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Synthesizing method of high-performance water reducing agent

A synthesis method and technology of water reducing agent, applied in the field of water reducing agent synthesis, can solve the problems of easy volatilization, difficulty in controlling the reaction process, and low production efficiency, so as to reduce production costs, lower container requirements, and ensure working environment safe effect

Inactive Publication Date: 2013-10-23
安徽森普新型材料发展有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] The synthesis method of the water reducing agent in the prior art has high requirements for the control of the environment and temperature, and the temperature of the environment changes to a certain extent during the synthesis process in summer and winter, and a large amount of formaldehyde needs to be used in the reaction process, which is extremely It is easy to be volatile, the reaction process is difficult to control, and the production efficiency is low

Method used

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Embodiment Construction

[0018] The technical solutions of the present invention are described below to facilitate the understanding of those skilled in the art.

[0019] A kind of synthetic method of high-performance water reducing agent, carry out according to the following steps:

[0020] First, pour 174 grams of water into a 1-liter flask, add 355 grams of methallyl polyoxyethylene ether into the flask, raise the temperature to 60°C and stir thoroughly, until the methallyl polyoxyethylene ether is solid Dissolve completely to obtain a solution;

[0021] Next, add liquid C to the solution in the above-mentioned flask, and immediately add liquid A and liquid B dropwise. After the dropwise addition is completed, place the entire flask in an environment of 60° C. for 1 hour;

[0022] Again, lower the temperature of the above-mentioned insulated flask and the solution in it to 40°C, add alkali to neutralize the sesame cake, and after the solution is neutralized, add 303 grams of water to the flask to ...

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Abstract

The invention relates to the technical field of water reducing agent synthesis, and specifically relates to a synthesis method of a high-performance water reducing agent. The method comprises the steps that: 150-200g of water is added into a 1L flask; 330-370g of methylallyl polyoxyethylene ether is added into the flask; the temperature is increased to 60 DEG C, and sufficient stirring is carried out; when methylallyl polyoxyethylene ether solid is completely dissolved, a solution is obtained; liquid C is added into the solution in the flask; liquid A and liquid B are instantly dropped into the flask; when dropping is finished, the entire flask is subjected to temperature maintaining for 1h in an environment with a temperature of 58-65 DEG C; the temperature of the flask and the solution is reduced to 35-45 DEG C; alkali is added into the flask for neutralization; and when the solution is neutralized, a proper amount of water is added into the flask, such that a polycarboxylic acid water reducing agent is obtained. According to the invention, violent cooling, heating or temperature-maintaining are not needed during the reaction process, and the reaction process is fast and simple.

Description

technical field [0001] The invention relates to the technical field of water reducers, and more specifically relates to a method for synthesizing water reducers. technical background [0002] The synthesis method of the water reducing agent in the prior art has high requirements for the control of the environment and temperature, and the temperature of the environment changes to a certain extent during the synthesis process in summer and winter, and a large amount of formaldehyde needs to be used in the reaction process, which is extremely It is easy to be volatile, the reaction process is difficult to control, and the production efficiency is low. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for synthesizing a water reducer with simple operation and easy controllable reaction process. [0004] In order to solve the above-mentioned technical problems, the present invention provides a method for synth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F220/06C08F214/06C04B24/26C04B103/30
Inventor 张家如傅曹辉
Owner 安徽森普新型材料发展有限公司
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