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Preparation method of poly(carbonate-ester)polyol

A polyol, carbonate technology, applied in the field of polyol preparation, can solve problems such as inapplicability

Active Publication Date: 2016-05-04
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, poly(carbonate-ether) polyols degrade rapidly in the presence of KOH, so this method is not suitable for capping poly(carbonate-ether) polyols

Method used

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  • Preparation method of poly(carbonate-ester)polyol

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preparation example Construction

[0024] The embodiment of the present invention discloses a kind of preparation method of poly(carbonate-ether) polyol, comprising the following steps:

[0025] Based on Zn doped with rare earth 3 [Co(CN) 6 ] 2 Under the effect of the catalyzer of double metal cyanide and chain transfer agent, propylene oxide and carbon dioxide are carried out copolymerization reaction, obtain the first poly (carbonate-ether) polyol;

[0026] The first poly(carbonate-ether) polyol, ethylene oxide and propylene oxide are mixed and capped to obtain poly(carbonate-ether) polyol.

[0027] In this application, propylene oxide and carbon dioxide are based on Zn doped with rare earth 3 [Co(CN) 6 ] 2 Under the action of a double metal cyanide (DMC) catalyst and a chain transfer agent, a copolymerization reaction occurs to obtain a poly(carbonate-ether) polyol, and then propylene oxide and ethylene oxide are added thereto to carry out polyaddition capping, A poly(carbonate-ether) polyol is obtaine...

Embodiment 1

[0051] Evacuate the weighing bottle at 80°C and fill it with CO 2 Gas treatment 2h (inflated 6 times), and cooled to room temperature; 2 Add 10.0mg of DMC catalyst and 1.15g of sebacic acid chain transfer agent to the weighing bottle under the protection of gas to obtain a mixture; put the 500ml reaction kettle at 80°C and fill it with CO 2 Treat for 2h (inflate 6 times), and cool to room temperature, add the mixture in the reaction kettle, then add 10ml propylene oxide to the kettle through the connection of the catalyst weighing bottle, stir at a speed of 500rpm, and pass through the pressure of carbon dioxide The regulator feeds carbon dioxide into the kettle, puts the reaction kettle into a constant temperature bath to carry out polymerization reaction, the pressure of carbon dioxide in the polymerization reaction is 4.0Mpa, the temperature of the polymerization reaction is 80°C, and the time of the polymerization reaction is 2h.

[0052] After the polymerization reaction...

Embodiment 2

[0055] Evacuate the weighing bottle at 80°C and fill it with CO 2 Gas treatment 2h (inflated 6 times), and cooled to room temperature; 2 Add 5.0mg of DMC catalyst and 1.0g of PPG-300 chain transfer agent to the weighing bottle under the protection of gas to obtain a mixture; put the 500ml reaction kettle at 80°C and fill it with CO 2 Treat for 2h (inflate 6 times), and cool to room temperature, add the mixture in the reaction kettle, then add 10ml propylene oxide to the kettle through the connection of the catalyst weighing bottle, stir at a speed of 500rpm, and pass through the pressure of carbon dioxide The regulator feeds carbon dioxide into the kettle, puts the reaction kettle into a constant temperature bath to carry out polymerization reaction, the carbon dioxide pressure of the polymerization reaction is 2.0Mpa, the temperature of the polymerization reaction is 60°C, and the time of the polymerization reaction is 4h.

[0056] After the polymerization reaction was compl...

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Abstract

The invention provides a preparation method of poly(carbonate-ester)polyol. The preparation method includes the following steps that propylene oxide and carbon dioxide are subjected to copolymerization under the action of a rare-earth-doped double-metal cyanide catalyst based on Zn3[Co(CN)6]2 and a chain transfer agent, and first poly(carbonate-ester)polyol is obtained; first poly(carbonate-ester)polyol, ethylene oxide and propylene oxide are mixed and then capped, and poly(carbonate-ester)polyol is obtained. According to the preparation method, in the process of preparing poly(carbonate-ester)polyol, ethylene oxide and propylene oxide are adopted as a capping agent, and therefore the primary hydroxyl content in poly(carbonate-ester)polyol can be high. Experimental results show that the primary hydroxyl content in poly(carbonate-ester)polyol prepared through the preparation method is 50-90 mol%.

Description

technical field [0001] The invention relates to the technical field of polymer polyols, in particular to a preparation method of poly(carbonate-ether) polyols. Background technique [0002] Poly(carbonate-ether) polyol refers to a class of polymers containing repeated carbonate units and ether units in the main molecular chain, and the ends of the molecular chain are hydroxyl groups. Poly(carbonate-ether) polyol is similar to polyester polyol and polyether polyol. It is one of the main raw materials of polyurethane industry and is widely used in the manufacture of automotive interior parts, train and ship trim parts, medical equipment, home appliances, and furniture. , fabric linings, coatings, shoes, leather and paste and other fields. Compared with polyurethanes synthesized from polyester polyols and polyether polyols, poly(carbonate-ether) polyurethanes prepared from poly(carbonate-ether) polyols have better heat resistance, water resistance, antibacterial properties, O...

Claims

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Application Information

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IPC IPC(8): C08G64/34C08G64/42C08G65/26
CPCC08G64/34C08G64/42C08G65/2603
Inventor 付双滨秦玉升王献红周庆海乔立军王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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