PH | 6.9~7.0 |
Physical and Chemical Properties | The chemical quality product is a dark yellow liquid. Relative density 1.042, cloud point 0.31 ℃,HLB value 9.8. |
Use | It can be used as finishing agent for polyester fabric, which can improve the water absorption and antistatic property of fabric. And the fabric treated with this product is easy to wash after staining. |
It is irritating and should not come into direct contact with the skin. Place in a cool and ventilated warehouse, do not store with flammable materials, and keep away from ignition sources.
1. Synthesis of glycerol octanoate
Add glycerol and octanoic acid in sequence to the esterification reactor (with a molar ratio of 1:2), and then add an appropriate amount of lead tetroxide as a catalyst. Heat up to 160~180 ℃ under stirring. Continuously separate the generated water through a water separator, and when there is no water to separate, cool it down. Then, pour the material into a neutralization kettle and add Na2CO3 aqueous solution for neutralization. Inject the oil layer into a distillation kettle, decompress and dehydrate the unreacted low boiling point substance. The residue in the kettle is a mixture of glycerol monooctyl ester and glycerol dioctyl ester.
2. Synthesis of Glycerol Octyl Ester Polyoxyethylene Ether
Add octyl glycerol and potassium hydroxide with catalyst amount to the reaction kettle in sequence, close the reaction system, replace the air in the kettle with nitrogen, and heat to 105 ℃. The reaction of ethylene oxide (with a molar ratio of glycerol octyl ester to ethylene oxide of 1:4) measured under nitrogen pressure at 0.2~0.3 MPa and 150~170 ℃ for 2 hours. Reduce blood pressure, cool down, neutralize, and decolorize to obtain products.
synthesis of glycerol octanoic acid glycerol and octanoic acid are sequentially added to the esterification kettle (the molar ratio of the two is 1: 2), and then an appropriate amount of lead tetroxide is added as a catalyst. The temperature is raised to 160~180 ℃ under stirring. The generated water is continuously discharged through the water separator, and when there is no water, the temperature is cooled, the material is pumped into the neutralization kettle, and Na2CO3 aqueous solution is added for neutralization. Put the oil layer into the distillation kettle, dehydrate under reduced pressure, and remove unreacted low boiling point substances. The residue in the kettle is a mixture of glycerol monooctyl ester and glycerol dioctyl ester.
Synthesis of glycerol octyl ester polyoxyethylene ether The glycerol octyl ester and potassium hydroxide in the amount of catalyst are sequentially added to the reactor, the reaction system is closed, the air in the reactor is converted with nitrogen, and the temperature is heated to 105 ℃. The metered ethylene oxide (molar ratio of glycerol octyl ester to ethylene oxide is 1:4) is pressed with nitrogen. React at 0.2~0.3 MPa and 150~170 ℃ for 2 h. Depressurization, cooling, neutralization and decolorization products.