Method for preparing phosphate functional monomer by P2O5 dispersion method and application

A technology of functional monomers and phosphate esters, applied in the chemical industry, can solve the problems of difficult separation and recovery of toxic organic solvents, environmental pollution, etc., and achieve the effects of easy industrial production, simple synthesis methods, and mild reaction conditions

Inactive Publication Date: 2018-03-13
贵州中兴南友建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide a 2 o 5 As a phosphorylation agent, disperse P with a polymerizable unsaturated organic compound 2 o 5 The method for synthesizing phosphate ester functional monomers in a unique feeding method, the polymerizable unsaturated organic compound dispersant used in the synthesis process can participate in subsequent polymerization reactions, and solves the problem of low boiling point and toxic organic compounds used in the preparation process of existing phosphate ester functional monomers. Solvent separation and recovery difficulties and environmental pollution problems, while simplifying the synthesis route of phosphate ester functional monomers

Method used

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  • Method for preparing phosphate functional monomer by P2O5 dispersion method and application

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Embodiment 1

[0018] (1) Add 213g P 2 o 5 Put it in 426g methyl acrylate, stir well and use it as a phosphorylation reagent for later use; (2) Add 6.2g hydroquinone and 348g hydroxyethyl acrylate to a 1500mL four-necked flask equipped with a stirrer and a thermometer, and place it at 0~ 8 o In an ice-water bath of C, under high-speed stirring, slowly dissolve the above-mentioned P dispersed with methyl acrylate 2 o 5 Put it in 5 times, keep the temperature at 8~45 o C, after the feeding is completed, the temperature is rapidly raised to 65 o C, keep warm for esterification for 4 hours, add 28g deionized water and heat up to 70 o C, keep warm for 2.5 hours, and obtain a brownish-yellow liquid, which is a phosphate functional monomer solution in which methyl acrylate is a solvent.

Embodiment 2

[0020] (1) Add 213g P 2 o 5 Put it in 426g methyl methacrylate, stir well and use it as a phosphorylation reagent for later use; (2) Add 7.1g p-hydroxyanisole and 468g hydroxyethyl methacrylate to a 1500mL four-necked flask equipped with a stirrer and a thermometer , placed in 0~8 o In an ice-water bath of C, under high-speed stirring, slowly dissolve the above-mentioned P dispersed with methyl methacrylate 2 o 5 Put it in 5 times, keep the temperature at 8~45 o C, after the feeding is completed, the temperature is rapidly raised to 70 o C, keep warm for esterification for 4 hours, add 34g deionized water and heat up to 85 o C, keep warm for 2 hours, and obtain a brownish-yellow liquid, which is a phosphate functional monomer solution in which methyl methacrylate is a solvent.

Embodiment 3

[0022] (1) Combine 142g P 2 o5 Put it in 426g ethyl acrylate, stir well and use it as a phosphorylation reagent for later use; (2) Add 5.5g hydroquinone and 260g hydroxypropyl acrylate to a 1500mL four-necked flask equipped with a stirrer and a thermometer, and place it at 0~ 8 o In an ice-water bath of C, under high-speed stirring, slowly dissolve the above-mentioned P dispersed with ethyl acrylate 2 o 5 Put it in 3 times, keep the temperature at 8~45 o C, after the feeding is completed, the temperature is rapidly raised to 70 o C, keep warm for esterification for 4 hours, add 20g deionized water and heat up to 85 o C, keep warm for 1.5 hours, and obtain a brownish-yellow liquid, which is a phosphate functional monomer solution in which ethyl acrylate is a solvent.

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Abstract

The invention discloses a method for preparing a phosphate functional monomer by a P2O5 dispersion method and application. The invention relates to a method for synthesizing a phosphate functional monomer by feeding a polymerizable unsaturated organic compound dispersed P2O5, wherein a polymerizable unsaturated organic compound dispersing agent used in a synthesis process can participate in a subsequent polymerization reaction, thereby solving the problems of difficult separation and recovery of a low-boiling-point and toxic organic solvent adopted in a preparation process of an existing phosphate functional monomer and environmental pollution, and simultaneously simplifying the synthesis route of the phosphate functional monomer. The invention also discloses a method for preparing a high-performance polycarboxylate superplasticizer by taking a phosphate functional monomer solution with a polymerizable unsaturated organic compound as a solvent as a third monomer of a polycarboxylate superplasticizer, so that the problem of contradiction between dispersion capacity and slump retention capacity of an existing polycarboxylate superplasticizer is solved, and a method for preparing a high-performance polycarboxylate superplasticizer with high dispersion and slump retention capacity and strong cement adaptability is provided.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a phosphate ester functional monomer, a polycarboxylate water reducer, a preparation method and an application thereof. Background technique [0002] Polycarboxylate superplasticizer has the advantages of low dosage, high water reducing rate, good slump retention performance, and strong adjustable molecular structure. It has become the focus of domestic and foreign research and development of concrete superplasticizers and hot spots in the market, and has broad application prospects. , Has been widely used in dams, bridges, tunnels, high-speed rail and other key projects. In modern concrete, polycarboxylate superplasticizer not only improves the working performance of concrete, but also improves the mechanical and durability properties of concrete. With the continuous popularization and use of polycarboxylate superplasticizers, the performance requirement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/09C08F283/06C08F220/06C08F230/02C08F220/14C08F220/18C08F226/10C04B24/26C04B103/30
CPCC04B24/246C04B2103/302C07F9/091C08F283/065C08F220/18
Inventor 王毓夏卉芳
Owner 贵州中兴南友建材有限公司
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