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Thermoplastic resin composition and molded article

A resin composition and plasticity technology, which is applied in the field of thermoplastic resin compositions containing styrene-based copolymers and diurea-based compounds, can solve the problems of non-compliance with the industry, the phenomenon of yellowing cannot be effectively improved, etc. Effect

Inactive Publication Date: 2016-05-11
CHI MEI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the transparent styrene-based resin composition can make the molded products formed from it have good transparency, the yellowing phenomenon cannot be effectively improved, which does not meet the needs of the industry.

Method used

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  • Thermoplastic resin composition and molded article
  • Thermoplastic resin composition and molded article
  • Thermoplastic resin composition and molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] [Example 1] Thermoplastic resin composition

[0059] The styrene monomer of 68% by weight, the acrylonitrile monomer of 32% by weight, 8 parts by weight of ethylbenzene (based on the total amount of styrene monomer and acrylonitrile monomer as 100 parts by weight) and 0.04 parts by weight of HD-36D [the diurea compound shown in the formula (I), based on the total amount of styrene monomer and acrylonitrile monomer and being 100 parts by weight] feed solution formed, pumped at 35 kg / hour The flow rate is continuously supplied to the complete mixing type polymerization reactor with a capacity of 40 liters for reaction. In addition, 0.15 parts by weight of tertiary dodecyl mercaptan (based on styrene monomer and acrylonitrile monomer total amount and 100 parts by weight) into the reactor. The reaction temperature of the above reactor is 145°C, the stirring speed is 150rpm, and the reaction is carried out for 1.5 hours. Then, it is transported to a devolatilization device ...

Embodiment 2 to 4 and comparative example 1 to 4

[0061] Examples 2 to 4 and Comparative Examples 1 to 4 prepared the thermoplastic resin composition in the same steps as in Example 1, the difference being that the types and usage amounts of each raw material were changed, see Table 1, the analysis and The physical property evaluation results are shown in Table 1.

[0062] 【Test items】

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Abstract

The present invention relates to a thermoplastic resin composition and a finished product with the same. The thermoplastic resin composition comprises a styrenic Polymer and chlorophenyl urea illustrated in formula (I). The styrenic Polymer includes a carbonyl monomer unit and an acrylic monomer unit. Formula (img file='DDA00003199700500011. TIF'wi='890'he='221' / ) belongs to formula (I) wherein R1, R2, R3 and R4 can both be the same or different and represent respectively the aliphatic groups of C16 and C20; n represents the integer from 5 to 7. A finished product with such a composition is provided with a high transparency and during the process of its making, it does not get influenced or restricted by high temperature to become yellow in color. Therefore, a finished product with the composition is good-looking in color.

Description

technical field [0001] The invention relates to a thermoplastic resin composition, in particular to a thermoplastic resin composition comprising a styrene copolymer and a diurea compound. Background technique [0002] Thermoplastic styrene-based polymers are widely used in electronics, electrical appliances and auto parts because of their good mechanical properties. However, the thermoplastic styrenic polymer is easily affected by the high-temperature process during the molding process, resulting in yellowing problems, and then the molded products formed from it have problems of poor hue and low transparency. [0003] TWI297406 discloses a transparent styrene-based resin composition that can improve the yellowing phenomenon and improve the transparency of molded products. The transparent styrenic resin composition comprises 100 parts by weight of a styrenic copolymer and 0.002 to 1.0 parts by weight of a bisurea compound represented by formula (a). [0004] Formula (a) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/12C08K5/21
Inventor 陈文科许瑞熙
Owner CHI MEI CORP
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