Preparation method of novel rosin resin for paint

Abstract

The invention provides a preparation method of novel rosin resin for paint, and relates to the technical field of paint preparation. According to the preparation method of the novel rosin resin for the paint, the preparation method of the novel rosin resin for the paint is realized through preparation equipment of the novel rosin resin for the paint, and the preparation equipment of the novel rosin resin for the paint comprises a combined dehydration reflux kettle, the combined dehydration reflux kettle comprises an outer-layer kettle, a plurality of multi-stage inner kettles are nested in the outer-layer kettle, connecting rods are fixedly connected between the bottoms of the multi-stage inner kettles and the outer-layer kettle and between the bottoms of the multi-stage inner kettles on the outermost side and the outer-layer kettle, and the connecting rods are fixedly connected to the bottoms of the multi-stage inner kettles. Through a step-by-step release mode of the multi-stage inner kettles, the problem that long heating and dehydration reflux time is needed in the preparation process of the novel rosin resin is solved, and the preparation efficiency of the novel rosin resin is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of paint preparation, in particular to a method for preparing a novel rosin resin for paint. Background Art

[0002] The new rosin resin is different from the traditional rosin resin in that the traditional rosin resin (such as: tert-butyl phenolic resin, tert-octyl phenolic resin, modified alkyl phenolic resin, tert-phenol acetylene resin, rosin modified phenolic resin, petroleum resin, terpene resin) all use the steric hindrance effect of the aromatic ring or modified aromatic ring group on the molecular chain of the tackifying resin to achieve its tackifying effect, while the new rosin resin is to remove part or all of the phenolic hydroxyl groups, introduce a new substituent with a larger steric hindrance effect, and synthesize a new tackifying resin with a completely new structure. This resin has better water resistance and tear resistance than the rosin resin of the transmission, and can be widely used in plastics, paints, adhesives and other industries, with good economic benefits and market prospects.

[0003] However, the preparation time of this type of novel rosin resin is relatively long. Whether in the process of removing part or all of the phenolic hydroxyl groups of the rosin resin raw material or in the process of adding formaldehyde as a substituent for synthesis, it is necessary to remove water from the solution. In order to ensure that the raw materials participating in the reaction will not be denatured due to high temperature during the dehydration process, the heating temperature of dehydration is usually controlled below the lowest boiling point of the raw materials, which leads to a low heating temperature for dehydration. Therefore, in order to ensure that the solution is completely dehydrated, a long heating time is usually required to ensure that the solution is fully dehydrated, resulting in a long preparation cycle of the novel rosin resin. Therefore, personnel in this field have proposed a preparation method of a novel rosin resin for paint to solve the above-mentioned problems. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the present invention provides a method for preparing a novel rosin resin for paint, which solves the problem that the novel rosin resin requires a long heating and dehydration reflux time during the preparation process, and greatly improves the preparation efficiency of the novel rosin resin.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented by the following technical solutions: a method for preparing a new type of rosin resin for paint, the method for preparing the new type of rosin resin for paint is implemented by a preparation device for preparing the new type of rosin resin for paint, the preparation device for preparing the new type of rosin resin for paint comprises a combined dehydration reflux kettle, the combined dehydration reflux kettle comprises an outer kettle, a plurality of multi-stage inner kettles are nested in the outer kettle, a connecting rod is fixedly connected between the bottoms of the plurality of multi-stage inner kettles and the outermost multi-stage inner kettle and the outer kettle, a plurality of the connecting rods are fixedly connected to the bottoms of the plurality of multi-stage inner kettles, a discharge pipe is arranged at the bottom of the plurality of the multi-stage inner kettles and the outer kettle, an electric one-way valve is installed at the bottom of the plurality of the discharge pipes, a formaldehyde mixing kettle is fixedly connected to the middle position of the outer wall of the outer kettle, a discharge pipe is arranged at the bottom of the formaldehyde mixing kettle, an electric control valve is installed at the bottom of the discharge pipe, and a liquid level sensor is installed at one side of the bottom of the outer kettle;

[0008] A stirring assembly is installed in the middle position of the top of the outer kettle, a top condensation assembly is connected to one side of the top of the outer kettle, a solution adding assembly is connected to the other side of the top of the outer kettle, a formaldehyde quantitative addition assembly is connected to the front side wall and the other side of the outer wall of the formaldehyde mixing kettle, a floating heating assembly is arranged between the outer kettle and the outermost multi-stage inner kettle and at the bottom of the formaldehyde mixing kettle, a lower condensation assembly is connected to the other side tail vertebra of the top of the formaldehyde mixing kettle, and a control assembly is installed at the upper middle position of the front side wall of the outer kettle.

[0009] Preferably, the stirring assembly includes a stirring motor, a stirring rod is connected to the output shaft of the stirring motor, a stirring blade is installed at the bottom of the stirring rod, and the stirring blade is placed at the lower bottom of the innermost multi-stage inner kettle.

[0010] Preferably, the top condensation assembly includes an outer connecting pipe, one end of which is connected to one side of the top of the outer kettle, and the other end of which is connected to a top water storage tank, and a top condensation pipe is sleeved on the top of the top water storage tank.

[0011] Preferably, the solution adding assembly includes a solution adding tank, which is fixedly connected to the top of the outer kettle on the other side, and a manual valve is installed in the middle of the connecting pipe opening between the solution adding tank and the outer kettle. The manual valve and the connecting pipe opening between the solution adding tank and the outer kettle are arranged inside the outer kettle, and one end of the drainage pipe is sleeved with the drainage pipe, and the other end of the drainage pipe is arranged above the innermost multi-stage inner kettle.

[0012] Preferably, the lower condensation assembly includes a mixing kettle connecting pipe, one end of which is fixedly connected to the top of the formaldehyde mixing kettle on the other side, and the other end of which is fixedly connected to a lower water storage tank, and the top of the lower water storage tank is sleeved with a lower condensation pipe.

[0013] Preferably, the formaldehyde quantitative dosing component includes a formaldehyde storage tank, a adding port is provided at the front position of the top of the formaldehyde storage tank, an extraction pump is installed at the other side position of the top of the formaldehyde storage tank, a leather hose connected to the input end of the extraction pump leads to the bottom of the formaldehyde storage tank, a formaldehyde adding pipe is connected to the output end of the extraction pump, and the other end of the formaldehyde adding pipe is fixedly connected to the upper position of the other side wall of the formaldehyde storage tank.

[0014] Preferably, the floating heating assembly comprises an arc-shaped heating plate, and a floating airbag is connected to the top of the arc-shaped heating plate.

[0015] Preferably, the control component includes a control mounting frame, a controller is installed inside the control mounting frame, a sensor connecting elbow is fixedly connected to the top of the inner wall of the outer kettle and the upper end of the inner wall of the formaldehyde mixing kettle, a temperature sensor is installed at the other end of the two sensor connecting elbows, and the controller is electrically connected to the two temperature sensors, the extraction pump, the liquid level sensor, the arc heating plate, several electric one-way valves, and the electric control valve.

[0016] The preparation method of the novel rosin resin of the paint comprises the following steps:

[0017] S1. Mix the raw materials, open the manual valve and put tert-butylphenol, rosin acid, toluene and sulfuric acid into the solution adding tank according to the weight ratio of tert-butylphenol: rosin acid: toluene: sulfuric acid of 5:6:18:0.1. Tert-butylphenol, rosin acid, toluene and sulfuric acid will enter the innermost multi-stage inner kettle. At this time, several electric one-way valves are kept in the closed state, and then the stirring component is started, and the stirring fan blades are driven by the stirring motor to rotate to mix the solution;

[0018] S2. After the solution is heated and stirring is completed, the stirring motor stops rotating, and except for the electric one-way valve at the bottom, the other electric one-way valves are opened, and the solution flows into the multi-stage inner kettle and the outer kettle, and the solution heights of the multi-stage inner kettle and the outer kettle are kept at the same level. Then, under the influence of the buoyancy of the solution, the floating heating component located in the outer kettle floats to the top of the solution in the outer kettle, and the floating heating component is controlled by the controller to heat the solution, and with the cooperation of the temperature sensor in the outer kettle, the solution temperature is maintained within the range of 150°C;

[0019] S3. Part of the solution is refluxed for dehydration. The solution between the outer kettle and the outermost multi-stage inner kettle will be dehydrated first because it is closer to the heat source. The water vapor flows into the top condensation assembly, and is condensed and liquefied through the top condenser pipe and stored in the top water storage tank. Then, the bottom electric one-way valve is opened, and the solution between the outer kettle and the outermost multi-stage inner kettle is placed in the formaldehyde mixing kettle. Then, the bottom electric one-way valve is closed, and the remaining electric one-way valves are opened to release the internal solution to the outside.

[0020] S4. Reflux dehydration of all solutions, repeating step S3 several times until all solutions are refluxed and dehydrated;

[0021] S5. Reflux dehydration after adding formaldehyde and mixing the solution. As the outermost part of the solution in S3 falls into the formaldehyde mixing kettle, the liquid level sensor detects the height of the fallen solution, and calculates the volume of the solution falling into the formaldehyde mixing kettle according to the volume of the formaldehyde mixing kettle. Then, according to the volume of the solution, the controller controls the extraction pump to extract formaldehyde solution in proportion to the volume of the solution and add it into the formaldehyde mixing kettle. Then, the controller controls the heating of the formaldehyde in the formaldehyde mixing kettle, and with the cooperation of the temperature sensor in the formaldehyde mixing kettle, controls the temperature of the solution after the formaldehyde is mixed to about 100°C, and adds the formaldehyde solution again after each new solution is added, until all the solutions have completed the reflux dehydration work after the formaldehyde solution is added;

[0022] S6. Neutralization of the mixed solution. When all the solutions have been refluxed and dehydrated, open the electric control valve, take out all the solutions, add NaOH solution for neutralization, and distill and dehydrate the volatiles under negative pressure conditions of 0.05-0.08 MPa and 200-210°C in the kettle. After 30-35 minutes, take a sample to measure the softening point. When it reaches 125-155°C, discharge the material to obtain a new rosin resin for paint.

[0023] (III) Beneficial effects

[0024] The present invention provides a method for preparing a novel rosin resin for paint, which has the following technical points and beneficial effects:

[0025] The method divides the solution to be dehydrated and refluxed into multiple parts by setting up a multi-stage inner kettle. Since the solution on the outside completes the dehydration and reflux part first, it is first placed in the formaldehyde mixing kettle for formaldehyde mixing and reflux dehydration, and the solution located in the inner part is then placed in the outermost multi-stage inner kettle for heating and reflux dehydration. At this time, since the solution flows to the outside, the speed of reflux dehydration is increased. In this way, the heating time of the solution can be greatly reduced, and the preparation efficiency of the new rosin resin is greatly improved. The floating heating component can change with the change of the liquid level, which can prevent the heater from heating the air first, and then the air heats the solution through heat conduction, thereby improving the heating efficiency of the solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 A top view of the present invention;

[0028] Figure 3 for Figure 2 Isometric section view along AA;

[0029] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0030] Figure 5 It is a schematic diagram of the internal structure of the present invention.

[0031] Among them, 100, combined dehydration reflux kettle; 200, stirring assembly; 300, top condensation assembly; 400, solution addition assembly; 500, lower condensation assembly; 600, formaldehyde quantitative addition assembly; 7, temperature sensor; 8, sensor connection elbow; 900, floating heating assembly; 1000, control assembly;

[0032] 101, outer kettle; 102, formaldehyde mixing kettle; 103, multi-stage inner kettle; 104, discharge pipe; 105, electric one-way valve; 106, connecting rod; 107, discharge pipe; 108, electric control valve; 109, liquid level sensor;

[0033] 201, stirring motor; 202, stirring rod; 203, stirring fan blade;

[0034] 301, top condenser pipe; 302, outer connecting pipe; 303, top water storage tank;

[0035] 401, solution adding tank; 402, manual valve; 403, drainage tube;

[0036] 501, mixing kettle connecting pipe; 502, lower condenser pipe; 503, lower water storage tank;

[0037] 601, formaldehyde adding pipe; 602, extraction pump; 603, adding port; 604, formaldehyde storage tank;

[0038] 901, floating airbag; 902, arc heating plate;

[0039] 1001. Control mounting frame; 1002. Controller. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0041] Embodiment 1:

[0042] like Figure 1-5 As shown, an embodiment of the present invention provides a method for preparing a novel rosin resin for paint, and the method for preparing a novel rosin resin for paint is implemented by a preparation device for preparing a novel rosin resin for paint. The preparation device for preparing a novel rosin resin for paint includes a combined dehydration reflux kettle 100, and the combined dehydration reflux kettle 100 includes an outer kettle 101, and a plurality of multi-stage inner kettles 103 are nested in the outer kettle 101, and connecting rods 106 are fixedly connected between the bottoms of the plurality of multi-stage inner kettles 103 and the outermost multi-stage inner kettles 103 and the outer kettle 101, and the plurality of connecting rods 106 are fixedly connected to the bottoms of the plurality of multi-stage inner kettles 103, and the plurality of multi-stage inner kettles 103 and the outer kettle A discharge pipe 104 is provided at the bottom of each of the discharge pipes 104, and an electric one-way valve 105 is installed at the bottom of each of the discharge pipes 104. A formaldehyde mixing kettle 102 is fixedly connected to the middle position of the outer wall of the outer kettle 101, a discharge pipe 107 is provided at the bottom of the formaldehyde mixing kettle 102, and an electric control valve 108 is installed at the bottom of the discharge pipe 107. A liquid level sensor 109 is installed at one side of the bottom of the outer kettle 101. After each solution enters the outer kettle formaldehyde mixing kettle 102, the liquid level sensor 109 measures the solution height, and calculates the volume of the formaldehyde mixing kettle 102 each time according to the volume of the formaldehyde mixing kettle 102, and the formaldehyde content to be added is obtained according to the volume of the solution entering.

[0043] A stirring assembly 200 is installed in the middle position of the top of the outer kettle 101, a top condensation assembly 300 is connected to one side of the top of the outer kettle 101, a solution adding assembly 400 is connected to the other side of the top of the outer kettle 101, a formaldehyde quantitative addition assembly 600 is connected to the front side wall and the other side of the outer wall of the formaldehyde mixing kettle 102, a floating heating assembly 900 is arranged between the outer kettle 101 and the outermost multi-stage inner kettle 103 and at the bottom of the formaldehyde mixing kettle 102, a lower condensation assembly 500 is connected to the other side of the tail vertebra of the top of the formaldehyde mixing kettle 102, and a control assembly 1000 is installed in the middle of the upper front side wall of the outer kettle 101.

[0044] The stirring assembly 200 includes a stirring motor 201, a stirring rod 202 is connected to the output shaft of the stirring motor 201, a stirring blade 203 is installed at the bottom of the stirring rod 202, and the stirring blade 203 is placed at the lower bottom of the innermost multi-stage inner kettle 103. The stirring motor 201 drives the stirring rod 202 to rotate, thereby driving the stirring blade to rotate. After each addition of a solution that needs to be heated, dehydrated and refluxed, it is first mixed and stirred in the innermost multi-stage inner kettle 103. After the stirring is completed, the solution is released into each multi-stage inner kettle 103.

[0045] The top condensation assembly 300 includes an outer connecting pipe 302, one end of which is connected to one side of the top of the outer kettle 101, and the other end of the outer connecting pipe 302 is connected to a top water storage tank 303, and the top of the top water storage tank 303 is sleeved with a top condensation pipe 301.

[0046] The solution adding component 400 includes a solution adding tank 401, which is fixedly connected to the top of the outer kettle 101 on the other side, and a manual valve 402 is installed in the middle of the connecting pipe mouth between the solution adding tank 401 and the outer kettle 101. The manual valve 402 and the connecting pipe mouth between the solution adding tank 401 and the outer kettle 101 are arranged inside the outer kettle 101, and one end of the manual valve 402 is sleeved with a drainage pipe 403, and the other end of the drainage pipe 403 is arranged above the innermost multi-stage inner kettle 103.

[0047] The lower condensation component 500 includes a mixing kettle connecting pipe 501, one end of which is fixedly connected to the top of the formaldehyde mixing kettle 102 on the other side, and the other end of the mixing kettle connecting pipe 501 is fixedly connected to a lower water storage tank 503, and the top of the lower water storage tank 503 is sleeved with the lower condensation pipe 502.

[0048] The formaldehyde quantitative dosing component 600 includes a formaldehyde storage tank 604, a adding port 603 is provided at the front position of the top of the formaldehyde storage tank 604, an extraction pump 602 is installed at the other side of the top of the formaldehyde storage tank 604, the leather hose connected to the input end of the extraction pump 602 passes to the bottom of the formaldehyde storage tank 604, and the output end of the extraction pump 602 is connected to a formaldehyde adding pipe 601, and the other end of the formaldehyde adding pipe 601 is fixedly connected to the upper position of the other side wall of the formaldehyde storage tank 604.

[0049] The floating heating assembly 900 includes an arc-shaped heating plate 902 , and a floating airbag 901 is connected to the top of the arc-shaped heating plate 902 .

[0050] The control component 1000 includes a control mounting frame 1001, and a controller 1002 is installed inside the control mounting frame 1001. The inner wall of the outer kettle 101 near the top and the inner wall of the formaldehyde mixing kettle 102 near the upper end are fixedly connected with a sensor connecting elbow 8, and the other ends of the two sensor connecting elbows 8 are installed with temperature sensors 7. The controller 1002 is electrically connected to the two temperature sensors 7, the extraction pump 602, the liquid level sensor 109, the arc heating plate 902, a plurality of electric one-way valves 105, and the electric control valve 108.

[0051] The preparation method of the novel rosin resin for paint comprises the following steps:

[0052] S1. Mix the raw materials, open the manual valve 402 and put tert-butylphenol, rosin acid, toluene and sulfuric acid into the solution adding tank 401 in the weight ratio of tert-butylphenol: rosin acid: toluene: sulfuric acid of 5:6:18:0.1, tert-butylphenol, rosin acid, toluene and sulfuric acid will enter the innermost multi-stage inner kettle 103, at this time, several electric one-way valves 105 are kept in the closed state, and then the stirring assembly 200 is started, and the stirring fan blade 203 is driven by the stirring motor 201 to rotate to mix the solution;

[0053] S2. After the solution is heated and the stirring is completed, the stirring motor 201 stops rotating, and except for the electric one-way valve 105 at the bottom, the other electric one-way valves 105 are opened, and the solution flows into the multi-stage inner kettle 103 and the outer kettle 101, and the solution heights of the multi-stage inner kettles 103 and the outer kettle 101 are kept at the same level. Then, under the influence of the buoyancy of the solution, the floating heating component 900 located in the outer kettle 101 floats to the top of the solution in the outer kettle 101, and the floating heating component 900 is controlled by the controller 1002 to heat the solution, and with the cooperation of the temperature sensor 7 in the outer kettle 101, the solution temperature is maintained within the range of 150°C;

[0054] S3. Part of the solution is refluxed for dehydration. The solution between the outer kettle 101 and the outermost multi-stage inner kettle 103 is closer to the heat source and will be dehydrated first. The water vapor flows into the top condensation assembly 300, and is condensed and liquefied through the top condensation pipe 301 and stored in the top water storage tank 303. Then, the bottom electric one-way valve 105 is opened, and the solution between the outer kettle 101 and the outermost multi-stage inner kettle 103 is placed in the formaldehyde mixing kettle 102. Then, the bottom electric one-way valve 105 is closed, and the remaining electric one-way valves 105 are opened to release the internal solution to the outside.

[0055] S4. Reflux dehydration of all solutions, repeating step S3 several times until all solutions are refluxed and dehydrated;

[0056] S5. Reflux dehydration after adding formaldehyde and mixing solution. As the outermost part of the solution in S3 falls into the formaldehyde mixing kettle 102, the liquid level sensor 109 detects the height of the fallen solution, and calculates the volume of the solution falling into the formaldehyde mixing kettle 102 according to the volume of the formaldehyde mixing kettle 102. Then, according to the volume of the solution, the controller 1002 controls the extraction pump 602 to extract formaldehyde solution in proportion to the volume of the solution and add it to the formaldehyde mixing kettle 102. Then, the controller 1002 controls the heating of the formaldehyde in the formaldehyde mixing kettle 102, and with the cooperation of the temperature sensor 7 in the formaldehyde mixing kettle 102, controls the temperature of the solution after the formaldehyde is mixed to be about 100°C, and adds the formaldehyde solution again after each new solution is added, until all the solutions have completed the reflux dehydration work after the formaldehyde solution is added;

[0057] S6. Neutralization of the mixed solution. When all the solutions have been refluxed and dehydrated, open the electric control valve 108, take out all the solutions, add NaOH solution for neutralization, and distill and dehydrate the volatiles under negative pressure conditions of 0.05-0.08 MPa and 200-210°C in the kettle. After 30-35 minutes, take a sample to measure the softening point. When it reaches 125-155°C, discharge the material to obtain a new rosin resin for paint.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a novel rosin resin for paint, characterized in that: The preparation method of the novel rosin resin for paint is realized by a preparation device for the novel rosin resin for paint. The preparation device for the novel rosin resin for paint comprises a combined dehydration reflux kettle (100), wherein the combined dehydration reflux kettle (100) comprises an outer kettle (101), wherein a plurality of multi-stage inner kettles (103) are nested in the outer kettle (101), and connecting rods (106) are fixedly connected between the bottoms of the plurality of multi-stage inner kettles (103) and the outermost multi-stage inner kettles (103) and the outer kettle (101), and the plurality of connecting rods (106) are fixedly connected to the outer kettle (101). At the bottom of the plurality of multi-stage inner kettles (103), the bottoms of the plurality of multi-stage inner kettles (103) and the outer kettle (101) are all provided with discharge pipes (104), the bottoms of the plurality of discharge pipes (104) are all provided with electric one-way valves (105), a formaldehyde mixing kettle (102) is fixedly connected to the middle of the outer wall of the outer kettle (101), a discharge pipe (107) is provided at the bottom of the formaldehyde mixing kettle (102), an electric control valve (108) is installed at the bottom of the discharge pipe (107), and a liquid level sensor (109) is installed at one side of the bottom of the outer kettle (101); A stirring assembly (200) is installed at the middle position of the top of the outer kettle (101); a top condensation assembly (300) is connected to one side of the top of the outer kettle (101); a solution addition assembly (400) is connected to the other side of the top of the outer kettle (101); a formaldehyde quantitative addition assembly (600) is connected to the front side wall and the other side of the outer side wall of the formaldehyde mixing kettle (102); a floating heating assembly (900) is arranged between the outer kettle (101) and the outermost multi-stage inner kettle (103) and at the bottom of the formaldehyde mixing kettle (102); a lower condensation assembly (500) is connected to the other side of the tail vertebra of the top of the formaldehyde mixing kettle (102); and a control assembly (1000) is installed at the upper middle position of the front side wall of the outer kettle (101).

2. The method for preparing a novel rosin resin for paint according to claim 1, characterized in that: The stirring assembly (200) comprises a stirring motor (201), the output shaft of the stirring motor (201) is connected to a stirring rod (202), the bottom of the stirring rod (202) is provided with a stirring blade (203), and the stirring blade (203) is placed at the bottom of the innermost multi-stage inner kettle (103).

3. The method for preparing a novel rosin resin for paint according to claim 1, characterized in that: The top condensation assembly (300) includes an outer connecting pipe (302), one end of which is connected to one side of the top of the outer kettle (101), and the other end of which is connected to a top water storage tank (303), and the top of the top water storage tank (303) is sleeved with a top condensation pipe (301).

4. The method for preparing a novel rosin resin for paint according to claim 1, characterized in that: The solution adding assembly (400) comprises a solution adding tank (401), wherein the solution adding tank (401) is fixedly connected to the top of the outer kettle (101) at the other side, and a manual valve (402) is installed in the middle of the connecting pipe opening between the solution adding tank (401) and the outer kettle (101), and one end of the manual valve (402) and the connecting pipe opening between the solution adding tank (401) and the outer kettle (101) is arranged inside the outer kettle (101) and is sleeved with a drainage pipe (403), and the other end of the drainage pipe (403) is arranged above the innermost multi-stage inner kettle (103).

5. The method for preparing a novel rosin resin for paint according to claim 1, characterized in that: The lower condensation component (500) includes a mixing kettle connecting pipe (501), one end of which is fixedly connected to the top of the formaldehyde mixing kettle (102) on the other side, and the other end of which is fixedly connected to a lower water storage tank (503), and the top of the lower water storage tank (503) is sleeved with a lower condensation pipe (502).

6. The method for preparing a novel rosin resin for paint according to claim 1, characterized in that: The formaldehyde quantitative dosing component (600) comprises a formaldehyde storage tank (604), a adding port (603) is arranged at the front side of the top of the formaldehyde storage tank (604), an extraction pump (602) is installed at the other side of the top of the formaldehyde storage tank (604), a leather hose connected to the input end of the extraction pump (602) leads to the bottom of the formaldehyde storage tank (604), a formaldehyde adding pipe (601) is connected to the output end of the extraction pump (602), and the other end of the formaldehyde adding pipe (601) is fixedly connected to the other side wall of the formaldehyde storage tank (604) at the upper side.

7. The method for preparing a novel rosin resin for paint according to claim 6, characterized in that: The floating heating component (900) comprises an arc-shaped heating plate (902), and a floating airbag (901) is connected to the top of the arc-shaped heating plate (902).

8. The method for preparing a novel rosin resin for paint according to claim 7, characterized in that: The control assembly (1000) comprises a control mounting frame (1001), a controller (1002) is installed inside the control mounting frame (1001), a sensor connecting elbow (8) is fixedly connected to the top of the inner wall of the outer kettle (101) and the upper end of the inner wall of the formaldehyde mixing kettle (102), the other ends of the two sensor connecting elbows (8) are installed with temperature sensors (7), and the controller (1002) is electrically connected to the two temperature sensors (7), the extraction pump (602), the liquid level sensor (109), the arc heating plate (902), a plurality of electric one-way valves (105), and the electric control valve (108).

9. A method for preparing a novel rosin resin for paint according to claims 1-8, characterized in that: The preparation method of the novel rosin resin of the paint comprises the following steps: S1. Mix the raw materials, open the manual valve (402) and add tert-butylphenol, rosin acid, toluene and sulfuric acid into the solution adding tank (401) in a weight ratio of tert-butylphenol: rosin acid: toluene: sulfuric acid of 5:6:18:0.

1. The tert-butylphenol, rosin acid, toluene and sulfuric acid will enter the innermost multi-stage inner kettle (103). At this time, the several electric one-way valves (105) are kept in the closed state, and then the stirring component (200) is started, and the stirring fan blade (203) is driven by the stirring motor (201) to rotate to mix the solution; S2. After the solution is heated and stirring is completed, the stirring motor (201) stops rotating, and except for the electric one-way valve (105) at the bottom, the other electric one-way valves (105) are opened, and the solution flows into the multi-stage inner kettle (103) and the outer kettle (101), and the solution heights of the multi-stage inner kettles (103) and the outer kettle (101) are kept at the same level. Then, under the influence of the buoyancy of the solution, the floating heating component (900) located in the outer kettle (101) floats to the top of the solution in the outer kettle (101), and the floating heating component (900) is controlled by the controller (1002) to heat the solution, and with the cooperation of the temperature sensor (7) in the outer kettle (101), the temperature of the solution is maintained within the range of 150° C.; S3. Part of the solution is refluxed for dehydration. The solution between the outer kettle (101) and the outermost multi-stage inner kettle (103) is closer to the heat source and will be dehydrated first. The water vapor flows into the top condensation component (300), and is condensed and liquefied through the top condensation pipe (301) and stored in the top water storage tank (303). Then, the bottom electric one-way valve (105) is opened, and the solution between the outer kettle (101) and the outermost multi-stage inner kettle (103) is placed in the formaldehyde mixing kettle (102). Then, the bottom electric one-way valve (105) is closed, and the remaining electric one-way valves (105) are opened to release the internal solution to the outside. S4. Reflux dehydration of all solutions, repeating step S3 several times until all solutions are refluxed and dehydrated; S5. Addition of formaldehyde and reflux dehydration of the mixed solution. As the outermost part of the solution in S3 falls into the formaldehyde mixing kettle (102), the liquid level sensor (109) detects the height of the fallen solution, and calculates the volume of the solution falling into the formaldehyde mixing kettle (102) according to the volume of the solution. Then, according to the volume of the solution, the controller (1002) controls the extraction pump (602) to extract formaldehyde solution in proportion to the volume of the solution and adds it to the formaldehyde mixing kettle (102). Then, the controller (1002) controls the heating of the formaldehyde in the formaldehyde mixing kettle (102), and controls the temperature of the solution after the formaldehyde is mixed to about 100° C. with the cooperation of the temperature sensor (7) in the formaldehyde mixing kettle (102). After each new solution is added, the formaldehyde solution is added again until all the solutions have completed the reflux dehydration work after the formaldehyde solution is added. S6. Neutralization of the mixed solution. When all the solutions have been refluxed and dehydrated, open the electric control valve (108), take out all the solutions, add NaOH solution for neutralization, and distill and dehydrate the volatiles under negative pressure conditions of 0.05-0.08 MPa and 200-210° C. in a kettle to remove the volatiles. After 30-35 minutes, take a sample and measure the softening point. When it reaches 125-155° C., discharge the material to obtain a new rosin resin for paint.

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