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Poly (carbonate-ether) polyol and preparation method thereof

A carbonate and polyol technology, applied in the field of polymer preparation, can solve problems such as energy consumption increase in the purification process, and achieve the effects of improved catalyst activity, accelerated reaction, and high catalytic activity

Active Publication Date: 2022-07-29
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The presence of cyclic by-products in polyol products will affect the properties of further prepared polyurethane materials, so they must be removed during the production process, and due to the high boiling point of cyclic carbonates, the energy consumption of the purification process is greatly increased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Dissolve 332 g of potassium cobalt cyanide in 1000 mL of deionized water, and stir at 45°C for 4 h to prepare a metal cyanide complex solution S1;

[0043] (2) Dissolve 200g of zinc chloride and 0.0466g of zirconium chloride in 300ml of deionized water, and stir at 45°C for 2h to prepare solution S2;

[0044] (3) above-mentioned solution S2 is added in the autoclave, and the reactor is replaced by CO 2 , ensure that the inside of the kettle is a carbon dioxide atmosphere, pressurize to 8MPa and control the temperature in the kettle to be 40°C. The solution S1 is injected into the autoclave solution S2 at a speed of 50mL / min by the plunger pump. After the injection is completed, the reaction is stirred for 0.5h. The pressure is released, and the product is centrifuged and washed with tert-butanol to obtain a precipitated product;

[0045] (4) The above-mentioned precipitated product was vacuum-dried at 45° C. to constant weight and ground to obtain 472 g of bimetall...

Embodiment 2

[0049] (1) Dissolve 332 g of potassium cobalt cyanide in 1000 mL of deionized water, and stir at 45°C for 4 h to prepare a metal cyanide complex solution S1;

[0050] (2) Dissolve 230g of zinc nitrate and 0.177g of indium acetate in 300ml of deionized water, and stir at 45°C for 2h to prepare solution S2;

[0051] (3) above-mentioned solution S2 is added in the autoclave, and the reactor is replaced by CO 2 , ensure that the inside of the kettle is a carbon dioxide atmosphere, pressurize to 1MPa and control the temperature in the kettle to be 40 ℃, the solution S1 is injected into the autoclave solution S2 at a speed of 50mL / min by the plunger pump, and the reaction is stirred for 2h after the injection is completed, and the autoclave is vented. Pressing, the product is centrifuged and washed with tert-butanol to obtain a precipitated product;

[0052] (4) The above-mentioned precipitated product was vacuum-dried at 45° C. to constant weight, and 456 g of bimetallic catalyst ...

Embodiment 3

[0056] (1) Dissolve 329g potassium hexacyanoferrate in 1000mL deionized water, stir at 45°C for 4h, and prepare metal cyanide complex solution S1;

[0057] (2) Dissolve 220 g of zinc bromide and 0.177 g of indium acetate in 300 ml of deionized water, and stir at 45°C for 2 hours to prepare solution S2;

[0058] (3) above-mentioned solution S2 is added in the autoclave, and the reactor is replaced by CO 2 , ensure that the inside of the kettle is a carbon dioxide atmosphere, pressurize to 1MPa and control the temperature in the kettle to be 40 ℃, the solution S1 is injected into the autoclave solution S2 at a speed of 50mL / min by the plunger pump, and the reaction is stirred for 2h after the injection is completed, and the autoclave is vented. Pressing, the product is centrifuged and washed with tert-butanol to obtain a precipitated product;

[0059] (4) The above-mentioned precipitation product was vacuum-dried to constant weight at 45° C., and 426 g of bimetallic catalyst (D...

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Abstract

The invention discloses poly (carbonate-ether) polyol and a preparation method thereof, and belongs to the technical field of polymer preparation. According to the preparation method, through design synthesis of a bimetallic catalyst, under the carbon dioxide pressure condition, the bimetallic catalyst is used for catalyzing an epoxy compound and a chain transfer agent to be subjected to a polymerization reaction, poly (carbonic ester-ether) polyol is obtained, and therefore efficient preparation of carbon dioxide-based polyols with different molecular weights is achieved. The content of carbonate units in the prepared polyol is controllable, and the content of cyclic carbonate by-products is extremely low.

Description

technical field [0001] The invention relates to a poly(carbonate-ether) polyol and a preparation method thereof, belonging to the technical field of polymer preparation. Background technique [0002] Carbon dioxide-based polyol is a new type of polyol with carbonate bond and ether bond structure synthesized from carbon dioxide as raw material. It is mainly used as raw material for polyurethane synthesis. Due to its "natural" advantages such as environmental protection and low cost, it has become a new type of polyol material with the most development potential, and has attracted much attention from the scientific research and industrial circles. [0003] The most critical problem in the preparation of polyols from carbon dioxide and epoxy compounds is the design of catalysts. Since the discovery of carbon dioxide copolymerization, catalyst research has attracted much attention as the core factor limiting the development of this field. Scientists from many countries have car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G64/34C08G65/26
CPCC08G64/34C08G65/2663
Inventor 秦玉升古雅楠索泓一曲瑞
Owner YANTAI UNIV
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