Production process of nanoscale acrylic emulsion

Abstract

The invention discloses a nanoscale acrylic emulsion production process, and particularly relates to the technical field of acrylic emulsion production, which comprises the following steps: step 1, preparing emulsion ingredients: a component A, a component B, a component C, a component D, a component E, a component F, a component G and a component H, the component A comprises methyl methacrylate, styrene, 2-ethylhexyl acrylate, methacrylic acid, acrylamide, P-301, C-105 and deionized water, the component B comprises P-301 and deionized water, the component C comprises potassium peroxodisulfate and deionized water, the component D comprises potassium sulfate and deionized water, the component E comprises F-111, the component C comprises sodium dodecyl sulfate and deionized water, and the component D comprises sodium dodecyl sulfate and deionized water. The component F comprises tert-butyl hydroperoxide and deionized water, and the component G comprises sodium formaldehyde sulfoxylate and deionized water. The prepared acrylic emulsion paint film has the advantages of good permeability, high glossiness, excellent water white resistance, excellent wet adhesion, excellent weatherability, and good compatibility stability on protective glue, so the actual use effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of acrylic emulsion production, and more specifically to a nano-scale acrylic emulsion production process. Background Art

[0002] Acrylic emulsion, also known as water-based acrylic emulsion, is an emulsion formed by copolymerization of pure acrylic ester monomers. The acrylic emulsion produced by the existing acrylic emulsion production process has the following disadvantages: (1) The paint film is not transparent enough and the glossiness is not high; (2) Lack of excellent water whitening resistance, wet adhesion and weather resistance; (3) It does not have good compatibility stability with protective adhesives.

[0003] Therefore, a nano-scale acrylic emulsion production process is urgently needed to solve the above problems. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a nano-scale acrylic emulsion production process. The acrylic emulsion paint film prepared by the present invention has good permeability, high gloss, excellent water whitening resistance, wet adhesion and weather resistance, and good compatibility stability for protecting adhesives. Therefore, the actual use effect is good, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a process for producing a nano-scale acrylic emulsion, comprising the following steps: Step 1: prepare emulsion ingredients: component A, component B, component C, component D, component E, component F, component G and component H, component A includes methyl methacrylate, styrene, isooctyl acrylate, methacrylic acid, acrylamide, P-301, C-105 and deionized water, component B includes P-301 and deionized water, component C includes potassium persulfate and deionized water, component D includes potassium sulfate and deionized water, component E includes F-111, component F includes tert-butyl hydroperoxide and deionized water, component G includes bleaching powder and deionized water, and component H includes P-620, ammonia water, alcohol ester dodecahydrate and deionized water; Step 2: Check the production equipment and the condition of each valve, and handle any abnormalities in a timely manner to avoid affecting the emulsion production; Step 3: Add the deionized water in component A to the large header tank, start stirring, add P-301 and acrylamide to the polymerization reactor, stir for 10 minutes, then add styrene, methyl methacrylate, isooctyl acrylate, methacrylic acid, and C-105 to the large header tank in sequence and emulsify for 20 minutes; Step 4: Add the deionized water and P-301 in component B to the polymerization reactor, heat the polymerization reactor to 84°C, add the evenly dissolved component C to the polymerization reactor, lock the manhole, add 2.4kg of component A to the polymerization reactor two minutes later, react for 10 minutes, and start to drop component A and component D at the same time after the temperature stabilizes. When 10% of component A remains, add component E to the remaining emulsion, stir evenly and drop. Component D needs to be added about 10 minutes later than component A. After the addition is completed, rinse with the reserved deionized water. The entire dropping process controls the dropping temperature to 86-88°C, the dropping time to 4.5 hours, and the stirring speed to 45-55 rpm; Step 5: After the addition is completed, keep warm for 1 hour, and the insulation temperature is controlled at 88-90°C; Step 6: After the heat preservation is completed, the polymerization reactor is cooled to 70°C, and component F is added to the polymerization reactor over 5 minutes. After 5 minutes, component G is added over 10 minutes, and the temperature is kept for half an hour; Step 7: Cool down to 40℃, add component H to the polymerization reactor, add alcohol ester 12 slowly, add it dropwise over 10 minutes, adjust the pH value to 8-9, stir for 15 minutes, take samples and test them, then filter and package them using a 200-mesh filter bag.

[0006] In a preferred embodiment, the ratio of methyl methacrylate, styrene, isooctyl acrylate, methacrylic acid, acrylamide, P-301, C-105 and deionized water in component A is 16072:3545:13119:544:461:574:989:11055.

[0007] In a preferred embodiment, the ratio of P-301 to deionized water in component B is 897:38270.

[0008] In a preferred embodiment, the ratio of potassium persulfate to deionized water in component C is 30:1182.

[0009] In a preferred embodiment, the ratio of potassium sulfate to deionized water in component D is 118:6182.

[0010] In a preferred embodiment, the ratio of tert-butyl hydroperoxide to deionized water in the component F is 23:592.

[0011] In a preferred embodiment, the ratio of bleaching powder to deionized water in component G is 16:548.

[0012] In a preferred embodiment, the ratio of P-620, ammonia water, alcohol ester dodecahydrate and deionized water in the component H is 9:592:883:1390.

[0013] Technical effects and advantages of the present invention: The present invention first prepares emulsion ingredients: component A, component B, component C, component D, component E, component F, component G and component H, wherein component A comprises methyl methacrylate, styrene, isooctyl acrylate, methacrylic acid, acrylamide, P-301, C-105 and deionized water, component B comprises P-301 and deionized water, component C comprises potassium persulfate and deionized water, component D comprises potassium sulfate and deionized water, component E comprises F-111, component F comprises tert-butyl hydroperoxide and deionized water, component G comprises bleaching powder and deionized water, and component H comprises P-620, ammonia water, alcohol ester twelve and deionized water, check the production equipment and the status of each valve, and deal with abnormal conditions in time to avoid affecting the emulsion production. Add the deionized water in component A to the large high-level tank, start stirring, add P-301 and acrylamide to the polymerization reactor, stir for 10 minutes, add styrene, methyl methacrylate, isooctyl acrylate, methacrylic acid to the large high-level tank in turn, emulsify C-105 for 20 minutes, add the deionized water and P-301 in component B to the polymerization reactor, heat the polymerization reactor to 84°C, and add the evenly dissolved Component C, lock the manhole, add 2.4kg component A to the polymerization reactor two minutes later, react for 10 minutes, and start to add component A and component D at the same time after the temperature stabilizes. When 10% of component A remains, add component E to the remaining emulsion, stir evenly and add. Component D needs to be added about 10 minutes later than component A. After the addition is completed, rinse with reserved deionized water. The entire dropping process controls the dropping temperature to 86-88℃, the dropping time to 4.5 hours, the stirring speed to 45-55 rpm, and after the addition is completed, keep warm for 1 hour, and the insulation temperature is controlled at 88-90℃. After the polymerization is completed, the polymerization kettle is cooled to 70°C, component F is added to the polymerization kettle, and the addition is completed within 5 minutes. After 5 minutes, component G is added within 10 minutes, and the mixture is kept warm for half an hour, and the temperature is lowered to 40°C. Component H is added to the polymerization kettle, and the alcohol ester twelve is slowly added, and the addition is completed within 10 minutes. The pH value is adjusted to 8-9, and after stirring for 15 minutes, a 200-mesh filter bag is used for filtering and packaging after sampling and testing. The acrylic emulsion paint film prepared by the present invention has good permeability, high gloss, excellent water whitening resistance, wet adhesion and weather resistance, and good compatibility stability for protecting adhesives, so the actual use effect is good. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] Example 1 The present invention provides a nano-scale acrylic emulsion production process, comprising the following steps: Step 1: prepare emulsion ingredients: component A, component B, component C, component D, component E, component F, component G and component H, component A includes methyl methacrylate, styrene, isooctyl acrylate, methacrylic acid, acrylamide, P-301, C-105 and deionized water, component B includes P-301 and deionized water, component C includes potassium persulfate and deionized water, component D includes potassium sulfate and deionized water, component E includes F-111, component F includes tert-butyl hydroperoxide and deionized water, component G includes bleaching powder and deionized water, and component H includes P-620, ammonia water, alcohol ester dodecahydrate and deionized water; Step 2: Check the production equipment and the condition of each valve, and handle any abnormalities in a timely manner to avoid affecting the emulsion production; Step 3: Add the deionized water in component A to the large header tank, start stirring, add P-301 and acrylamide to the polymerization reactor, stir for 10 minutes, then add styrene, methyl methacrylate, isooctyl acrylate, methacrylic acid, and C-105 to the large header tank in sequence and emulsify for 20 minutes; Step 4: Add the deionized water and P-301 in component B to the polymerization reactor, heat the polymerization reactor to 84°C, add the evenly dissolved component C to the polymerization reactor, lock the manhole, add 2.4kg of component A to the polymerization reactor two minutes later, react for 10 minutes, and start to drop component A and component D at the same time after the temperature stabilizes. When 10% of component A remains, add component E to the remaining emulsion, stir evenly and drop. Component D needs to be added about 10 minutes later than component A. After the addition is completed, rinse with the reserved deionized water. The entire dropping process controls the dropping temperature to 86°C, the dropping time to 4.5 hours, and the stirring speed to 45 rpm; Step 5: After the addition is completed, keep warm for 1 hour, and the insulation temperature is controlled at 88°C; Step 6: After the heat preservation is completed, the polymerization reactor is cooled to 70°C, and component F is added to the polymerization reactor over 5 minutes. After 5 minutes, component G is added over 10 minutes, and the temperature is kept for half an hour; Step 7: Cool down to 40℃, add component H to the polymerization reactor, add alcohol ester 12 slowly, add it dropwise over 10 minutes, adjust the pH value to 8, stir for 15 minutes, take samples and test them, then filter and package them using a 200-mesh filter bag.

[0016] The ratio of methyl methacrylate, styrene, isooctyl acrylate, methacrylic acid, acrylamide, P-301, C-105 and deionized water in component A is 16072:3545:13119:544:461:574:989:11055.

[0017] The ratio of P-301 to deionized water in component B is 897:38270.

[0018] The ratio of potassium persulfate to deionized water in the component C is 30:1182.

[0019] The ratio of potassium sulfate to deionized water in the component D is 118:6182.

[0020] The ratio of tert-butyl hydroperoxide to deionized water in the component F is 23:592.

[0021] The ratio of bleaching powder to deionized water in the component G is 16:548.

[0022] The ratio of P-620, ammonia water, alcohol ester dodecahydrate and deionized water in the component H is 9:592:883:1390.

[0023] The acrylic emulsion paint film prepared in this embodiment has better permeability, higher glossiness, excellent water whitening resistance, wet adhesion and weather resistance, and better compatibility stability for protecting adhesives. Therefore, compared with the prior art, the actual use effect is better.

[0024] Example 2 The present invention provides a nano-scale acrylic emulsion production process, comprising the following steps: Step 1: prepare emulsion ingredients: component A, component B, component C, component D, component E, component F, component G and component H, component A includes methyl methacrylate, styrene, isooctyl acrylate, methacrylic acid, acrylamide, P-301, C-105 and deionized water, component B includes P-301 and deionized water, component C includes potassium persulfate and deionized water, component D includes potassium sulfate and deionized water, component E includes F-111, component F includes tert-butyl hydroperoxide and deionized water, component G includes bleaching powder and deionized water, and component H includes P-620, ammonia water, alcohol ester dodecahydrate and deionized water; Step 2: Check the production equipment and the condition of each valve, and handle any abnormalities in a timely manner to avoid affecting the emulsion production; Step 3: Add the deionized water in component A to the large header tank, start stirring, add P-301 and acrylamide to the polymerization reactor, stir for 10 minutes, then add styrene, methyl methacrylate, isooctyl acrylate, methacrylic acid, and C-105 to the large header tank in sequence and emulsify for 20 minutes; Step 4: Add the deionized water and P-301 in component B to the polymerization reactor, heat the polymerization reactor to 84°C, add the evenly dissolved component C to the polymerization reactor, lock the manhole, add 2.4kg of component A to the polymerization reactor two minutes later, react for 10 minutes, and start to drip component A and component D at the same time after the temperature stabilizes. When 10% of component A remains, add component E to the remaining emulsion, stir evenly and drip. Component D needs to be dripped about 10 minutes later than component A. After the dripping is completed, rinse with the reserved deionized water. The dripping temperature of the entire dripping process is controlled to be 88°C, the dripping time is 4.5 hours, and the stirring speed is 55 rpm; Step 5: After the addition is completed, keep warm for 1 hour, and the insulation temperature is controlled at 90°C; Step 6: After the heat preservation is completed, the polymerization reactor is cooled to 70°C, and component F is added to the polymerization reactor over 5 minutes. After 5 minutes, component G is added over 10 minutes, and the temperature is kept for half an hour; Step 7: Cool down to 40℃, add component H to the polymerization reactor, add alcohol ester 12 slowly, add it dropwise over 10 minutes, adjust the pH value to 9, stir for 15 minutes, take samples and test them, then filter and package them using a 200-mesh filter bag.

[0025] The ratio of methyl methacrylate, styrene, isooctyl acrylate, methacrylic acid, acrylamide, P-301, C-105 and deionized water in component A is 16072:3545:13119:544:461:574:989:11055.

[0026] The ratio of P-301 to deionized water in component B is 897:38270.

[0027] The ratio of potassium persulfate to deionized water in the component C is 30:1182.

[0028] The ratio of potassium sulfate to deionized water in the component D is 118:6182.

[0029] The ratio of tert-butyl hydroperoxide to deionized water in the component F is 23:592.

[0030] The ratio of bleaching powder to deionized water in the component G is 16:548.

[0031] The ratio of P-620, ammonia water, alcohol ester dodecahydrate and deionized water in the component H is 9:592:883:1390.

[0032] The acrylic emulsion paint film prepared in this embodiment has better permeability, higher glossiness, excellent water whitening resistance, wet adhesion and weather resistance, and better compatibility stability for protecting adhesives. Therefore, compared with the prior art, the actual use effect is better.

[0033] The present invention first prepares emulsion ingredients: component A, component B, component C, component D, component E, component F, component G and component H, wherein component A comprises methyl methacrylate, styrene, isooctyl acrylate, methacrylic acid, acrylamide, P-301, C-105 and deionized water, component B comprises P-301 and deionized water, component C comprises potassium persulfate and deionized water, component D comprises potassium sulfate and deionized water, component E comprises F-111, component F comprises tert-butyl hydroperoxide and deionized water, component G comprises bleaching powder and deionized water, and component H comprises P-620, ammonia water, alcohol ester twelve and deionized water, check the production equipment and the status of each valve, and deal with abnormal conditions in time to avoid affecting the emulsion production. Add the deionized water in component A to the large high-level tank, start stirring, add P-301 and acrylamide to the polymerization reactor, stir for 10 minutes, add styrene, methyl methacrylate, isooctyl acrylate, methacrylic acid to the large high-level tank in turn, emulsify C-105 for 20 minutes, add the deionized water and P-301 in component B to the polymerization reactor, heat the polymerization reactor to 84°C, and add the evenly dissolved Component C, lock the manhole, add 2.4kg component A to the polymerization reactor two minutes later, react for 10 minutes, and start to add component A and component D at the same time after the temperature stabilizes. When 10% of component A remains, add component E to the remaining emulsion, stir evenly and add. Component D needs to be added about 10 minutes later than component A. After the addition is completed, rinse with reserved deionized water. The entire dropping process controls the dropping temperature to 86-88℃, the dropping time to 4.5 hours, the stirring speed to 45-55 rpm, and after the addition is completed, keep warm for 1 hour, and the insulation temperature is controlled at 88-90℃. After the polymerization is completed, the polymerization kettle is cooled to 70°C, component F is added to the polymerization kettle, and the addition is completed within 5 minutes. After 5 minutes, component G is added within 10 minutes, and the mixture is kept warm for half an hour, and the temperature is lowered to 40°C. Component H is added to the polymerization kettle, and the alcohol ester twelve is slowly added, and the addition is completed within 10 minutes. The pH value is adjusted to 8-9, and after stirring for 15 minutes, a 200-mesh filter bag is used for filtering and packaging after sampling and testing. The acrylic emulsion paint film prepared by the present invention has good permeability, high gloss, excellent water whitening resistance, wet adhesion and weather resistance, and good compatibility stability for protecting adhesives, so the actual use effect is good.

[0034] at last: Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A process for producing a nano-scale acrylic emulsion, characterized in that: The following steps are involved: Step 1: prepare emulsion ingredients: component A, component B, component C, component D, component E, component F, component G and component H, component A includes methyl methacrylate, styrene, isooctyl acrylate, methacrylic acid, acrylamide, P-301, C-105 and deionized water, component B includes P-301 and deionized water, component C includes potassium persulfate and deionized water, component D includes potassium sulfate and deionized water, component E includes F-111, component F includes tert-butyl hydroperoxide and deionized water, component G includes bleaching powder and deionized water, and component H includes P-620, ammonia water, alcohol ester dodecahydrate and deionized water; Step 2: Check the production equipment and the condition of each valve, and deal with any abnormalities in a timely manner to avoid affecting the emulsion production; Step 3: Add the deionized water in component A to the large header tank, start stirring, add P-301 and acrylamide to the polymerization reactor, stir for 10 minutes, then add styrene, methyl methacrylate, isooctyl acrylate, methacrylic acid, and C-105 to the large header tank in sequence and emulsify for 20 minutes; Step 4: Add the deionized water and P-301 in component B to the polymerization reactor, heat the polymerization reactor to 84°C, add the evenly dissolved component C to the polymerization reactor, lock the manhole, add 2.4kg of component A to the polymerization reactor two minutes later, react for 10 minutes, and start to drip component A and component D at the same time after the temperature stabilizes. When 10% of component A remains, add component E to the remaining emulsion, stir evenly and drip. Component D needs to be dripped about 10 minutes later than component A. After the dripping is completed, rinse with the reserved deionized water. The dripping temperature of the entire dripping process is controlled to be 86-88°C, the dripping time is 4.5 hours, and the stirring speed is 45-55 rpm; Step 5: After the addition is completed, keep warm for 1 hour, and the insulation temperature is controlled at 88-90°C; Step 6: After the heat preservation is completed, the polymerization reactor is cooled to 70°C, and component F is added to the polymerization reactor over 5 minutes. After 5 minutes, component G is added over 10 minutes, and the temperature is kept for half an hour; Step 7: Cool down to 40℃, add component H to the polymerization reactor, add alcohol ester 12 slowly, add it dropwise over 10 minutes, adjust the pH value to 8-9, stir for 15 minutes, take samples and test them, then filter and package them using a 200-mesh filter bag.

2. A nano-scale acrylic emulsion production process according to claim 1, characterized in that: The ratio of methyl methacrylate, styrene, isooctyl acrylate, methacrylic acid, acrylamide, P-301, C-105 and deionized water in component A is 16072:3545:13119:544:461:574:989:11055.

3. A nano-scale acrylic emulsion production process according to claim 1, characterized in that: The ratio of P-301 to deionized water in component B is 897:38270.

4. A nano-scale acrylic emulsion production process according to claim 1, characterized in that: The ratio of potassium persulfate to deionized water in the component C is 30:1182.

5. A process for producing a nano-scale acrylic emulsion according to claim 1, characterized in that: The ratio of potassium sulfate to deionized water in the component D is 118:6182.

6. A process for producing a nano-scale acrylic emulsion according to claim 1, characterized in that: The ratio of tert-butyl hydroperoxide to deionized water in the component F is 23:

592.

7. A process for producing a nano-scale acrylic emulsion according to claim 1, characterized in that: The ratio of bleaching powder to deionized water in the component G is 16:

548.

8. A process for producing a nano-scale acrylic emulsion according to claim 1, characterized in that: The ratio of P-620, ammonia water, alcohol ester dodecahydrate and deionized water in the component H is 9:592:883:1390.