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Method for preparing styrene/isoprene/maleic anhydride multi-block polymer with polyolefin as carrier

A technology of maleic anhydride and isoprene, which is applied in the field of preparing styrene/isoprene/maleic anhydride multi-block polymers, and achieves the effect of simple processing technology, simple equipment and good product performance

Inactive Publication Date: 2012-12-19
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent does not involve the reactive extrusion synthesis of styrene / isoprene / maleic anhydride multi-block copolymers

Method used

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  • Method for preparing styrene/isoprene/maleic anhydride multi-block polymer with polyolefin as carrier
  • Method for preparing styrene/isoprene/maleic anhydride multi-block polymer with polyolefin as carrier
  • Method for preparing styrene/isoprene/maleic anhydride multi-block polymer with polyolefin as carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] At room temperature, dissolve 0.175kg maleic anhydride and 0.016kg di-tert-butyl peroxide in 0.175kg acetone, mix 0.305kg isoprene and 0.305kg styrene; pre-set the nine-stage heating cylinder of the twin-screw extruder The temperature along the extrusion direction is 68°C, 103°C, 170°C, 200°C, 200°C, 200°C, 200°C, 190°C, 215°C, and the screw speed is 100r / min; when the temperature of the heating cylinder reaches the predetermined temperature 10kg of polypropylene pellets with a melt index of 1.84g / 10min are fed into the extruder from the main feeding port located in the first section of the extruder, and the feeding speed is 0.1kg / min; The acetone solution of the agent is injected at a rate of 0.0035kg / min from the third stage of the liquid feed port of the extruder through a metering pump, and the 1:1 solution of isoprene and styrene is injected from the third stage of the liquid feed port through another metering pump. Inject at a speed of 0.0061kg / min; carry out vacu...

Embodiment 2

[0029] At room temperature, dissolve 0.3kg of maleic anhydride and 0.027kg of di-tert-butyl peroxide in 0.3kg of acetone, mix 0.6kg of isoprene and 0.6kg of styrene; pre-set the nine-stage heating cylinder of the twin-screw extruder The temperature along the extrusion direction is 68°C, 103°C, 170°C, 200°C, 200°C, 200°C, 200°C, 190°C, 215°C, and the screw speed is 100r / min; when the temperature of the heating cylinder reaches the predetermined temperature 10kg of polypropylene pellets with a melt index of 1.84g / 10min are fed into the extruder from the main feeding port located in the first section of the extruder, and the feeding speed is 0.1kg / min; The acetone solution of the agent is injected at a rate of 0.006kg / min from the third stage of the liquid feed port of the extruder through a metering pump, and the 1:1 solution of isoprene and styrene is injected from the third stage of the liquid feed port through another metering pump. Inject at a speed of 0.012kg / min; carry out...

Embodiment 3

[0036] At room temperature, dissolve 0.685kg of maleic anhydride and 0.061kg of di-tert-butyl peroxide in 0.685kg of acetone, mix 1.135kg of isoprene and 1.135kg of styrene; pre-set the nine-stage heating cylinder of the twin-screw extruder The temperature along the extrusion direction is 68°C, 103°C, 170°C, 200°C, 200°C, 200°C, 200°C, 190°C, 215°C, and the screw speed is 100r / min; when the temperature of the heating cylinder reaches the predetermined temperature 10kg of polypropylene pellets with a melt index of 1.84g / 10min are fed into the extruder from the main feeding port located in the first section of the extruder, and the feeding speed is 0.1kg / min; The acetone solution of the agent is injected at a rate of 0.0137kg / min from the third liquid feeding port of the extruder through a metering pump, and the 1:1 solution of isoprene and styrene is injected from the third liquid feeding port through another metering pump. Inject at a speed of 0.0227kg / min; carry out vacuum de...

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Abstract

The invention relates to a method for preparing a styrene / isoprene / maleic anhydride multi-block polymer through reactive extrusion. Raw materials for the polymer comprise polyolefin, maleic anhydride, styrene, isoprene and a peroxide initiator, i.e., a di-tert-butyl peroxide compound. The method is characterized in that: polypropylene is added from a main feeding inlet at a first section of a twin-screw extruder; maleic anhydride and the initiator are dissolved in acetone and are added from a liquid feeding inlet at a third section of the extruder through a pipeline and a metering pump; isoprene and styrene are simultaneously added from the liquid feeding inlet at the third section of the extruder through another pipeline and another metering pump, temperature of a reaction section of the extruder is controlled to be 170 to 230 DEG C, and then polymerization is carried out. Compared with the prior art, the invention has the advantage that bulk polymerization is carried out on monomers by directly using the twin-screw extruder as a reactor. Meanwhile, the reactive extrusion method provided by the invention can prepare the styrene / isoprene / maleic anhydride polymer grafted on polypropylene, and the polymer can be used as an adhesive.

Description

technical field [0001] The invention relates to a method for preparing styrene / isoprene / maleic anhydride multi-block polymer by reactive extrusion and using polyolefin as carrier. Specifically, polyolefin is used as a carrier through a twin-screw extruder, and maleic anhydride and styrene isoprene mixed monomers are used as raw materials to prepare styrene / isoprene / maleic acid through polymerization reaction extrusion. Anhydride multi-block polymers. Background technique [0002] Today, styrene / diene block copolymers are widely used in many fields such as home appliances, construction, adhesives, and automotive parts. [0003] At present, most of the methods for preparing styrene / diene block copolymers at home and abroad use the reactor as the anionic solution polymerization of the polymerization reactor. This means that in the polymerization process, a large amount of solvent is required, and the follow-up work such as separation, purification, and recovery of the solvent...

Claims

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Application Information

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IPC IPC(8): C08F255/02C08F222/08C08F236/10B29C47/92B29C48/92
CPCB29C48/022B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 夏浙安丁锐王彦华胡吉霞陈建定
Owner EAST CHINA UNIV OF SCI & TECH
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