A kind of neutral degreasing agent and its preparation method and application
A degreaser and neutral technology, applied in the field of neutral degreaser and its preparation, can solve the problems of pH sensitivity of degreaser, large surface damage of galvanized parts, easy to be oxidized, etc., and achieve high quality and improved quality. , the effect of improving the degreasing effect
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Embodiment 1
[0051] Step1 Add 300mL of water to a reaction kettle with a processing capacity of 1L, raise the temperature to 45°C, add 4g of isooctyl alcohol polyoxyethylene ether, 2g of cocamidopropyl betaine, 1g of sodium dodecylsulfonate, fatty acid methyl Ester ethoxylate sulfonate 1g, tridecyl polyoxyethylene (9) ether 1g, intermittently stirred evenly, and stood until the foam was eliminated;
[0052] Step2 Add 2g of anti-deposition agent into 300mL water and stir evenly;
[0053] Step3 Keep the temperature of the reactor at 45°C, add the solution obtained in step (2) dropwise to the reactor at a rate of 0.1 L / min, stop the dropwise addition every 1 minute, and stir at a low speed at a rate of 50 r / min. The stirring time is 3min, until the dropwise addition is complete;
[0054] Step4 Continue to add 2g of complexing agent and 1g of corrosion inhibitor to the reaction kettle of step (3) at 45°C, replenish water to 1L, and stir evenly to prepare a neutral degreasing agent.
Embodiment 2
[0056] Step1 Add 400mL of water to a reaction kettle with a processing capacity of 1L, raise the temperature to 55°C, add 8g of isooctyl alcohol polyoxyethylene ether, 4g of cocamidopropyl betaine, 2g of sodium dodecylsulfonate, fatty acid methyl Ester ethoxylate sulfonate 2g, tridecyl polyoxyethylene (9) ether 2g, intermittently stirred evenly, and stood until the foam was eliminated;
[0057] Step2 Add 4g of anti-deposition agent into 400mL of water and stir evenly;
[0058] Step3 Keep the temperature of the reactor at 55°C, add the solution obtained in step (2) dropwise to the reactor at a rate of 0.2 L / min, stop the dripping every 1 minute, and stir at a low speed, the stirring speed is 100r / min, Stirring time is 5min, until the dropwise addition is complete;
[0059] Step4 Continue to add 4g of complexing agent and 2g of corrosion inhibitor to the reaction kettle of step (3) at 55°C, replenish water to 1L, and stir evenly to prepare a neutral degreasing agent.
Embodiment 3
[0061] Step1 Add 350mL of water to a reaction kettle with a processing capacity of 1L, raise the temperature to 50°C, add 6g of isooctyl alcohol polyoxyethylene ether, 3g of cocamidopropyl betaine, 1.5g of sodium dodecylsulfonate, fatty acid Methyl ester ethoxylate sulfonate 1.5g, tridecyl polyoxyethylene (9) ether 1.5g, stir intermittently evenly, let stand until the foam disappears;
[0062] Step2 Add 3g of anti-deposition agent into 350mL of water and stir evenly;
[0063] Step3 Keep the temperature of the reactor at 50°C, add the solution obtained in step (2) dropwise to the reactor at a rate of 0.15 L / min, stop the dripping every 1 minute, and stir at a low speed at a rate of 75 r / min. Stirring time is 4min, until the dropwise addition is complete;
[0064] Step4 Continue to add 3g of complexing agent and 1.5g of corrosion inhibitor to the reaction kettle of step (3) at 50°C, add water to 1L, and stir evenly to prepare a neutral degreasing agent.
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