Antioxidant polyether polyol and preparation method thereof

A technology for polyether polyol and oxidizing polyether, which is applied in the field of polyether synthesis, can solve the problems of changing chemical properties, reducing the storage period of polyether polyol, etc., and achieves the effects of reducing usage, scientific and reasonable preparation method, and increasing benefits.

Inactive Publication Date: 2015-01-28
ZIBO DEXIN LIANBANG CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, antioxidants have adverse effects on some properties of polyether polyols, such as reducing the storage period of polyether polyols, changing certain chemical properties, etc.

Method used

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  • Antioxidant polyether polyol and preparation method thereof
  • Antioxidant polyether polyol and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Accurately weigh 100g of o-phenylenediamine, 100g of sorbitol and 1.1g of potassium hydroxide catalyst, and transfer them into a 3L reaction kettle.

[0020] (2) Stirring was started, nitrogen was replaced 6 times, and the temperature was slowly raised to 40° C. to dissolve until homogeneous.

[0021] (3) Continue to heat up to 85° C., slowly drop in 15 g of propylene oxide and stop feeding.

[0022] (4) After the reaction starts, add the remaining 97g of propylene oxide by continuous feeding method, and after aging at 105°C for 7 hours, add 238g of ethylene oxide by continuous feeding method to prepare crude polyether. The reaction temperature is 85°C, the reaction is 25h, and the reaction pressure is controlled to be <0.2MPa.

[0023] (5) Cool the crude polyether to 85°C, add water and phosphoric acid, and adjust the pH to 7.0.

[0024] (6) Add magnesium silicate or aluminum silicate for adsorption, raise the temperature to 110° C., pass nitrogen to evacuate to ...

Embodiment 2

[0027] (1) Accurately weigh 400g of o-phenylenediamine, 200g of sorbitol and 3g of hexachlorocyclotriphosphazene, and transfer them into a 5L reaction kettle.

[0028] (2) Stirring was started, nitrogen was replaced 8 times, and the temperature was slowly raised to 70° C. to dissolve until homogeneous.

[0029] (3) Continue to heat up to 85° C., slowly drop in 20 g of propylene oxide and stop feeding.

[0030] (4) After the reaction starts, add the remaining 500g of propylene oxide by continuous feeding method, and after aging at 105°C for 7 hours, add 1100g of ethylene oxide by continuous feeding method to prepare polyether. The reaction temperature is 100° C., the reaction is 18 hours, and the reaction pressure is controlled to be <0.2 MPa.

[0031] (5) Cool the crude polyether to 85°C, add water and phosphoric acid, and adjust the pH to 7.0.

[0032] (6) Add magnesium silicate or aluminum silicate for adsorption, raise the temperature to 110° C., pass nitrogen to evacuate...

Embodiment 3

[0035] (1) Accurately weigh 300g of o-phenylenediamine, 100g of sorbitol and 5g of hexachlorocyclotriphosphazene, and transfer them into a 5L reaction kettle.

[0036] (2) Stirring was started, nitrogen was replaced 10 times, and the temperature was slowly raised to 60° C. to dissolve until homogeneous.

[0037] (3) Continue to heat up to 85° C., slowly drop in 20 g of propylene oxide and stop feeding.

[0038] (4) After the reaction starts, add the remaining 332g of propylene oxide by continuous feeding method, and after aging at 105°C for 7 hours, add 748g of ethylene oxide by continuous feeding method to prepare polyether. The reaction temperature is 115°C, the reaction is 20h, and the reaction pressure is controlled to be <0.2MPa.

[0039] (5) Cool the crude polyether to 85°C, add water and phosphoric acid, and adjust the pH to 7.0.

[0040] (6) Add magnesium silicate or aluminum silicate for adsorption, raise the temperature to 110° C., pass nitrogen to evacuate to remo...

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Abstract

The invention belongs to the technical field of synthesis of polyether and particularly relates to antioxidant polyether polyol and a preparation method thereof. The antioxidant polyether polyol is prepared from the following raw materials in parts by weight: 200-600 parts of an initiator, 1-5 parts of a catalyst, 112-520 parts of propylene oxide and 238-1100 parts of ethylene oxide, wherein the initiator is o-phenylenediamine and sorbitol. The preparation method comprises the following steps: dissolving the initiator and the catalyst until a homogeneous phase is formed, displacing, heating, dropwise adding propylene oxide and ethylene oxide and reacting to obtain crude polyether polyol; washing crude polyether with water, neutralizing, adsorbing, drying and filtering to obtain the finished product, namely, polyether polyol. The polyether polyol prepared by the preparation method disclosed by the invention has good antioxidant effect, the amount of the antioxidant is reduced, the production steps are simplified, the benefits are increased and the range of source of raw materials is wide; the preparation method is scientific, reasonable, simple and feasible.

Description

technical field [0001] The invention belongs to the technical field of polyether synthesis, and in particular relates to an anti-oxidation polyether polyol and a preparation method thereof. Background technique [0002] The antioxidant performance of polyether polyols in the current market is mainly achieved by adding antioxidants. To a certain extent, the higher the antioxidant content in polyether polyol, the better the antioxidant effect. However, antioxidants have adverse effects on some properties of polyether polyols, such as reducing the storage period of polyether polyols and changing certain chemical properties. Therefore, under the premise of ensuring the quality of polyether polyols, antioxidants should be used as little as possible to achieve the antioxidant effect. Reactive anti-oxidation polyether is often synthesized into the polymer chain as a monomer bond, which has little effect on the physical properties of the product and has a long-lasting anti-oxidati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G65/26
Inventor 耿佃勇荆晓东贾飞董伟
Owner ZIBO DEXIN LIANBANG CHEM IND
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