CN111500195A - Preparation method of drier for preventing surface skinning - Google Patents
Preparation method of drier for preventing surface skinning Download PDFInfo
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- CN111500195A CN111500195A CN202010448077.0A CN202010448077A CN111500195A CN 111500195 A CN111500195 A CN 111500195A CN 202010448077 A CN202010448077 A CN 202010448077A CN 111500195 A CN111500195 A CN 111500195A
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- organic phase
- rare earth
- isooctanoate
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- 238000002360 preparation method Methods 0.000 title claims description 8
- OEOIWYCWCDBOPA-UHFFFAOYSA-N 6-methyl-heptanoic acid Chemical compound CC(C)CCCCC(O)=O OEOIWYCWCDBOPA-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 29
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 18
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 18
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 18
- 239000011734 sodium Substances 0.000 claims abstract description 18
- 239000010941 cobalt Substances 0.000 claims abstract description 15
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 15
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 15
- -1 rare earth isooctanoate Chemical class 0.000 claims abstract description 10
- LSKJZEDMESDBLU-UHFFFAOYSA-L manganese(2+);6-methylheptanoate Chemical compound [Mn+2].CC(C)CCCCC([O-])=O.CC(C)CCCCC([O-])=O LSKJZEDMESDBLU-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 49
- 239000012074 organic phase Substances 0.000 claims description 48
- 238000005406 washing Methods 0.000 claims description 19
- 239000002904 solvent Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 16
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 11
- 239000008096 xylene Substances 0.000 claims description 9
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 7
- 229910052748 manganese Inorganic materials 0.000 claims description 7
- 239000011572 manganese Substances 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 150000007942 carboxylates Chemical class 0.000 abstract description 2
- 229910000361 cobalt sulfate Inorganic materials 0.000 abstract description 2
- 229940044175 cobalt sulfate Drugs 0.000 abstract description 2
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 abstract description 2
- 229940099596 manganese sulfate Drugs 0.000 abstract description 2
- 239000011702 manganese sulphate Substances 0.000 abstract description 2
- 235000007079 manganese sulphate Nutrition 0.000 abstract description 2
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000003973 paint Substances 0.000 description 14
- 239000000344 soap Substances 0.000 description 10
- 229920000180 alkyd Polymers 0.000 description 8
- 229910001410 inorganic ion Inorganic materials 0.000 description 6
- 238000007605 air drying Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 150000007519 polyprotic acids Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09F—NATURAL RESINS; FRENCH POLISH; DRYING-OILS; OIL DRYING AGENTS, i.e. SICCATIVES; TURPENTINE
- C09F9/00—Compounds to be used as driers, i.e. siccatives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The method takes isooctanoic acid as a main raw material, firstly isooctanoic acid reacts with sodium hydroxide solution to generate sodium isooctanoate, and further reacts with cobalt sulfate, manganese sulfate and rare earth to generate cobalt isooctanoate, manganese isooctanoate and rare earth isooctanoate, and then the 3 carboxylates are compounded according to a certain optimized proportion to obtain the drier for preventing surface skinning. The invention not only obviously reduces the dosage of cobalt, but also simplifies the production process, and is beneficial to production management and control.
Description
Technical Field
The invention relates to the technical field of paint and paint drying agents, in particular to a preparation method of a drying agent for preventing surface skinning.
Background
In the coatings industry, air-drying alkyd resins prepared from polyols, polybasic acids and fatty acids are a broad range of film formers. The curing process of the air-drying alkyd resin is similar to the automatic oxidation curing process of grease, and comprises an induction stage, a peroxide formation stage, a peroxide decomposition stage and a polymerization stage, and the curing speed of the air-drying alkyd resin is quite slow in the absence of a drier. It has been found that when a small amount of a metal soap (i.e., a drier) is added to an air-drying alkyd paint, the curing time is greatly reduced, and thus, driers are widely used in quick-drying alkyd paints.
The drier is generally a soap salt of an alkaline earth metal or a heavy metal, and its anion or ligand portion is required to be miscible with the film former and the solvent in order to be well dispersed. The traditional alkyd paint adopts driers such as cobalt, lead, manganese and the like to control the drying time of a paint film. But are used in relatively large amounts. Researches show that the rare earth elements have valence-variable property and coordination property, and the mixed rare earth drier can promote the actual drying of paints such as alkyd resin and the like. The paint film is superior to the traditional drier in the aspects of solid drying rate, hardness and solvent resistance, and the dosage of the paint film is only 40-80% of the total amount of the drier such as lead soap, manganese soap, zinc soap, calcium soap and the like, so that the paint cost can be obviously reduced. The mixed rare earth drier can completely replace the driers such as lead soap, manganese soap, zinc soap, calcium soap and the like, simplifies the traditional 5 mixed driers into a 2 mixed drier system, obviously reduces the dosage of cobalt, simplifies the production process and is beneficial to production management and control. The mixed rare earth drier has no lead poison, can be used for toy paint and other lead-free coatings, can improve the bottom dryness, improve the adhesive force, water resistance and gasoline resistance of a paint film, and obviously improve the coating quality. The mixed rare earth drier product tends to be serialized, has better use effect in alkyd paint and magnetism than in grease glue and phenolic paint, is gradually applied and expanded in coating, and has obvious economic benefit and environmental benefit.
Disclosure of Invention
The invention aims to provide a preparation method of a drier capable of reducing the consumption of cobalt, simplifying the production process flow and preventing surface skinning, which comprises the following specific scheme:
the preparation method of the drier for preventing the surface from skinning is characterized by comprising the following steps:
step 1, adding isooctanoic acid with the total solvent mass of 40-70% and deionized water into a multi-port reaction kettle with a stirring structure and a reflux condenser, heating to 90 ℃ by using a constant-temperature oil bath, adding a certain amount of 95% sodium hydroxide solution into the reaction kettle, controlling the reaction temperature to be 90-95 ℃, and saponifying for 1-1.5 hours under stirring to obtain a sodium isooctanoic acid solution;
step 2, adding a certain amount of xylene solvent into a proper amount of sodium isooctanoate solution obtained in the step 1, fully shaking up for dissolving, and slowly adding the mixture for preparationGood mass fraction is 20% CoSO4Reacting the feed liquid for 1.5-2.0 h at the temperature of 95-98 ℃, transferring the reacted liquid into a separating funnel, standing for layering, and then carrying out liquid separation operation to obtain an upper layer liquid as an organic phase; then, washing the organic phase by using 40 ℃ water with the volume being half of the volume of the organic phase, repeatedly operating for 2-3 times, and then distilling and concentrating to prepare a 10% cobalt isooctanoate solution;
step 3, adding a certain amount of xylene solvent into a proper amount of sodium isooctanoate solution obtained in the step 1, fully shaking up for dissolving, and slowly adding anhydrous CaCl with the mass fraction of 25%2Reacting the feed liquid for 1.5-2.0 h at the temperature of 92-95 ℃, transferring the reacted liquid into a separating funnel, standing for layering, and then carrying out liquid separation operation to obtain an upper layer liquid as an organic phase; then, washing the organic phase by using 40 ℃ water with the volume being half of the volume of the organic phase, repeatedly operating for 2-3 times, and then distilling and concentrating to obtain 8% manganese isooctoate solution;
step 4, taking a certain amount of rare earth, and dissolving the rare earth into a rare earth feed liquid with the mass fraction of 25% by using a solvent for later use; adding a certain amount of dimethylbenzene into the sodium isooctanoate solution obtained in the step 1, sufficiently shaking for dissolving, slowly adding the rare earth feed liquid, reacting for 0.5-1.0 h at the temperature of 82-85 ℃, transferring the reacted liquid into a separating funnel, standing for layering, and carrying out liquid separation operation to obtain an upper layer liquid as an organic phase; then, washing the organic phase by using 40 ℃ water with the volume being half of the amount of the organic phase, repeatedly operating for 2-3 times, and then distilling and concentrating to obtain 12% rare earth isooctanoate solution;
and 5, taking a certain amount of 10% cobalt isooctanoate solution obtained in the step 2, adding 8% manganese isooctanoate solution obtained in the step 3, stirring at normal temperature for 25-40 min, then adding 12% rare earth isooctanoate solution obtained in the step 4, and stirring for 35-40 min to obtain the required aqueous drier.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly has the following advantages:
the method takes isooctanoic acid as a main raw material, firstly isooctanoic acid reacts with sodium hydroxide solution to generate sodium isooctanoate, and further reacts with cobalt sulfate, manganese sulfate and rare earth to generate cobalt isooctanoate, manganese isooctanoate and rare earth isooctanoate, and then the 3 carboxylates are compounded according to a certain optimized proportion to obtain the drier for preventing surface skinning. The invention not only obviously reduces the dosage of cobalt, but also simplifies the production process, and is beneficial to production management and control.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
Example 1:
the preparation method of the drier for preventing the surface from skinning is characterized by comprising the following steps:
step 1, adding an isooctanoic acid solution with a solvent mass sum of 40% and deionized water into a multi-port reaction kettle with a stirring structure and a reflux condenser, heating to 90 ℃ by using a constant-temperature oil bath, adding a certain amount of 95% sodium hydroxide solution into the reaction kettle, controlling the reaction temperature to be 92 ℃, and saponifying for 1.2 hours under stirring to obtain a sodium isooctanoic acid solution;
step 2, taking 80m of sodium isooctanoate solution obtained in the step 1 of L, slowly adding 75m of xylene solvent L, fully shaking up for dissolving, and then slowly adding 20 mass percent of CoSO of 80m of L4The feed liquid reacts for 1.5 hours under the condition of controlling the temperature at 92 ℃; transferring the reacted liquid into a separating funnel, standing for layering, performing liquid separation to obtain upper layer liquid, namely organic phase, and removing SO4 in the organic phase2-Washing the organic phase with 40 deg.C hot water with a volume half of that of the organic phase by using inorganic ions, repeating for 3 times, distilling the organic phase after washing, and concentrating to obtain 10% cobalt iso-octoate product;
step 3, adding 60m L of the sodium isooctanoate solution obtained in the step 1 slowly into 45m L of xylene solvent, fully shaking up for dissolving, and then slowly adding 70m L of anhydrous CaCl with the mass fraction of 25%2The feed liquid reacts for 1.5 hours under the condition of controlling the temperature at 92 ℃; transferring the reacted liquid into a separating funnel, standing for layering, and separating to obtain upper layer liquid, i.e. organic phase for removing organic substancesSO4 in phase2-Washing the organic phase with 40 deg.C hot water with a volume half of that of the organic phase by using inorganic ions, repeating for 2 times, distilling the organic phase after washing, and concentrating to obtain 8% manganese isooctoate solution;
step 4, dissolving 25g of rare earth by using a solvent for later use, adding 80m L of dimethylbenzene into the sodium isooctanoate solution obtained in the step 1, fully shaking up and dissolving, then slowly adding 25% of prepared rare earth feed liquid, controlling the temperature at 85 ℃, reacting for 0.5h, transferring the reacted liquid into a separating funnel, standing and layering, then carrying out liquid separation operation to obtain an upper layer liquid, namely an organic phase, and in order to remove SO4 in the organic phase2-Washing the organic phase with 40 deg.C hot water with a volume half of that of the organic phase by using inorganic ions, repeating for 3 times, distilling the organic phase after washing, and concentrating to obtain 12% rare earth isooctanoate solution;
and 5, taking 20m L of 10 percent cobalt isooctanoate solution obtained in the step 2, adding 20m L of 8 percent manganese isooctanoate solution obtained in the step 3, stirring for 25min at normal temperature, adding 20m L of 12 percent rare earth isooctanoate solution obtained in the step 4, and stirring for 35min to obtain the required aqueous drier CY-4.
Example 2:
the preparation method of the drier for preventing the surface from skinning is characterized by comprising the following steps:
step 1, adding isooctanoic acid and deionized water with the total solvent mass of 40% into a multi-port reaction kettle with a stirring and reflux condenser, heating to 90 ℃ by using a constant-temperature oil bath, adding a certain amount of 95% sodium hydroxide solution into the reaction kettle, controlling the reaction temperature to be 93 ℃, and saponifying for 1.2 hours under stirring to obtain a sodium isooctanoate solution;
step 2, taking 80m of the sodium isooctanoate solution obtained in the step 1 of L, slowly adding 80m of a xylene solvent L, fully shaking up to dissolve, and then slowly adding 20 mass percent of CoSO of 65m of L4The feed liquid reacts for 2.0 hours under the condition of controlling the temperature at 95 ℃; transferring the reacted liquid into a separating funnel, standing for layering, performing liquid separation to obtain upper layer liquid, namely organic phase, and removing SO4 in the organic phase2-Plasma of inorganic ions with a volume ofWashing the organic phase with 40 deg.C hot water half the amount of the organic phase, repeating for 2 times, distilling the organic phase after washing, and concentrating to obtain 10% cobalt isooctanoate product;
step 3, adding 100m L of the sodium isooctanoate solution obtained in the step 1 slowly into 60m L of xylene solvent, fully shaking for dissolving, and then slowly adding 80m L of prepared anhydrous CaCl with the mass fraction of 25%2The feed liquid reacts for 1.0h under the condition of controlling the temperature at 95 ℃; transferring the reacted liquid into a separating funnel, standing for layering, performing liquid separation to obtain upper layer liquid, namely organic phase, and removing SO4 in the organic phase2-And (3) washing the organic phase by using inorganic ions, washing the organic phase by using hot water with the volume of 40 ℃ which is half of the volume of the organic phase, repeating the washing for 3 times, distilling the organic phase after the washing, and concentrating to obtain a manganese isooctoate solution with the concentration of 8%.
Step 4, dissolving 35g of rare earth by using a solvent for later use, adding a certain amount of 60m L xylene into the sodium isooctanoate solution obtained in the step 1, fully shaking up to dissolve, slowly adding a rare earth feed liquid with the mass fraction of 25%, reacting for 0.5h at 82 ℃, transferring the reacted liquid into a separating funnel, standing for layering, performing liquid separation operation to obtain an upper layer liquid, namely an organic phase, and removing SO4 in the organic phase2-Washing the organic phase with 40 deg.C hot water with a volume half of that of the organic phase by using inorganic ions, repeating for 3 times, distilling the organic phase after washing, and concentrating to obtain 12% rare earth isooctanoate solution;
and 5, taking 15m L of 10 percent cobalt isooctanoate solution obtained in the step 2, adding 25m L of 8 percent manganese isooctanoate solution obtained in the step 3, stirring for 25min at normal temperature, adding 20m L of 12 percent rare earth isooctanoate solution obtained in the step 4, and stirring for 30min to obtain the required aqueous drier CY-4.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (1)
1. The preparation method of the drier for preventing the surface from skinning is characterized by comprising the following steps:
step 1, adding isooctanoic acid with the total solvent mass of 40-70% and deionized water into a multi-port reaction kettle with a stirring structure and a reflux condenser, heating to 90 ℃ by using a constant-temperature oil bath, adding a certain amount of 95% sodium hydroxide solution into the reaction kettle, controlling the reaction temperature to be 90-95 ℃, and saponifying for 1-1.5 hours under stirring to obtain a sodium isooctanoic acid solution;
step 2, adding a certain amount of xylene solvent into a proper amount of sodium isooctanoate solution obtained in the step 1, fully shaking up for dissolving, and slowly adding prepared CoSO with the mass fraction of 20%4Reacting the feed liquid for 1.5-2.0 h at the temperature of 95-98 ℃, transferring the reacted liquid into a separating funnel, standing for layering, and then carrying out liquid separation operation to obtain an upper layer liquid as an organic phase; then, washing the organic phase by using 40 ℃ water with the volume being half of the volume of the organic phase, repeatedly operating for 2-3 times, and then distilling and concentrating to prepare a 10% cobalt isooctanoate solution;
step 3, adding a certain amount of xylene solvent into a proper amount of sodium isooctanoate solution obtained in the step 1, fully shaking up for dissolving, and slowly adding anhydrous CaCl with the mass fraction of 25%2Reacting the feed liquid for 1.5-2.0 h at the temperature of 92-95 ℃, transferring the reacted liquid into a separating funnel, standing for layering, and then carrying out liquid separation operation to obtain an upper layer liquid as an organic phase; then, washing the organic phase by using 40 ℃ water with the volume being half of the volume of the organic phase, repeatedly operating for 2-3 times, and then distilling and concentrating to obtain 8% manganese isooctoate solution;
step 4, taking a certain amount of rare earth, and dissolving the rare earth into a rare earth feed liquid with the mass fraction of 25% by using a solvent for later use; adding a certain amount of dimethylbenzene into the sodium isooctanoate solution obtained in the step 1, sufficiently shaking for dissolving, slowly adding the rare earth feed liquid, reacting for 0.5-1.0 h at the temperature of 82-85 ℃, transferring the reacted liquid into a separating funnel, standing for layering, and carrying out liquid separation operation to obtain an upper layer liquid as an organic phase; then, washing the organic phase by using 40 ℃ water with the volume being half of the amount of the organic phase, repeatedly operating for 2-3 times, and then distilling and concentrating to obtain 12% rare earth isooctanoate solution;
and 5, taking a certain amount of 10% cobalt isooctanoate solution obtained in the step 2, adding 8% manganese isooctanoate solution obtained in the step 3, stirring at normal temperature for 25-40 min, then adding 12% rare earth isooctanoate solution obtained in the step 4, and stirring for 35-40 min to obtain the required aqueous drier.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111410916A (en) * | 2020-05-25 | 2020-07-14 | 郑州中岳高新材料有限公司 | Preparation method of drier in white paint |
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