Allyl sulfonic glycerin polyoxyethylene polyoxypropylene ether polycarboxylic acid water reducer and its synthesis method

An allyl sulfonic acid-based glycerol and polymer technology, which is applied in the field of polymers and their synthesis, can solve problems such as unsatisfactory compounding methods, and achieve the effects of strong functionality and simple synthesis process.

Active Publication Date: 2013-07-03
LIAONING OXIRANCHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the method of compounding is not ideal

Method used

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  • Allyl sulfonic glycerin polyoxyethylene polyoxypropylene ether polycarboxylic acid water reducer and its synthesis method
  • Allyl sulfonic glycerin polyoxyethylene polyoxypropylene ether polycarboxylic acid water reducer and its synthesis method
  • Allyl sulfonic glycerin polyoxyethylene polyoxypropylene ether polycarboxylic acid water reducer and its synthesis method

Examples

Experimental program
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Effect test

Synthetic example 1

[0054] Add 39.6 g of allyl sulfonic acid glycerol and 0.21 g of sodium hydroxide into the autoclave, perform nitrogen replacement three times, then heat up the autoclave and start stirring. When the temperature in the kettle reaches the initiation temperature, add 2g of ethylene oxide. After the temperature rises and the pressure drops, add 64g of ethylene oxide continuously and stably, control the reaction temperature at 120-140°C, and control the flow rate for 2 hours. . After the feeding is completed, the aging reaction is carried out for 30 to 50 minutes under constant temperature conditions. Until the pressure no longer drops, the reaction is completed, and the temperature is lowered. When the temperature in the reactor drops to 90°C, take out 70.4g of material, and then add 0.22g of sodium hydroxide to the remaining 35.2g of material in the reactor for nitrogen replacement. After three times, the temperature of the reactor was raised, and 74.8 g of ethylene oxide was co...

Synthetic example 2

[0056] 26.4 g of allyl sulfonic acid glycerol and 0.21 g of sodium hydroxide were added into the autoclave, and after nitrogen replacement three times, the temperature of the autoclave was raised and stirring was started. When the temperature in the kettle reaches the initiation temperature, add 2g of ethylene oxide. After the temperature rises and the pressure drops, add 77.2g of ethylene oxide continuously and stably, control the reaction temperature at 120-140°C, and control the flow rate for 2 hours Finish. After the feeding is completed, the aging reaction is carried out for 30 to 50 minutes under constant temperature conditions. Until the pressure no longer drops, the reaction is completed, and the temperature is lowered. When the temperature in the reactor drops to 90°C, take out 79g of material, and then add 0.22g of sodium hydroxide to the remaining 26.6g of material in the reactor, and replace it with nitrogen three times. Finally, the temperature of the reactor was...

Synthetic example 3

[0058] 26.4 g of allyl sulfonic acid glycerol and 0.21 g of sodium hydroxide were added into the autoclave, and after nitrogen replacement three times, the temperature of the autoclave was raised and stirring was started. When the temperature in the kettle reaches the initiation temperature, add 2g of ethylene oxide. After the temperature rises and the pressure drops, add 77.2g of ethylene oxide continuously and stably, control the reaction temperature at 120-140°C, and control the flow rate for 2 hours Finish. After the feeding is completed, the aging reaction is carried out for 30 to 50 minutes under constant temperature conditions. Until the pressure no longer drops, the reaction is completed, and the temperature is lowered. When the temperature in the reactor drops to 90°C, take out 79g of material, and then add 0.22g of sodium hydroxide to the remaining 26.6g of material in the reactor, and replace it with nitrogen three times. Finally, the temperature of the reactor was...

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Abstract

The invention provides an allyl sulfonic glycerin polyoxyethylene polyoxypropylene ether polycarboxylic acid water reducer and its synthesis method. Belonging to the field of concrete admixtures, the water reducer is a polymer of allyl sulfonic glycerin polyoxyethylene ether or allyl sulfonic glycerin polyoxypropylene ether (unit A) and unsaturated carboxylic acid and its derivative (unit B). According to the synthesis method provided in the invention, 500-6000 structural unit A is adopted as a polymerization monomer to undergo random free radical copolymerization in an aqueous system. Due to the introduction of a long chain of allyl sulfonic glycerin into a side chain, the water reducer has an early strength function, thus changing the mode of achieving an early strength effect only through compounding an early strength agent. Additionally, the water reducer provided in the invention has a simple synthesis process, good compatibility and good adaptability, and facilitates substantial improvement of the production efficiency and production benefits.

Description

technical field [0001] The present invention relates to a polymer and its synthesis method. More specifically, the present invention relates to an allylsulfonic acid glycerin polyoxyethylene polyoxypropylene ether polycarboxylate water reducer and its synthesis method. Background technique [0002] With the development of our country's national economy, concrete is the most used material in modern construction projects in our country. It is widely used in various water conservancy projects, road projects, industrial buildings, civil buildings and modern military projects. With the rapid growth of the national economy, the number of projects has increased, and the road mileage has doubled, higher requirements have been placed on the performance of cement concrete to meet the needs of different projects. [0003] However, construction defects in some concrete projects are not allowed to be repaired according to conventional methods under normal conditions, such as road surface...

Claims

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Application Information

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IPC IPC(8): C08F290/06C08F220/06C08F222/06C08F220/28C04B24/26C04B103/30
Inventor 朱建民刘兆斌董振鹏仲崇刚周立明田威
Owner LIAONING OXIRANCHEM INC
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