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High-functionality mixed polyol initiator and preparation method thereof

A mixed polyol, high-functionality technology, applied in the field of high-functionality mixed polyol starter and its preparation, can solve problems that have not yet been discovered, and achieve the effect of increasing the value of resources

Inactive Publication Date: 2019-07-26
广州市友聚米新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The applicant has not yet found waste oil that meets the requirements of hard foam on the high-functionality polyol starter

Method used

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  • High-functionality mixed polyol initiator and preparation method thereof
  • High-functionality mixed polyol initiator and preparation method thereof
  • High-functionality mixed polyol initiator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Take 500g of epoxy fatty acid oil mixture, 150g of glycerin, and 12g of sodium methoxide catalyst into a 1L stirring reaction device, evacuate and replace with nitrogen for 3 times, close the valve and stir to raise the temperature to 138°C, set the pressure to 0.2MPa, and react for 10 hours.

[0036] After cooling down to 130°C, add 40g of sorbitan, then raise the temperature to 200°C, set the pressure to 0.2MPa, and react for 4 hours; Functionality mixed polyol, yield 99.8%, hydroxyl value 510mgKOH / g, water 0.2%, average functionality 5.5.

[0037] In the gained polyol initiator, the content of each material is: hydroxy fatty acid monoester 25.6%, hydroxy fatty acid diglyceride 50.2%, hydroxy fatty acid glyceride 13.8%, sorbitol fatty acid monoglyceride 7.2%, sorbitol 0.2%, Glycerin 0.6%, epoxy fatty acid oil 0.2%, water 0.2%, impurities and by-products 2%.

Embodiment 2

[0039] Take 400g of epoxy fatty acid oil mixture, 180g of glycerin, and 7g of sodium ethoxide catalyst into a 1L stirring reaction device, evacuate nitrogen for 3 times, close the valve and stir to raise the temperature to 250°C, set the pressure to 0.25MPa, and react for 3 hours.

[0040]After cooling down to 140°C, add 15g of sorbitan, then raise the temperature to 235°C, set the pressure to 0.2MPa, and react for 6 hours; Functionality mixed polyol, yield 99.76%, hydroxyl value 565mgKOH / g, water 0.1%, average functionality 5.4.

[0041] In the gained polyol initiator, the content of each material is: hydroxy fatty acid monoester 28.3%, hydroxy fatty acid diglyceride 54.9%, hydroxy fatty acid glyceride 10%, sorbitol fatty acid monoglyceride 3.8%, sorbitol 0.5%, Glycerin 0.6%, water 0.1%, impurities and by-products 1.8%.

Embodiment 3

[0043] Add 400g of epoxy fatty acid oil, 140g of glycerol, and 10.8g of sodium methoxide catalyst into a 1L stirring reaction device, evacuate and replace with nitrogen for 3 times, close the valve and stir to raise the temperature to 165°C, set the pressure to 0.2MPa, and react for 5 hours.

[0044] After cooling down to 142°C, add 50g of sorbitan, then raise the temperature to 182°C, set the pressure to 0.2MPa, and react for 10 hours; after the reaction, vacuumize to remove moisture and other small molecular impurities, and filter out solid insoluble matter, with a yield of 99.64 %, hydroxyl value 558mgKOH / g, water 0.2%, average functionality 5.8.

[0045] In the gained polyol initiator, the content of each material is: hydroxy fatty acid monoester 28.3%, hydroxy fatty acid diglyceride 44.8%, hydroxy fatty acid glyceride 13.4%, sorbitol fatty acid monoglyceride 6.5%, sorbitol 2.7%, Glycerin 1.3%, epoxy fatty acid oil 0.3%, water 0.2%, impurities and by-products 2.5%.

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Abstract

The invention relates to a high-functionality mixed polyol initiator and a preparation method thereof. The initiator is a composition of two or three of hydroxy fatty acid monoglyceride, hydroxy fattyacid diglyceride and hydroxy fatty acid triglyceride. Further, the initiator comprises, by weight, 25-50 parts of hydroxy fatty acid monoglyceride, 30-60 parts of hydroxy fatty acid diglyceride and 5-15 parts of hydroxy fatty acid triglyceride. The preparation method includes the steps: (1) adding epoxy fatty acid grease and glycerol with the weight ratio of 1:(0.2-0.6) in nitrogen or inert gas shielding atmosphere, and performing reaction under the action of base catalysis at the temperature 130-250 DEG C under the pressure of 0.1-0.3MPa for 3-15 hours; (2) removing water and other small molecular weight impurities in a vacuum-pumping manner, and filtering solid insoluble substances to obtain the initiator. The initiator is applied to rigid polyurethane foam polyether polyols, the strength of rigid foam products can be improved, and shrinkage in the production process is decreased.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, and in particular relates to several high-functionality mixed polyol initiators and a preparation method thereof. Background technique [0002] According to China National Petroleum Corporation's "2017 Domestic and Foreign Oil and Gas Industry Development Report", my country's apparent oil consumption has reached 590 million tons, and the growth rate of consumption has reached a new high in nearly six years. Oil imports and foreign dependence both hit record highs. The annual crude oil imports were 396 million tons, and the foreign dependence reached 67.4%. Once the international crude oil fluctuates sharply, it will have a major impact on the domestic economy. [0003] Waste oil can damage the mucous membrane of people's digestive tract, cause food poisoning, and even cause serious consequences of cancer. [0004] Promoting the resource utilization of gutter oil, turning waste into treasure an...

Claims

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Application Information

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IPC IPC(8): C08G18/36
CPCC08G18/36
Inventor 李志生刘莎
Owner 广州市友聚米新材料有限公司
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