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Method for preparing thermoplastic resin

A thermoplastic resin and alkyl aromatic hydrocarbon technology, which is applied in the field of thermoplastic resin preparation, can solve the problems of poor thermoplastic resin performance, complex process, special raw materials, etc., and achieve good impact resistance comprehensive performance, simple preparation process, and wide raw material requirements. Effect

Inactive Publication Date: 2003-09-24
CHINA PETROLEUM & CHEM CORP +1
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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 poor performance of the thermoplastic resin obtained by the bulk method in the above literature, the complicated process of the solution method, and the problems of special raw materials, etc., and provide a new preparation method for thermoplastic resin. The thermoplastic resin prepared by the method has the characteristics of excellent comprehensive properties such as heat resistance and impact resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0023] Dissolve 280 grams of high-shun gum (BR9002) in 2800 grams of styrene and 1000 grams of butanone, add in 10 liters of reaction kettle, add 1.6 grams of initiator BPO dissolved in 100 grams of butanone after rising to the reaction temperature, Carry out the replenishment of maleic anhydride solution then, the preparation of supplementary liquid is 640 gram maleic anhydride+960 gram methyl ethyl ketone+9.6 gram BPO, reaction carries out altogether 8 hours, and reaction temperature remains on 86 ℃, and the first 3 hours replenishment speed is 180 milliliters / hour, the supplementary speed is 220 milliliters / hour in the last 5 hours, the stirring speed in the first 4 hours is 220 revolutions / minute, and the stirring speed in the latter 4 hours is 90 revolutions / minute, add 40 milliliters of antioxidant 264 after the reaction finishes The ketone solution (20% by weight percentage) is discharged after aging for 10 minutes, and is devolatilized and granulated with a twin-screw e...

Embodiment 3

[0024]Dissolve 425 grams of rubber in 3,825 grams of styrene and 1,200 grams of butanone, add it to a 10-liter reactor, and add 0.61 grams of initiator BPO dissolved in 100 grams of butanone after rising to the reaction temperature, and then perform maleic anhydride The addition of the solution, the preparation of the addition solution is 720 grams of maleic anhydride + 1080 grams of methyl ethyl ketone + 1.9 grams of BPO, the reaction was carried out for 6 hours in total, the reaction temperature was kept at 91 °C, and the whole process of addition speed was 240 ml / hour. Hour stirring speed is 220 revs / min, after 3 hours stirring speed is 90 revs / min, after reaction finishes, add the butanone solution (20% by weight percentage) of 40 milliliters of antioxidants 264, discharge after ripening 10 minutes, Devolatilization granulation was carried out with a twin-screw extruder. The properties of the obtained resin are shown in Table 1.

[0025] Tensile Strength

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PUM

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Abstract

The present invention relates to a preparation method of thermoplastic resin, and is characterized by that it utilizes the adoption of improved semi-continuous self-body method to make graft copolymerization, and includes the following steps: firstly, dissolving the rubber in monoalkyl aromatic hydrocarbon monomer, then using the above-mentioned material and partial solvent butanone to form mixedsolution, and placing the mixed solution into reactor, heating to reaction temp. 75-110 deg.C, adding initiator and additive material formed by dissolving dicarboxylic acid anhydride in the residual butanome solvent and adding initiator, reacting for 4-10 hr., making devolatilization so as to obtain thermoplastic resin.

Description

technical field [0001] The invention relates to a preparation method of a thermoplastic resin, in particular to a preparation method of a thermoplastic resin with excellent comprehensive properties such as heat resistance and impact resistance. Background technique [0002] Thermoplastic resin polymers and their alloys with excellent comprehensive properties such as heat resistance and impact resistance can be used in automotive parts, such as instrument panel frames, control boxes, glove boxes, lampshade bases, radio brackets, etc., and can also be used in parts of household appliances. Such as air conditioners, fans in heaters, electric rice cookers, bases of electric heating pots, etc. In addition, it can also be applied to the preparation of polymer alloys, blends and composite materials. [0003] Styrene-maleic anhydride random copolymer (R-SMA) not only maintains the good processability of styrene resin, but also has high heat resistance a...

Claims

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Application Information

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IPC IPC(8): C08F2/02C08F2/44C08F212/08
Inventor 夏燕敏王巍龚燕芳李斌张玉芳
Owner CHINA PETROLEUM & CHEM CORP