Purification method of polyether polyol with low degree of unsaturation
A polyether polyol and purification method technology, which is applied in the directions of ether separation/purification, ether preparation, organic chemistry, etc., can solve problems such as adverse effects of polyether polyols in later storage, adverse polyurethane synthesis, affecting polyurethane products, etc., and achieve adsorption. The effect is better, the technology is simple and practical, the effect of simplifying the process
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Embodiment 1
[0014] (1) 60g of polyether polyols containing bimetallic catalysts are added into a three-necked flask;
[0015] (2) adding thereto again with the polyether polyol mass ratio in the there-necked flask is the functional fiber and activated clay mixture of 0.03;
[0016] (3) Place the three-neck flask containing the mixture of polyether polyol, functional fiber and activated clay adsorbent in a constant temperature water bath, heat it to 60°C under stirring with a D25-2 electric mixer, and adsorb at a constant temperature for 2 hours;
[0017] (4) Take the three-neck flask out of the water bath, pour its contents into the centrifuge rotor after cooling to room temperature, and centrifuge to obtain the target product of high-purity polyether polyol.
[0018] The separated product was detected by plasma emission spectrometry for the removal of the bimetallic catalyst in the polyether polyol by the adsorbent. The result was that the zinc content in the polyether polyol was 0.54×10...
Embodiment 2
[0020] Process step is identical with embodiment 1, difference is that the adsorbent that adds in (2) is the mixture of 1.2g functional fiber and 2.4g active carbon fiber, the mass ratio of adsorbent mixture and polyether polyol in step (1) is 0.06.
[0021] The separated product was detected by plasma emission spectrometry for the removal of the bimetallic catalyst in the polyether polyol by the adsorbent. The result was that the zinc content in the polyether polyol was 0.78×10 -6 , cobalt content is 0.60×10 -6 .
Embodiment 3
[0023] Process step is identical with embodiment 1, and difference is that the adsorbent that adds in (2) is the mixture of 3g activated clay and 3g activated carbon fiber, and the mass ratio of adsorbent mixture and polyether polyol in step (1) is 0.1 .
[0024] The separated product was detected by plasma emission spectrometry for the removal of the bimetallic catalyst in the polyether polyol by the adsorbent. The result was that the zinc content in the polyether polyol was 2.65×10 -6 , cobalt content is 1.24×10 -6 .
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