Thermoplastic resin composition

A thermoplastic resin and composition technology, applied in the field of thermoplastic resin composition, can solve the problems of poor impact resistance and achieve the effects of excellent fluidity, rigidity maintenance, and excellent surface appearance

Inactive Publication Date: 2009-10-07
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the purpose of this invention is to obtain a resin composition with excellent transparency, the amount of aromatic vinyl monomers contained in the rubber-reinforced styrenic resin is controlled to a very small amount, and the resin composition of this invention is stable at room temperature. , Poor impact resistance at low temperature

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment

[0125] Hereinafter, the configuration and effects of the present invention will be described in more detail based on examples. However, the present invention is not limited to the following Examples. Before describing each example, methods for measuring various physical properties used in the examples will be described.

[0126] Izod impact strength

[0127] Notched Izod impact strength was determined according to ASTM D256 using injection molded articles having a thickness of 1 / 8 inch. The impact strength was measured at normal temperature (23°C) and low temperature (-30°C).

[0128] Flexural modulus

[0129] Determined according to ASTM D-790.

[0130] heat resistance

[0131] According to ASTM D-648, using injection molded products with a thickness of 1 / 4 inch, at 4.6kgf / cm 2The heat deflection temperature (HDT) was measured under the load.

[0132] fluidity

[0133] The melt flow rate was measured under the condition of a load of 10 kgf according to JIS K7210B meth...

reference example 1

[0161] (Reference example 1) Preparation of graft (co)polymer (A-1) (a-1)

[0162] The following substances were charged into a polymerization container, and the temperature was raised to 65° C. while stirring. Polymerization was started when the internal temperature reached 65°C, and 40 parts by weight of a mixture of 71 parts by weight of styrene, 29 parts by weight of acrylonitrile and 0.3 parts by weight of tert-dodecyl mercaptan was continuously added dropwise for 5 hours. .

[0163] Polybutadiene latex (weight average particle diameter: 0.2 μm): 60 parts by weight (solid content calibration)

[0164] Potassium oleate: 0.5 parts by weight

[0165] Glucose: 0.5 parts by weight

[0166] Sodium pyrophosphate: 0.5 parts by weight

[0167] Ferrous sulfate: 0.005 parts by weight

[0168] Deionized water: 120 parts by weight

[0169] Simultaneously, an aqueous solution comprising 0.25 parts by weight of cumene hydroperoxide, 2.5 parts by weight of potassium oleate, and 25 pa...

reference example 2

[0172] (Reference example 2) Preparation of graft (co)polymer (A-1) (a-2)

[0173] The following substances were charged into a polymerization container, and the temperature was raised to 65° C. while stirring. Polymerization was started when the internal temperature reached 65°C, and 58 parts by weight of a mixture of 71 parts by weight of styrene, 29 parts by weight of acrylonitrile and 0.3 parts by weight of tertiary dodecyl mercaptan were continuously added dropwise for 5 hours. .

[0174] Polybutadiene latex (weight average particle diameter: 0.2 μm): 42 parts by weight (solid content calibration)

[0175] Potassium oleate: 0.5 parts by weight

[0176] Glucose: 0.5 parts by weight

[0177] Sodium pyrophosphate: 0.5 parts by weight

[0178] Ferrous sulfate: 0.005 parts by weight

[0179] Deionized water: 120 parts by weight

[0180] Simultaneously, an aqueous solution comprising 0.25 parts by weight of cumene hydroperoxide, 2.5 parts by weight of potassium oleate, an...

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Abstract

The present invention is a thermoplastic resin composition obtained by adding a specific modified ethylene-based copolymer having a specific intrinsic viscosity to a composition composed of a styrene-based resin and a polyamide resin. The present invention provides a thermoplastic resin composition which maintains good rigidity, heat resistance, chemical resistance, and impact resistance at room temperature and low temperature, has excellent fluidity, and has a more excellent surface than conventional ones Exterior.

Description

technical field [0001] The present invention relates to a thermoplastic resin composition formed by adding specific modified vinyl copolymer to styrene resin and polyamide resin. Background technique [0002] Styrene-based resins are widely used as general-purpose thermoplastic resins because of their high rigidity, good appearance, good dimensional stability, and low water absorption. However, the chemical resistance, abrasion resistance, and heat resistance of styrene-based resins are insufficient, and their use under severe conditions is limited. In addition, crystalline thermoplastic resin compositions, especially polyamide resins, are widely used as engineering plastics because of their excellent chemical resistance, abrasion resistance, and heat resistance, but they have high water absorption, rigidity, and dimensional stability Sexual inadequacy. [0003] Therefore, researches have been made on resin compositions that have the respective advantages of styrene-based ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/04C08L25/08C08L77/00C08L101/00
Inventor 森下卓也玉井晃义田中明子斋藤真希子
Owner TORAY IND INC
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