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Transparent rubber modified styrene resin

A technology of styrene-based resin and transparent rubber, which is applied in the field of rubber-modified styrene-based resin, can solve the problems that the chemical resistance and physical properties of the resin cannot be improved, and achieve a well-balanced effect

Active Publication Date: 2015-11-18
CHI MEI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the resin of this patent can improve the transparency and impact resistance of the resin, the chemical resistance and physical properties of the resin cannot be improved

Method used

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  • Transparent rubber modified styrene resin
  • Transparent rubber modified styrene resin
  • Transparent rubber modified styrene resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] 12 parts by weight of the rubbery copolymer, 33 parts by weight of styrene monomer, 52 parts by weight of methyl methacrylate monomer, 15 parts by weight of acrylonitrile monomer, 33 parts by weight of ethylbenzene, and dibenzoyl peroxide 1000 ppm was uniformly mixed to form a feed solution. Wherein, the rubber-like copolymer is a linear increasing block copolymer with a Mooney viscosity of 45, containing 25 wt% of polystyrene blocks and 75 wt% of polybutadiene blocks, wherein the 1,2-vinyl content accounts for 15.4 wt%. The block copolymer contains a polystyrene block, a polybutadiene block, and a styrene / butadiene block with increasing styrene content.

[0083] The feed solution was continuously pumped at a flow rate of 35 kg / hr to a continuous polymerization unit in which 4 complete mixing type continuous stirred reactors (each with a capacity of 40 liters) were connected in series. Among them, the reaction temperature of the first reactor is controlled at 99°C, th...

Embodiment 2～4 and comparative example 1～6

[0085] The polymerization conditions and preparation methods of Examples 2-4 and Comparative Examples 1-5 are roughly the same as those of Example 1, except for the composition and content ratio of the feed solution, and the polymerization conditions. The polymerization conditions and preparation method of Comparative Example 6 are roughly the same as those of Example 1, except for the rubbery copolymer used, the composition and content ratio of the feed solution, and the polymerization conditions. The compositions and content ratios of the feed solutions of Examples 2-4 and Comparative Examples 1-6 are described in Table 1 in detail. The characteristics of each component in the preparation process of Examples 2-4 and Comparative Examples 1-6 are respectively recorded in Table 2.

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Abstract

A transparent rubber-modified styrene resin comprises the following components: a disperse phase (A) which comprises a plurality of rubber particles that are formed by rubber-shaped copolymer, and a continuous phase (B) which is formed by copolymers. In the disperse phase (A), average particle diameter of the rubber particles is 0.2-0.55mu m. The rubber-shaped copolymer is linear block copolymer and comprises 10-50wt% of polystyrene block and 50-90wt% of polybutadiene block. In the continuous phase (B), the copolymer comprises the following components: 21-55 by weight parts of styrene monomer units, 23-70 by weight parts of (methyl)acrylate monomer units, and 9-22 by weight parts of acrylonitrile monomer units. The refractive index difference between the continuous phase (B) and the rubber-shaped copolymer is smaller than 0.01. The transparent rubber-modified styrene resin has the following advantages: high chemical resistance, high transparency, and high physical property.

Description

technical field [0001] The present invention relates to a transparent rubber-modified styrenic resin, in particular to a rubber-modified styrenic resin comprising a continuous phase formed of a copolymer and a dispersed phase containing a plurality of rubber particles. Background technique [0002] Rubber-modified styrene-based resin is a material with good strength and formability, so it is widely used in household goods such as food containers and packaging materials, home appliances, and OA equipment casings. Because general rubber-modified styrene-based resins are opaque, they cannot be used in the manufacture of transparent products. In order to make the rubber-modified styrene-based resin have both strength and transparency, and to make the resin meet other required properties (such as chemical resistance, other mechanical properties, etc.) Mixing with styrene-butadiene block copolymer, but this method cannot effectively improve the strength of rubber-modified styrene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F287/00C08F220/14C08F212/10C08F220/44
Inventor 许瑞熙郭铭洲
Owner CHI MEI CORP