Thermoplastic resin composition having improved heat resistance and coloring properties

A technology of thermoplastic resin and composition, which is applied in the field of thermoplastic resin composition, can solve problems such as insufficient heat resistance and poor pigment colorability, and achieve uniform colorability, improvement of colorability and heat resistance, excellent mechanical properties and The effect of heat resistance

Active Publication Date: 2019-07-16
LOTTE ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this ASA resin composition exhibits poor pigment colorability and insufficient heat resistance

Method used

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  • Thermoplastic resin composition having improved heat resistance and coloring properties
  • Thermoplastic resin composition having improved heat resistance and coloring properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] As shown in Table 1, 2.5 parts by weight of (E) carbon black masterbatch, 0.4 parts by weight of internal lubricant (lubricant (S); HI-LUB B-50), and 1.3 parts by weight of climate stabilizer ( UV stabilizer; LIGHT STABILITYA, UV-327-1) with (A-1) acrylic graft copolymer containing 24wt%, 16wt% (A-2) acrylic graft copolymer, 25wt% (B-1 ) 100 parts by weight of the first aromatic vinyl-vinyl cyanide copolymer, (B-2) the second aromatic vinyl-vinyl cyanide copolymer of 25wt%, and (C-1) acrylic resin of 10wt% The base resin is mixed to prepare a thermoplastic resin.

[0118] The prepared thermoplastic resin was stirred using a typical mixer, followed by extrusion in a twin-screw extruder (L / D = 29, Φ = 45 mm), thereby preparing pellets. The prepared pellets were dried using a dehumidifying drier at 80°C for 2 hours, followed by injection molding using a 60 oz. injection machine at a cylinder temperature of 250°C and a mold temperature of 60°C to prepare 9 cm x 5cm x 0.2c...

Embodiment 2

[0120] As shown in Table 1, samples for property evaluation were prepared in the same manner as in Example 1, except that (C-2) acrylic resin having a glass transition temperature of 116° C. was used instead of (C-1) acrylic resin. The following properties of the prepared samples were evaluated, and the results are shown in Table 2.

Embodiment 3

[0122] As shown in Table 1, samples for property evaluation were prepared in the same manner as in Example 1 except that the (C-1) acrylic resin was used in an amount of 20 parts by weight. The following properties of the prepared samples were evaluated, and the results are shown in Table 2.

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Abstract

The present invention relates to a thermoplastic resin composition, and more particularly to an acrylic resin composition having improved coloring properties and heat resistance by comprising an acrylic graft copolymer, an aromatic vinyl-cyanovinyl-based copolymer, and an acrylic resin , and is therefore suitable for automotive exterior materials.

Description

technical field [0001] The present invention relates to thermoplastic resin compositions, and more particularly to acrylic thermoplastic resin compositions suitable for use in automotive exterior materials. Background technique [0002] Acrylonitrile-butadiene-styrene resin (hereinafter referred to as "ABS resin") is widely used in electrical / electronic products, automobile components, and resins for general goods. [0003] However, since the ABS resin contains a chemically unstable double bond in the rubber component of the resin, the rubber component may be aged by UV light. When placed outdoors, such ABS resins may suffer relatively severe discoloration and property deterioration over time due to poor weather resistance and light resistance, and thus are not suitable for outdoor use. In order to solve this problem, there have been proposed methods of subjecting molded articles produced using ABS resins to post-treatments such as coating and plating, or adding a large am...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/04C08L25/12C08L25/14C08L33/20
CPCC08L25/12C08L33/12C08L33/04C08L33/20C08L51/04C08L2205/025C08L2205/035C08F285/00C08K5/005C08L51/003C08L2207/53
Inventor 朴智恩金永孝朴康烈金慈润
Owner LOTTE ADVANCED MATERIALS CO LTD
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