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Thermoplastic resin composition, molded article, and vehicle part

A technology of thermoplastic resin and composition, which is applied in the field of thermoplastic resin composition, can solve the problems of low presence, etc., and achieve the effects of inhibiting coloring, excellent weather resistance, appearance and weather resistance

Active Publication Date: 2022-02-25
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, in terms of design, vehicle parts are required to be transparent and low in presence

Method used

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  • Thermoplastic resin composition, molded article, and vehicle part
  • Thermoplastic resin composition, molded article, and vehicle part
  • Thermoplastic resin composition, molded article, and vehicle part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0234] Hereafter, although an Example demonstrates this invention concretely, this invention is not limited to these Examples.

[0235]

[0236] Evaluations in Examples and Comparative Examples were implemented by the following methods.

[0237]

[0238] (1) Production of molded body (A)

[0239] Using an injection molding machine (model name: EC20PNII, manufactured by Toshiba Machine Co., Ltd.), the thermoplastic resins obtained in Examples and Comparative Examples were combined under the conditions of a molding temperature of 250°C, a mold temperature of 76°C, and a molding time of 360 seconds. The product was injection-molded to obtain a molded product (A) (50 mm in length, 50 mm in width, and 3 mm in thickness).

[0240] (2) Production of molded body (B)

[0241] Using an injection molding machine (model name: PS60E, manufactured by Nissei Plastics Co., Ltd.), the thermoplastic resins obtained in Examples and Comparative Examples were combined under conditions of a m...

manufacture example 1

[0342]After adding 900 parts by mass of deionized water, 60 parts by mass of 2-sulfoethyl sodium methacrylate, 10 parts by mass of potassium methacrylate and 12 parts by mass of MMA into a reaction vessel with a reflux cooler replaced by nitrogen inside, While stirring, the temperature was raised so that the liquid temperature in the reaction container became 50°C. Then, 0.08 parts by mass of the polymerization initiator (1) was added, the temperature was raised while stirring so that the liquid temperature in the reaction vessel reached 60° C., and MMA was continuously added dropwise at a rate of 0.24 parts by mass / min over 75 minutes using a titration pump. Then, the polymerization was carried out by further holding for 6 hours to obtain a dispersant (solid content: 10% by mass).

manufacture example 2

[0344] After adding 2000 parts by mass of deionized water and 4.2 parts by mass of sodium sulfate to a reaction vessel with a reflux cooler equipped with a nitrogen gas introduction pipe, it was stirred at a stirring rate of 320 rpm for 15 minutes. Then, a mixed solution of 1351.6 parts by mass of MMA, 36.3 parts by mass of MAA, 12.1 parts by mass of MA, 2.8 parts by mass of polymerization initiator (2) and 4.2 parts by mass of chain transfer agent (1) was added to the reaction vessel and stirred for 5 minutes. Next, after adding 6.72 parts by mass of the dispersant (10% by mass of solid content) produced in Production Example 1 to the reaction container, it was stirred to disperse the monomer composition in the reaction container in water. Then, the inside of the reaction container was replaced with nitrogen.

[0345] Next, after raising the temperature so that the liquid temperature in the reaction container reached 75° C., the liquid temperature in the reaction container wa...

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Abstract

The present invention provides a thermoplastic resin composition which is excellent in heat resistance, transparency, appearance after molding, and weather resistance, and which suppresses coloring during molding. The thermoplastic resin composition of the present invention is a thermoplastic resin composition comprising a copolymer (P1) and an antioxidant (O) represented by the following general formula (1), with respect to the total mass of the thermoplastic resin composition, the The thermoplastic resin composition contains 80% by mass or more of the copolymer (P1), and the copolymer (P1) contains 80 mol% or more of repeating units (A) derived from methyl (meth)acrylate (a), 2 mol% to 7 mol% of repeating units (B) derived from (meth)acrylic acid (b), and 0.001 mol% to 0.15 mol% of repeating units (C) having a glutaric anhydride structure. [In formula (1), R 1 and R 1' Each independently represents one or more alkyl groups having 1 to 8 carbon atoms substituted at any position on the phenyl group. ]

Description

technical field [0001] The present invention relates to a thermoplastic resin composition which is excellent in heat resistance, transparency, appearance after molding, and weather resistance, and which suppresses coloring during molding; a molded article comprising the thermoplastic resin composition; and a vehicle comprising the molded article with parts. [0002] This application claims priority based on Japanese Patent Application No. 2017-138114 filed in Japan on July 14, 2017 and Japanese Patent Application No. 2018-104326 filed in Japan on May 31, 2018, and the contents thereof are hereby cited . Background technique [0003] (Meth)acrylic resins are widely used in various fields such as optical materials, vehicle parts such as automobiles, lighting materials, and building materials due to their excellent transparency and dimensional stability. [0004] In recent years, there has been a demand for materials suitable for use in lamp covers and vehicle parts, which no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/06C08K5/524
CPCC08K5/524C08F220/382C08L35/00C08F220/14C08F220/06C08L33/12C08L33/14C08K5/005C08K5/13C08L33/06C08K5/527C08F222/04
Inventor 杨井寿美饰西佳史兼森纮一
Owner MITSUBISHI CHEM CORP
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