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Thermoplastic resin composition, method for producing same, and molded article produced using same

A thermoplastic resin and composition technology, applied in the field of thermoplastic resin composition, its preparation, and molded products manufactured using it, can solve the problems of reduced heat resistance, increased generation of residual oligomers, and reduced product yield, etc., to achieve Effects of excellent colorability, low processability and scratch resistance, excellent weather resistance and heat resistance

Pending Publication Date: 2022-07-29
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the product yield decreases due to high viscosity, and the generation of residual oligomers increases due to the decomposition of the copolymer, thereby reducing heat resistance

Method used

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  • Thermoplastic resin composition, method for producing same, and molded article produced using same
  • Thermoplastic resin composition, method for producing same, and molded article produced using same
  • Thermoplastic resin composition, method for producing same, and molded article produced using same

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preparation example Construction

[0134]

[0135] In describing the method for preparing the thermoplastic resin composition of the present invention, all the contents of the thermoplastic resin composition described above are included.

[0136] For example, the method of preparing the thermoplastic resin composition is as follows.

[0137] For example, the method for preparing a thermoplastic resin composition may include a step of preparing a styrene-based copolymer by suspension polymerizing a polymerization solution prepared by adding 100 parts by weight of a (meth)acrylate-based monomer, an aromatic Group vinyl monomer, monomer mixture of maleimide monomer, 100 to 200 parts by weight of reaction solvent, 0.01 to 1 part by weight of initiator, 1 to 5 parts by weight of It is prepared by mixing a dispersant and 0.01 part by weight to 1 part by weight of a molecular weight regulator.

[0138] In the step of preparing the styrene-based copolymer, the reaction solvent may be water. In this case, the heat o...

Embodiment 1

[0165]

[0166]140 parts by weight of deionized water, 86 parts by weight of methyl methacrylate (hereinafter referred to as "MMA"), 4 parts by weight of N-phenylmaleimide (hereinafter referred to as "PMI"), 10 Parts by weight of styrene (hereinafter referred to as "SM"), 0.06 parts by weight of tert-butyl peroxybenzoate as an initiator, 1.3 parts by weight of tricalcium phosphate as a dispersant, and 0.2 parts by weight of tert-ten as a molecular weight regulator Dialkyl mercaptan was introduced into the reactor, and then the temperature was raised to 100°C at 500 rpm to start the polymerization reaction. The polymerization reaction was held for 6 hours. Thereafter, the polymerization reaction was completed.

[0167] To the prepared polymerization slurry, formic acid was added, its pH was adjusted to 2.5 to remove the dispersant, and then washing, dehydration, and drying were performed to prepare a bead-like styrenic copolymer. The prepared copolymer had a refractive inde...

Embodiment 2～6

[0171] Samples were prepared in the same manner as in Example 1, except that the components and contents shown in Table 1 below were used in preparing the styrene-based copolymer (A).

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Abstract

The present invention has the effects of providing a thermoplastic resin composition, a method for preparing the thermoplastic resin composition, and a molded article comprising the thermoplastic resin composition, the thermoplastic resin composition comprising: a styrene-based copolymer containing a (meth) acrylate-based monomer, an aromatic vinyl-based monomer, and a maleimide-based monomer; a first graft copolymer comprising an acrylic rubber polymer, an aromatic vinyl-based monomer, and a vinyl nitrile-based monomer; and a second graft copolymer containing an acrylic rubber polymer, an aromatic vinyl monomer, and a vinyl nitrile monomer, in which the content of residual oligomers in the styrene copolymer is 0.37 wt% or less, and the content of residual oligomers in the styrene copolymer is 0.37 wt% or less. The acrylic rubber polymer of the first graft copolymer and the acrylic rubber polymer of the second graft copolymer have different average particle sizes.

Description

technical field [0001] [Cross-reference to related applications] [0002] This application claims Korean Patent Application No. 10-2020-0146750 filed on Nov. 5, 2020 with the Korean Intellectual Property Office and Korean Patent Application No. 10- 2021-0074833, the disclosures of each of which are incorporated herein by reference. [0003] The present invention relates to a thermoplastic resin composition, a method for producing the same, and a molded article produced using the same, and more particularly, to a thermoplastic resin composition having excellent weather resistance and heat resistance and remarkably improved processability and scratch resistance, while improving colorability and A thermoplastic resin composition in which deterioration of heat resistance is minimized, a method for producing the thermoplastic resin composition, and a molded article produced using the thermoplastic resin composition. Background technique [0004] Acrylonitrile-butadiene-styrene ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/06C08L55/02C08L35/06C08F220/18C08F212/06C08F2/18B29B11/10C08F222/40C08F279/04
CPCC08F2/18C08L2205/025C08L2205/03C08F220/14C08L33/12C08F212/08C08F222/40C08L51/04C08L51/003C08F212/10C08F279/04
Inventor 金仁秀李亨燮李大雨朴晶台崔硕祚朱玟徹申珉承洪晟元柳玄浚
Owner LG CHEM LTD
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