Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of coconut oil fatty acid complex ester

A technology of coconut oil fatty acid and complex ester, which is applied in chemical instruments and methods, petroleum industry, lubricating compositions, etc., can solve problems such as inability to obtain a wide viscosity range, insufficient oxidation stability, and unsatisfactory low-temperature performance. The tuning method is simple and easy to control, good thermal and oxidation stability, and good low temperature performance

Active Publication Date: 2021-07-09
海南西塔生物科技有限公司
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, most literatures have reported that vegetable oil-based ester lubricating oils are prepared by reacting fatty acids of vegetable oils with high unsaturation (such as rapeseed oil, rubber seed oil, soybean oil, palm oil, etc.) with neopentyl polyols. Not only is the oxidation stability of the oil not high enough, and the low temperature performance is not ideal, but its viscosity cannot be adjusted, and a series of green ester lubricating oil products with a wide viscosity range cannot be obtained.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of coconut oil fatty acid complex ester
  • Preparation method of coconut oil fatty acid complex ester
  • Preparation method of coconut oil fatty acid complex ester

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The invention provides a kind of preparation method of coconut oil fatty acid complex ester, comprises the following steps:

[0029] a) reacting neopentyl polyols and dibasic fatty acids for the first time under the action of a solid catalyst to obtain oligomers;

[0030] b) reacting the oligomer obtained in step a) and coconut oil fatty acid for a second time under the action of a silica gel-supported catalyst to obtain a coconut oil fatty acid complex ester.

[0031] In the invention, neopentyl polyol and dibasic fatty acid are reacted for the first time under the action of solid catalyst to obtain oligomer.

[0032] In the present invention, the neopentyl polyol is preferably selected from neopentyl glycol, 2-methyl-2-ethyl-1,3-propanediol, 2,2-diethyl-1,3-propanediol, One or more of 2-methyl-2-propyl-1,3-propanediol, trimethylolethane and trimethylolpropane, more preferably 2-methyl-2-ethyl-1 ,3-propanediol. The present invention has no special limitation on the so...

Embodiment 1

[0083] (1) Take 35.5g (0.3mol) of 2-methyl-2-ethyl-1,3-propanediol, 14.6g (0.1mol) of adipic acid and 20mL of toluene into a 250mL three-necked flask, stir to dissolve with slight heat , then add 2.5g solid catalyst Al 2 (SO 4 ) 3 / Ti(SO 4 ) 2 , heated and stirred in an oil bath at 130°C, refluxed for water separation for 4.0h, filtered to separate the catalyst, and the filtrate was saturated with Na 2 CO 3 After washing with aqueous solution, wash with deionized water until pH ≈ 7. The oil layer was evaporated under reduced pressure at 60°C / 0.09 MPa to obtain oligomers (m=1.1) without the smell of toluene.

[0084] (2) Take 34.0g of the oligomer produced in step (1), 82.6g of coconut oil fatty acid, and 50mL of water-carrying agent toluene and add them to a 300mL three-necked flask, stir evenly, and then add 4.7g of silica gel to carry Al 2 (SO 4 ) 3 / Ti(SO 4 ) 2 Catalyst, heated and stirred in an oil bath at 130°C, refluxed and separated from water for 5.0h, then f...

Embodiment 2

[0086] (1) Take 23.6g (0.2mol) of 2-methyl-2-ethyl-1,3-propanediol, 14.6g (0.1mol) of adipic acid and 20mL of toluene into a 250mL three-necked flask, and stir to dissolve , then add 1.9g solid catalyst Al 2 (SO 4 ) 3 / Ti(SO 4 ) 2 , heated and stirred in an oil bath at 130°C, refluxed for water separation for 4.0h, filtered to separate the catalyst, and the filtrate was saturated with Na 2 CO 3 After washing with aqueous solution, wash with deionized water until pH ≈ 7. The oil layer was evaporated under reduced pressure at 60°C / 0.09 MPa to obtain oligomers (m=2.1) without the smell of toluene.

[0087] (2) Take 55.5g of the oligomer produced in step (1), 82.6g of coconut oil fatty acid, and 60mL of water-carrying agent toluene and add them to a 400mL three-necked flask, stir evenly, and then add 5.5g of silica gel to carry Al 2 (SO 4 ) 3 / Ti(SO 4 ) 2 Catalyst, heated and stirred in an oil bath at 130°C, refluxed and separated from water for 5.0h, then filtered to se...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
acid valueaaaaaaaaaa
acid valueaaaaaaaaaa
acid valueaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of coconut oil fatty acid complex ester. The method comprises the following steps: a) carrying out first reaction on neopentyl polyol and binary fatty acid under the action of a solid catalyst to obtain an oligomer; and b) carrying out a second reaction on the oligomer obtained in the step a) and coconut oil fatty acid under the action of a silica gel immobilized catalyst to obtain the coconut oil fatty acid complex ester. Compared with the prior art, the preparation method provided by the invention takes neopentyl polyol, binary fatty acid and coconut oil fatty acid as reaction raw materials, selects a specific catalyst, and adopts specific steps and conditions to introduce a coconut oil fatty acid group into a molecular structure of neopentyl polyol complex ester; the obtained coconut oil fatty acid complex ester has the characteristic of small solubility in low-level fatty alcohol, is easy to separate and purify, and is high in yield; and more importantly, the viscosity of the complex ester can be modulated by the preparation method, so that the coconut oil fatty acid complex ester with a wide viscosity range is obtained.

Description

technical field [0001] The invention relates to the technical field of ester compounds, in particular to a preparation method of coconut oil fatty acid complex ester. Background technique [0002] The degradation rate of traditional mineral lubricating oil in the biosphere is only 10-33%, and it is easy to accumulate in large quantities in the environment, polluting soil and groundwater for more than 100 years. However, ester lubricating oil is not only easy to biodegrade, but also has good low-temperature fluidity, which has better lubricating performance than mineral lubricating oil of the same viscosity, and belongs to environment-friendly lubricating oil. Vegetable oil-based ester lubricating oil (Vegetable oil-based esters) not only retains the easy biodegradability of ester lubricating oil, but also vegetable oil can be naturally regenerated, which belongs to renewable green lubricating oil. With the depletion of petroleum resources, the "post-petroleum era" will come...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10M105/42B01J27/053C10N30/08
CPCC10M105/42B01J27/053C10M2207/301
Inventor 何节玉
Owner 海南西塔生物科技有限公司