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Aqueous phase ultrasonic synthesis method for maleic anhydride/alpha-arylalkene copolymer

A technology for maleic anhydride and ultrasonic synthesis, applied in the field of organic polymer synthesis, can solve the problems of slow reaction rate, high reaction temperature, and large pollution of organic solvents, and achieve the effects of improving initiation efficiency and improving reaction efficiency.

Active Publication Date: 2019-01-08
TIANJIN ANHAO PHARMATECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The above methods all have the disadvantages of high organic solvent pollution, slow reaction rate and high reaction temperature, and even some need nitrogen protection to ensure the activity of the organic initiator

Method used

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  • Aqueous phase ultrasonic synthesis method for maleic anhydride/alpha-arylalkene copolymer
  • Aqueous phase ultrasonic synthesis method for maleic anhydride/alpha-arylalkene copolymer
  • Aqueous phase ultrasonic synthesis method for maleic anhydride/alpha-arylalkene copolymer

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Experimental program
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Effect test

Embodiment 1

[0047]

[0048] Add 40.000g of deionized water, 9.806g of maleic anhydride, 0.101g of RAFT-1 reagent, 0.101g of sodium persulfate and 0.049g of diethanolamine into the polymerization reactor, and perform ultrasonic activation treatment for 0.5-5min, during which the temperature is controlled at 25°C . Slowly add 10.415g of styrene, and continue to react for 10 minutes after the addition; add an appropriate base to adjust the pH to 7, and obtain a clear maleic anhydride / styrene polymer aqueous solution. The viscosity-average molecular weight of the polymer is 18000, and the molecular weight distribution is 2.1.

Embodiment 2

[0050]

[0051]Add 40.000g of deionized water, 9.806g of maleic anhydride, 0.202g of RAFT-1 reagent, 0.202g of sodium persulfate and 0.049g of diethanolamine into the polymerization reactor, and perform ultrasonic activation treatment for 1min, during which the temperature is controlled at 27°C. Slowly add 10.415g of styrene, and continue to react for 14 minutes after the addition; add an appropriate base to adjust the pH to 7, and obtain a clear maleic anhydride / styrene copolymer aqueous solution. The viscosity-average molecular weight of the polymer is 18000, and the molecular weight distribution is 1.8.

Embodiment 3

[0053]

[0054] Add 40.000g of deionized water, 9.806g of maleic anhydride, 0.202g of RAFT-3 reagent, 0.202g of sodium persulfate and 0.049g of diethanolamine into the polymerization reactor, and perform ultrasonic activation treatment for 2min, during which the temperature is controlled at 30°C. Slowly add 10.415g of styrene, and continue to react for 18 minutes after the addition; add an appropriate base to adjust the pH to 7, and obtain a clear maleic anhydride / styrene copolymer aqueous solution. The viscosity-average molecular weight of the polymer is 10000, and the molecular weight distribution is 2.0.

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Abstract

The invention provides an aqueous phase ultrasonic synthesis method for a maleic anhydride / alpha-arylalkene copolymer. The aqueous phase ultrasonic synthesis method comprises the following steps: carrying out ultrasonic activation treatment on deionized water, maleic anhydride, an RAFT reagent, an initiator and a cross-linking agent, then adding alpha-arylalkene for a polymerization reaction, adding appropriate alkaline, and adjusting the pH to be 7 to obtain a maleic anhydride / alpha-arylalkene copolymer aqueous solution. According to the aqueous phase ultrasonic synthesis method for the maleic anhydride / alpha-arylalkene copolymer provided by the invention, the activity and reaction rate of aqueous polymerization of the maleic anhydride / alpha-arylalkene are accelerated by utilizing a microwave technology, and the polymerization temperature is reduced so that the polymerization reaction is carried out in a milder condition.

Description

technical field [0001] The invention belongs to the field of organic macromolecule synthesis, in particular to a water-phase ultrasonic synthesis method of maleic anhydride / α-arylene copolymer. Background technique [0002] Maleic anhydride / α-arylene copolymer is α-methylstyrene (AMS), maleic acid liver (MAn) copolymer is a new type of polymer material with low price and high potential value, which is widely used in various It has high economic value in the fields of paint pigment additives, modifiers for plastic products, and used to improve the processability of materials. [0003] At present, the common preparation methods of maleic anhydride / α-arene copolymer mainly include solution polymerization and precipitation polymerization. [0004] In CN201110051524.X, benzene, toluene or xylene, etc. are used as solvents, organic peroxides are used as initiators, and thiol compounds are used as polymerization inhibitors to synthesize low molecular weight styrene-malay Anhydrid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F222/06C08F212/08C08F212/32C08F2/38C08F2/10C08F4/34
CPCC08F2/10C08F2/38C08F4/34C08F222/06C08F212/08C08F212/32
Inventor 杨晴於兵曹育才叶晓峰
Owner TIANJIN ANHAO PHARMATECH CO LTD
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