Amphiphilic block inner quaternary ammonium salt as well as preparation method and application thereof
An amphiphilic block, quaternary ammonium technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of easy shearing and degradation of macromolecular chains, poor polymer solubility, easy adsorption in rock formations, etc. , to achieve the effect of good solution viscosity reduction, good water solubility and soluble biodegradability
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Embodiment 1
[0050] Add 100.00g tertiary acrylate monomer shown in formula II in the reaction vessel 10g 1g Mix 0.2g of catalyst cuprous iodide, 100g of distilled water and 50g of toluene; adjust the pH value of the reaction system to 7 with NaOH solution, feed high-purity nitrogen into the solution system, adjust the temperature of the system to 5°C, and add the initiator α- 1 g of ethyl 2-bromopropionate was subjected to atom transfer radical polymerization for 2 hours; the obtained polymer gel was dialyzed with a dialysis membrane, dried and pulverized to obtain a powder product, ie oil displacing agent 1#.
[0051] The resulting product is confirmed by infrared spectrum, the results are as follows: 1650cm -1 C=C stretching vibration peak at 3000cm -1 The obvious olefin characteristic peaks such as the olefin C-H stretching vibration peak at 1115cm -1The asymmetric stretching vibration peak of C-O-C appears at 3200em -1 The N-H stretching vibration of the ammonium salt ion appea...
Embodiment 2
[0054] According to the steps of Example 1, only the The mass of is replaced by 15g, The mass of the distilled water was replaced with 1.5g, the mass of distilled water was replaced with 150g, the system temperature was replaced with 10°C, and the reaction time was replaced with 4 hours to obtain the product, that is, oil displacement agent 2#.
[0055] The obtained product is confirmed by infrared spectrogram, and the results are as follows: 1650cm -1 C=C stretching vibration peak at 3000cm -1 The obvious olefin characteristic peaks such as the olefin C-H stretching vibration peak at 1115cm -1 The asymmetric stretching vibration peak of C-O-C appears at 3200cm -1 The N-H stretching vibration of the ammonium salt ion appeared at 1055cm -1 The S=O stretching vibration of the sulfonate appeared at the place, so it can be concluded that the polymerization occurred and the internal salt was formed.
[0056] R 1 and R 2 Both are C 8 h 17 , m is 5, and the quantitative an...
Embodiment 3
[0058] According to the steps of Example 1, only the quality of distilled water is replaced by 200g, the quality of initiator is replaced by 2g, the consumption of catalyst cuprous iodide is replaced by 0.6g, the system temperature is replaced by 20°C, and the reaction time is replaced by 5 hours, The product, ie oil displacing agent 3#, was obtained.
[0059] The obtained product is confirmed by infrared spectrogram, and the results are as follows: 1650cm -1 C=C stretching vibration peak at 3000cm -1 The obvious olefin characteristic peaks such as the olefin C-H stretching vibration peak at 1115cm -1 The asymmetric stretching vibration peak of C-O-C appears at 3200cm -1 The N-H stretching vibration of the ammonium salt ion appeared at 1055cm -1 The S=O stretching vibration of the sulfonate appeared at the place, so it can be concluded that the polymerization occurred and the internal salt was formed.
[0060] R 1 and R 2 Both are C 8 h 17 , m is 5, and the quantitativ...
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Abstract
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