Method for preparing aliphatic oligo carbonate polyol
A technology of aliphatic polyol and oligocarbonate, applied in the field of preparation of aliphatic oligocarbonate polyol, can solve the problems of product discoloration, low catalytic activity, yellowing, etc.
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Embodiment 1
[0019] x mol Mg(NO 3 ) 2 ·6H 2 O and y mol Al(NO 3 ) 3 9H 2 O was dissolved in 100ml distilled water to make solution A, and another 2(x+y)mol NaOH and 0.5ymol NaOH were taken 2 CO 3 Also dissolved in 100ml of distilled water to make solution B, where x+y=0.1mol, x:y=2:1. First add 100ml of distilled water to a four-neck flask equipped with a thermometer, mechanical stirring, and constant pressure funnel, raise its temperature to 333K under rapid stirring, and then add solutions A and B to the flask dropwise within 1 hour at this temperature During the dropping process, the pH value of the mixed solution was kept between 8 and 10. After the dropping was completed, the final pH value was adjusted to 10 by adding NaOH. Set it aside for 24 hours, and finally filtered it with suction and washed it with water until the pH value of the filtrate was 7, then dried it at 333K for 12 hours, and roasted it at 773K for 5 hours to obtain the catalyst.
[0020] In a reaction vessel ...
Embodiment 2
[0022] x mol Ni(NO 3 ) 2 ·6H 2 O and y mol Al(NO3)3·9H 2 O was dissolved in 100ml distilled water to make solution A, and another 2(x+y)mol NaOH and 0.5ymol NaOH were taken 2 CO 3 Also dissolved in 100ml of distilled water to make solution B, where x+y=0.1mol, x:y=3:1. First add 100ml of distilled water to a four-neck flask equipped with a thermometer, mechanical stirring, and constant pressure funnel, raise its temperature to 333K under rapid stirring, and then add solutions A and B to the flask dropwise within 1 hour at this temperature During the dropping process, the pH value of the mixed solution was kept between 8 and 10. After the dropping was completed, the final pH value was adjusted to 10 by adding NaOH. Set it aside for 24 hours, and finally filtered it with suction and washed it with water until the pH value of the filtrate was 7, then dried it at 333K for 12 hours, and roasted it at 773K for 5 hours to obtain the catalyst.
[0023] In a reaction vessel equip...
Embodiment 3
[0025] x mol Zn(NO 3 ) 2 ·6H 2 O and y mol Al(NO 3 ) 3 9H 2 O was dissolved in 100ml distilled water to make solution A, and another 2(x+y)mol NaOH and 0.5ymol NaOH were taken 2 CO 3 Also dissolved in 100ml of distilled water to make solution B, where x+y=0.1mol, x:y=4:1. First add 100ml of distilled water to a four-neck flask equipped with a thermometer, mechanical stirring, and constant pressure funnel, raise its temperature to 333K under rapid stirring, and then add solutions A and B to the flask dropwise within 1 hour at this temperature During the dropping process, the pH value of the mixed solution was kept between 8 and 10. After the dropping was completed, the final pH value was adjusted to 10 by adding NaOH. Set it aside for 24 hours, and finally filtered it with suction and washed it with water until the pH value of the filtrate was 7, then dried it at 333K for 12 hours, and roasted it at 773K for 5 hours to obtain the catalyst.
[0026]In a reaction vessel e...
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