by weight of sodium stearate, and 0.5 parts by weight of potassium persulfate and 50 parts by weight of water containing A solution of 0.1 parts by weight of potassium persulfate was added, and the first polymerization reaction was carried out for 3 hours. Then, the second monomer phase containing 0.6 parts by weight of tert-dodecyl mercaptan and the solution containing 0.1 parts by weight of potassium persulfate in 50 parts by weight of water were added respectively to the reaction mixture, and the second polymerization reaction was carried out. 3 hours....

preparation Embodiment 2

[0067] (Preparation of EVOH / intercalated clay nanocomposites)

[0068] 97wt% ethylene-vinyl alcohol copolymer (EVOH; E-105B (ethylene content: 44mol%); Japan Kuraray; melt index: 5.5g / 10min; density: 1.14g / cm 3 ) into the main hopper of a twin-screw extruder (SM Platek co-rotating twin-screw extruder; 40). Then, 3 wt % of organomontmorillonite (Southern Intercalated Clay Products, U.S.; Closite 2OA) as intercalation clay and 0.1 parts by weight of EVOH copolymer and organomontmorillonite as heat stabilizer based on a total of 100 parts by weight The IR 1098 was added separately to the side feeder of the twin-screw extruder to prepare EVOH / intercalated clay nanocomposites in the form of particles. The extrusion temperature condition was 180-190-200-200-200-200-200° C., the screw rotated at 300 rpm, and the discharge condition was 30 kg / hr.

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Abstract

A nanocomposite composition having a barrier property is provided. The compositon is prepared by dry-blending a styrene-based resin, a resin having a barrier property/intercalated clay nanocomposite, and a compatibilizer. The compositon has superior mechanical strength and moldability, and superior oxygen, organic solvent, and moisture barrier properties, and thus can be used to manufacture various articles having a barrier property.

Description

technical field [0001] The present invention relates to a composition formed by dry mixing a styrene-based resin, a nanocomposite material of an intercalated clay and a resin having barrier properties, and a compatibilizer. Background technique [0002] Styrene-based resins have excellent moldability and dimensional stability. In particular, ABS resins are used in many fields due to good balance of physical properties such as gloss, electrical properties, and processability of styrene and heat resistance, rigidity, oil resistance, durability, and impact resistance of butadiene. However, the use of these resins is limited to packaging or containers for food which require excellent chemical and oxygen barrier properties. Therefore, these resins are used in multilayer form with other resins by co-extrusion, lamination or coating. [0003] Ethylene-vinyl alcohol (EVOH) copolymers and polyamides are used in multilayer plastic products due to their high transparency and excellen...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08J5/10C08L55/00
CPCB82Y30/00C08K3/346C08K9/04C08L25/04C08L29/02C08L51/04C08L55/02C08L77/00C08L2201/14C08L2205/03
Inventor 金明鎬金民基吴咏卓金世贤申在容梁荣哲李炯晚
Owner LG CHEM LTD
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