A surface modification treatment agent, modified calcium hydroxide and a microporous polyurethane elastic material
A polyurethane elasticity and surface modification technology, applied in the field of calcium hydroxide surface modification treatment agent, modified calcium hydroxide and microporous polyurethane elastic materials, can solve the problem of uneven construction and poor construction stability of microporous polyurethane elastic materials , incomplete foaming, etc., to achieve the effect of uniform material cells, good shock absorption and mechanical properties, and promoting the reaction.
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Embodiment 1
[0054] Preparation of 4,4'-bis-secondary isopropylaminomethyldiphenylmethane:
[0055] 113g of 4,4'-bis(aminomethyl)diphenylmethane (Wuhan Elmert Company), 113g of acetone and 2.6g of palladium / hydrogen zeolite catalyst (palladium content of 0.5%, Changsha Yirui Chemical Materials Co., Ltd. ) is connected to the high pressure reactor, and the air in the reactor is replaced by nitrogen for 3 times, and the nitrogen pressure is 0.3MPa; then the nitrogen in the reactor is replaced by hydrogen for 3 times, and the hydrogen is introduced to pressurize to 3MPa. Heating and stirring, the temperature was 130 ° C, and the hydrogen pressure was kept constant during the reaction. After 5h of reaction, observe that if the hydrogen pressure does not drop any more, then cool down and discharge. The reaction solution was subjected to atmospheric distillation at 105° C. to remove impurities to obtain the target product. A Bruker AVANCEⅢ 400Hz nuclear magnetic resonance spectrometer was used...
Embodiment 2
[0057] Preparation of 4,4'-bis-secondary isopropylaminomethyldiphenylmethane:
[0058] 100g 4,4'-bis(aminomethyl)diphenylmethane (Wuhan Elmert Company), 110g acetone and 2.5g palladium / hydrogen zeolite catalyst (palladium content 0.5%, Changsha Yirui Chemical Materials Co., Ltd. ) is connected to the high pressure reactor, and the air in the reactor is replaced 3 times by introducing nitrogen, and the nitrogen pressure is 0.3 MPa; then, the nitrogen in the reactor is replaced by hydrogen for 3 times, and the hydrogen is introduced to pressurize to 3.2 MPa. Heating and stirring, the temperature was 120 ° C, and the hydrogen pressure was kept unchanged during the reaction. After 5h of reaction, observe that if the hydrogen pressure does not drop any more, then cool down and discharge. The reaction solution was subjected to atmospheric distillation at 105° C. to remove impurities to obtain the target product.
Embodiment 3
[0060] Modified calcium hydroxide X:
[0061] 4,4'-bis-sec-isopropylaminomethyldiphenylmethane and bis(tetramethyldiethylenetriaminopropyl)amine [prepared with reference to Example 1 of CN109456455A] are prepared in a mass ratio of 5:1 Surface modification treatment agent
[0062] Add 10g of ground calcium oxide (commercially available, with a particle size of about 1mm) into a three-necked flask, add 1.2g of the above-mentioned surface modification treatment agent, add 200g of deionized water at 70°C, and the oil bath temperature is 70°C at 250r / min. Stirring at rotational speed for 2 h, and then dewatering under reduced pressure for 1 h. The reaction product was dried in a vacuum oven at 100°C.
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