CN112724377A - Preparation method of process liquid formaldehyde-removing resin - Google Patents
Preparation method of process liquid formaldehyde-removing resin Download PDFInfo
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- CN112724377A CN112724377A CN202011574890.9A CN202011574890A CN112724377A CN 112724377 A CN112724377 A CN 112724377A CN 202011574890 A CN202011574890 A CN 202011574890A CN 112724377 A CN112724377 A CN 112724377A
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- gelatin
- maleic anhydride
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- 229920005989 resin Polymers 0.000 title claims abstract description 54
- 239000011347 resin Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000007788 liquid Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 32
- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical compound CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 claims abstract description 29
- 108010010803 Gelatin Proteins 0.000 claims abstract description 28
- 229920000159 gelatin Polymers 0.000 claims abstract description 28
- 239000008273 gelatin Substances 0.000 claims abstract description 28
- 235000019322 gelatine Nutrition 0.000 claims abstract description 28
- 235000011852 gelatine desserts Nutrition 0.000 claims abstract description 28
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229960003656 ricinoleic acid Drugs 0.000 claims abstract description 27
- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 claims abstract description 27
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims abstract description 26
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000008096 xylene Substances 0.000 claims abstract description 22
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 claims abstract description 16
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 229920000180 alkyd Polymers 0.000 claims abstract description 15
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 230000035484 reaction time Effects 0.000 claims abstract description 15
- -1 isopropyl ester Chemical class 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 16
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 14
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 14
- 239000012043 crude product Substances 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 14
- 238000007865 diluting Methods 0.000 claims description 7
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 claims description 2
- 229920002261 Corn starch Polymers 0.000 claims description 2
- 239000001361 adipic acid Substances 0.000 claims description 2
- 235000011037 adipic acid Nutrition 0.000 claims description 2
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 claims description 2
- 235000020661 alpha-linolenic acid Nutrition 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000008120 corn starch Substances 0.000 claims description 2
- 239000001530 fumaric acid Substances 0.000 claims description 2
- 229960004488 linolenic acid Drugs 0.000 claims description 2
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- 239000003784 tall oil Substances 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 230000008929 regeneration Effects 0.000 abstract description 6
- 238000011069 regeneration method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004321 preservation Methods 0.000 abstract description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 25
- 239000007789 gas Substances 0.000 description 2
- 230000007794 irritation Effects 0.000 description 2
- 235000015073 liquid stocks Nutrition 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000009982 effect on human Effects 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- SDYPTODXHIAHDF-ACQXMXPUSA-N propan-2-yl (z,12r)-12-hydroxyoctadec-9-enoate Chemical compound CCCCCC[C@@H](O)C\C=C/CCCCCCCC(=O)OC(C)C SDYPTODXHIAHDF-ACQXMXPUSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/46—Polyesters chemically modified by esterification
- C08G63/48—Polyesters chemically modified by esterification by unsaturated higher fatty oils or their acids; by resin acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a preparation method of process liquid formaldehyde-removing resin, which relates to the field of resin, and comprises the following steps: s1, preparing 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 tank of nitrogen and 1 part of an anti-aging agent; and S2, reacting ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol, introducing nitrogen into the ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol during reaction, controlling the reaction temperature to be 150-250 ℃ and the reaction time to be 5 hours, and thus obtaining the rough alkyd resin. The process liquid aldehyde-removing resin has better aldehyde-removing capability and economic effect on the process liquid, has similar mass/volume exchange capacity capability but lower price and has excellent economic effect compared with the common similar products sold in the market; the process liquid formaldehyde-removing resin has good quality/volume exchange capacity performance preservation degree after regeneration in the process liquid processing field.
Description
Technical Field
The invention relates to the field of resin, in particular to a preparation method of a process liquid formaldehyde-removing resin.
Background
Formaldehyde is an organic chemical of the formula HCHO or CH2O, molecular weight 30.03, also known as formil. Is colorless gas with irritation, has irritation effect on human eyes and nose, has relative gas density of 1.067, liquid density of 0.815g/cm3, melting point of-92 deg.C, boiling point of-19.5 deg.C, and is easily soluble in water and ethanol, and the concentration of water solution can be up to 55%, and is generally 35%-40%, usually 37%, called formalin.
The process liquid generally needs to remove aldehyde through resin, the quality/volume exchange capacity performance of various commercially available resins is obviously reduced after regeneration, so that the sewage treatment cost is increased, and the commercially available resins are extremely high in purchase cost due to high price.
Disclosure of Invention
The invention aims to: in order to solve the problems of high cost and large performance damage after regeneration of the existing sewage treatment, a preparation method of the process liquid formaldehyde-removing resin is provided.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of process liquid formaldehyde-removing resin comprises the following steps:
s1, preparing 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 tank of nitrogen and 1 part of an anti-aging agent;
s2, reacting ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol, introducing nitrogen into the ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol during reaction, controlling the reaction temperature at 150-250 ℃ and the reaction time at 5 hours to obtain a rough alkyd resin;
s3, dissolving and mixing the rough alkyd resin and xylene, and filtering after mixing and dissolving to obtain a resin solution;
s4, mixing the resin solution with isopropanol and ethanol, slowly adding n-butyl acetate and an anti-aging agent, controlling the reaction temperature at 50-250 ℃ and the reaction time at 3 hours to obtain a crude product;
and S5, diluting the crude product with xylene, controlling the reaction temperature at 170 ℃, and filtering through a 20-micron filter screen when the temperature is reduced to 140 ℃ to obtain the process feed liquid formaldehyde-removing resin.
Preferably, the ratio of pentaerythritol, ricinoleic acid, isopropyl ester, ethanol, maleic anhydride is 1:0.2:0.3:0.5: 0.5.
Preferably, the gelatin may be replaced by corn starch mixed with water or the like.
Preferably, the aqueous solution of gelatin has a mass percent concentration of 2%.
Preferably, the ricinoleic acid may be replaced by one or more of linoleic acid, linolenic acid, dehydrated ricinoleic acid, tall oil oleic acid, adipic acid, fumaric acid or maleic anhydride.
Compared with the prior art, the invention has the beneficial effects that:
1. the process liquid aldehyde-removing resin has better aldehyde-removing capability and economic effect on the process liquid, has similar mass/volume exchange capacity capability but lower price and has excellent economic effect compared with the common similar products sold in the market;
2. the process liquid formaldehyde-removing resin has good quality/volume exchange capacity performance preservation degree after regeneration in the process liquid processing field.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
S1, preparing 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 tank of nitrogen and 1 part of an anti-aging agent;
s2, reacting ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol, introducing nitrogen into the ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol during reaction, controlling the reaction temperature at 150 ℃ and the reaction time at 5 hours to obtain crude alkyd resin;
s3, dissolving and mixing the rough alkyd resin and xylene, and filtering after mixing and dissolving to obtain a resin solution;
s4, mixing the resin solution with isopropanol and ethanol, slowly adding n-butyl acetate and an anti-aging agent, controlling the reaction temperature at 50 ℃ and the reaction time at 3 hours to obtain a crude product;
and S5, diluting the crude product with xylene, controlling the reaction temperature at 170 ℃, and filtering through a 20-micron filter screen when the temperature is reduced to 140 ℃ to obtain the process feed liquid formaldehyde-removing resin.
Example 2
S1, preparing 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 tank of nitrogen and 1 part of an anti-aging agent;
s2, reacting ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol, introducing nitrogen into the ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol during reaction, controlling the reaction temperature at 150 ℃ and the reaction time at 5 hours to obtain crude alkyd resin;
s3, dissolving and mixing the rough alkyd resin and xylene, and filtering after mixing and dissolving to obtain a resin solution;
s4, mixing the resin solution with isopropanol and ethanol, slowly adding n-butyl acetate and an anti-aging agent, controlling the reaction temperature at 250 ℃ and the reaction time at 3 hours to obtain a crude product;
and S5, diluting the crude product with xylene, controlling the reaction temperature at 170 ℃, and filtering through a 20-micron filter screen when the temperature is reduced to 140 ℃ to obtain the process feed liquid formaldehyde-removing resin.
Example 3
S1, preparing 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 tank of nitrogen and 1 part of an anti-aging agent;
s2, reacting ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol, introducing nitrogen into the ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol during reaction, controlling the reaction temperature at 250 ℃ and the reaction time at 5 hours to obtain crude alkyd resin;
s3, dissolving and mixing the rough alkyd resin and xylene, and filtering after mixing and dissolving to obtain a resin solution;
s4, mixing the resin solution with isopropanol and ethanol, slowly adding n-butyl acetate and an anti-aging agent, controlling the reaction temperature at 50 ℃ and the reaction time at 3 hours to obtain a crude product;
and S5, diluting the crude product with xylene, controlling the reaction temperature at 170 ℃, and filtering through a 20-micron filter screen when the temperature is reduced to 140 ℃ to obtain the process feed liquid formaldehyde-removing resin.
Example 4
S1, preparing 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 tank of nitrogen and 1 part of an anti-aging agent;
s2, reacting ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol, introducing nitrogen into the ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol during reaction, controlling the reaction temperature at 250 ℃ and the reaction time at 5 hours to obtain crude alkyd resin;
s3, dissolving and mixing the rough alkyd resin and xylene, and filtering after mixing and dissolving to obtain a resin solution;
s4, mixing the resin solution with isopropanol and ethanol, slowly adding n-butyl acetate and an anti-aging agent, controlling the reaction temperature at 250 ℃ and the reaction time at 3 hours to obtain a crude product;
and S5, diluting the crude product with xylene, controlling the reaction temperature at 170 ℃, and filtering through a 20-micron filter screen when the temperature is reduced to 140 ℃ to obtain the process feed liquid formaldehyde-removing resin.
Example 5
S1, preparing 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 tank of nitrogen and 1 part of an anti-aging agent;
s2, reacting ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol, introducing nitrogen into the ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol during reaction, controlling the reaction temperature at 200 ℃ and the reaction time at 5 hours to obtain crude alkyd resin;
s3, dissolving and mixing the rough alkyd resin and xylene, and filtering after mixing and dissolving to obtain a resin solution;
s4, mixing the resin solution with isopropanol and ethanol, slowly adding n-butyl acetate and an anti-aging agent, controlling the reaction temperature at 200 ℃ and the reaction time at 3 hours to obtain a crude product;
and S5, diluting the crude product with xylene, controlling the reaction temperature at 170 ℃, and filtering through a 20-micron filter screen when the temperature is reduced to 140 ℃ to obtain the process feed liquid formaldehyde-removing resin.
Example 6
After fully stirring a certain process feed liquid stock solution, evenly dividing the process feed liquid stock solution into 7 parts, respectively carrying out decolorization treatment by using the resins prepared in the examples 1, 2, 3, 4 and 5 of the invention, and measuring the mass/volume exchange capacity of the commercial resins, namely, domestic 1 and domestic 2, wherein the results are shown in table 1.
Table 1 comparison of the resins obtained in examples 1, 2, 3, 4 and 5 with commercially available resins (the numerical units in the table are in mol/l):
as can be seen from Table 1, the resin prepared in examples 3 and 4 of the present invention has a mass/volume exchange capacity performance for the total exchange capacity of formaldehyde in the process feed liquid similar to that of commercially available resins, namely, domestic 1 and domestic 2, and both the mass/volume exchange capacity performance is 4.5 or more, the mass/volume exchange capacity performance for the total exchange capacity of formaldehyde in the process feed liquid after the resin prepared in example 4 of the present invention is once regenerated is still 4.5 or more, the mass/volume exchange capacity performance for the total exchange capacity of formaldehyde in the process feed liquid after the resin prepared in example 4 is twice regenerated is still 4.5, while the mass/volume exchange capacity performance for the total exchange capacity of formaldehyde in the process feed liquid after the resin prepared in example 2 is the highest after the resin prepared in the first use and the first regeneration, but the mass/volume exchange capacity performance for the total exchange capacity of formaldehyde in the process feed liquid after the second regeneration is greatly reduced, therefore, the resin prepared in the embodiment 4 of the invention has the quality/volume exchange capacity performance similar to that of the commercial resin on the full exchange capacity of the formaldehyde in the process liquid, but has the advantages of good reproducibility, long service life, better economic effect and cost saving.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. A preparation method of process liquid formaldehyde-removing resin is characterized by comprising the following steps: the preparation method of the process liquid formaldehyde-removing resin comprises the following steps:
s1, preparing 20 parts of pentaerythritol, 4 parts of ricinoleic acid, 6 parts of isopropyl ester, 10 parts of ethanol, 10 parts of maleic anhydride, 2 parts of gelatin, 25 parts of xylene, 1 tank of nitrogen and 1 part of an anti-aging agent;
s2, reacting ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol, introducing nitrogen into the ricinoleic acid, maleic anhydride, phthalic anhydride, gelatin and pentaerythritol during reaction, controlling the reaction temperature at 150-250 ℃ and the reaction time at 5 hours to obtain a rough alkyd resin;
s3, dissolving and mixing the rough alkyd resin and xylene, and filtering after mixing and dissolving to obtain a resin solution;
s4, mixing the resin solution with isopropanol and ethanol, slowly adding n-butyl acetate and an anti-aging agent, controlling the reaction temperature at 50-250 ℃ and the reaction time at 3 hours to obtain a crude product;
and S5, diluting the crude product with xylene, controlling the reaction temperature at 170 ℃, and filtering through a 20-micron filter screen when the temperature is reduced to 140 ℃ to obtain the process feed liquid formaldehyde-removing resin.
2. The method for preparing the aldehyde-removing resin of the process liquid according to claim 1, which is characterized in that: the ratio of the pentaerythritol to the ricinoleic acid to the isopropyl ester to the ethanol to the maleic anhydride is 1:0.2:0.3:0.5: 0.5.
3. The method for preparing the aldehyde-removing resin of the process liquid according to claim 1, which is characterized in that: the gelatin can be replaced by corn starch mixed with water or other similar products.
4. The method for preparing the aldehyde-removing resin of the process liquid according to claim 1, which is characterized in that: the mass percentage concentration of the aqueous solution of the gelatin is 2%.
5. The method for preparing the aldehyde-removing resin of the process liquid according to claim 1, which is characterized in that: the ricinoleic acid may be replaced by one or more of linoleic acid, linolenic acid, dehydrated ricinoleic acid, tall oil acid, adipic acid, fumaric acid or maleic anhydride.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011574890.9A CN112724377A (en) | 2020-12-28 | 2020-12-28 | Preparation method of process liquid formaldehyde-removing resin |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011574890.9A CN112724377A (en) | 2020-12-28 | 2020-12-28 | Preparation method of process liquid formaldehyde-removing resin |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179170A (en) * | 2011-03-15 | 2011-09-14 | 上海格伦化学科技有限公司 | Formaldehyde-removing alkyd resin and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179170A (en) * | 2011-03-15 | 2011-09-14 | 上海格伦化学科技有限公司 | Formaldehyde-removing alkyd resin and preparation method thereof |
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Application publication date: 20210430 |