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Heat-proof impact-resistant thermoplastic resin continuous preparation method

A thermoplastic resin and heat-resistant technology, which is applied in the field of continuous preparation of polystyrene thermoplastic resin polymers, can solve the problems of the complexity of the process flow, the particularity of the toughening agent and the low production efficiency, and achieves improved production effect and better production efficiency. The effect of technical effects

Inactive Publication Date: 2007-07-11
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the complexity of the process flow, the particularity of the toughening agent and the low production efficiency when the impact-grade SMA is prepared by the continuous method in the above-mentioned documents, and to provide a new heat-resistant and high-resistance Continuous preparation method of thermoplastic resin

Method used

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  • Heat-proof impact-resistant thermoplastic resin continuous preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The two reactors are both in the form of screw + draft tube stirring, with volumes of 11 liters and 16.5 liters respectively.

[0026] Semi-continuous startup phase:

[0027] The batching composition comprises the following components in weight percentage: St 95%, ethylbenzene 5%, initiator 0.013%. 11.5 kg of mixed material was quickly poured into the second reactor, stirred and polymerized at 105°C, and 7.5 kg of mixed material was injected into the first kettle after 2 hours, stirred and polymerized at 90°C for 3 hours.

[0028] Double kettle continuous stage:

[0029]The feed composition of the first kettle comprises the following components in weight percentage: 8.8% of PB, 83.8% of St, 2.36% of MA, 5% of EB, 0.0286% of BPO. It is 560rpm; the second tank feed composition comprises the following components in weight percentage: MA 10.7%, St 82.3%, EB 5%, BPO 0.0715%, antioxidant "264" 0.396%, and the supplementary speed is 1600 grams / hour , the reaction temperatur...

Embodiment 2

[0031] Semi-continuous startup phase:

[0032] Take the same way as in Example 1.

[0033] Double kettle continuous stage:

[0034] The feed composition of the first kettle comprises the following components in weight percentage: 8.83% of PB, 75.0% of St, 2.37% of MA, 15.0% of EB, 0.0238% of BPO. It is 500 rpm; the second tank feed composition comprises the following components in weight percentage: MA 10.7%, St 74.3%, EB 15%, BPO0.0596%, antioxidant "1076" 0.33%, supplementary speed is 1810 grams / hour, the reaction temperature is 88°C, and the stirring speed is 85 rpm. Devolatilization and sample performance measurement are the same as in Example 1. The properties of the obtained resin are shown in Table 1.

Embodiment 3

[0036] Semi-continuous startup phase:

[0037] Take the same way as in Example 1.

[0038] Double kettle continuous stage:

[0039] The feed composition of the first kettle comprises the following components in weight percent: 7.03% of PB, 85.5% of St, 2.5% of MA, 10.0% of EB, and 0.0238% of BPO. 500 revs / min; The second still feed composition comprises following component MA 10.5% in percentage by weight, St 9.5%, EB 18.3%, BPO 0.0596%, antioxidant " 1076 " 0.33%, supplementary speed is 1780 grams / hours, the reaction temperature was 93°C, and the stirring speed was 85 rpm. Devolatilization and sample performance measurement are the same as in Example 1. The properties of the obtained resin are shown in Table 1.

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Abstract

The invention relates the continuous method for preparation of heat resistance and bruise resistance thermoplastic resin polyaromatics. In the invention, using the technical project of double stills bulk polymerization, to made the toughening rubber styrenemaleic anhydride copolymer, it can reach the requirement of different bruise resistance and heat-proof quality by adjusting the feed composition and technology formulation. The method, which possesses simple technology and stabilization operation, can be used in industrial production. The method comprises the following steps: importing the solution, which is formulated by phenylethene, rubber, part maleic anhydride, part phenylethane solution and part initiating agent, into the first autoclave with screw-guide shell, at 80-100 DEG C for 2-6 hours, then importing the effluent from the first autoclave and the solution which is formulated by surplus maleic anhydride, phenylethene, phenylethane solution, initiating agent and anti-oxidant into the second autoclave at 80-130 DEG C for 2-7 hours, then getting the thermoplastic resin polymerization product.

Description

technical field [0001] The invention relates to a continuous preparation method of a heat-resistant and impact-resistant thermoplastic resin, more precisely, the invention relates to a continuous preparation method of a polystyrene thermoplastic resin polymer with excellent comprehensive properties such as heat resistance and impact resistance. Background technique [0002] To prepare heat-resistant and impact-resistant polystyrene resins, α-methylstyrene can be used to replace styrene in whole or in part to prepare HIPS or ABS to improve heat resistance. For example, 60-75% by weight is introduced in CN02800044.7 The α-methylstyrene is used to prepare heat-resistant ABS resin; CA2009080 and EP0439883A1 describe the preparation of heat-resistant HIPS by blending HIPS with the product of α-methylstyrene partially substituted styrene and rubber anion graft copolymerization. There is also a method of adding a small amount of N-phenylmaleimide in the polymerization, and blending...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F253/00C08F2/00
Inventor 夏燕敏
Owner CHINA PETROLEUM & CHEM CORP