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a p 2 o 5 Method and application for preparing phosphate ester functional monomer by dispersion method

A technology of functional monomer and phosphate ester, 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 method and strong adaptability

Inactive Publication Date: 2020-01-03
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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  • a p <sub>2</sub> o <sub>5</sub> Method and application for preparing phosphate ester functional monomer by dispersion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) 213g P 2 O 5 Put it in 426g methyl acrylate and stir it evenly as a phosphorylation reagent; (2) Add 6.2g hydroquinone and 348g hydroxyethyl acrylate into a 1500mL four-neck flask equipped with a stirrer and a thermometer, and place it at 0~ 8 o In the ice-water bath of C, under high-speed stirring, slowly disperse the above-mentioned dispersed P with methyl acrylate 2 O 5 Put in 5 times, keep the temperature at 8~45 o C, the temperature rises quickly to 65 after feeding o C, heat preservation and esterification for 4 hours, add 28g deionized water and heat to 70 o C, heat preservation for 2.5 hours to obtain a brown-yellow liquid that is a phosphate functional monomer solution with methyl acrylate as a solvent.

Embodiment 2

[0020] (1) 213g P 2 O 5 Put it in 426g methyl methacrylate and stir it evenly as a phosphorylation reagent; (2) Add 7.1g p-hydroxyanisole and 468g hydroxyethyl methacrylate into a 1500mL four-neck flask equipped with a stirrer and a thermometer , Placed at 0~8 o In the ice water bath of C, under high-speed stirring, slowly disperse the above-mentioned P well dispersed with methyl methacrylate 2 O 5 Put in 5 times, keep the temperature at 8~45 o C, the temperature rises to 70 quickly after feeding o C, heat preservation and esterification for 4 hours, add 34g deionized water and heat to 85 o C, heat preservation for 2 hours to obtain a brown-yellow liquid that is a phosphate functional monomer solution with methyl methacrylate as a solvent.

Embodiment 3

[0022] (1) Add 142g P 2 O 5 Put it in 426g ethyl acrylate, stir evenly and use it as a phosphorylation reagent; (2) Add 5.5g hydroquinone and 260g hydroxypropyl acrylate to a 1500mL four-neck flask equipped with a stirrer and thermometer, and place it at 0~ 8 o In the ice water bath of C, under high-speed stirring, slowly disperse the above-mentioned P well dispersed with ethyl acrylate 2 O 5 Put in 3 times, keep the temperature at 8~45 o C, the temperature rises to 70 quickly after feeding o C, heat preservation and esterification for 4 hours, add 20g deionized water and heat to 85 o C, heat preservation for 1.5 hours to obtain a brown-yellow liquid that is a phosphate functional monomer solution with ethyl acrylate as 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 specifically relates to a phosphate ester functional monomer and a polycarboxylic acid water reducing agent, and a preparation method and application thereof. Background technique [0002] Polycarboxylic acid water-reducing agent has the advantages of low dosage, high water-reducing rate, good collapse retention performance, and strong molecular structure adjustment. It has become the focus of research and development of concrete water-reducing agent at home and abroad and a hot market, and has broad application prospects. , Has been widely used in key projects such as dams, bridges, tunnels, and high-speed railways. In modern concrete, polycarboxylic acid water reducer not only improves the working performance of concrete, but also improves the mechanical and durability performance of concrete. With the continuous promotion and use of polycarboxylic acid water-reducing agents, the perf...

Claims

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Application Information

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Patent Type & Authority Patents(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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