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Preparation of dode-fatty amine polyethenoxy ether

A technology of aliphatic amine polyoxyethylene ether and aliphatic amine, which is applied in chemical instruments and methods, transportation and packaging, dissolution, etc., can solve the problems of incomplete and thorough reaction, small polymerization reaction space, long reaction time, etc., and achieve excellent Thixotropic and dispersive properties, good chemical stability of the product, and thorough polymerization

Inactive Publication Date: 2006-04-26
HAREON SOLAR TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the polymerization reaction of dodecyl fatty amine and ethylene oxide is carried out inside the material, the polymerization reaction space is small, the polymerization reaction is greatly affected by the material, and the reaction cannot be complete and thorough.
And the reaction time is longer, and the quality of the finished product is poor
After the aliphatic amine polyoxyethylene ether prepared by this method is compounded with other surfactants, a lot of flocs will be produced, and the compatibility and stability are poor.

Method used

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  • Preparation of dode-fatty amine polyethenoxy ether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The first step, add 480kg of dodecyl aliphatic amine in the 2000L spray reaction kettle, heat up to 170°C while vacuuming, the pressure in the kettle is 0.3Mpa, and the dodecaliphatic amine in the kettle is sucked out from the suction port at the bottom of the reactor and then by the reactor. The upper spray feeder was added, and ethylene oxide was added by spraying at the same time, so circulating, the reaction time was 1.5 hours, and the amount of ethylene oxide added was 120 kg, and the reaction was maintained for 30 minutes after finishing, and cooled to 95 ℃;

[0014] The second step, vacuumize in the above-mentioned still, inhale 4kg of catalyst potassium hydroxide, heat up to 125 ℃, keep warm for more than 30 minutes, replace the air in the still with nitrogen three times in a row and remove all the air, be warmed to 165 ℃, in the still The material is sucked out from the suction port at the lower part of the reaction kettle and then added by the spray feeder at t...

Embodiment 2

[0016] The first step, add 480kg of dodecyl aliphatic amine in the 2000L spray reaction kettle, heat up to 180°C while vacuuming, the pressure in the kettle is 0.2Mpa, and the dodeca-fatty amine in the kettle is sucked out from the suction port at the lower part of the reactor and then by the reactor. The upper spray feeder is added, and ethylene oxide is added by spraying at the same time, and the cycle is performed in this way, the reaction time is 0.8 to 1 hour, and the amount of ethylene oxide added is 180 kg, and the reaction is maintained for 40 minutes after finishing, and cooled to 100 ℃;

[0017] Second step, vacuumize in above-mentioned still, inhale catalyzer potassium hydroxide 4kg, be warming up to 130 ℃, be incubated for 40 minutes, replace the air in the kettle with nitrogen for four consecutive times and remove all the air, be warming up to 170 ℃, in the kettle The material is sucked out from the suction port at the lower part of the reaction kettle and then add...

Embodiment 3

[0019] The first step, add 480kg of dodecyl aliphatic amine in the 2000L spray reaction kettle, heat up to 175°C while vacuuming, the pressure in the kettle is 0.25Mpa, and the dodeca fatty amine in the kettle is sucked out from the suction port at the lower part of the reactor and then by the reactor. The upper spray feeder is added, and ethylene oxide is added by spraying at the same time, so circulate, the reaction time is 1 to 1.2 hours, and the amount of ethylene oxide added is 160 kg, and the reaction is kept for 35 minutes after finishing, and cooled to 90 ° C;

[0020] Second step, vacuumize in the above-mentioned still, inhale 4kg of catalyst potassium hydroxide, be warming up to 130 ℃, be incubated for 40 minutes, replace the air in the still with nitrogen for five consecutive times and remove all the air, be warming up to 168 ℃, in the still The material is sucked out from the suction port at the lower part of the reaction kettle, and then added by the spray feeder a...

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Abstract

The invention relates to a preparation method of dodecyl fatty amine polyoxyethylene ether, which is characterized in that the reaction is carried out in two steps by spraying method: the first step is adding dodecyl fatty amine into a spray reactor, and raising the temperature while vacuuming to 170-180°C, the pressure in the kettle is 0.2-0.3Mpa, the material is sucked out from the kettle and then sprayed into it, and ethylene oxide is added by spraying, and this cycle is repeated, reacting for 0.8-1.5 hours, keeping warm for more than 30 minutes, and cooling to 90-100°C , the amount of ethylene oxide added accounts for 10-15% of the total amount added; in the second step, the inside of the kettle is evacuated, potassium hydroxide is sucked, and the temperature is raised to 100-130 ° C, kept for more than 30 minutes, and replaced with nitrogen The air in the kettle is heated up to 165-170°C, the material is sucked out from the kettle and then sprayed in, and the remaining ethylene oxide is sprayed in at the same time, and this cycle is repeated. The reaction is 2.5-3 hours, the heat preservation is more than 30 minutes, and the material is cooled and discharged. The invention has the advantages of thorough reaction, short reaction time and good compounding compatibility.

Description

Technical field: [0001] The present invention relates to a preparation method of dodecyl amine polyoxyethylene ether. It is widely used in chemical production as emulsifier. It belongs to the technical field of chemical additives. Background technique: [0002] At present, the preparation method of dodecyl aliphatic amine polyoxyethylene ether is a stirring method: it is prepared by polymerization reaction of dodeca aliphatic amine and ethylene oxide in a stirring reaction kettle, and the catalyst is potassium hydroxide. The polymerization reaction of dodecyl aliphatic amine and ethylene oxide in this method is carried out inside the material, the polymerization reaction space is small, the polymerization reaction is greatly affected by the material, and the reaction cannot be completely and completely. And the reaction time is long, and the quality of the finished product is poor. After the fatty amine polyoxyethylene ether prepared by this method is compounded with othe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/26B01F17/42C09K23/42
Inventor 吴金海吴云清沈君华顾冬伟
Owner HAREON SOLAR TECHNOLOGY CO LTD