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A kind of high molecular weight unsaturated polyether macromonomer and its preparation method and application

A polyether macromonomer and high molecular weight technology, applied in the field of polyether macromonomers, can solve the problems of limited transportation distance, increased transportation costs, and increased production costs, and achieve low production costs, controllable molecular structure, and high double bond retention rate effect

Active Publication Date: 2018-09-21
联泓(江苏)新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this approach also increases the production cost, and the transportation fee is greatly increased, so the transportation distance is very limited.
Therefore, this method only partially solves the problem in a small area

Method used

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  • A kind of high molecular weight unsaturated polyether macromonomer and its preparation method and application
  • A kind of high molecular weight unsaturated polyether macromonomer and its preparation method and application
  • A kind of high molecular weight unsaturated polyether macromonomer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] After adding 230 parts of allylamine to the reaction kettle at room temperature, add 1 part of potassium hydroxide solid to the reaction kettle, pass in nitrogen to replace the air in the reaction kettle, and then heat the reaction kettle to 70 °C, vacuumize to obtain the reaction starter with catalyst under vacuum conditions. When the material in the reactor was heated to 70°C, 1408 parts of ethylene oxide (EO) was slowly and continuously added to the reactor for polymerization reaction, and the reaction temperature was controlled at about 80°C to maintain a relatively stable pressure in the reactor. Until all ethylene oxide (EO) is added into the reactor, the aging reaction is carried out at a constant temperature of 80° C. for 60 minutes. When the pressure of the reactor no longer drops, the material is discharged to obtain a polyether intermediate.

[0054] Add 200 parts of intermediates to the high-pressure reactor, and then add 2 parts of potassium hydroxide soli...

Embodiment 2

[0056] After adding 300 parts of 2-methallyl alcohol to the reactor at room temperature, add 1 part of potassium hydroxide solid to the reactor, feed nitrogen into the reactor to replace the air, and then, under stirring conditions, The reaction kettle was heated to 90° C., and vacuumized to obtain a reaction starter with a catalyst under vacuum conditions. When the materials in the reactor were heated to 90°C, the mixture of ethylene oxide (EO) and butylene oxide (BO) was slowly introduced into the reactor (mass ratio butylene oxide (BO): ethylene oxide (EO)=21.5:100), the amount of feeding is 1804 parts to carry out the polymerization reaction, the reaction temperature is controlled to be about 100°C, and the pressure in the kettle is kept relatively stable. Until the mixture of ethylene oxide (EO) and butylene oxide (BO) is completely added into the reactor, the aging reaction is carried out at a constant temperature of 100° C. for 60 minutes. When the pressure of the reac...

Embodiment 3

[0059] After adding 280 parts of 2-methallyl alcohol into the reaction kettle at room temperature, add 1 part of sodium methoxide solid into the reaction kettle, pass in nitrogen to replace the air in the reaction kettle, and vacuumize to obtain Catalyst reaction starter. Start the heating, and when the materials in the reactor are heated to 95°C, start to slowly feed the mixture of ethylene oxide (EO) and propylene oxide (PO) into the reactor (mass ratio propylene oxide (PO): ethylene oxide Alkane (EO)=21.5:100), the feed rate is 1300 parts to carry out the polymerization reaction, the reaction temperature is controlled to be about 100°C, and the pressure in the kettle is kept relatively stable. Until the mixture of propylene oxide (PO) and ethylene oxide (EO) is completely added into the reactor, the aging reaction is carried out at a constant temperature of 100° C. for 60 minutes. When the pressure of the reactor no longer drops, the temperature is lowered to 80° C., and t...

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Abstract

The invention provides a high molecular weight unsaturated polyether macromonomer which is characterized in that the polyether macromonomer is at a liquid state at normal temperature, and the structural formula (I) thereof is expressed in the specification, wherein R<1> is same or different, and represents a hydrogen atom or alkyl with 1-20 carbon atoms; R<2> represents alkyl with 1-20 carbon atoms; R<3> represents alkyl or carbonyl with 1-10 carbon atoms; R<5> represents a hydrogen atom or alkyl with 1-20 carbon atoms; R<4>O is different, and represents oxyalkenyl with 2-18 carbon atoms; n represents the average addition mole number of the oxyalkenyl, and 5<=n<=300; and X, Y and Z are same or different, and represent -N, -O or H. By optimally designing the molecular structure, the high molecular weight unsaturated polyether macromonomer provided by the invention ensures the liquid state thereof at normal temperature while the molecular polymerization reaction activity is ensured. Besides, a preparation method of the high molecular weight unsaturated polyether macromonomer provided by the invention is simple, and the conditions are easy to control; and the product does not need slicing post-treatment, the production cost is low, and the economic benefits are increased.

Description

technical field [0001] The invention relates to a polyether macromonomer, in particular to a high-molecular-weight unsaturated polyether macromonomer, its preparation method and its application in the synthesis of high molecular polymers used in industry. Background technique [0002] In recent years, the research and production of concrete admixtures have tended to develop in the direction of high performance and pollution-free. Concrete water reducer is the most widely used and most widely used concrete admixture. The polycarboxylate high-efficiency water reducer with comb-shaped molecular structure is suitable for the preparation of high-strength and ultra-high-strength concrete because of its high water-reducing rate, good slump retention performance, low dosage, no pollution, less retarding time, and low cost. , high fluidity and self-compacting concrete has become a hot spot in the research and development of concrete admixtures at home and abroad. Polycarboxylate Su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/26C08G65/28C08F283/06C04B24/26C04B103/30
Inventor 李方朱军成
Owner 联泓(江苏)新材料研究院有限公司
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