Unsaturated amino polyoxyethylene ether and polycarboxylate superplasticizer as well as synthesis method and application thereof

A technology of amino polyoxyethylene ether and polyoxyethylene ether, which is applied in the field of building material admixtures and can solve problems such as poor product stability and complex production process.

Active Publication Date: 2021-04-09
SHANXI SUNWAY INTION TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are problems such as complex production process and poor product stability in the above process

Method used

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  • Unsaturated amino polyoxyethylene ether and polycarboxylate superplasticizer as well as synthesis method and application thereof
  • Unsaturated amino polyoxyethylene ether and polycarboxylate superplasticizer as well as synthesis method and application thereof
  • Unsaturated amino polyoxyethylene ether and polycarboxylate superplasticizer as well as synthesis method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] (1) Heat and melt 1000 g of HPEG with a molecular weight of 2000, vacuum dehydrate at 120° C. for 2 hours, and cool to 60° C. to obtain molten unsaturated polyoxyethylene ether;

[0081] (2) Add 111.2g of isophorone diisocyanate to the molten unsaturated polyoxyethylene ether obtained in step (1) according to a molar ratio of 1:1, take HPEG as a benchmark, add 0.05% by weight of dibutyltin dilaurate, heat up to 75°C, react for 2 hours, measure the NCO content to the theoretical value, the theoretical value is 1.89% by weight, and then cool down to room temperature;

[0082] (3) The reaction product obtained in step (2) was added dropwise to 85.2 g of isophorone diamine, and after the dropwise addition was completed, the reaction was continued for 1 h to obtain unsaturated amino polyoxyethylene ether.

Embodiment 2

[0084] Example 2 is basically the same as Example 1, except that HPEG is replaced by isopentenol polyoxyethylene ether (TPEG, molecular weight 2400), and isophoronediamine is replaced by diphenylmethanediamine , replacing isophorone diisocyanate with toluene diisocyanate, and the molar ratio of prenol polyoxyethylene ether (1200g), toluene diisocyanate, and diphenylmethanediamine is 1:1:1.2.

Embodiment 3

[0086] Example 3 is basically the same as Example 1, except that the molar ratio of HPEG (1000 g), isophorone diisocyanate, and isophorone diamine is 1:1:0.8.

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Abstract

The invention provides unsaturated amino polyoxyethylene ether and a synthesis method thereof, a polycarboxylate superplasticizer containing the unsaturated amino polyoxyethylene ether and a preparation method thereof, and application of the unsaturated amino polyoxyethylene ether and the synthesis method thereof and the polycarboxylate superplasticizer and the preparation method thereof in the field of buildings. The unsaturated amino polyoxyethylene ether is prepared from the following raw materials: unsaturated polyoxyethylene ether as shown in a formula (I), diisocyanate as shown in a formula (II), and an amino compound as shown in a formula (III) and/or a formula (IV). The polycarboxylate superplasticizer prepared from the unsaturated amino polyoxyethylene ether has better early strength and water reducing and slump retaining properties.

Description

technical field [0001] The invention relates to the field of building material admixtures, in particular to an unsaturated amino polyether and its synthesis method and application, as well as a polycarboxylate water reducer and its preparation method and application. Background technique [0002] Polycarboxylate superplasticizer was first invented in Japan. Due to its good comprehensive technical performance advantages, green environmental protection in the preparation process, and the ability to control performance through molecular design, the process of research, development, promotion and application in my country is very rapid, and it has become a concrete The mainstream products of admixtures are currently widely used in large-scale national water conservancy, bridges, nuclear power, and railway projects, and have achieved remarkable results. [0003] At present, research on the main chain of unsaturated polyether monomers of polycarboxylate water reducers focuses on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/333C08F283/06C08F220/06C08F220/56C04B24/26C04B103/30
CPCC08G65/33355C08G65/3331C08G65/33313C08G65/33358C08F283/065C04B24/2694C04B24/2647C04B2103/302C08F220/06C08F220/56Y02W30/91
Inventor 吕勇王英维王宏维
Owner SHANXI SUNWAY INTION TRADE CO LTD
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