CN114249883A - Water-soluble oil dispersant and preparation method thereof - Google Patents
Water-soluble oil dispersant and preparation method thereof Download PDFInfo
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- CN114249883A CN114249883A CN202210012945.XA CN202210012945A CN114249883A CN 114249883 A CN114249883 A CN 114249883A CN 202210012945 A CN202210012945 A CN 202210012945A CN 114249883 A CN114249883 A CN 114249883A
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- 239000003924 oil dispersant Substances 0.000 title claims description 13
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims abstract description 35
- 239000003921 oil Substances 0.000 claims abstract description 19
- 235000019198 oils Nutrition 0.000 claims abstract description 19
- 229920005862 polyol Polymers 0.000 claims abstract description 9
- 150000003077 polyols Chemical class 0.000 claims abstract description 9
- 235000015112 vegetable and seed oil Nutrition 0.000 claims abstract description 6
- 239000008158 vegetable oil Substances 0.000 claims abstract description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 5
- 150000008065 acid anhydrides Chemical class 0.000 claims abstract description 5
- 229920000570 polyether Polymers 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 24
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 239000004533 oil dispersion Substances 0.000 claims description 12
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 12
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 12
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 claims description 6
- -1 PPG4000 Polymers 0.000 claims description 5
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 5
- 239000004359 castor oil Substances 0.000 claims description 5
- 235000019438 castor oil Nutrition 0.000 claims description 5
- JGFBRKRYDCGYKD-UHFFFAOYSA-N dibutyl(oxo)tin Chemical compound CCCC[Sn](=O)CCCC JGFBRKRYDCGYKD-UHFFFAOYSA-N 0.000 claims description 5
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 4
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 4
- 239000000944 linseed oil Substances 0.000 claims description 4
- 235000021388 linseed oil Nutrition 0.000 claims description 4
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 claims description 3
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 3
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 3
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 3
- 235000019483 Peanut oil Nutrition 0.000 claims description 3
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 3
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 3
- 239000000312 peanut oil Substances 0.000 claims description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000600 sorbitol Substances 0.000 claims description 3
- 229940014800 succinic anhydride Drugs 0.000 claims description 3
- 239000003784 tall oil Substances 0.000 claims description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 2
- 239000008118 PEG 6000 Substances 0.000 claims description 2
- 229920002535 Polyethylene Glycol 1500 Polymers 0.000 claims description 2
- 229920000604 Polyethylene Glycol 200 Polymers 0.000 claims description 2
- 229920002556 Polyethylene Glycol 300 Polymers 0.000 claims description 2
- 229920002560 Polyethylene Glycol 3000 Polymers 0.000 claims description 2
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 claims description 2
- 229920002582 Polyethylene Glycol 600 Polymers 0.000 claims description 2
- 229920002584 Polyethylene Glycol 6000 Polymers 0.000 claims description 2
- 229920002593 Polyethylene Glycol 800 Polymers 0.000 claims description 2
- 229920002594 Polyethylene Glycol 8000 Polymers 0.000 claims description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- JLFNLZLINWHATN-UHFFFAOYSA-N pentaethylene glycol Chemical compound OCCOCCOCCOCCOCCO JLFNLZLINWHATN-UHFFFAOYSA-N 0.000 claims description 2
- 229920002523 polyethylene Glycol 1000 Polymers 0.000 claims description 2
- 239000003549 soybean oil Substances 0.000 claims description 2
- 235000012424 soybean oil Nutrition 0.000 claims description 2
- 239000003973 paint Substances 0.000 abstract description 34
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 8
- 238000000227 grinding Methods 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 5
- 238000009472 formulation Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- LQZZUXJYWNFBMV-UHFFFAOYSA-N ethyl butylhexanol Natural products CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 3
- 150000005846 sugar alcohols Polymers 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension 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
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/676—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- 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
- C08G2150/00—Compositions for coatings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention relates to the technical field of dispersing agents, and provides a water-soluble oil dispersing agent and a preparation method thereof. The water-soluble oil dispersing agent comprises a component A, a component B, a component C and a component D, wherein the component A comprises 650 parts by weight of vegetable oil and 15-20 parts by weight of acid anhydride, the component B comprises 15-25 parts by weight of polyol, the component C comprises 145 parts by weight of polyether polyol 100-. Through the technical scheme, the problem that the cost of the paint is high due to the high price of the dispersing agent in the related technology is solved.
Description
Technical Field
The invention relates to the technical field of building coatings, in particular to a water-soluble oil dispersing agent and a preparation method thereof.
Background
The dispersing agent is an agent which promotes the uniform dispersion of material particles in a medium to form a stable suspension. The existing widely used dispersing agent is an amphiphilic chemical, and can increase the compatibility of oily and aqueous components in the same system.
Dispersants are generally classified into two major classes, inorganic dispersants and organic dispersants. The method is distinguished according to the structure and can be divided into the following steps: anionic type, cationic type, non-ionic type, amphoteric type, electric neutral type and high molecular weight hyperdispersant.
At present, however, the price of any type of dispersant is very high, ranging from dozens to hundreds of yuan, and the price of the coating of the acrylic emulsion system is low, but the cost is improved by 0.8-1.5 yuan/kg due to the use of a large amount of the dispersant.
Disclosure of Invention
The invention provides a water-soluble oil dispersing agent and a preparation method thereof, and solves the problem that the cost of a paint is high due to the high price of the dispersing agent in the related technology.
The technical scheme of the invention is as follows:
a water-soluble oil dispersant comprises a component A, a component B, a component C and a component D, and the components are calculated according to parts by weight,
the component A comprises 650 parts of vegetable oil 500-650 parts, 15-20 parts of acid anhydride,
the component B comprises 15-25 parts of polyol,
the component C comprises 145 portions of polyether polyol 100, 0.08 to 0.11 portion of catalyst,
the component D comprises 600 portions and 900 portions of deionized water.
As a further technical scheme, the catalyst is dibutyltin dilaurate or dibutyltin oxide.
As a further technical scheme, the vegetable oil is one or more of peanut oil, castor oil, dehydrated castor oil, linseed oil, soybean oil and tall oil.
As a further technical scheme, the acid anhydride is one of succinic anhydride, maleic anhydride and fumaric anhydride.
As a further technical scheme, the polyalcohol is one or more of pentaerythritol, dipentaerythritol, trimethylolpropane, glycerol, sorbitol and neopentyl glycol.
According to a further technical scheme, the polyether polyol is one or more of PEG200, PEG300, PEG400, PEG600, PEG800, PEG1000, PEG1500, PEG2000, PEG3000, PPG4000, PEG6000, PEG8000, fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ether, glycerol polyoxyethylene ether and nonylphenol polyoxyethylene ether.
The invention also provides a preparation method of the water-soluble oil dispersing agent, which is characterized by comprising the following steps:
s1, preparing materials according to the formula of the water-soluble oil dispersing agent;
s2, adding the component A, introducing nitrogen for protection, heating to 230 ℃, and then preserving heat for 2 hours;
s3, cooling to 180 ℃, adding the component B, heating to 220 ℃, and cooling to 190 ℃ when the acid value is 5-18 mgKOH/g;
s4, adding the component C, heating to 210 ℃, preserving heat for 3 hours, and cooling to 70 ℃;
and S5, adding the component D, and dispersing uniformly to obtain the water-soluble oil dispersing agent.
The working principle and the beneficial effects of the invention are as follows:
1. the water-soluble oil dispersing agent prepared by the invention has good dispersing performance, can disperse pigments, and the eighteen-carbon long-chain structure of the water-soluble oil dispersing agent also reduces the film forming temperature of the acrylic emulsion, so that the paint of the formula A can still well form a film even in the absence of a film forming auxiliary agent (dodecyl alcohol ester), and further the volatilization pollution of a solvent is reduced. Compared with the common dispersant on the market, the paint adopting the water-soluble oil dispersant has the advantages that the cost is reduced by at least 4.5 yuan/kg, the cost of the paint is greatly reduced, and the economic benefit is higher.
2. The water-soluble oil dispersant is adopted as the dispersant, so that the initial water resistance of the prepared paint film is good, and the paint film contains a large amount of grease in the formula A with the participation of the water-soluble oil dispersant, so that the initial water resistance of the paint film is improved, the glossiness of the paint film is obviously improved, and the salt spray resistance is improved by more than 3 times, so that the paint film has a wider application range and stronger practicability when being applied to some moderate anticorrosion and metal protection systems.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
Example 1
A method for preparing a water-soluble oil dispersion comprising the steps of:
s1, preparing materials according to the following weight:
and (2) component A: 645g of linseed oil, 20g of fumaric anhydride,
and (B) component: 25g of dipentaerythritol is added, and the amount of the dipentaerythritol is 25g,
and (3) component C: 145g of glycerol polyoxyethylene ether, 0.1g of dibutyltin laurate,
and (3) component D: 847g of deionized water;
s2, adding the component A into a four-mouth bottle provided with a thermometer, a stirrer, a heating jacket and nitrogen protection, introducing nitrogen protection, heating to 230 ℃, and then preserving heat for 2 hours;
s3, cooling to 180 ℃, adding the component B, heating to 220 ℃, and cooling to 190 ℃ when the acid value is 5-18 mgKOH/g;
s4, adding the component C, heating to 210 ℃, preserving heat for 3 hours, and cooling to 70 ℃;
and S5, adding the component D, and dispersing uniformly to obtain the water-soluble oil dispersing agent.
Example 2
A method for preparing a water-soluble oil dispersion comprising the steps of:
s1, preparing materials according to the following weight:
and (2) component A: 500g of tall oil, 15g of fumaric anhydride,
and (B) component: 15g of pentaerythritol, and the like in a total amount of 15g,
and (3) component C: 100g of fatty alcohol-polyoxyethylene ether, 0.1g of dibutyltin oxide,
and (3) component D: 630g of deionized water;
s2, adding the component A into a four-mouth bottle provided with a thermometer, a stirrer, a heating jacket and nitrogen protection, introducing nitrogen protection, heating to 230 ℃, and then preserving heat for 2 hours;
s3, cooling to 180 ℃, adding the component B, heating to 220 ℃, and cooling to 190 ℃ when the acid value is 5-18 mgKOH/g;
s4, adding the component C, heating to 210 ℃, preserving heat for 3 hours, and cooling to 70 ℃;
and S5, adding the component D, and dispersing uniformly to obtain the water-soluble oil dispersing agent.
Example 3
A method for preparing a water-soluble oil dispersion comprising the steps of:
s1, preparing materials according to the following weight:
and (2) component A: 650g of peanut oil, 20g of succinic anhydride,
and (B) component: 25g of sorbitol,
and (3) component C: 145g of glycerol polyoxyethylene ether, 0.1g of dibutyltin dilaurate,
and (3) component D: 900g of deionized water;
s2, adding the component A into a four-mouth bottle provided with a thermometer, a stirrer, a heating jacket and nitrogen protection, introducing nitrogen protection, heating to 230 ℃, and then preserving heat for 2 hours;
s3, cooling to 180 ℃, adding the component B, heating to 220 ℃, and cooling to 190 ℃ when the acid value is 5-18 mgKOH/g;
s4, adding the component C, heating to 210 ℃, preserving heat for 3 hours, and cooling to 70 ℃;
and S5, adding the component D, and dispersing uniformly to obtain the water-soluble oil dispersing agent.
Example 4
A method for preparing a water-soluble oil dispersion comprising the steps of:
s1, preparing materials according to the following weight:
and (2) component A: 550g of vegetable oil, 15g of maleic anhydride,
and (B) component: 20g of dipentaerythritol is added, and the amount of the dipentaerythritol is,
and (3) component C: 120g of nonylphenol polyoxyethylene ether, 0.08g of dibutyltin dilaurate,
and (3) component D: 600g of deionized water;
s2, adding the component A into a four-mouth bottle provided with a thermometer, a stirrer, a heating jacket and nitrogen protection, introducing nitrogen protection, heating to 230 ℃, and then preserving heat for 2 hours;
s3, cooling to 180 ℃, adding the component B, heating to 220 ℃, and cooling to 190 ℃ when the acid value is 5-18 mgKOH/g;
s4, adding the component C, heating to 210 ℃, preserving heat for 3 hours, and cooling to 70 ℃;
and S5, adding the component D, and dispersing uniformly to obtain the water-soluble oil dispersing agent.
Example 5
A method for preparing a water-soluble oil dispersion comprising the steps of:
s1, preparing materials according to the following weight:
and (2) component A: 600g of castor oil, 18g of fumaric anhydride,
and (B) component: 20g of a polyhydric alcohol (polyhydric alcohol),
and (3) component C: PEG 200130 g, dibutyltin oxide 0.1g,
and (3) component D: 700g of deionized water;
s2, adding the component A into a four-mouth bottle provided with a thermometer, a stirrer, a heating jacket and nitrogen protection, introducing nitrogen protection, heating to 230 ℃, and then preserving heat for 2 hours;
s3, cooling to 180 ℃, adding the component B, heating to 220 ℃, and cooling to 190 ℃ when the acid value is 5-18 mgKOH/g;
s4, adding the component C, heating to 210 ℃, preserving heat for 3 hours, and cooling to 70 ℃;
and S5, adding the component D, and dispersing uniformly to obtain the water-soluble oil dispersing agent.
Example 6
A method for preparing a water-soluble oil dispersion comprising the steps of:
s1, preparing materials according to the following weight:
and (2) component A: 600g of linseed oil, 18g of fumaric anhydride,
and (B) component: the weight of neopentyl glycol was 20g,
and (3) component C: PEG 3000130 g, dibutyltin oxide 0.11g,
and (3) component D: 800g of deionized water;
s2, adding the component A into a four-mouth bottle provided with a thermometer, a stirrer, a heating jacket and nitrogen protection, introducing nitrogen protection, heating to 230 ℃, and then preserving heat for 2 hours;
s3, cooling to 180 ℃, adding the component B, heating to 220 ℃, and cooling to 190 ℃ when the acid value is 5-18 mgKOH/g;
s4, adding the component C, heating to 210 ℃, preserving heat for 3 hours, and cooling to 70 ℃;
and S5, adding the component D, and dispersing uniformly to obtain the water-soluble oil dispersing agent.
Application example
The water-soluble oil dispersion prepared in example 1 and a conventional dispersion on the market were separately prepared, and the formulations were as follows:
TABLE 1 paint formulation
The paints were prepared according to formula a and formula B in the table, respectively, and the preparation process was as follows:
(1) grinding: uniformly mixing and dispersing the raw materials 1-6 in the formula A to obtain color paste A, and grinding the color paste A by using a horizontal grinder until the fineness is below 20 mu m; mixing the raw materials 1-7 in the formula B, dispersing uniformly to obtain color paste B, and grinding by using a horizontal grinder until the fineness is below 20 mu m;
(2) preparing paint: mixing the ground color paste A with the XG-9018 emulsion and other additives in the formula A to obtain a paint A;
mixing the ground color paste B with the XG-9018 emulsion and other additives in the formula B to obtain a paint B;
in the grinding process in the step (1), the grinding time for grinding the color paste A in the formula A and the color paste B in the formula B until the fineness is less than 20 mu m is 2 hours, which indicates that the grinding efficiency of the water-soluble oil dispersant prepared in the example 1 is equivalent to that of the common dispersant on the market.
The water-soluble oil dispersing agent prepared in the embodiment 1 is added into the formula A, so that the water-soluble oil dispersing agent can disperse pigments, and the eighteen-carbon long-chain structure of the water-soluble oil dispersing agent also reduces the film forming temperature of the acrylic emulsion, so that the paint of the formula A can still well form a film even in the absence of a film forming aid (dodecyl alcohol ester), and further the volatilization pollution of a solvent is reduced.
In addition, the cost of the water-soluble oil dispersant prepared in example 1 is 15 yuan/kg, while the cost of the common dispersant on the market is 150 yuan/kg, according to the formula in table 1, the cost of the water-soluble oil dispersant used per kg of paint in formula a is 20 × 3 ÷ 100 ═ 3 yuan, and the cost of the common dispersant used per kg of paint in formula a is 5 × 150 ÷ 100 ═ 7.5 yuan, which is equivalent to saving 4.5 yuan in formula a compared with the light dispersant of formula B per kg of paint, and not including the cost of the film-forming aid dodecanol ester which is excessive in formula B, the cost of the water-soluble oil dispersant prepared by the invention is greatly saved.
After the paint preparation is finished, spraying is carried out, various performances of the paint film are tested after 1-week curing in a well-ventilated environment at 25 ℃, and the test results are shown in the following table:
TABLE 2 paint film property test results obtained for formulations A and B
As can be seen from the data in the table above, the paint film obtained with formulation A has the following advantages compared with the paint film obtained with formulation B:
(1) the initial water resistance is good: compared with the formula B, the water resistance of the paint film prepared by the formula A after being dried for 1 day is obviously improved, which shows that the initial water resistance of the paint film prepared by the formula A is good, because the formula A contains a large amount of grease under the participation of the water-soluble oil dispersant, the water repellency is improved, and the initial water resistance of the paint film is improved;
(2) the glossiness is high: compared with the formula B, the glossiness of the paint film prepared by the formula A is obviously improved after the paint film is dried for 7 days by air and is multiplied by 1 hour at 80 ℃, which shows that the glossiness of the paint film prepared by the formula A is higher;
(3) good salt spray resistance: compared with the formula B, the salt spray resistance of the paint film prepared by the formula A is remarkably improved, the salt spray resistance time after the paint film is dried for 7 days is 3.33 times that of the formula B, and the salt spray resistance time after 80 multiplied by 1h is 3.24 times that of the formula B, so that the salt spray resistance of the paint film prepared by the formula A is remarkably improved, the application range of the paint film is wider, and the practicability is stronger when a plurality of moderate anticorrosion and metal protection systems are applied.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A water-soluble oil dispersant is characterized by comprising a component A, a component B, a component C and a component D, which are calculated by weight parts,
the component A comprises 650 parts of vegetable oil 500-650 parts, 15-20 parts of acid anhydride,
the component B comprises 15-25 parts of polyol,
the component C comprises 145 portions of polyether polyol 100, 0.08 to 0.11 portion of catalyst,
the component D comprises 600 portions and 900 portions of deionized water.
2. The water-soluble oil dispersion of claim 1, wherein the catalyst is dibutyltin dilaurate or dibutyltin oxide.
3. The water-soluble oil dispersion according to claim 1, wherein the vegetable oil is one or more of peanut oil, castor oil, dehydrated castor oil, linseed oil, soybean oil, tall oil, and the acid anhydride is one of succinic anhydride, maleic anhydride, and fumaric anhydride.
4. A water-soluble oil dispersion according to claim 1 wherein the polyol is one or more of pentaerythritol, dipentaerythritol, trimethylolpropane, glycerol, sorbitol, neopentyl glycol.
5. The water-soluble oil dispersion according to claim 1, wherein the polyether polyol is one or more selected from the group consisting of PEG200, PEG300, PEG400, PEG600, PEG800, PEG1000, PEG1500, PEG2000, PEG3000, PPG4000, PEG6000, PEG8000, fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ether, glycerol polyoxyethylene ether, and nonylphenol polyoxyethylene ether.
6. A method for preparing a water-soluble oil dispersion, comprising the steps of:
s1, preparing the formula of the water-soluble oil dispersant according to any one of claims 1 to 5;
s2, adding the component A, introducing nitrogen for protection, heating to 230 ℃, and then preserving heat for 2 hours;
s3, cooling to 180 ℃, adding the component B, heating to 220 ℃, and cooling to 190 ℃ when the acid value is 5-18 mgKOH/g;
s4, adding the component C, heating to 210 ℃, preserving heat for 3 hours, and cooling to 70 ℃;
and S5, adding the component D, and dispersing uniformly to obtain the water-soluble oil dispersing agent.
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