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High-molecular polyol supported catalyst as well as preparation method and application thereof

A technology of high molecular polyols and supported catalysts, which is applied in the field of catalytic synthesis, and can solve problems such as long initiation time, product stability to be improved, and limited application range

Pending Publication Date: 2022-07-29
吉林一先科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The research on the fixation and utilization of carbon dioxide has been widely concerned by enterprises and scientific research institutes, but the low added value seriously limits its application range. How to make high-value use of carbon dioxide is one of the difficult problems in the industry
However, the current process generally takes more than 2 hours to initiate, and the initiation time is relatively long, and the product stability needs to be improved.

Method used

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  • High-molecular polyol supported catalyst as well as preparation method and application thereof

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preparation example Construction

[0025] The invention provides a preparation method of a polymer polyol supported catalyst, comprising the following steps:

[0026] After the catalyst powder and the carrier are mixed, the catalyst is supported and activated at 120-190° C., and after extrusion granulation or pulverization, the polymer polyol supported catalyst is obtained.

[0027] In the present invention, the catalyst powder is prepared according to the following method:

[0028] The catalyst is ground in argon to obtain activated catalyst powder;

[0029] The catalysts include rare earth ternary catalysts, organic zinc carboxylate catalysts or double metal cyanide catalysts.

[0030] In certain embodiments of the present invention, the rare earth ternary catalyst is a diethylzinc-glycerol-yttrium trichloroacetate ternary rare earth catalyst. In certain embodiments, each liter of diethylzinc-glycerol-yttrium trichloroacetate ternary rare earth catalyst contains Y(CCl 3 COO) 3 0.0015mol, 0.03mol glycerol ...

Embodiment 1

[0060] (1) After freeze-drying the diethylzinc-glycerol-yttrium trichloroacetate ternary rare earth catalyst at 20° C. for 24 hours, grinding in argon for 0.5 hours to obtain the ternary rare earth catalyst powder;

[0061] (2) using terephthalic acid as an initiator and double metal cyanide as a catalyst, to prepare a polycarbonate diol (PPCOH-20k-5) with a weight-average molecular weight of 20kDa and a carbonate mass content of 50%;

[0062] (3) In an internal mixer, after mixing the ternary rare earth catalyst powder and PPCOH-20k-5 in a mass ratio of 5:5, the temperature is raised to 130° C., banburying for 5 min, cooling to room temperature, and pulverizing to obtain high Molecular polyol supported catalyst.

[0063] In order to verify the initiation effect and polymerization effect of the polymer polyol supported catalyst, the polymer polyol supported catalyst was used as a catalyst to carry out a polymerization test in a 100 mL high pressure reactor with an infrared det...

Embodiment 2

[0066] (1) 40g of zinc glutarate catalyst is ground in argon for 0.5h to obtain zinc glutarate catalyst powder;

[0067] (2) using citric acid as an initiator and double metal cyanide as a catalyst to prepare a polycarbonate diol (PPCOH-40k-4) with a weight average molecular weight of 20kDa and a carbonate content of 40%;

[0068] (3) In the internal mixer, after mixing the zinc glutarate catalyst powder and PPCOH-40k-4 at a mass ratio of 8:2, add them into a twin-screw extruder, and the screw temperature is 150-190° C. , the absolute pressure of the vacuum exhaust section is 10kPaA, air cooling after extrusion, and granulation to obtain a polymer polyol supported catalyst.

[0069] In order to verify the initiation effect and polymerization effect of the polymer polyol supported catalyst, the polymer polyol supported catalyst was used as a catalyst to carry out a polymerization test in a 100 mL high pressure reactor with an infrared detector: Molecular polyol supported catal...

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Abstract

The invention relates to the technical field of catalytic synthesis, in particular to a macromolecular polyol supported catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing catalyst powder and a carrier, carrying out loading and activation at 120-190 DEG C, and carrying out extrusion granulation or crushing to obtain the macromolecular polyol loaded catalyst. In the invention, the catalyst powder is prepared according to the following method: grinding a catalyst in argon to obtain activated catalyst powder; the catalyst comprises a rare earth three-way catalyst, an organic zinc carboxylate catalyst or a double-metal cyanide catalyst. The high-molecular polyol supported catalyst provided by the invention is used for preparation of polypropylene carbonate, can rapidly initiate a reaction after reaching a reaction temperature, eliminates the influence of initiation time, ensures the stability of a product, and has a better catalytic effect. Meanwhile, the polymer carrier is low in water absorption rate and good in moisture resistance, so that the catalyst still has relatively good catalytic efficiency after being stored for a long time.

Description

technical field [0001] The invention relates to the technical field of catalytic synthesis, in particular to a polymer polyol supported catalyst, a preparation method and application thereof. Background technique [0002] Carbon dioxide is a common greenhouse gas. At present, my country's carbon dioxide emissions account for more than 1 / 4 of the world's total, which has brought serious environmental pollution problems. The research on carbon dioxide fixation and utilization has been widely concerned by enterprises and scientific research units, but the low added value seriously limits its application scope. How to utilize carbon dioxide with high value is one of the difficult problems in the industry. Synthesis of polymer materials with carbon dioxide as raw material has always been one of the important means to increase the added value of carbon dioxide applications. Since 1969, when Professor Inoue of Japan first used carbon dioxide and epoxide to copolymerize aliphatic po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G64/34
CPCC08G64/34
Inventor 李东轩
Owner 吉林一先科技有限公司
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