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Trimethylolpropane-acrylic ester-based polyester and preparation method of polyester

A technology of trimethylolpropane and acrylate, applied in the direction of base material, petroleum industry, lubricating composition, etc., can solve the problems of increasing processing cost, reducing viscosity index, application limitation of ester products, etc., and achieving excellent lubricating properties. Effect

Active Publication Date: 2012-07-25
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used ester products also have disadvantages. First, the viscosity index will decrease with the increase of the viscosity of the ester products, which will limit the application of the ester products. Second, because the lubricating materials have high requirements on the acid value, a Very low acid value, when the viscosity of ester products increases with the molecular weight, it will be very difficult to deal with the acid value of the product, which will increase the cost of treatment; Third, there are problems with the compatibility with mineral oil
Most of the high-viscosity lubricating products currently in use are PAO (poly-α-olefins). PAO can solve the acid value problem of high-viscosity lubricating products. Poor lubricity, need additives to adjust lubricity

Method used

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  • Trimethylolpropane-acrylic ester-based polyester and preparation method of polyester
  • Trimethylolpropane-acrylic ester-based polyester and preparation method of polyester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take by weighing trimethylolpropane 42.3g (content 95%) and 21.6g acrylic acid, drop in the 250ml there-necked bottle of band electric stirring, thermometer, and vacuum distillation device, add catalyzer p-toluenesulfonic acid 1g again, control reaction temperature at 60°C, negative pressure reaction, control the vacuum degree to 0.01MPa, and the reaction time is 4h, to obtain trimethylolpropane-monoacrylate;

[0024] Then add 78.2g of heptanoic acid in molar ratio to the system, control the reaction temperature at 110°C, pump negative pressure to react, control the vacuum degree to 0.01MPa, the reaction time is 4h, cool to room temperature, and obtain the mixed ester of trimethylolpropane ;

[0025] Add 2 g of activated clay and 1 g of sodium carbonate to the system, stir evenly, and then filter to remove the catalyst p-toluenesulfonic acid to obtain a clean mixed ester of trimethylolpropane-2 heptanoate-1 acrylate with low acid value.

[0026] Add 0.5 g of initiator ...

Embodiment 2

[0029] Take by weighing trimethylolpropane 42.3g (content 95%) and 21.6g acrylic acid, add in the 250ml there-necked bottle with electric stirring, thermometer, and vacuum distillation device, add catalyst p-toluenesulfonic acid 1g again, control reaction temperature at 70°C, negative pressure reaction, control the vacuum degree to 0.02MPa, and the reaction time is 6h, to obtain trimethylolpropane-monoacrylate;

[0030] Then add 78.2g of heptanoic acid in molar ratio to the system, control the reaction temperature at 135°C, pump negative pressure to react, control the vacuum degree to 0.02MPa, the reaction time is 6h, cool to room temperature, and obtain the mixed ester of trimethylolpropane ;

[0031] Add 2 g of active clay and 1 g of sodium carbonate to the system, stir evenly and remove the catalyst p-toluenesulfonic acid by filtration to obtain a mixed ester of clean trimethylolpropane-2 heptanoate-1 acrylate with low acid value;

[0032] Add 0.5g of initiator azobisisobu...

Embodiment 3

[0034] Take by weighing trimethylolpropane 42.3g (content 95%) and 21.6g acrylic acid, add in the 250ml there-necked bottle with electric stirring, thermometer, and vacuum distillation device, add catalyst p-toluenesulfonic acid 1g again, control reaction temperature at 60°C, negative pressure reaction, control the vacuum degree to 0.01MPa, and the reaction time is 6h, to obtain trimethylolpropane-monoacrylate;

[0035] Then add 86.5g of molar caprylic acid to the system, control the reaction temperature at 140°C, pump negative pressure to react, control the vacuum degree to 0.01MPa, the reaction time is 6h, cool to room temperature, and obtain the mixed acid ester of trimethylolpropane ;

[0036] Add 2 g of activated clay and 1 g of sodium carbonate to the system, stir evenly and remove the catalyst p-toluenesulfonic acid by filtration to obtain a mixed ester of clean trimethylolpropane-2 caprylate-1 acrylate with low acid value;

[0037] Add 0.5 g of initiator azobisisobuty...

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Abstract

The invention relates to trimethylolpropane-acrylic ester-based polyester and a preparation method of the trimethylolpropane-acrylic ester-based polyester. The method comprises the steps of taking trimethylolpropane, acrylic ester and aliphatic monocarboxylic acid as raw materials, synthesizing trimethylolpropane-acrylic ester containing mono-aliphatic ester, and conducting polymerization reaction to form the polyester. The polyester obtained by the method has good lubricating performance and can be taken as lubrication base oil for use.

Description

technical field [0001] The invention relates to a polyester based on trimethylolpropane-acrylate and a preparation method thereof. Background technique [0002] Compared with mineral oil, esters have good biodegradability, wider liquid range, higher viscosity index, excellent viscosity-temperature characteristics and low-temperature performance, so they are widely used as lubricating oils. The physical and chemical properties of ester lubricating oils are closely related to their structural composition. At present, diesters and polyol esters are the most widely used. These esters show extremely superior viscosity-temperature characteristics and low-temperature performance. However, the currently used ester products also have disadvantages. First, the viscosity index will decrease with the increase of the viscosity of the ester products, which will limit the application of the ester products. Second, because the lubricating materials have high requirements on the acid value, ...

Claims

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Application Information

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IPC IPC(8): C08F122/14C10M107/28
Inventor 吾满江・艾力蔡国星张乐涛马莉古丽米热・吐尔地
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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