Catalyst and method for synthesizing polyethylene oxide polymer

A polyoxyethylene and synthesis method technology, applied in the chemical industry, can solve problems such as metal ion residues, polyoxyethylene polymer product quality and production environmental protection, and cannot be applied to industrial production fields, etc., to achieve strong catalytic activity and control Effects on production cost, quality improvement and environmental friendliness

Active Publication Date: 2018-02-09
JIAHUA CHEM MAOMING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the high concentration of metal ions remaining in the synthesis of polyethylene oxide polymers catalyzed by alkaline catalysts such as alkali metal compounds or alkali metal simple substances in the prior art, making polyethylene oxide polymers The product quality and production environmental protection of polymers are reduced, and the problems that cannot be applied to high-standard industrial production fields

Method used

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  • Catalyst and method for synthesizing polyethylene oxide polymer

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Embodiment 1

[0032] This embodiment provides a synthetic method for polyoxyethylene polymers, specifically comprising the following steps:

[0033] 1. Add 0.5 moles of methacryl alcohol to the high-pressure experimental reactor, and add 26.5 moles of ethylene oxide to the metering tank.

[0034] 2, continue to add the synthetic catalyst of polyoxyethylene polymer in reactor, the add-on of catalyst is 0.01% of methacryl alcohol and oxirane quality and, and catalyst is made of 18-crown (ether)-6, hydrogen Composition of Potassium Oxide and Methyltriphenylphosphine Bromide, wherein the number of moles of 18-crown (ether)-6: the number of moles of Potassium Hydroxide: the number of moles of Methyltriphenylphosphine Bromide=1:0.5:0.5 .

[0035] 3. After sealing the kettle, carry out nitrogen replacement, and the temperature inside the kettle rises to 100-120°C. At 100-120°C, start to add the ethylene oxide in the metering tank into the reaction kettle, and gradually raise the temperature, con...

Embodiment 2

[0039] This embodiment provides a synthetic method for polyoxyethylene polymers, specifically comprising the following steps:

[0040] 1. Add 0.5 moles of prenol to the high-pressure experimental reactor, and add 25 moles of ethylene oxide to the metering tank.

[0041] 2, continue to add the synthetic catalyst of polyoxyethylene polymer in reactor, the add-on of catalyzer is 0.1% of prenyl alcohol and oxirane quality and, and catalyzer is made of 15-crown (ether)-5, hydrogenation Composition of sodium and ethyltriphenylphosphine bromide, wherein the number of moles of 15-crown (ether)-5: the number of moles of sodium hydride: the number of moles of ethyltriphenylphosphine bromide=1:0.8:0.6.

[0042] 3. After sealing the kettle, carry out nitrogen replacement, and the temperature inside the kettle rises to 100-120°C. At 100-120°C, start to add the ethylene oxide in the metering tank into the reaction kettle, and gradually raise the temperature, control the reaction temperatur...

Embodiment 3

[0046] This embodiment provides a synthetic method for polyoxyethylene polymers, specifically comprising the following steps:

[0047] 1. Add 0.5 moles of 1,4-butenediol to the high-pressure experimental reactor, and add 32 moles of ethylene oxide to the metering tank.

[0048] 2. Continue to add the synthesis catalyst of polyoxyethylene polymer in the reactor, the addition of catalyst is 0.3% of the mass sum of 1,4-butene diol and ethylene oxide, and the catalyst consists of 12-crown (ether) -4. Lithium metal and propyl triphenylphosphine bromide, wherein the number of moles of 12-crown (ether)-4: the number of moles of lithium metal: the number of moles of propyl triphenylphosphine bromide=1:1.1 :0.5.

[0049] 3. After sealing the kettle, carry out nitrogen replacement, and the temperature inside the kettle rises to 100-120°C. At 100-120°C, start to add the ethylene oxide in the metering tank into the reaction kettle, and gradually raise the temperature, control the reaction...

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Abstract

The invention provides a catalyst for synthesizing a polyethylene oxide polymer. The catalyst comprises a component 1, a component 2 and a component 3. The component 1 is a crown ether. The component2 is a quaternary phosphonium salt. The component 3 is an alkali metal and / or an alkali metal compound. The catalyst can reduce an alkali metal ionic concentration of the product, improve product quality and is suitable for the high standard industrial field. The invention also provides a method for synthesizing the polyethylene oxide polymer. The method comprises mixing an active hydrogen-containing compound and the catalyst, adding ethylene oxide into the mixture in an oxygen-free environment or in a vacuum environment, controlling a temperature in a range of 100-180 DEG C and pressure lessthan or equal to 1.0MPa, keeping the conditions for 1-8h to obtain the reaction product containing the polyethylene oxide-containing polymer and adding an acidic compound for neutralization into the reaction product. The method is easy to operate, is environmentally friendly, improves product quality and is suitable for high-standard industrial production.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a catalyst for synthesizing polyoxyethylene polymers and a synthesis method thereof. Background technique [0002] Polyoxyethylene polymers, such as polyethylene glycol, fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ester, fatty amine polyoxyethylene ether, methoxypolyethylene glycol, acryl alcohol polyoxyethylene ether, isopentyl Enol polyoxyethylene ether or methacryl alcohol polyoxyethylene ether, etc. These products are widely used as raw materials for medicine, concrete additives, detergents, textile printing and dyeing auxiliaries, etc., and are a large class of important fine chemical materials. The synthesis of polyoxyethylene polymers is based on the compound containing active hydrogen as the initiator, and in the presence of a catalyst, it is polymerized with ethylene oxide. [0003] Compounds containing active hydrogen are polym...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G65/26
CPCC08G65/2609C08G65/2612C08G65/2615C08G65/2624C08G65/269C07C2531/22C07C2531/16C07C2527/14C08G65/2648
Inventor 梁国强
Owner JIAHUA CHEM MAOMING
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