CN113093481A - Developing additive and preparation method and application thereof - Google Patents
Developing additive and preparation method and application thereof Download PDFInfo
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- CN113093481A CN113093481A CN202110277163.4A CN202110277163A CN113093481A CN 113093481 A CN113093481 A CN 113093481A CN 202110277163 A CN202110277163 A CN 202110277163A CN 113093481 A CN113093481 A CN 113093481A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
- G03F7/325—Non-aqueous compositions
- G03F7/327—Non-aqueous alkaline compositions, e.g. anhydrous quaternary ammonium salts
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Abstract
The invention belongs to the field of developing chemical reagents, and discloses a developing additive, and a preparation method and application thereof. The raw material components for preparing the developing additive comprise: modified cellulose salt, water-soluble derivatives of vitamin E, bentonite and solvent; the modified cellulose salt is obtained by modifying carboxymethyl cellulose salt with fatty acid and chlorinating agent. According to the invention, the development additive prepared by modifying the cellulose salt, the vitamin E polyethylene glycol succinate and the bentonite can prevent unexposed substances from further polymerizing, and the unexposed polymerized substances, such as photosensitive ink, are isolated and wrapped and are discharged through overflow of the tank body, so that the tank body is prevented from being stuck on equipment such as tank walls, rollers, pipelines and plate surfaces, the tank body can be cleaned, the product yield is improved, and the production cost is reduced.
Description
Technical Field
The invention belongs to the field of developing chemical reagents, and particularly relates to a developing additive and a preparation method and application thereof.
Background
Development is a process of making an image appear in the printing, photocopying, copying, blueprinting, and other industries. And (3) washing the photosensitive material which does not undergo photopolymerization reaction by the action of alkali liquor, wherein the development comprises positive development and reversal development.
In the manufacturing process of a PCB (printed circuit board), there is a developing process for developing the unexposed portion of the dry film (or wet film, ink) on the copper surface of the PCB. The general developing solution mainly comprises 0.8-2% sodium carbonate solution, and the developing temperature is 30-40 deg.C. The developing mechanism is that the active groups of the unexposed part of the photosensitive film react with the developing solution to generate soluble substances to be dissolved, and the active groups of carboxyl-COOH and Na in the sodium carbonate solution are dissolved during developing+By the action of the hydrophilic group-COONa, the unexposed portion is dissolved, and the dry film of the exposed portion is not swollen. The development operation is generally carried out in a developing machine, and the development parameters such as the temperature, the conveying speed, the spraying pressure and the like of the developing solution are controlled, so that a good development effect can be obtained.
In the PCB developing process, the dry film, wet film or printing ink and other waste residues obtained by developing have strong viscosity, so that the tank body, the pipeline, the roller and other equipment are easily polluted, and the anti-adhesion problem is caused. Meanwhile, due to stubborn stains and precipitates caused by long-term maintenance of the developing tank by enterprise staff, the serious problems of high quality reject ratio, dirty tank body, poor production environment and the like are brought to the developing process in the PCB production process.
In order to ensure the production quality as much as possible, most enterprises increase the maintenance force and increase the maintenance frequency; the problems cannot be fundamentally solved even if the organic tank cleaning agent and a large amount of acid and alkali are used for cleaning, and further the problems of low production efficiency of enterprises, great increase of wastewater discharge, environmental pollution of wastewater, high production cost of enterprises and the like are caused.
Therefore, it is needed to provide a new chemical reagent, so that the development process is not prone to generate highly viscous waste residues, the problem that the tank body, the pipeline, the roller and other equipment are stuck by various waste residues and need to be cleaned by an organic tank cleaning agent and a large amount of acid and alkali is solved, and the discharge of a large amount of waste water is further avoided.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. Therefore, the invention provides a developing additive, a preparation method and an application thereof, wherein the developing additive can isolate and wrap developed unsaturated group substances and other unexposed polymerization substances, such as photosensitive ink, and the unexposed polymerization substances are overflowed and discharged through a groove body, so that the unexposed polymerization substances (such as the photosensitive ink) are prevented from polymerizing under the action of light and temperature, and then the unexposed polymerization substances are adhered to equipment such as groove walls, rollers, pipelines, plate surfaces and the like, and the groove body can be cleaned. The problems of poor product quality such as PCB surface appearance, plating resistance and the like caused by adhesive reversion can be effectively avoided, and the product yield is improved. The developing additive is applied to the production process of the PCB, so that the equipment maintenance frequency and the equipment maintenance working hours can be reduced, and the productivity is further improved. In contrast, the amount of wastewater is reduced, and the production cost is further reduced and the product quality is improved.
The invention conception of the invention is as follows: the developing additive disclosed by the invention uses the raw material components of modified cellulose salt, vitamin E polyethylene glycol succinate (TPGS) and bentonite, can prevent unexposed substances from further polymerizing, isolates and wraps the unexposed polymerized substances, such as photosensitive ink, and overflows and is discharged from a tank body, so that the effect of preventing the unexposed polymerized substances (such as photosensitive ink) from polymerizing under the action of light and temperature is achieved, and the tank body is prevented from being stuck to equipment such as tank walls, rollers, pipelines and plate surfaces, and can be cleaned. The problems of poor product quality such as PCB surface appearance, plating resistance and the like caused by adhesive reversion can be effectively avoided, and the product yield is improved. The developing additive is applied to the production process of the PCB, so that the equipment maintenance frequency and the equipment maintenance working hours can be reduced, and the productivity is further improved. In contrast, the amount of wastewater is reduced, and the production cost is further reduced and the product quality is improved.
In the developing process, when the polymer is polymerized on equipment, the polymer is named as 'Sludge', and when the polymer is polymerized on a production plate surface, the polymer is named as 'Scum'. The developing additive can effectively reduce the generation of Sludge, reduce the defects caused by Sludge reverse adhesion, reduce the maintenance frequency and the maintenance working hour, and further improve the productivity.
In addition, the developing additive has a double-ionization-layer structure, and can block the excellent performance of metal ion catalysis, so that the adverse effect of metal ions can be eliminated, and the peptization and emulsification effects are further improved.
A first aspect of the invention provides a developer additive.
Specifically, the raw material components for preparing the developing additive comprise: modified cellulose salt, water-soluble derivatives of vitamin E, bentonite and solvent;
the modified cellulose salt is obtained by modifying carboxymethyl cellulose salt with fatty acid and chlorinating agent.
Preferably, the modified cellulose salt is modified sodium cellulose, modified cellulose potassium or modified cellulose calcium; more preferably, the modified cellulose salt is modified sodium cellulose. The effect of adopting the modified sodium cellulose for preventing substances such as photosensitive ink from polymerizing is better than that of modified cellulose potassium or modified cellulose calcium.
Preferably, the modified cellulose salt is modified sodium carboxymethylcellulose (M-CMC-Na).
Preferably, the water-soluble derivative of vitamin E is vitamin E polyethylene glycol succinate (TPGS).
Preferably, the Bentonite is at least one of sodium Bentonite (Na-Bentonite), potassium Bentonite or calcium Bentonite; preferably, the bentonite is sodium bentonite. In the process of preparing the developing additive by adopting the sodium bentonite, the dispersing performance is better, the sediment is not easy to generate, and the reaction rate for preparing the developing additive is higher.
Preferably, the solvent is water; further preferably, the solvent is deionized water.
Preferably, the raw material component for preparing the developing additive further comprises at least one of a surfactant, a stabilizer or a metal catalyst; further preferably, the surfactant is selected from at least one of polyoxyethylene octyl phenol ether (TX-10), glyceryl monostearate or cetearyl glucoside; more preferably, the surfactant is polyoxyethylene octylphenol ether (TX-10). The polyoxyethylene octylphenol ether may allow for a faster reaction rate for preparing the developer additive, and may also have the effect of providing for an enhanced stabilizer of the developer additive in the mixture comprising the developer solution.
Preferably, the stabilizer is gluconate; further preferably, the stabilizer is sodium gluconate. Sodium gluconate has the effect of enhancing the stabilizer of the developer additive in the mixture comprising the developer solution.
Preferably, the developing additive comprises the following raw material components in parts by weight: 3-15 parts of modified cellulose salt, 4-25 parts of water-soluble derivatives of vitamin E, 0.1-5 parts of bentonite and 30-140 parts of solvent.
Further preferably, the developing additive comprises the following raw material components in parts by weight: 4-12 parts of modified cellulose salt, 6-19 parts of water-soluble derivatives of vitamin E, 0.1-3 parts of bentonite and 40-120 parts of solvent.
Preferably, the raw material components for preparing the developing additive also comprise 5-40 parts of a surfactant; further preferably, the raw material components for preparing the developing additive also comprise 10-30 parts of surfactant.
Preferably, the raw material components for preparing the developing additive also comprise 0.1-20 parts of a stabilizer; further preferably, the raw material components for preparing the developing additive also comprise 0.1-15 parts of a stabilizer.
A second aspect of the present invention provides a process for the preparation of the above-described developer additive.
A method of preparing a developer additive, comprising the steps of:
(1) stirring and mixing a solvent and bentonite, adding a modified cellulose salt, adding a metal catalyst, and reacting to obtain an intermediate product;
(2) and (2) stirring and mixing the solvent and the water-soluble derivative of the vitamin E, then adding the intermediate product prepared in the step (1), and reacting to prepare the developing additive.
Preferably, in the step (1), the preparation method of the modified cellulose salt is as follows: fatty acid and a chlorinating agent react in the environment of liquid hydrocarbon to generate a substance containing an acyl chloride structure, and then carboxymethyl cellulose salt is added to react to prepare the modified cellulose salt.
Preferably, in the preparation method of the modified cellulose salt, the chlorinating agent is sufficient, and the amount of the fatty acid and the amount of the carboxymethyl cellulose salt can be selected according to the amount of the modified cellulose salt to be prepared. For example, in the case of a sufficient amount of the chlorinating agent, the amount of the fatty acid and the carboxymethyl cellulose salt is in the range of 0.1 to 10 moles.
Preferably, in the preparation method of the modified cellulose salt, the fatty acid and the chlorinating agent are reacted in the environment of liquid hydrocarbon, the reaction temperature is 85 +/-5 ℃, and the reaction time is 2-4 hours.
Preferably, in the preparation method of the modified cellulose salt, the substance containing the acid chloride structure and the carboxymethyl cellulose salt are reacted at the temperature of 85 +/-5 ℃ for 2-4 hours.
Preferably, in the step (1), the temperature for stirring and mixing the solvent and the bentonite is 55-90 ℃; further preferably, the temperature of the solvent and bentonite during stirring and mixing is 60-85 ℃.
Preferably, in the step (1), before adding the modified cellulose salt, the modified cellulose salt is mixed with the stabilizer to obtain a mixture, and then the obtained mixture is added to the substance obtained by stirring and mixing the solvent and the bentonite.
Preferably, in step (1), the metal catalyst is a Pd — C catalyst.
Preferably, in the step (1), the reaction temperature is 55-85 ℃, and the reaction time is 1.5-4 hours; further preferably, the reaction temperature is 60-85 ℃ and the reaction time is 2-3.5 hours.
Preferably, in step (1), the intermediate product is further separated and purified, including cooling, crystal precipitation, impurity removal by centrifugation and extraction.
Preferably, in the step (2), the solvent and the water-soluble derivative of the vitamin E are stirred and mixed, then the surfactant is added, the stirring is carried out, and the intermediate product prepared in the step (1) is added.
Preferably, in the step (2), the reaction temperature is 60-88 ℃, and the reaction time is 1-2.5 hours; further preferably, the reaction temperature is 60-85 ℃ and the reaction time is 1.8-2 hours.
And (3) carrying out quality inspection and filling on the developing additive prepared in the step (2), and selling.
Preferably, in the method for producing a modified cellulose salt, the fatty acid is a fatty acid having 16 to 22 carbon atoms; further preferably, the fatty acid is stearic acid.
Preferably, in the preparation method of the modified cellulose salt, the chlorinating agent is thionyl chloride.
Preferably, in the process for the preparation of the modified cellulose salt, the liquid hydrocarbon is a liquid alkane, such as n-heptane.
The prepared modified cellulose salt is a hydrophobic substance.
A third aspect of the invention provides the use of the above-described developer additive.
Use of the above-mentioned developer additive in printing, photocopying, duplicating or printing down.
Preferably, the application of the developer additive in printing refers to the application of the developer additive in preparing PCB.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the development additive prepared by modifying cellulose salt, vitamin E polyethylene glycol succinate (TPGS) and bentonite can prevent unexposed substances from further polymerizing, and the unexposed polymerized substances, such as photosensitive ink, are isolated and wrapped and are discharged through overflow of the tank body, so that the effect of preventing the unexposed polymerized substances, such as photosensitive ink, from polymerizing under the action of light and temperature is achieved, and the tank body is prevented from being adhered to equipment such as tank walls, rollers, pipelines and plate surfaces, and can be cleaned. The problems of poor product quality such as PCB surface appearance, plating resistance and the like caused by adhesive reversion can be effectively avoided, and the product yield is improved.
(2) The developing additive is applied to the production process of the PCB, so that the equipment maintenance frequency and the equipment maintenance working hours can be reduced, and the productivity is further improved. In contrast, the amount of wastewater is reduced, and the production cost is further reduced and the product quality is improved.
(3) In the production process of the PCB, after the developing additive is continuously used in equipment polluted by a developing process for 7-10 days, old scales can be fluffy and peeled off at places such as pipe walls, corners, heating pipes, spray heads and the like of the equipment, wherein the places are easy to generate the old scales, so that the cleanliness of the equipment is ensured.
Detailed Description
In order to make the technical solutions of the present invention more apparent to those skilled in the art, the following examples are given for illustration. It should be noted that the following examples are not intended to limit the scope of the claimed invention.
The starting materials, reagents or apparatuses used in the following examples are conventionally commercially available or can be obtained by conventionally known methods, unless otherwise specified.
Example 1: preparation of developer additives
The developing additive comprises the following raw material components in parts by weight: 12 parts of modified sodium carboxymethylcellulose, 19 parts of vitamin E polyethylene glycol succinate, 3 parts of sodium bentonite, 15 parts of polyoxyethylene octyl phenol ether, 5 parts of sodium gluconate and 100 parts of deionized water.
A method of preparing a developer additive, comprising the steps of:
(1) adding 50 parts of deionized water into a reaction kettle, heating to 65 ℃, then adding sodium bentonite, stirring and mixing, wherein the stirring and mixing temperature is 65 ℃, and the stirring and mixing time is 20 minutes; then mixing the modified sodium carboxymethylcellulose and sodium gluconate in a double-cone mixer to obtain a mixture, adding the obtained mixture into a substance obtained by stirring and mixing deionized water and sodium bentonite, adding a Pd-C metal catalyst (the addition of the Pd-C metal catalyst is one thousandth of the mass of the modified sodium carboxymethylcellulose), reacting at 75 ℃ for 2.5 hours to obtain an intermediate product, and further separating and purifying the prepared intermediate product, wherein the separation comprises the processes of cooling, crystal precipitation, impurity removal by centrifugal separation and extraction;
(2) adding 50 parts of deionized water into a reaction kettle, heating to 65 ℃, adding vitamin E polyethylene glycol succinate, stirring and mixing for 10 minutes, then adding polyoxyethylene octyl phenol ether, stirring for 30 minutes, adding the intermediate product obtained by separation and purification in the step (1), and reacting at the temperature of 70 ℃ for 2 hours to obtain the development additive;
the preparation method of the modified cellulose salt comprises the following steps: reacting octadecanoic acid and thionyl chloride in an n-heptane environment at 85 ℃ for 3 hours to generate a substance containing an acid chloride structure, adding sodium carboxymethylcellulose for reaction at 85 ℃ for 3.5 hours to prepare the modified cellulose salt.
Example 2: preparation of developer additives
The developing additive comprises the following raw material components in parts by weight: 4 parts of modified sodium carboxymethylcellulose, 6 parts of vitamin E polyethylene glycol succinate, 2 parts of sodium bentonite, 25 parts of polyoxyethylene octyl phenol ether, 12 parts of sodium gluconate and 120 parts of deionized water.
A method of preparing a developer additive, comprising the steps of:
(1) adding 60 parts of deionized water into a reaction kettle, heating to 80 ℃, then adding sodium bentonite, stirring and mixing, wherein the stirring and mixing temperature is 80 ℃, and the stirring and mixing time is 30 minutes; then mixing modified sodium carboxymethylcellulose and sodium gluconate in a double-cone mixer to obtain a mixture, adding the obtained mixture into a substance obtained by stirring and mixing deionized water and sodium bentonite, adding a Pd-C metal catalyst (the addition of the Pd-C metal catalyst is one thousandth of the mass of the modified sodium carboxymethylcellulose), reacting at the temperature of 80 ℃ for 3 hours to obtain an intermediate product, and further separating and purifying the prepared intermediate product, wherein the separation comprises cooling, crystal precipitation, impurity removal by centrifugal separation and extraction;
(2) adding 60 parts of deionized water into a reaction kettle, heating to 75 ℃, adding vitamin E polyethylene glycol succinate, stirring and mixing for 15 minutes, then adding polyoxyethylene octyl phenol ether, stirring for 30 minutes, adding the intermediate product obtained by separation and purification in the step (1), and reacting at the temperature of 75 ℃ for 1.8 hours to obtain a developing additive;
the preparation method of the modified cellulose salt comprises the following steps: reacting octadecanoic acid and thionyl chloride in an n-heptane environment at the temperature of 80 ℃ for 3.5 hours to generate a substance containing an acid chloride structure, adding sodium carboxymethylcellulose for reaction at the temperature of 85 ℃ for 3 hours to prepare the modified cellulose salt.
Example 3: preparation of developer additives
The developing additive comprises the following raw material components in parts by weight: 8 parts of modified sodium carboxymethylcellulose, 12 parts of vitamin E polyethylene glycol succinate, 2 parts of sodium bentonite, 10 parts of sodium gluconate and 110 parts of deionized water.
A method of preparing a developer additive, comprising the steps of:
(1) adding 60 parts of deionized water into a reaction kettle, heating to 80 ℃, then adding sodium bentonite, stirring and mixing, wherein the stirring and mixing temperature is 80 ℃, and the stirring and mixing time is 30 minutes; then mixing the modified sodium carboxymethylcellulose and sodium gluconate in a double-cone mixer to obtain a mixture, adding the obtained mixture into a substance obtained by stirring and mixing deionized water and sodium bentonite, adding a Pd-C metal catalyst (the addition of the Pd-C metal catalyst is two ten-thousandth of the mass of the modified sodium carboxymethylcellulose), and reacting at the temperature of 80 ℃ for 3 hours to obtain an intermediate product;
(2) adding 50 parts of deionized water into a reaction kettle, heating to 80 ℃, adding vitamin E polyethylene glycol succinate, stirring and mixing for 15 minutes, adding the intermediate product prepared in the step (1), and reacting at the temperature of 80 ℃ for 1.8 hours to prepare a developing additive;
the preparation method of the modified cellulose salt comprises the following steps: reacting octadecanoic acid and thionyl chloride in an n-heptane environment at 88 ℃ for 2.8 hours to generate a substance containing an acid chloride structure, adding sodium carboxymethylcellulose for reaction at 86 ℃ for 3 hours to prepare the modified cellulose salt.
Example 4: preparation of developer additives
Example 4 differs from example 3 only in that no sodium gluconate was added during the preparation of the developer additive in example 4, and the remaining components and preparation method were the same as in example 3.
Comparative example 1
In comparison with example 1, in comparative example 1, tocopherol was used instead of vitamin E polyethylene glycol succinate in example 1, and the remaining components and preparation method were the same as in example 1.
Comparative example 2
In comparison with example 1, in comparative example 2, sodium carboxymethylcellulose was used in place of the modified sodium carboxymethylcellulose in example 1, and the remaining components and preparation method were the same as in example 1.
Comparative example 3
In comparison with example 3, in comparative example 3, no sodium bentonite was added, and the remaining components and preparation method were the same as in example 3.
Product effectiveness testing
1. Test of descaling effect
In the prior art, in the process of preparing the PCB, a plurality of greasy dirt and yellow and white crystals (dry film decomposers) exist at the cylinder wall, the nozzle, the spray pipe, the conveying wheel, the conveying roller, the infusion pipe, the filter screen and the like of a developing machine in the developing process, and are difficult to remove by a common cleaning method. Even if acid-base or organic groove cleaning agent is used, the residual dirt on the equipment cannot be thoroughly cleaned.
However, if the developer additive prepared in example 2 of the present invention is used, after the developer additive is continuously used for 7 to 10 days, the dirt can be loosened and peeled off from the parts of the equipment such as pipe walls, corners, heating pipes, spray heads, etc., where the old dirt is easily generated, thereby ensuring the cleanliness of the equipment.
2. Defoaming effect test
In the production process of the PCB in the prior art, in the developing process, the developing solution for development is used in a developing machine for 30 minutes, namely, the development of a large amount of foams is accompanied, so that the quality of products obtained by development is deteriorated, for example, a large amount of small foams are generated, but the development additive prepared in the embodiment 3 of the invention is added into the developing solution, even if the developing solution is continuously used in the developing solution for 4 hours, the generation of foams can be effectively inhibited, the amount of the foams in the developed products can be remarkably reduced, and the quality of the products is greatly improved.
3. Tack free effect test
The developer is directly used for developing unexposed and polymerized substances (such as photosensitive ink), the waste liquid obtained by the treatment is turbid, and the turbid waste liquid is easy to adhere to a beaker and a wall of an iron container. The use of the developing additive prepared in embodiment 1 of the present invention can prevent or reduce the adhesion of the waste liquid to the equipment or the PCB product, thereby reducing the occurrence of open-short circuit of the PCB product caused by the adhesion of the waste liquid and further improving the yield of the PCB product.
4. Testing the stability of the circuit
The anti-sticking effect of the developing additive prepared in the embodiment 1 of the invention is tested by a company of Dongguan PCB, the anti-sticking effect is reflected by the number of short-circuit defects, the smaller the number of short-circuit defects of the PCB is, the better the anti-sticking effect is, the good anti-sticking effect is, the surfaces of equipment such as groove walls, rollers, pipelines and plate surfaces in the developing process can be kept clean, the product quality can be improved, the production efficiency is improved, and the production cost is reduced.
The results using the developer are shown in table 1 below, and the results using the developer and the developing additive prepared in example 1 of the present invention are shown in table 2 below.
Table 1:
table 2:
the PNL board is an operation board in the PCB preparation process, and the prepared PCB has more short-circuit defects if the PNL board has more short-circuit defects.
As can be seen from tables 1-2, in the developing process, the number of short-circuit defects of each PNL plate is reduced from 2.0 to 1.3 by using the developing additive prepared in example 1 of the present invention, compared to the developing additive prepared in example 1 of the present invention, i.e., the developing additive prepared in example 1 of the present invention is added, so that the short-circuit defects of the PNL plate in the PCB preparation process can be greatly reduced.
Under the same conditions, the numbers of short-circuit defects of each PNL plate using the developing additives prepared in examples 2, 3 and 4 of the present invention were 1.3, 1.4 and 1.4, respectively. Under the same conditions, the developing additives prepared in comparative examples 1, 2 and 3 of the present invention had short-circuit defect numbers of 1.9, 1.8 and 1.8 for each PNL plate, respectively.
Therefore, in the developing process, the developing additive prepared by the embodiment of the invention can obviously reduce the number of short-circuit defects of each PNL plate, thereby improving the quality of PCB products and improving the production efficiency of the PCB products.
5. Comparison of the overall Properties
The overall performance comparison is a comparison of the effect of the developer additive (which may be the developer additive prepared in any one of embodiments 1-4) on the maintenance cost, the frequency of cylinder replacement, the amount of wastewater reduction, the production efficiency, and the yield of PCB products, when the developer additive prepared in the embodiment of the present invention is used and not used in the developing process of PCB production, and the results are shown in tables 3-7.
Table 3: maintenance cost
Table 4: frequency of cylinder change
Table 5: reduction of wastewater
Table 6: production efficiency
Table 7: PCB product yield
As can be seen from the above tables 3 to 7, the developing additive prepared by using the embodiment of the present invention has significant improvement effects in terms of maintenance cost, frequency of cylinder replacement, reduction of wastewater, production efficiency, and yield of PCB products.
Claims (10)
1. A developer additive, wherein the raw material components for preparing the developer additive comprise: modified cellulose salt, water-soluble derivatives of vitamin E, bentonite and solvent;
the modified cellulose salt is obtained by modifying carboxymethyl cellulose salt with fatty acid and chlorinating agent.
2. The developer additive according to claim 1, wherein the modified cellulose salt is modified sodium cellulose, modified potassium cellulose or modified calcium cellulose; the water-soluble derivative of vitamin E is vitamin E polyethylene glycol succinate; the bentonite is at least one of sodium bentonite, potassium bentonite or calcium bentonite.
3. The developer additive of claim 1, wherein the raw material components for making the developer additive further comprise at least one of a surfactant, a stabilizer, or a metal catalyst.
4. The developer additive according to claim 3, wherein the surfactant is selected from at least one of polyoxyethylene octylphenol ether, glyceryl monostearate, or cetearyl glucoside; the stabilizer is gluconate.
5. The developer additive of claim 1, wherein the raw material components for preparing the developer additive comprise, in parts by weight: 3-15 parts of modified cellulose salt, 4-25 parts of water-soluble derivatives of vitamin E, 0.1-5 parts of bentonite and 30-140 parts of solvent.
6. A process for preparing a developer additive according to claim 3 or 4, comprising the steps of:
(1) stirring and mixing the solvent and bentonite, then adding modified cellulose salt, adding a metal catalyst, and reacting to obtain an intermediate product;
(2) and (2) stirring and mixing the solvent and the water-soluble derivative of the vitamin E, then adding the intermediate product prepared in the step (1), and reacting to prepare the developing additive.
7. The method according to claim 6, wherein in the step (1), the modified cellulose salt is prepared by: fatty acid and a chlorinating agent react in the environment of liquid hydrocarbon to generate a substance containing an acyl chloride structure, and then carboxymethyl cellulose salt is added to react to prepare the modified cellulose salt.
8. The method according to claim 7, wherein in the step (1), before adding the modified cellulose salt, the modified cellulose salt is mixed with a stabilizer to obtain a mixture, and then the mixture is added to a substance obtained by stirring and mixing the solvent and the bentonite; in the step (1), the reaction temperature is 55-85 ℃, and the reaction time is 1.5-4 hours; in the step (2), the solvent and the water-soluble derivative of the vitamin E are stirred and mixed, then the surfactant is added and stirred, and then the intermediate product prepared in the step (1) is added; in the step (2), the reaction temperature is 60-88 ℃, and the reaction time is 1-2.5 hours.
9. Use of the developer additive according to any of claims 1 to 5 for printing, photocopying, duplicating or printing down.
10. Use according to claim 9, wherein the use in printing is in the preparation of a PCB.
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| CN101750910A (en) * | 2008-12-18 | 2010-06-23 | 京东方科技集团股份有限公司 | Developer solution component |
| JP2020002317A (en) * | 2018-06-29 | 2020-01-09 | 三菱製紙株式会社 | Washing liquid of automatic development machine |
| US20200301283A1 (en) * | 2019-03-22 | 2020-09-24 | Tokyo Ohka Kogyo Co., Ltd. | Solution, method of forming resist pattern, and semiconductor device manufacturing method |
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