Lubricant spray polymers
A technology of copolymers and mixtures, applied in lubricating compositions, petroleum industry, etc., can solve the problems of reducing engine efficiency and life
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Embodiment 1
[0071] Mix 645.5g water and 8.7g OT was added to a 4 neck 2000 mL flask equipped with overhead stirrer, condenser, thermocouple and subsurface nitrogen flush. Stirring was turned up to 200 rpm and a subsurface nitrogen flush was started. Subsequently, 270.0 g of lauryl methacrylate, 30.0 g of 2-ethylhexyl methacrylate, and 129.9 g of acetone were added to the container to react. The reaction was heated to 43°C by using a temperature-controlled water bath set at 45°C. Once the reaction reached 43°C, 0.04 g tert-butyl hydroperoxide in 7.5 g water was added. After 5 minutes, 0.29 g of sodium ascorbate was dissolved in 7.5 g of water and 0.60 g of 0.25% ferric sulfate hexahydrate solution was added. The nitrogen flush was then changed to a nitrogen blanket. The reaction was continued for another 5 hours, cooled to room temperature and separated.
Embodiment 2
[0073] Mix 645.5g water and 8.7g OT was added to a 4 neck 2000 mL flask equipped with overhead stirrer, condenser, thermocouple and subsurface nitrogen flush. Stirring was turned up to 200 rpm and a subsurface nitrogen flush was started. Then, 240.0 g of lauryl methacrylate, 60.0 g of 2-ethylhexyl methacrylate, and 129.9 g of acetone were added to the container to react. The reaction was heated to 43°C by using a temperature-controlled water bath set at 45°C. Once the reaction reached 43°C, 0.04 g tert-butyl hydroperoxide in 7.5 g water was added. After 5 minutes, 0.29 g of sodium ascorbate was dissolved in 7.5 g of water and 0.60 g of 0.25% ferric sulfate hexahydrate solution was added. The nitrogen flush was then changed to a nitrogen blanket. The reaction was continued for another 5 hours, cooled to room temperature and separated.
Embodiment 3
[0075] Mix 645.5g water and 8.7g OT was added to a 4 neck 2000 mL flask equipped with overhead stirrer, condenser, thermocouple and subsurface nitrogen flush. Stirring was turned up to 200 rpm and a subsurface nitrogen flush was started. Then, 210.0 g of lauryl methacrylate, 90.0 g of 2-ethylhexyl methacrylate, and 129.9 g of acetone were added to the container to react. The reaction was heated to 43°C by using a temperature-controlled water bath set at 45°C. Once the reaction reached 43°C, 0.04 g tert-butyl hydroperoxide in 7.5 g water was added. After 5 minutes, 0.29 g of sodium ascorbate was dissolved in 7.5 g of water and 0.60 g of 0.25% ferric sulfate hexahydrate solution was added. The nitrogen flush was then changed to a nitrogen blanket. The reaction was continued for another 5 hours, cooled to room temperature and separated.
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Abstract
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