WO2016035743A1 - 湿式塗装ブース循環水処理剤及び湿式塗装ブース循環水処理方法 - Google Patents
湿式塗装ブース循環水処理剤及び湿式塗装ブース循環水処理方法 Download PDFInfo
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- WO2016035743A1 WO2016035743A1 PCT/JP2015/074632 JP2015074632W WO2016035743A1 WO 2016035743 A1 WO2016035743 A1 WO 2016035743A1 JP 2015074632 W JP2015074632 W JP 2015074632W WO 2016035743 A1 WO2016035743 A1 WO 2016035743A1
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- circulating water
- phenol resin
- wet
- booth circulating
- water treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D3/00—Differential sedimentation
- B03D3/02—Coagulation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/14—Paint wastes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/12—Prevention of foaming
Definitions
- the present invention relates to a wet paint booth circulating water treatment agent and a wet paint booth circulating water treatment method capable of efficiently agglomerating paint in wet paint booth circulating water containing water-based paint and / or solvent-based paint.
- Spray painting is performed in the painting process of automobiles, electrical equipment, metal products, etc.
- overspray paint excess paint
- the amount of generation reaches about 50% to 60% of the paint used except for electrostatic coating with high coating efficiency. Therefore, it is necessary to remove and recover excess paint from the environment of the painting process.
- Washing-type wet painting booths that collect excess paint with water are widely used in painting facilities.
- FIG. 1 A part of the mist-like surplus paint generated in the spray chamber 21 adheres to the slats on the wall surface and work floor, but most of the mist is in contact with the circulating water flowing on the water curtain plate 22 along with the air flow and collected in the water. Is done. Water drops remaining in the air and some paint particles are also removed by the eliminator 23. Air is discharged from the exhaust duct 24 by the fan 25 to the outside of the system. The circulating water that has collected the paint particles passes through the water tank 26 and enters the pit (separation tank) 27, and is further solid-liquid separated by a floating device (not shown).
- the solid matter that has been subjected to solid-liquid separation is recovered as paint sludge.
- the water from which the solid matter has been separated and removed passes through the strainer 28 and is circulated and used as flush water through the circulating water line by the circulating water pump 29.
- solvent-based paints using only organic solvents such as thinner
- water-based paints using water Solvent-based paints are superior to water-based paints in terms of weather resistance, chipping resistance, and the like, and are often used particularly in clear clear coatings for automobiles. Because water-based paints use water as a solvent (some solvents may be used in combination), they are not flammable, safe and sanitary, and have the advantage of no pollution caused by organic solvents. In recent years, the range of application has been expanded.
- Treatment agents for circulating water in the wet painting booth are used as treatment agents for circulating water in the wet painting booth.
- Treatment agent using melamine resin (Patent Document 1) 2.
- Combined use of inorganic flocculant and polymer (Patent Document 2) 3.
- Treatment agent using clay mineral (Patent Document 1) 2.
- treatment agents do not have sufficient tack-free effect on solvent-based paints, and it is necessary to increase the amount of addition in order to obtain the desired effect. By increasing the amount of treatment agent added, the amount of waste increases.
- Patent Document 3 As a treatment agent effective in suppressing foaming of a water-based paint, there is a treatment agent using a phenol resin.
- Patent Document 3 and Patent Document 4 have been proposed.
- Patent Document 3 a novolak type phenol resin having a molecular weight of 1,000 or less (repetition number n is 10 or less), a resol type phenol resin having a molecular weight of 100 to 300, or the like is preferred as a phenol resin to be used.
- Patent Document 4 a novolak type phenol resin having a repetition number n of 4 to 8 and a molecular weight smaller than that of Patent Document 3 is used.
- Patent Document 5 also describes the use of a phenol resin.
- Patent Document 5 describes that the phenol resin has a weight average molecular weight of 3,000 or less, preferably 2,000 or less.
- the present invention provides a sufficient non-adhesiveness and agglomeration effect for solvent-based paints without being affected by the types of paints and curing agents and equipment conditions.
- An object of the present invention is to provide a wet paint booth circulating water treatment agent capable of obtaining a high foaming suppression effect and a wet paint booth circulating water treatment method using this wet paint booth circulating water treatment agent.
- the present inventor is able to solve this problem by using a phenol resin having a polystyrene-reduced weight average molecular weight (hereinafter sometimes referred to as “weight average molecular weight”) higher than that of a conventionally used phenol resin. I found it.
- the gist of the present invention is as follows.
- a wet paint booth circulating water containing water-based paint and / or solvent-based paint characterized in that a phenol resin having a weight average molecular weight of more than 3,000 and not more than 100,000 is an active ingredient.
- Wet paint booth circulating water treatment agent characterized in that a phenol resin having a weight average molecular weight of more than 3,000 and not more than 100,000 is an active ingredient.
- the phenol resin is at least one selected from a novolac type phenol resin and a secondary reaction phenol resin obtained by a secondary reaction using a novolac type phenol resin as a raw material resin.
- a wet paint booth circulating water treatment agent is at least one selected from a novolac type phenol resin and a secondary reaction phenol resin obtained by a secondary reaction using a novolac type phenol resin as a raw material resin.
- the wet paint booth circulating water treatment agent according to any one of [1] to [5] is added to the wet paint booth circulating water containing a water-based paint and / or a solvent-based paint, and the paint in the circulating water is added.
- a wet painting booth circulating water treatment method characterized by coagulating.
- the wet coating booth circulating water treatment agent is added to the wet coating booth circulating water so that the amount of the effective component of the phenol resin is 1 to 200 mg / L.
- Wet paint booth circulating water treatment method is used.
- the amount of the active ingredient is 1 to 200 mg / L for the aluminum-based flocculant and / or the amount of the active ingredient is 5 to 50 mg / L for the cationic polymer.
- a wet paint booth circulating water treatment method characterized by adding so as to become.
- the present invention it is possible to obtain sufficient tack-free and agglomeration effects for solvent-based paints without being affected by the types of paints and curing agents and equipment conditions, with a small amount of chemical addition. It is possible to obtain a high foaming suppression effect for water-based paints. According to the present invention, it is possible to reduce drug cost by reducing the amount of drug added, reduce the amount of agglomeration and dewatered sludge to be discarded, and reduce waste disposal cost.
- FIG. 6 is a graph showing evaluation results of foamability in Examples 1 to 6 and Comparative Examples 1 to 5.
- 6 is a graph showing evaluation results of antifoaming properties in Examples 1 to 6 and Comparative Examples 1 to 5.
- FIG. 6 is a schematic diagram showing experimental apparatuses used in Examples 10 to 12 and Comparative Examples 9 to 11. It is a conceptual diagram of the Venturi booth.
- the wet paint booth circulating water treatment agent of the present invention comprises a phenol resin having a weight average molecular weight of more than 3,000 and not more than 100,000 as an active ingredient.
- the weight average molecular weight of the phenol resin is a value measured by a GPC method (gel permeation chromatography method) and calculated using a standard polystyrene calibration curve. Specifically, the following method is used. Measured in
- the alkaline aqueous solution of the sample was diluted to about 0.1% by mass, and hydrochloric acid was slowly added dropwise to prepare a suspension whose pH was lowered to 4.6. Next, this suspension was put in a dialysis tube and sealed, and the tube was placed in a vat that was allowed to continuously pass pure water, and dialyzed for 24 hours. Thereafter, the suspension taken out from the dialysis tube was filtered through a glass filter, and the recovered resin was washed with pure water and then dried at room temperature for 48 hours in a vacuum dryer to obtain a weight average molecular weight measurement sample.
- the measurement was performed using a tetrahydrofuran solution as a weight average molecular weight measurement sample, HLC-8120GPC manufactured by Tosoh Corporation as an analyzer (GPC), and tetrahydrofuran as a solvent.
- the weight average molecular weight was determined by standard polystyrene conversion.
- the weight average molecular weight of the phenol resin is 3,000 or less, the effect of the present invention by using a phenol resin having a large weight average molecular weight cannot be obtained sufficiently.
- phenolic resin When phenolic resin is added to the wet paint booth circulating water, the added phenolic resin is dissolved or colloidally dispersed in the circulating water and coagulated due to coexisting cationic polymer, aluminum-based flocculant, pH reduction, etc. Insolubilize. At the time of this condensation and insolubilization, the phenol resin contributes to the detackification of the solvent-based paint and the suppression of foaming of the aqueous paint. The effect is considered to be greater as the phenol resin has a higher weight average molecular weight. When the phenol resin having a large weight average molecular weight is insolubilized, it is considered that the paint is involved and aggregates.
- the weight average molecular weight of the phenol resin varies depending on the type of the phenol resin used, but is more than 3,000 and not more than 100,000, preferably 3,300 to 50,000. In particular, it is preferable to use a phenol resin having a weight average molecular weight of 5,000 to 30,000.
- the phenol resin is not particularly limited as long as it satisfies the above weight average molecular weight.
- a novolac type phenol resin and / or a secondary reaction phenol resin obtained by subjecting the novolac type phenol resin to a secondary reaction treatment using a raw resin can be used. These can be used alone or in combination of two or more.
- an aqueous solution of novolac phenol resin obtained by reacting phenol and aldehyde in the presence of an acid catalyst is added with an aldehyde to form a resol type in the presence of an alkali catalyst.
- a resin in which the content of the low molecular weight component is decreased and the high molecular weight of the phenol resin is controlled (see, for example, Japanese Patent No. 5407994).
- phenols used in the production of novolak type phenolic resins include various isomers of phenol and cresol, various isomers of ethylphenol, various isomers of xylenol, alkylphenols such as butylphenol, unsaturated alkylphenols such as cardanol, ⁇ -Polyaromatic phenols such as naphthol and ⁇ -naphthol, polyphenols such as bisphenol A, bisphenol F, bisphenol S, pyrogallol, resorcin, and catechol, and hydroquinone, but are not limited to these. Absent. These phenols may be used individually by 1 type, and 2 or more types may be mixed and used for them.
- aldehydes used in the production of novolak-type phenol resins and secondary reaction phenol resins include formaldehyde, paraformaldehyde, acetaldehyde, propylaldehyde, benzaldehyde, salicylaldehyde, glyoxal, and the like, but are not limited thereto. is not.
- These aldehydes may be used individually by 1 type, and may mix and use 2 or more types.
- the phenol resin is hardly soluble in water, it is preferably used as a solution or emulsion by dissolving or dispersing it in a solvent that is soluble in water.
- the solvent used include water-soluble organic solvents such as ketones such as acetone, esters such as methyl acetate, alcohols such as methanol, alkaline aqueous solutions, and amine solutions.
- aqueous alkali solutions such as aqueous sodium hydroxide (NaOH) and aqueous potassium hydroxide (KOH).
- the alkaline aqueous solution has an alkali concentration of 1 to 25% by mass and a phenol resin concentration of 1 to 50% by mass.
- the novolac type phenol resin may be dissolved by heating to about 70 to 80 ° C.
- the amount of phenol resin added varies depending on the properties of the wet paint booth circulating water, that is, the type of paint in the wet paint booth circulating water and the paint content, but is preferably as follows.
- the addition amount of the phenolic resin is preferably 1 mg / L or more, particularly 5 mg / L or more as an active ingredient amount (resin solid content) with respect to the wet coating booth circulating water.
- the addition amount of the phenolic resin is preferably 0.1% by mass or more, particularly 0.5% by mass or more as an active ingredient amount with respect to the paint (solid content) in the circulating water.
- the amount of phenolic resin added to the wet paint booth circulating water is 1,000 mg / L or less, especially 1 to 200 mg / L, especially 5 to 200 mg / L as the amount of active ingredient, and 100 as the amount of active ingredient for paint in circulating water. It is preferable that the amount be not more than mass%, particularly 0.5 to 10 mass%.
- phenol resin can be used together with an aluminum-based flocculant and / or a cationic polymer.
- a phenol resin in combination with an aluminum-based flocculant and / or a cationic polymer it is possible to obtain even better agglomeration, tack-free, and foaming suppression effects.
- aluminum-based flocculant one type or two or more types such as sulfuric acid band, polyaluminum chloride, and aluminum nitrate can be used.
- Cationic polymers include cationic amines such as alkylamine / epichlorohydrin condensate, polyethyleneimine, alkylene dichloride / polyalkylene polyamine condensate, dicyandiamide / formaldehyde condensate, DAM (dimethylaminoethyl methacrylate), and DADMAC (diallyldimethylammonium chloride).
- cationic amines such as alkylamine / epichlorohydrin condensate, polyethyleneimine, alkylene dichloride / polyalkylene polyamine condensate, dicyandiamide / formaldehyde condensate, DAM (dimethylaminoethyl methacrylate), and DADMAC (diallyldimethylammonium chloride).
- cationic polymers may be used alone or in combination of two or more.
- the amount of aluminum flocculant added depends on the properties of the wet coating booth circulating water, the type and amount of phenolic resin used, and whether or not a cationic polymer is used in combination.
- the addition amount of the aluminum-based flocculant is preferably about 1 to 1,000 mg / L, particularly 1 to 200 mg / L, particularly about 5 to 200 mg / L as the amount of the active ingredient with respect to the wet paint booth circulating water.
- the addition amount of the aluminum-based flocculant is less than the above lower limit, the effect of improving the aggregation, non-tackiness, and foaming suppression effect by adding the aluminum-based flocculant cannot be obtained sufficiently. Even if the addition amount of the aluminum-based flocculant exceeds the above upper limit, an improvement in the effect commensurate with the addition amount cannot be obtained, which is not preferable in terms of the drug cost, the increase in the amount of the generated sludge.
- the addition amount of the cationic polymer varies depending on the properties of the wet coating booth circulating water, the type and addition amount of the phenol resin used, and the presence or absence of the combined use of an aluminum flocculant.
- the addition amount of the cationic polymer is preferably about 5 to 100 mg / L, particularly about 5 to 50 mg / L, especially about 10 to 30 mg / L as the amount of the active ingredient with respect to the wet paint booth circulating water.
- the addition amount of the cationic polymer is less than the above lower limit, the effect of improving the aggregation, non-adhesion and foaming suppression effects by adding the cationic polymer cannot be obtained sufficiently. Even if the addition amount of the cationic polymer exceeds the above upper limit, an improvement in the effect corresponding to the addition amount is not obtained, and if the addition amount of the cationic polymer is excessively large, there is an electrical repulsion between particles due to excess cations. This is not preferable in terms of the occurrence of agglomeration failure and the increase in the chemical cost and the amount of agglomerated sludge generated.
- ⁇ Wet coating booth circulating water treatment method> There is no particular limitation on the method of adding the phenol resin or the phenol resin and the aluminum flocculant and / or the cationic polymer, which is the wet coating booth circulating water treatment agent of the present invention, to the wet coating booth circulating water. It may be added to the circulating water system intermittently once or twice a day, or may be added continuously. Preferably, the metered injection is continuously performed by a pump.
- the wet coating booth circulating water treatment agent of the present invention may be added to any location of circulating water.
- the wet paint booth circulating water treatment agent of the present invention is preferably added to the separation tank inlet side where the circulating water is returned.
- the aluminum-based flocculant and / or cationic polymer is added in combination, there is no particular limitation on the order of addition of the phenol resin and the aluminum-based flocculant and / or cationic polymer. You may add a phenol resin and an aluminum type flocculant and / or a cationic polymer simultaneously to the same place.
- a cationic polymer may be added before the separator.
- the pH of the agglomeration treatment system is preferably about 6.0 to 8.5 from the viewpoint of preventing corrosion of the equipment and the effect characteristics relating to the pH of the phenolic resin or cationic polymer. Accordingly, when the pH falls outside this range and becomes low, it is preferable to adjust the pH by adding an alkaline aqueous solution. Normally, the actual machine does not deviate to the high pH side, but if it deviates extremely, pH adjustment may be necessary.
- the agglomerated sludge separated and recovered by such a method is subjected to incineration or landfill treatment after gravity dehydration or after dehydration by a normal method.
- the amount of generated sludge can be reduced and the sludge disposal cost can be reduced by reducing the required amount of chemicals added by using a phenol resin having a large weight average molecular weight.
- a polymer coagulant composed of a water-soluble polymer having a weight average molecular weight of usually more than 1 million, preferably 5 million or more is added.
- the flocs can be coarsened.
- polymer flocculant one or more of known anionic polymer flocculants, cationic polymer flocculants, amphoteric polymer flocculants and the like can be used.
- the amount added is suitably determined in a range of 0.1 to 10% by mass, preferably 0.5 to 2% by mass with respect to the surplus paint so that a good coagulation effect can be obtained. do it.
- the wet paint booth circulating water treatment agent and the wet paint booth circulating water treatment method of the present invention include wet paint booth circulating water containing water-based paint, wet paint booth circulating water containing solvent-based paint, aqueous paint and solvent-based paint. It can be effectively applied to the treatment of circulating water in the wet paint booth.
- phenolic resin “Resitop PSM-4261” manufactured by Gunei Chemical Industry Co., Ltd. was used.
- This product is a novolak type phenol resin obtained by polycondensation of phenol and formaldehyde in the presence of an acid catalyst, and has a weight average molecular weight of 1,000.
- Example 2 “Resitop PSM-4324” manufactured by Gunei Chemical Industry Co., Ltd. was used.
- This product is a novolak-type phenol resin obtained by polycondensation of phenol and formaldehyde in the presence of an acid catalyst, and has a weight average molecular weight of 2,000.
- Example 4 In a separable flask equipped with a stirrer, a thermometer, and a reflux condenser, 370.4 g of phenol was added, and then 190.0 g of a 50% by mass aqueous formaldehyde solution was added. Thereafter, 2.0 g of oxalic acid was added as a catalyst, heated with a heater while stirring the system, the temperature was raised to 95 ° C., and the reaction was performed for 4 hours while maintaining the temperature. Next, dehydration concentration was performed while raising the temperature to 200 ° C. under normal pressure, and when the temperature reached 200 ° C., unreacted phenol was distilled off under a reduced pressure of 5.3 kPa. Thus, 360 g of a yellow novolac type phenol resin (weight average molecular weight: 3,300) was obtained.
- Example 5 “Resitop PSM-4326” manufactured by Gunei Chemical Industry Co., Ltd. was used. This product is a novolak type phenol resin obtained by polycondensation of phenol and formaldehyde in the presence of an acid catalyst, and has a weight average molecular weight of 5,000.
- Example 6 In a separable flask equipped with a stirrer, a thermometer, and a reflux condenser, 450.0 g of phenol was added, and then 285.0 g of a 42% by mass aqueous formaldehyde solution was added. Thereafter, 2.5 g of oxalic acid was added as a catalyst, heated with a heater while stirring the system, heated to 95 ° C., and reacted for 4 hours while maintaining the temperature. Next, dehydration concentration was performed while raising the temperature to 200 ° C. under normal pressure, and when the temperature reached 200 ° C., unreacted phenol was distilled off under a reduced pressure of 5.3 kPa. Thus, 380 g of a yellow novolac type phenol resin (weight average molecular weight: 7,900) was obtained.
- Example 8 “Resitop PSM-6358” manufactured by Gunei Chemical Industry Co., Ltd. was used as a raw material resin.
- This product is a novolak type phenol resin obtained by polycondensation of phenol and formaldehyde in the presence of an acid catalyst, and has a weight average molecular weight of 5,400.
- PSM-6358 In a beaker, 41.0 g of “PSM-6358”, 146.2 g of ion-exchanged water, and 12.8 g of a 48 mass% sodium hydroxide aqueous solution were stirred and dissolved with a magnetic stirrer. “PSM-6358” was 20.5 mass. 200 g of a novolak-type phenol resin alkaline aqueous solution containing 1% was obtained.
- Example 9 In a separable flask equipped with a stirrer, a thermometer, and a reflux condenser, 550.0 g of phenol was added, and then 298.0 g of a 50% by mass aqueous formaldehyde solution was added. Thereafter, 6.0 g of oxalic acid was added as a catalyst, heated with a heater while stirring the system, heated to 95 ° C., and reacted for 3 hours while maintaining the temperature. Next, dehydration concentration was performed while raising the temperature to 200 ° C. under normal pressure, and when the temperature reached 200 ° C., unreacted phenol was distilled off under a reduced pressure of 5.3 kPa. Thus, 580 g of a yellow novolac type phenol resin (weight average molecular weight: 15,000) was obtained.
- Example 10 In a separable flask equipped with a stirrer, a thermometer, and a reflux condenser, 470.6 g of phenol was added, and then 81.6 g of 92 mass% paraformaldehyde was added. Thereafter, 4.7 g of zinc acetate was added as a catalyst, and the system was heated with a heater while stirring the system, heated to 120 ° C., and then refluxed for 4 hours. Next, dehydration concentration was performed while raising the temperature to 200 ° C. under normal pressure, and when the temperature reached 200 ° C., unreacted phenol was distilled off under a reduced pressure of 5.3 kPa. Thus, 350 g of a yellow high-ortho-type phenol resin (weight average molecular weight: 1,100) was obtained.
- a yellow high-ortho-type phenol resin weight average molecular weight: 1,100
- Example 11 In a separable flask equipped with a stirrer, a thermometer, and a reflux condenser, 470.6 g of phenol was added, and then 97.9 g of 92% by mass paraformaldehyde was added. Thereafter, 4.7 g of zinc acetate was added as a catalyst, and the system was heated with a heater while stirring the system, heated to 120 ° C., and then refluxed for 4 hours. Next, dehydration concentration was performed while raising the temperature to 200 ° C. under normal pressure, and when the temperature reached 200 ° C., unreacted phenol was distilled off under a reduced pressure of 5.3 kPa. Thus, 370 g of a yellow high-ortho-type phenol resin (weight average molecular weight: 1,800) was obtained.
- test water 300 ml was placed in a 1 L graduated cylinder and a bubbling test was performed.
- test water in the graduated cylinder was bubbled with an air balloon at an air amount of 1.5 L / min, and the following foaming properties and defoaming properties were confirmed.
- the test of foamability and antifoaming property was continuously performed using the same test water.
- Example 10 to 12 Comparative Examples 9 to 11
- the test was carried out using the novolak type phenol resin having the weight average molecular weight shown in Table 4 (however, no phenol resin was used in Comparative Example 9) and using the experimental apparatus shown in FIG.
- This experimental apparatus is configured to circulate the circulating water in the circulating water tank 1 having a retained water amount of 50 L by the pump P and to flow down on the water curtain plate 2 on which the paint on the upper part of the circulating water tank is sprayed.
- . 3 is a paint spraying device
- 11 is a circulation pipe
- 12 is a discharge pipe for discharging the circulating water to the outside of the system
- 13 is an exhaust pipe
- V 1 and V 2 are valves
- F is an exhaust fan.
- the tack-free effect was observed when the weight average molecular weight was 1,000 or more, and the tack-free effect of a phenol resin of 3,000 or more, especially 5,000 or more was particularly good.
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Abstract
Description
1. メラミン樹脂を用いた処理剤(特許文献1)
2. 無機凝集剤と高分子ポリマーの併用(特許文献2)
3. 粘土鉱物を用いた処理剤
水性塗料の泡立ちを抑えることはできない。このため、水性塗料の泡立ち抑制のためには、通常、消泡剤が併用される。消泡剤の使用により、湿式塗装ブース循環水のCODが上昇し、水質を悪化させる傾向にある。
泡立ちの原因となる界面活性剤を除去できないため、循環、濃縮される塗装ブースの系内では徐々に泡立ちが増大し、消泡剤の使用量も増大していく傾向にある。この結果、水質が更に悪化するという悪循環をきたす。
水性塗料に対する発泡抑制効果は得られるものの、その効果は十分ではなく、目的の効果を得るためにはその添加量を多くする必要がある。
溶剤系塗料に対する不粘着化効果は優れるものの、塗料や硬化剤の種類、設備条件によっては不粘着化のための添加量を多くする必要がある場合がある。
本発明の湿式塗装ブース循環水処理剤は、重量平均分子量が3,000を超え、100,000以下のフェノール樹脂を有効成分とするものである。
≪重量平均分子量測定試料の調製≫
試料がテトラヒドロフランに可溶の場合には、そのまま重量平均分子量測定試料とした。試料がテトラヒドロフランに不溶の場合には、次の操作によって重量平均分子量測定試料を調製した。
そのため試料のアルカリ水溶液を0.1質量%程度に希釈し、塩酸をゆっくり滴下してpHを4.6に下げた懸濁液を調製した。次にこの懸濁液を透析チューブに入れて密閉し、連続で純水を通水できるようにしたバットにそのチューブを入れ、24時間透析を行った。その後、透析チューブから取り出した懸濁液をガラスフィルターでろ過し、回収した樹脂を純水にて洗浄後、真空乾燥機にて48時間室温で乾燥させることにより重量平均分子量測定試料とした。
重量平均分子量測定試料をテトラヒドロフラン溶液とし、分析装置(GPC)として東ソー株式会社製HLC-8120GPC、溶媒としてテトラヒドロフランを用い、測定を行った。重量平均分子量は標準ポリスチレン換算により求めた。
上記のフェノール樹脂は、アルミニウム系凝集剤及び/又はカチオン系ポリマーと共に用いることができる。フェノール樹脂とアルミニウム系凝集剤及び/又はカチオン系ポリマーを併用することにより、より一層良好な凝集、不粘着化、発泡抑制効果を得ることができる。
湿式塗装ブース循環水に本発明の湿式塗装ブース循環水処理剤であるフェノール樹脂、或いはフェノール樹脂とアルミニウム系凝集剤及び/又はカチオン系ポリマーを添加する方法は特に制限はない。循環水系に1日に1~2回程度の頻度で間欠的に添加しても良く、連続添加であっても良い。好ましくは、ポンプにより連続的に定量注入する。
[サンプル1]
群栄化学工業株式会社製の「レヂトップPSM-4261」を使用した。本品は、フェノールとホルムアルデヒドを酸触媒の存在下にて重縮合を行って得られたノボラック型フェノール樹脂であり、重量平均分子量は1,000である。
群栄化学工業株式会社製の「レヂトップPSM-4324」を使用した。本品は、フェノールとホルムアルデヒドを酸触媒の存在下にて重縮合を行って得られたノボラック型フェノール樹脂であり、重量平均分子量は2,000である。
攪拌機、温度計、還流冷却管を備えたセパラブルフラスコに、クレゾール450.0gを入れ、次いで37質量%ホルムアルデヒド水溶液200.0gを添加した。その後、触媒としてシュウ酸3.0gを添加し、系を攪拌しながらヒーターにより加熱を行い95℃まで昇温し、温度を維持したまま4時間反応を行った。次に、常圧下で200℃まで昇温しながら脱水濃縮を行い、200℃に達したところで5.3kPaの減圧下において未反応クレゾールの留去を行なった。こうして黄色透明なノボラック型クレゾール樹脂(重量平均分子量:2,300)350gを得た。
攪拌機、温度計、還流冷却管を備えたセパラブルフラスコに、フェノール370.4gを入れ、次いで50質量%ホルムアルデヒド水溶液190.0gを添加した。その後、触媒としてシュウ酸2.0gを添加し、系を攪拌しながらヒーターにより加熱を行い95℃まで昇温し、温度を維持したまま4時間反応を行った。次に、常圧下で200℃まで昇温しながら脱水濃縮を行い、200℃に達したところで5.3kPaの減圧下において未反応フェノールの留去を行なった。こうして黄色状のノボラック型フェノール樹脂(重量平均分子量:3,300)360gを得た。
群栄化学工業株式会社製の「レヂトップPSM-4326」を使用した。本品は、フェノールとホルムアルデヒドを酸触媒の存在下にて重縮合を行って得られたノボラック型フェノール樹脂であり、重量平均分子量は5,000である。
攪拌機、温度計、還流冷却管を備えたセパラブルフラスコに、フェノール450.0gを入れ、次いで42質量%ホルムアルデヒド水溶液285.0gを添加した。その後、触媒としてシュウ酸2.5gを添加し、系を攪拌しながらヒーターにより加熱を行い95℃まで昇温し、温度を維持したまま4時間反応を行った。次に、常圧下で200℃まで昇温しながら脱水濃縮を行い、200℃に達したところで5.3kPaの減圧下において未反応フェノールの留去を行なった。こうして黄色状のノボラック型フェノール樹脂(重量平均分子量:7,900)380gを得た。
群栄化学工業株式会社製の「レヂトップPSF-2803」を使用した。本品は、クレゾールとホルムアルデヒドを酸触媒の存在下にて重縮合を行って得られたノボラック型クレゾール樹脂であり、重量平均分子量は12,000である。
原料樹脂として群栄化学工業株式会社製の「レヂトップPSM-6358」を使用した。本品はフェノールとホルムアルデヒドを酸触媒の存在下にて重縮合を行って得られたノボラック型フェノール樹脂であり、重量平均分子量は5,400である。
攪拌機、温度計、還流冷却管を備えたセパラブルフラスコに、フェノール550.0gを入れ、次いで50質量%ホルムアルデヒド水溶液298.0gを添加した。その後、触媒としてシュウ酸6.0gを添加し、系を攪拌しながらヒーターにより加熱を行い95℃まで昇温し、温度を維持したまま3時間反応を行った。次に、常圧下で200℃まで昇温しながら脱水濃縮を行い、200℃に達したところで5.3kPaの減圧下において未反応フェノールの留去を行なった。こうして黄色状のノボラック型フェノール樹脂(重量平均分子量:15,000)580gを得た。
攪拌機、温度計、還流冷却管を備えたセパラブルフラスコに、フェノール470.6gを入れ、次いで92質量%パラホルムアルデヒド81.6gを添加した。その後、触媒として酢酸亜鉛4.7gを添加し、系を攪拌しながらヒーターにより加熱を行い120℃まで昇温した後、4時間還流反応を行った。次に、常圧下で200℃まで昇温しながら脱水濃縮を行い、200℃に達したところで5.3kPaの減圧下において未反応フェノールの留去を行なった。こうして黄色状のハイオルソ型フェノール樹脂(重量平均分子量:1,100)350gを得た。
攪拌機、温度計、還流冷却管を備えたセパラブルフラスコに、フェノール470.6gを入れ、次いで92質量%パラホルムアルデヒド97.9gを添加した。その後、触媒として酢酸亜鉛4.7gを添加し、系を攪拌しながらヒーターにより加熱を行い120℃まで昇温した後、4時間還流反応を行った。次に、常圧下で200℃まで昇温しながら脱水濃縮を行い、200℃に達したところで5.3kPaの減圧下において未反応フェノールの留去を行なった。こうして黄色状のハイオルソ型フェノール樹脂(重量平均分子量:1,800)370gを得た。
[実施例1~6、比較例1~5]
表1に示すフェノール樹脂を用い、以下の手順で発泡性と消泡性の評価を行った。
(2) 水酸化ナトリウムと純水を用いて、フェノール樹脂濃度が10質量%で水酸化ナトリウム濃度が4.8質量%のフェノール樹脂アルカリ水溶液よりなる処理剤を調製した。
(3) (2)の処理剤を、(1)の塗料液に、フェノール樹脂純分の添加量が125、250又は500mg/Lとなるように添加し、その後硫酸バンドを1,000mg/L添加し、水酸化ナトリウムでpH約7.0に調整して試験水とした。
(4) 試験水300mlを1Lのメスシリンダーに入れ、バブリング試験を実施した。
バブリング試験では、散気球を用いて、1.5L/分の空気量でメスシリンダー内の試験水をバブリングし、以下の発泡性と消泡性を確認した。発泡性と消泡性の試験は同一の試験水を用いて連続して行った。
バブリングを開始し2分経過した時点でバブリングを停止すると共に、バブリング2分経過後の泡量(ml)を測定した。
2分以内に泡量700mlを超える場合は、泡量が700mlを超えた時点でバブリングを停止すると共に700mlを超えるまでの秒数を記録した(この秒数は大きい程発泡抑制効果に優れる)。
発泡性試験に引き続き、バブリング停止後2分間静置し、残った泡量(ml)を測定した。
2分以内に泡が消える場合は、泡が消えるまでの秒数を記録した(この秒数は小さい程消泡性に優れる。)。
図1の泡量は低いものほど効果が良く、図2の泡量も同様に低いものほど効果がよい。
図1,2より明らかなように、重量平均分子量が高いものほど発泡抑制、消泡性の効果が良く、特に少ない添加量(125ppm)において顕著に差が表れている。
表3A,3Bに示す重量平均分子量のノボラック型フェノール樹脂を用い(ただし、比較例6ではフェノール樹脂用いず)、以下の手順で発泡性、消泡性、濾液濁度及び凝集効果の評価を行った。
硫酸バンドを添加した場合は更に水酸化ナトリウムを添加してpHを約7.0にそろえた。
(2) (1)の試験水について、実施例1と同様にしてバブリング試験を行い、発泡性と消泡性を評価した。
(3) (1)の試験水について、ワットマンNo.41濾紙で濾過した濾液の濁度を濁度計により測定した。
(4) (1)の試験水に対して、1質量%のカチオン性高分子凝集剤(アクリルアミドと2(アクリロイルオキシ)エチルトリメチルアンモニウムクロライドとの共重合物(重量平均分子量800万))を有効成分濃度として6.6mg/L添加し、フロックの状態を確認し、下記基準で評価した。
○:良好なフロックが形成され凝集性に優れる。
×:フロックが形成されず凝集効果が得られない。
表4に示す重量平均分子量のノボラック型フェノール樹脂を用い(ただし、比較例9ではフェノール樹脂を用いず)、図3に示す実験装置を用いて試験を実施した。
A :指触非常に良好、指で擦っても付着しない
B :指触非常に良好、指で擦ると硬くなる
C :指で擦るとわずかに粘着性がある
D :粘着性残留
E :粘着性大
本出願は、2014年9月4日付で出願された日本特許出願2014-180279に基づいており、その全体が引用により援用される。
2 水幕板
3 塗料噴霧装置
21 吹き付け室
22 水幕板
23 エリミネーター
24 排気ダクト
25 水槽
27 ピット
Claims (10)
- 水性塗料及び/又は溶剤系塗料を含む湿式塗装ブース循環水の処理剤であって、重量平均分子量が3,000を超え、100,000以下のフェノール樹脂を有効成分とすることを特徴とする湿式塗装ブース循環水処理剤。
- 請求項1において、前記フェノール樹脂が、ノボラック型フェノール樹脂及びノボラック型フェノール樹脂を原料樹脂として二次反応させて得られる二次反応フェノール樹脂の中から選ばれる少なくとも1種であることを特徴とする湿式塗装ブース循環水処理剤。
- 請求項2において、前記二次反応フェノール樹脂が、ノボラック型フェノール樹脂のアルカリ水溶液にアルデヒド類を加え、ノボラック型フェノール樹脂と反応させて得られるものであることを特徴とする湿式塗装ブース循環水処理剤。
- 請求項1ないし3のいずれか1項において、前記フェノール樹脂がフェノール樹脂のアルカリ水溶液とされていることを特徴とする湿式塗装ブース循環水処理剤。
- 請求項1ないし4のいずれか1項において、前記フェノール樹脂が重量平均分子量5,000~30,000のフェノール樹脂であることを特徴とする湿式塗装ブース循環水処理剤。
- 水性塗料及び/又は溶剤系塗料を含む湿式塗装ブース循環水に、請求項1ないし5のいずれか1項に記載の湿式塗装ブース循環水処理剤を添加して、該循環水中の塗料を凝集処理することを特徴とする湿式塗装ブース循環水処理方法。
- 請求項6において、前記湿式塗装ブース循環水に、前記湿式塗装ブース循環水処理剤を、前記フェノール樹脂の有効成分量が1~200mg/Lとなるように添加することを特徴とする湿式塗装ブース循環水処理方法。
- 請求項6又は7において、前記湿式塗装ブース循環水に、更にアルミニウム系凝集剤及び/又はカチオン系ポリマーを添加することを特徴とする湿式塗装ブース循環水処理方法。
- 請求項8において、前記湿式塗装ブース循環水に、該アルミニウム系凝集剤を有効成分量が1~200mg/L、及び/又は、該カチオン系ポリマーを有効成分量が5~50mg/Lとなるように添加することを特徴とする湿式塗装ブース循環水処理方法。
- 請求項6ないし9のいずれか1項において、前記湿式塗装ブース循環水に前記湿式塗装ブース循環水処理剤を添加した後、更に高分子凝集処理剤を添加して凝集処理することを特徴とする湿式塗装ブース循環水処理方法。
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0370780A (ja) * | 1989-08-09 | 1991-03-26 | Kurita Water Ind Ltd | 湿式スプレーブース処理剤 |
JP2012210613A (ja) * | 2011-03-31 | 2012-11-01 | Kurita Water Ind Ltd | 排水の処理方法 |
JP2014124612A (ja) * | 2012-12-27 | 2014-07-07 | Kurita Water Ind Ltd | フォトリソグラフィー排水の処理方法 |
JP2014155916A (ja) * | 2013-02-18 | 2014-08-28 | Kurita Water Ind Ltd | 湿式塗装ブース循環水の処理方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4558080A (en) * | 1984-01-24 | 1985-12-10 | Dearborn Chemical Company | Stable tannin based polymer compound |
US4913825A (en) * | 1988-05-27 | 1990-04-03 | W. R. Grace & Co.-Conn. | Method for controlling overspray in paint spray booths |
US4863615A (en) * | 1988-08-01 | 1989-09-05 | Nalco Chemical Company | Cationic coagulants plus collidal silica for use in paint detackification |
US5830315A (en) * | 1995-07-06 | 1998-11-03 | Betzdearborn Inc. | Treatment of Aqueous systems using a chemically modified tannin |
US7338758B2 (en) * | 2001-02-08 | 2008-03-04 | Mayo Foundation For Medical Education And Research. | Compositions and methods for the identification, assessment, prevention and therapy of human cancers |
JP4697130B2 (ja) * | 2006-12-15 | 2011-06-08 | 栗田工業株式会社 | 湿式ブース循環水の処理方法 |
JP2009022852A (ja) * | 2007-07-18 | 2009-02-05 | Kurita Water Ind Ltd | 湿式塗装ブース循環水の処理方法 |
JP5407994B2 (ja) * | 2009-08-11 | 2014-02-05 | 栗田工業株式会社 | 水処理方法及び水処理凝集剤 |
JP5407706B2 (ja) * | 2009-09-29 | 2014-02-05 | 栗田工業株式会社 | 湿式塗装ブース循環水の処理方法 |
JP5573262B2 (ja) * | 2010-03-18 | 2014-08-20 | 栗田工業株式会社 | 湿式塗装ブース循環水の処理方法 |
CN102718297B (zh) * | 2012-06-13 | 2017-06-23 | 丰信精细化工(上海)有限公司 | 一种高浓度高分子聚硅型絮凝剂 |
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- 2015-08-31 MY MYPI2017700330A patent/MY182148A/en unknown
- 2015-08-31 BR BR112017003145A patent/BR112017003145A2/pt not_active Application Discontinuation
- 2015-08-31 EP EP15837989.1A patent/EP3190092A4/en active Pending
- 2015-08-31 WO PCT/JP2015/074632 patent/WO2016035743A1/ja active Application Filing
- 2015-08-31 US US15/329,743 patent/US20170210645A1/en not_active Abandoned
- 2015-08-31 CN CN201580033940.3A patent/CN106660840B/zh active Active
- 2015-09-04 TW TW104129386A patent/TWI679054B/zh active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0370780A (ja) * | 1989-08-09 | 1991-03-26 | Kurita Water Ind Ltd | 湿式スプレーブース処理剤 |
JP2012210613A (ja) * | 2011-03-31 | 2012-11-01 | Kurita Water Ind Ltd | 排水の処理方法 |
JP2014124612A (ja) * | 2012-12-27 | 2014-07-07 | Kurita Water Ind Ltd | フォトリソグラフィー排水の処理方法 |
JP2014155916A (ja) * | 2013-02-18 | 2014-08-28 | Kurita Water Ind Ltd | 湿式塗装ブース循環水の処理方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017170234A1 (ja) * | 2016-03-31 | 2017-10-05 | 栗田工業株式会社 | 湿式塗装ブース循環水処理剤及び湿式塗装ブース循環水の処理方法 |
JP6233549B1 (ja) * | 2016-03-31 | 2017-11-22 | 栗田工業株式会社 | 湿式塗装ブース循環水の不粘着化処理剤及び湿式塗装ブース循環水の不粘着化処理方法 |
US10745302B2 (en) | 2016-03-31 | 2020-08-18 | Kurita Water Industries Ltd. | Method for treating water that circulates through wet paint booth |
Also Published As
Publication number | Publication date |
---|---|
TWI679054B (zh) | 2019-12-11 |
US20170210645A1 (en) | 2017-07-27 |
CN106660840A (zh) | 2017-05-10 |
MY182148A (en) | 2021-01-18 |
EP3190092A4 (en) | 2018-04-11 |
EP3190092A1 (en) | 2017-07-12 |
CN106660840B (zh) | 2021-07-13 |
BR112017003145A2 (pt) | 2017-11-28 |
JP2016052639A (ja) | 2016-04-14 |
TW201628693A (zh) | 2016-08-16 |
JP6507531B2 (ja) | 2019-05-08 |
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