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Low surface gloss styrene resin composition, low surface gloss sheet containing the same and preparing method thereof

A styrenic resin, gloss technology, applied in the field of styrenic resin composition, can solve the problems of weather resistance, impact strength reduction surface gloss, surface quality production cost and processability properties

Active Publication Date: 2012-07-04
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, all these conventional methods are limited in that they have at least one defect in satisfying the required quality and properties such as weather resistance, impact strength, reduced surface gloss, surface quality, production cost and workability

Method used

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  • Low surface gloss styrene resin composition, low surface gloss sheet containing the same and preparing method thereof
  • Low surface gloss styrene resin composition, low surface gloss sheet containing the same and preparing method thereof
  • Low surface gloss styrene resin composition, low surface gloss sheet containing the same and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4， comparative Embodiment 1

[0091] According to the rubber content, styrene resin was prepared by mixing SA927-DP resin (LG Chemical Co., Korea) containing acrylic rubber and SAN resin (SAN 90HR, LG Chemical Co., Korea) with an MI of 25 g / 10 min (220 °C) .

[0092] As the matting agent, sPS 130ZC (melting point: 270° C., Idemitsu Kosan Co., Ltd., Japan) was used.

[0093] The styrene resin and the matting agent were charged according to the composition shown in Table 3 into an extruder equipped with a 27 mm twin-screw (Leistriz, Germany), and 3 parts by weight of titanium dioxide (Cronos 2233) were added thereto. Granules were prepared under the processing conditions shown in Table 1 after mixing.

[0094] Sheets (thickness 0.2 mm) were prepared using the pellets by a TSE16TC twin-screw extruder (screw diameter: 16 mm, Thermo PRISM) and a T-die under the conditions shown in Table 2. The 75° gloss was measured with a TOYOSEIKI gloss meter (UD), and the results are shown in Table 3. In order to express ...

Embodiment 5～7

[0103] Experiments were performed in the same manner as described in Example 1 except that sPS-MAH TPSPS 8012PA (KOMETRA) containing 1.5% by weight of MAH and having a melting point of 269° C. was used as a matting agent according to the composition shown in Table 4.

[0104] Table 4

[0105] Example 5 Example 6 Example 7 Styrene resin (weight%) 97 95 90 Matting agent (weight%) 3 5 10 Gloss (75°) 45.8 25.9 3.6

[0106] As shown in Table 4, the styrenic resin compositions of Examples 5 to 7 containing sPS-MAH as a matting agent had lower gloss than the resin composition of Comparative Example 1 not containing a matting agent, indicating that the present invention The composition has excellent low surface gloss properties.

Embodiment 8～9

[0108] The experiment was carried out in the same manner as described in Example 1, except that 3 and 5 parts by weight of Blendex-MAT were used as the mat filler, respectively.

[0109] table 5

[0110] Example 8 Example 9 Styrene resin (weight%) 97 97 Matting agent (weight%) 3 3 Blendex-MAT (parts by weight) 3 5 Gloss (75°) 29.4 23.3

[0111] As shown in Table 5, the styrene resin compositions of Examples 8 to 9 containing a matting filler in addition to the matting agent sPS had lower gloss than the resin composition of Example 1, indicating that these compositions had better low surface gloss properties.

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Abstract

The present invention relates to a low surface gloss styrene resin composition. The composition of the present invention is composed of (A) 80-99.9 weight% of the basic resin comprising rubber-modified styrene resin and (B) 0.1-20 weight% of syndiotactic polystyrene, the matting agent. The composition also includes (C) hydrogenated styrene block copolymer comprising styrene block and butadiene rubber block as a compatibilizer by 0.1-20 weight% for the total weight of the low surface gloss styrene resin composed of (A) the basic resin and (B) the matting agent and additionally includes (D) a plasticizer by 0.1-30 weight%. The composition of the present invention has excellent weatherability and impact-resistance in addition to the low surface gloss properties, so that it can be applied in various products, particularly exterior products for structures such as sidings and window frames, etc.

Description

technical field [0001] The present invention relates to a styrene resin composition with low surface gloss, boards and composite products prepared using it. More specifically, the present invention relates to a low surface gloss styrenic resin composition, boards and composite articles prepared using the same, which are particularly Suitable for use on the exterior of buildings, such as wall panels, window frames, etc. Background technique [0002] Examples of styrene copolymers comprising a resin matrix and an elastomer or rubber are Acrylates-Styrene-Acrylonitrile (ASA), Olefin-Styrene-Acrylonitrile (OSA), Acrylonitrile-Ethylene Propylene Diene Rubber (EPDM) - Styrene (AES) and Acrylonitrile-Butadiene-Styrene (ABS). These resins have different properties according to their elastomeric components. Specifically, ASA resin has excellent impact strength, processability, and weather resistance, while ABS resin has excellent low-temperature impact resistance and processabilit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/04
CPCC08J5/18C08L25/04C08L25/06C08L25/12C08L2203/16C08L2205/02C08L2666/72
Inventor 赵胤敬孙先模李奉根安泰彬刘翰钟安成泰
Owner LG CHEM LTD
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