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Composition of styrene based copolymer, polymerization method of said composition, and styrene based copolymer obtained from the method

A styrenic and copolymer technology, applied in the field of styrenic copolymers, can solve the problems of coloring, insufficient mechanical properties, low molecular weight, etc., and achieve the effects of maintaining moldability, improving appearance quality, excellent appearance and light resistance

Active Publication Date: 2010-12-01
现代EP(株)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, this method suffers from disadvantages such as coloring problems, low degree of polymerization due to poor reactivity, and insufficient mechanical properties due to low molecular weight
Although the above-mentioned patent publications suggest introducing an ultraviolet stabilizer in the resulting styrenic copolymer resin composition, this method is not suitable for large-scale production systems because it requires an additional extrusion process after the copolymer is prepared, and , this method has the problem of increasing the production cost caused by the additional manufacturing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056]90 parts by weight of styrene (SM) and 10 parts by weight of methacrylic acid (MAA) were mixed to prepare a monomer composition. Add 14 parts by weight of ethylbenzene, 4 parts by weight of 2-ethylhexanol, 1 part by weight of diethylene glycol monobutyl ether, 200 ppm malonic acid [(4-methoxyphenyl) in 100 parts by weight of the monomer composition -methylene]dimethyl ester (Hostavin PR-25 manufactured by Clariant), and 100 ppm 2,2-bis(4,4-bis(tert-butylperoxy)cyclohexyl)propane (available from NOF Corporation's Pertetra-A). The reaction mixture thus prepared is then introduced into the first reactor, followed by polymerization. The temperature of the first reactor to which the composition was added was set at 135°C, the temperature of the second reactor was set at 140°C, and the residence time of the reactants was adjusted to give a final conversion of 60%. Next, the resulting reaction mixture was transferred to a continuous devolatilization device, and then the tempe...

Embodiment 2

[0058] A granular copolymer resin was prepared in the same manner as in Example 1, except that 2 parts by weight of 2-ethylhexanol and 3 parts by weight of diethylene glycol monobutyl ether were added as plasticizers.

Embodiment 3

[0060] A granular copolymer resin was prepared in the same manner as in Example 1, except that 1.5 parts by weight of 2-ethylhexanol and 0.5 parts by weight of diethylene glycol monobutyl ether were added as plasticizers.

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PUM

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Abstract

Provided is a styrene-based copolymer resin composition, a polymerization method of the same composition, and a styrene-based copolymer prepared therefrom. Specifically, the present invention provides a styrene-based copolymer resin composition which is capable of achieving excellent appearance quality, heat resistance and light resistance, a polymerization method of the same composition, and a styrene-based copolymer prepared therefrom.

Description

technical field [0001] The present invention relates to a styrenic copolymer resin composition, a method for polymerizing the composition, and a styrenic copolymer resin prepared by the method. More particularly, the present invention relates to a styrenic copolymer resin composition capable of obtaining excellent appearance quality, heat resistance and light resistance, a polymerization method of the composition, and a styrenic copolymer prepared by the method. Background technique [0002] In general, conventional styrene resins have excellent transparency, moldability, and rigidity, and thus are widely used as molding materials used in housewares and household products, electrical and electronic products, packaging materials, and the like. In order to further expand the application fields of styrene resins, many efforts have been made to improve physical properties of styrene resins, or to impart new functions to styrene resins. For example, as one method of improving th...

Claims

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Application Information

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IPC IPC(8): C08L25/08
CPCC08L25/08C08K5/06C08L71/02C08L2666/22C08L25/06
Inventor 金润哲郑东权朴京培朴赞文金圣珍
Owner 现代EP(株)