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Method for preparing hybrid non-isocyanate polyurethane by carbon dioxide

A non-isocyanate and carbon dioxide technology is applied in the field of preparing hybrid non-isocyanate polyurethane, which can solve the problems of unsatisfactory mechanical properties of NIPU, and achieve the effects of improving comprehensive mechanical properties and simple preparation process.

Active Publication Date: 2016-10-12
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem at present is that the mechanical properties of NIPU synthesized by the above method are not satisfactory, and there is a big gap compared with traditional polyurethane

Method used

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  • Method for preparing hybrid non-isocyanate polyurethane by carbon dioxide
  • Method for preparing hybrid non-isocyanate polyurethane by carbon dioxide
  • Method for preparing hybrid non-isocyanate polyurethane by carbon dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step 1 adds epoxidized soybean oil (ESBO) 100g in 0.5L autoclave, dimethylformamide 30g, macroporous resin supports tetrabutylammonium bromide catalyst 15g, opens stirring device with 0.5MPa CO 2 Replace the air in the kettle for 5 times, then start heating to 130°C, react for 50 hours, and keep the CO in the kettle 2 The pressure is 1.0MPa until the end of the reaction, and then the temperature is lowered to empty the unreacted CO 2 Gas, discharge. After the reaction, the feed liquid was filtered to separate the catalyst. The filtrate was distilled under reduced pressure at 70-110°C, and the solvent dimethylformamide was removed to obtain a light yellow transparent liquid cyclocarbonate (CSBO-1#) product. Sample analysis showed that the conversion rate of ESBO was 59.8%.

[0044] Step 2 adds bisphenol A epoxy resin (E54) 100g in 0.5L autoclave, dimethylformamide 100g, macroporous resin supports tetrabutylammonium bromide catalyst 15g, opens stirring device with 0.5MP...

Embodiment 2

[0048] Step 1 adds epoxidized soybean oil (ESBO) 100g in 0.5L autoclave, dimethylacetamide 50g, macroporous resin supports tetramethylammonium iodide catalyst 10g, opens stirring device with 0.5MPa CO 2 Replace the air in the kettle 5 times, then start heating to 160°C, react for 40 hours, and keep the CO in the kettle 2 The pressure is 2.0MPa until the end of the reaction, and then the unreacted CO is evacuated by cooling down 2 Gas, discharge. After the reaction, the feed liquid was filtered to separate the catalyst. The filtrate was distilled under reduced pressure at 70-110° C., and the solvent dimethylacetamide was removed to obtain a light yellow transparent liquid cyclocarbonate (CSBO-2#) product. Sample analysis showed that the conversion rate of ESBO was 100%.

[0049] Step 2 adds epoxy resin (E54) 100g in 0.5L autoclave, dimethylacetamide 50g, macroporous resin supports tetramethylammonium iodide catalyst 10g, opens stirring device with 0.5MPa CO 2 Replace the air...

Embodiment 3

[0053] Step 1 adds epoxidized soybean oil (ESBO) 100g in 0.5L autoclave, dimethyl sulfoxide 100g, macroporous resin supports tetrabutylammonium bromide catalyst 5g, opens stirring device with 0.5MPa CO 2 Replace the air in the kettle for 5 times, then start heating to 150°C, react for 40 hours, and keep the CO in the kettle 2 The pressure is 3.0MPa until the end of the reaction, and then the unreacted CO is evacuated by cooling down 2 Gas, discharge. After the reaction, the feed liquid was filtered to separate the catalyst. The filtrate was distilled under reduced pressure at 70-110° C., and the solvent dimethyl sulfoxide was removed to obtain a light yellow transparent liquid cyclocarbonate (CSBO-3#) product. Sample analysis showed that the conversion rate of ESBO was 96.8%.

[0054] Step 2 adds epoxy resin (E54) 100g in 0.5L autoclave, dimethyl sulfoxide 30g, macroporous resin supports tetrabutylammonium bromide catalyst 5g, opens stirring device with 0.5MPa CO 2 Replace ...

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Abstract

The invention discloses a method for preparing hybrid non-isocyanate polyurethane by carbon dioxide, including the following steps: first, synthesizing soybean oil based pentabasic cyclic carbonate through reaction of the carbon dioxide and epoxidized soybean oil; second, synthesizing bisphenol A-type cyclic carbonate through reaction of the carbon dioxide and bisphenol A diglycidyl ether; third, synthesizing the hybrid non-isocyanate polyurethane through reaction of the synthesized cyclic carbonates and amine. The method has the advantages of fine comprehensive mechanical properties and simplicity in preparation.

Description

technical field [0001] The invention belongs to a method for preparing hybrid non-isocyanate polyurethane (HNIPU) starting from carbon dioxide. technical background [0002] Polyurethane (PU) material is a polymer material with a wide range of uses. Isocyanate, the main raw material for polyurethane synthesis by traditional methods, is a highly toxic substance that is harmful to health and the environment, and the phosgene used to prepare isocyanate is more toxic. Therefore, the isocyanate route used in traditional polyurethane production has greater potential danger. [0003] In recent years, the production of non-isocyanate polyurethane (NIPU) with great industrialization prospects has aroused great interest. Suzuki et al. used a composite catalyst, CO2 and EP (epoxy resin) to react at 100 ° C to obtain a high-conversion end-ring Carbonate oligomers were added with diamine and reacted in a strong polar solvent for 24 hours to prepare NIPU with a relative molecular mass of...

Claims

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Application Information

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IPC IPC(8): C08G71/04
CPCC08G71/04
Inventor 冯月兰王军威亢茂青梁宏光张清运赵雨花殷宁李其峰
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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