CN108084422B - Structural antibacterial water-based alkyd resin and preparation method thereof - Google Patents
Structural antibacterial water-based alkyd resin and preparation method thereof Download PDFInfo
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- 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
- C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
- C08G63/685—Polyesters containing atoms other than carbon, hydrogen and oxygen containing nitrogen
- C08G63/6854—Polyesters containing atoms other than carbon, hydrogen and oxygen containing nitrogen derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/6856—Dicarboxylic acids and dihydroxy compounds
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- 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
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- 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
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/914—Polymers modified by chemical after-treatment derived from polycarboxylic acids and polyhydroxy compounds
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- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
Abstract
The invention relates to a structural antibacterial waterborne alkyd resin and a preparation method thereof, wherein the main components of the structural antibacterial waterborne alkyd resin comprise dry vegetable oil, organic acid anhydride, isopropanolamine Schiff base, polyol, benzoic acid, dimethylolpropionic acid, dimethylbenzene, a neutralizer and deionized water; the isopropanolamine Schiff base is prepared by reacting isopropanolamine with aldehyde; the structural antibacterial waterborne alkyd resin prepared by the invention has the properties of good adhesive force, fullness, high hardness, high gloss, corrosion resistance and the like; when the antibacterial paint is used as an antibacterial paint, no additional antibacterial agent is needed, the lasting antibacterial and bacteriostatic effects can be achieved, and the antibacterial paint can be used for internal and external wall paints, water-based industrial paints, water-based wood paints and the like.
Description
Technical Field
The invention relates to a preparation method of modified alkyd resin, in particular to structural antibacterial water-based alkyd resin and a preparation method thereof, and belongs to the technical field of synthetic resin.
Background
Since the distribution of microorganisms in the environment is very wide, the survival and health of human beings are threatened by various bacteria and viruses all the time, according to the investigation that the health care committee of the disease control center in the United states carries out bacteria detection on 30 places of 35 families and calculates the number of bacteria, 6267 bacteria are arranged on a handle of a bathroom faucet, 12 ten thousand bacteria are arranged in a fish tank, 56 ten thousand bacteria are arranged on a water pipe of a kitchen, and 320 ten thousand bacteria are arranged on a closestool.
Along with the development of society and the improvement of living standard of people, self health, living quality and living environment are highly valued by people. People usually select the paint with the antibacterial effect in the decoration process, and the existing paint, especially the wall paint, often has mildew on the wall surface after use; in addition, the coating can emit unpleasant odor and has long lasting odor, and the use of the coating brings lasting harm to the human body, so that the antibacterial coating with good environment-friendly antibacterial effect is necessary.
At present, many antibacterial coatings are additive antibacterial coatings, and antibacterial agents with antibacterial functions are added to prepare the coatings with the antibacterial functions through certain process processing; the structural antibacterial coating is prepared by connecting antibacterial groups on a polymer molecular chain in a chemical bond mode and taking the high molecular polymer as a base material, although the development of the structural antibacterial coating is still in the initial stage, compared with the additive antibacterial coating, the structural antibacterial coating has the advantages of lasting and stable antibacterial property and the like, so that the development of novel structural antibacterial resin has important economic value and wide market space.
The alkyd resin is a synthetic resin which is widely applied in paint, is synthesized by polyol, polybasic acid and fatty acid through esterification polycondensation reaction, is one of the most widely applied synthetic resins in China at present, has the advantages of low price, simple construction and rich raw material sources, is suitable for surface coating of all wood and metal, ensures that a final coating film is full and bright due to the structural characteristics of the alkyd resin, has the characteristic of crosslinking with oxygen, is universal in self-drying and can be widely applied, but the common alkyd resin has no antibacterial and bactericidal effects.
Chinese patent CN103881075A discloses a chemically modified alkyd resin, and provides a modified alkyd resin with simple process, low cost and excellent weather resistance. Firstly, phthalic anhydride, benzoic acid, pentaerythritol, trimethylolpropane, soybean fatty acid and xylene are reacted for 4-7 hours at the temperature of 100-150 ℃ in a reaction kettle, and then water in the mixture is removed; then adding an organic solvent into the mixture after the moisture is removed, uniformly stirring, adding ethyl orthosilicate at the temperature of 60-110 ℃, and reacting for 6-8 hours at the temperature to obtain a product, wherein the modified alkyd resin prepared by the process has the advantages of high drying speed, high hardness, good water resistance, good outdoor weather resistance and strong acid resistance; but has long production time and no antibacterial property.
Disclosure of Invention
The Schiff base compound has certain bioactivity, firstly, the Schiff base compound has good bacteriostatic, bactericidal and antifungal effects, for example, the Schiff base compound has good bactericidal activity on staphylococcus aureus, bacillus subtilis, escherichia coli, gram-negative bacteria and the like, and also has good inhibitory effect on cryptococcus neoformans and candida albicans, the Schiff base has unique bioactivity different from other structures besides the application significance of general compounds, and the Schiff base can be modified in a targeted manner due to the characteristics of diversity, selectivity and the like of functional group structures connected on carbonyl and amino substituent groups.
Therefore, the technical problem to be solved by the invention is to overcome the defects of poor durability, easy elution, easy degradation and the like of the antibacterial effect of a physically-added antibacterial agent.
In addition, the Schiff base contains C ═ N double bonds and has unique corrosion inhibition performance, particularly aromatic Schiff bases, and the benzene ring structure of the Schiff base is easy to form conjugated bonds with the C ═ N double bonds, has strong coordination capacity with metal ions and is easy to form stable complexes with the metal ions, so that a compact protective film is formed on the surface of the metal, and the corrosion of the metal is prevented.
According to the invention, the mono-alcohol amine Schiff base is added in the late process of synthesizing the alkyd resin, so that the Schiff base structure is connected to the end chain of the resin molecule, and after the resin is formed into a film, the Schiff base structure is positioned on the surface of the film, and the antibacterial, bacteriostatic activity and anti-corrosion functions of the resin are fully exerted.
The invention aims to provide a structural antibacterial water-based alkyd resin with a corrosion inhibition prevention function, an environment-friendly and lasting antibacterial effect and a preparation method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme: the invention relates to a structural antibacterial water-based alkyd resin which comprises the following components in percentage by weight: 6.0-10.0% of dry vegetable oil, 6.0-16.0% of organic acid anhydride, 2.0-3.5% of isopropanolamine Schiff base, 5.0-13.0% of polyol, 1.0-2.5% of benzoic acid, 1.5-3.0% of dimethylolpropionic acid, 8.0-12.0% of xylene, 1.0-3.0% of neutralizing agent and 45.0-65.0% of deionized water.
Wherein the dry vegetable oil is one or more of linseed oil, tung oil, catalpa oil, dehydrated castor oil and cottonseed oil.
The organic acid anhydride is one or a combination of more of phthalic anhydride, acetic anhydride, maleic anhydride, terephthalic acid, isophthalic acid, adipic acid and sebacic acid.
The isopropanolamine Schiff base is prepared by reacting isopropanolamine and aldehyde, and the synthesis reaction formula is as follows:
the isopropanol amine Schiff base comprises the following components in percentage by weight: 20.0-35.0% of isopropanolamine, 12.0-45.0% of aldehyde, 40.0-60.0% of ethanol and 0.5-1.0% of glacial acetic acid.
The aldehyde is any one of formaldehyde, benzaldehyde, cinnamaldehyde and furfural.
The preparation method of the isopropanol amine Schiff base comprises the following steps:
adding R-CHO and ethanol into a reaction kettle provided with a thermometer, a stirrer, a dropping tank and a reflux condenser, heating to 80 ℃, and uniformly stirring; in addition, weighing isopropanolamine and ethanol according to the formula ratio, adding into a dropwise adding tank, slowly dropwise adding into a reaction kettle after uniform dissolution, adding a proper amount of glacial acetic acid after dropwise adding, continuously performing reflux reaction for 4-5 h, cooling to room temperature after complete reaction, standing overnight, and performing suction filtration to obtain a crude product; recrystallizing the crude product by using ethanol, and drying in vacuum to obtain the isopropanolamine Schiff base.
The polyhydric alcohol is one or a combination of more of ethylene glycol, propylene glycol, butanediol, hexanediol, neopentyl glycol, diethylene glycol, dipropylene glycol, trimethylolpropane, glycerol, pentaerythritol and trimethylolethane.
The neutralizing agent is at least one of triethylamine, ammonia water and dimethylethanolamine.
The invention provides a preparation method of structural antibacterial water-based alkyd resin, which comprises the following steps:
a) sequentially adding dry vegetable oil, organic acid anhydride, polyalcohol, dimethylolpropionic acid and dimethylbenzene into a reactor provided with a thermometer, a condenser, a water separator and a stirrer according to the weight ratio of the formula, and introducing N under low-speed stirring2To remove O in the reaction kettle2；
b) Heating to 105 ℃ until reflux, keeping the temperature for 0.5h, removing part of water, continuously heating to 140-160 ℃, stirring and keeping the temperature for 1h at the rotating speed of 500-600 r/min after the materials are dissolved, then heating to 180 ℃, adding benzoic acid, keeping the temperature for reaction for 1-1.5 h, heating to 210-220 ℃ at the speed of 20 ℃/h, keeping the temperature for reaction for 2-3 h, and separating out the water generated by the reaction by using a water separator;
c) cooling to 160 ℃, adding isopropanolamine Schiff base, rapidly heating to 220-230 ℃, carrying out heat preservation reaction for 2-3 h, measuring the acid value every 15-30 min, cooling to 160 ℃ when the acid value reaches a theoretical design value, starting vacuum evaporation to remove solvent xylene, cooling to 50 ℃, adding a neutralizing agent, stirring and dispersing for 15-20 min, adding deionized water according to the formula amount, continuously stirring for 0.5h, and filtering to obtain the structural antibacterial waterborne alkyd resin.
The structural antibacterial waterborne alkyd resin prepared by the invention has the properties of good adhesive force, fullness, high hardness, high gloss, corrosion resistance and the like; when the antibacterial paint is used as an antibacterial paint, no additional antibacterial agent is needed, the lasting antibacterial and bacteriostatic effects can be achieved, and the antibacterial paint can be used for internal and external wall paints, water-based industrial paints, water-based wood paints and the like.
Detailed Description
The preparation of the structured antimicrobial waterborne alkyd resin is further described in conjunction with the following examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention.
Example 1
An isopropanolamine Schiff base A is prepared by the following steps:
adding 28.0 parts of benzaldehyde and 15.0 parts of ethanol into a reaction kettle provided with a thermometer, a stirrer, a dropping tank and a reflux condenser, heating to 80 ℃, and uniformly stirring; weighing 19.8 parts of isopropanolamine and 10.0 parts of ethanol, adding the materials into a dropwise adding tank, slowly dropwise adding the materials into a reaction kettle after uniform dissolution, adding 0.6 part of glacial acetic acid after dropwise adding, continuously stirring and carrying out reflux reaction for 4-5 h, cooling to room temperature after complete reaction, standing overnight, and carrying out suction filtration to obtain a crude product; and recrystallizing the crude product by using 26.6 parts of ethanol, and drying in vacuum to obtain the isopropanolamine Schiff base A.
Example 2
An isopropanolamine Schiff base B is prepared by the following steps:
adding 35.0 parts of cinnamyl aldehyde and 16.0 parts of ethanol into a reaction kettle provided with a thermometer, a stirrer, a dripping tank and a reflux condenser, heating to 80 ℃, and uniformly stirring; weighing 19.9 parts of isopropanolamine and 8.0 parts of ethanol, adding the weighed materials into a dropwise adding tank, slowly dropwise adding the materials into a reaction kettle after uniform dissolution, adding 0.6 part of glacial acetic acid after dropwise adding is finished, continuously stirring and refluxing for reaction for 4-5 hours, cooling to room temperature after complete reaction, standing overnight, and performing suction filtration to obtain a crude product; and recrystallizing the crude product by using 20.5 parts of ethanol, and drying in vacuum to obtain the isopropanolamine Schiff base B.
Example 3
An isopropanolamine Schiff base C is prepared by the following steps:
adding 30.0 parts of furfural and 13.0 parts of ethanol into a reaction kettle provided with a thermometer, a stirrer, a dropping tank and a reflux condenser, heating to 80 ℃, and uniformly stirring; weighing 23.4 parts of isopropanolamine and 10.0 parts of ethanol, adding into a dropwise adding tank, slowly dropwise adding into a reaction kettle after uniform dissolution, adding 0.6 part of glacial acetic acid after dropwise adding, continuously stirring and refluxing for reaction for 4-5 h, cooling to room temperature after complete reaction, standing overnight, and performing suction filtration to obtain a crude product; and recrystallizing the crude product by using 30.0 parts of ethanol, and drying in vacuum to obtain the isopropanolamine Schiff base C.
Example 4
A structural antibacterial waterborne alkyd resin X is prepared by the following steps:
a) adding 8.0 parts of linseed oil, 7.6 parts of phthalic anhydride, 3.2 parts of isophthalic acid, 2.2 parts of neopentyl glycol, 6.4 parts of glycerol, 2.0 parts of dimethylolpropionic acid and 10.0 parts of dimethylbenzene in turn according to the weight part ratio of the formula into a reactor provided with a thermometer, a condenser pipe, a water separator and a stirrer, and introducing N under low-speed stirring2To remove O in the reaction kettle2；
b) Heating to 100 ℃, keeping the temperature for 0.5h, removing part of water, continuously heating to 140-160 ℃, stirring and keeping the temperature for 1h at the rotating speed of 500-600 r/min after the materials are dissolved, then heating to 180 ℃, adding 1.6 parts of benzoic acid, keeping the temperature for reaction for 1-1.5 h, heating to 210-220 ℃ at the speed of 20 ℃/h, keeping the temperature for reaction for 2-3 h, and separating the water generated by the reaction out by using a water separator;
c) cooling to 160 ℃, adding 2.8 parts of isopropanolamine Schiff base A, rapidly heating to 220-230 ℃, carrying out heat preservation reaction for 2-3 h, measuring the acid value every 15-30 min, cooling to 160 ℃ when the acid value reaches a theoretical design value, starting vacuum evaporation to remove solvent xylene, cooling to 50 ℃, adding 1.6 parts of neutralizing agent, stirring and dispersing for 15-20 min, adding 54.6 parts of deionized water, continuously stirring for 0.5h, and filtering to obtain the structural antibacterial waterborne alkyd resin X.
Example 5
A structural antibacterial water-based alkyd resin Y is prepared by the following steps:
a) sequentially adding 9.0 parts of catalpa oil, 8.2 parts of phthalic anhydride, 3.0 parts of isophthalic acid, 1.8 parts of propylene glycol, 9.6 parts of trimethylolpropane, 2.2 parts of dimethylolpropionic acid and 10.0 parts of dimethylbenzene into a reactor provided with a thermometer, a condenser pipe, a water separator and a stirrer according to the weight part ratio of the formula, and introducing N into the reactor under low-speed stirring2To remove O in the reaction kettle2；
b) Heating to 100 ℃, keeping the temperature for 0.5h, removing part of water, continuously heating to 140-160 ℃, stirring and keeping the temperature for 1h at the rotating speed of 500-600 r/min after the materials are dissolved, then heating to 180 ℃, adding 1.8 parts of benzoic acid, keeping the temperature for reaction for 1-1.5 h, heating to 210-220 ℃ at the speed of 20 ℃/h, keeping the temperature for reaction for 2-3 h, and separating the water generated by the reaction out by using a water separator;
c) cooling to 160 ℃, adding 2.6 parts of isopropanolamine Schiff base, rapidly heating to 220-230 ℃, carrying out heat preservation reaction for 2-3 h, measuring the acid value every 15-30 min, cooling to 160 ℃ when the acid value reaches a theoretical design value, starting vacuum evaporation to remove solvent xylene, cooling to 50 ℃, adding 1.8 parts of neutralizing agent, stirring and dispersing for 15-20 min, adding 50.0 parts of deionized water, continuously stirring for 0.5h, and filtering to obtain the structural antibacterial waterborne alkyd resin Y.
Example 6
A structural antibacterial water-based alkyd resin Z is prepared by the following steps:
a) adding 8.5 parts of tung oil, 6.2 parts of maleic anhydride, 2.6 parts of adipic acid, 8.2 parts of pentaerythritol, 2.6 parts of dimethylolpropionic acid and 9.0 parts of dimethylbenzene in turn according to the weight part ratio of the formula into a reactor provided with a thermometer, a condenser pipe, a water separator and a stirrer, and introducing N into the reactor under low-speed stirring2To remove O in the reaction kettle2；
b) Heating to 100 ℃, keeping the temperature for 0.5h, removing part of water, continuously heating to 140-160 ℃, stirring and keeping the temperature for 1h at the rotating speed of 500-600 r/min after the materials are dissolved, then heating to 180 ℃, adding 2.0 parts of benzoic acid, keeping the temperature for reaction for 1-1.5 h, heating to 210-220 ℃ at the speed of 20 ℃/h, keeping the temperature for reaction for 2-3 h, and separating the water generated by the reaction out by using a water separator;
c) cooling to 160 ℃, adding 2.8 parts of isopropanolamine Schiff base, rapidly heating to 220-230 ℃, carrying out heat preservation reaction for 2-3 h, measuring the acid value every 15-30 min, cooling to 160 ℃ when the acid value reaches a theoretical design value, starting vacuum evaporation to remove solvent xylene, cooling to 50 ℃, adding 2.3 parts of neutralizing agent, stirring and dispersing for 15-20 min, adding 55.8 parts of deionized water, continuously stirring for 0.5h, and filtering to obtain the structural antibacterial waterborne alkyd resin Z.
Although the present invention has been described in detail and with reference to exemplary embodiments thereof, it will be apparent to one skilled in the art that various changes, modifications and variations can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A preparation method of a structural antibacterial waterborne alkyd resin is characterized by comprising the following steps: the preparation method comprises the following steps:
1) preparing isopropanolamine Schiff base: adding aldehyde and ethanol into a reaction kettle provided with a thermometer, a stirrer, a dropping tank and a reflux condenser, heating to 80 ℃, and uniformly stirring; in addition, weighing isopropanolamine and ethanol according to the formula ratio, adding into a dropwise adding tank, slowly dropwise adding into a reaction kettle after uniform dissolution, adding a proper amount of glacial acetic acid after dropwise adding, continuously performing reflux reaction for 4-5 h, cooling to room temperature after complete reaction, standing overnight, and performing suction filtration to obtain a crude product; recrystallizing the crude product with ethanol, and drying in vacuum to obtain isopropanolamine Schiff base;
the raw materials comprise the following components in percentage by weight:
2) preparing the structural antibacterial water-based alkyd resin:
a) sequentially adding dry vegetable oil, organic acid or anhydride, polyol, dimethylolpropionic acid and xylene according to the weight ratio of the formula into a reactor provided with a thermometer, a condenser, a water separator and a stirrer, and introducing N under the condition of low-speed stirring2To remove O in the reaction kettle2；
b) Heating to 105 ℃ until reflux, keeping the temperature for 0.5h, removing part of water, continuously heating to 140-160 ℃, stirring and keeping the temperature for 1h at the rotating speed of 500-600 r/min after the materials are dissolved, then heating to 180 ℃, adding benzoic acid, keeping the temperature for reaction for 1-1.5 h, heating to 210-220 ℃ at the speed of 20 ℃/h, keeping the temperature for reaction for 2-3 h, and separating out the water generated by the reaction by using a water separator;
c) cooling to 160 ℃, adding isopropanolamine Schiff base, rapidly heating to 220-230 ℃, carrying out heat preservation reaction for 2-3 h, measuring the acid value every 15-30 min, cooling to 160 ℃ when the acid value reaches a theoretical design value, starting vacuum evaporation to remove solvent xylene, cooling to 50 ℃, adding a neutralizing agent, stirring and dispersing for 15-20 min, adding deionized water according to the formula amount, continuously stirring for 0.5h, and filtering to obtain the structural antibacterial waterborne alkyd resin;
the raw materials comprise the following components in percentage by weight:
6.0 to 10.0 percent of dry vegetable oil
6.0 to 16.0 percent of organic acid or anhydride
2.0-3.5% of isopropanolamine Schiff base
5.0 to 13.0 percent of polyhydric alcohol
1.0 to 2.5 percent of benzoic acid
1.5 to 3.0 percent of dimethylolpropionic acid
8.0-12.0% of dimethylbenzene
1.0-3.0% of neutralizer
45.0-65.0% of deionized water;
the isopropanolamine Schiff base is prepared by reacting isopropanolamine and aldehyde, and the synthesis reaction formula is as follows:
the aldehyde is any one of formaldehyde, benzaldehyde, cinnamaldehyde and furfural.
2. The method of claim 1, wherein: the dry vegetable oil is one or more of linseed oil, tung oil, catalpa oil, dehydrated castor oil and cottonseed oil.
3. The method of claim 1, wherein: the organic acid or anhydride is one or more of phthalic anhydride, acetic anhydride, maleic anhydride, phthalic acid, terephthalic acid, isophthalic acid, adipic acid and sebacic acid.
4. The method of claim 1, wherein: the polyhydric alcohol is one or a combination of more of ethylene glycol, propylene glycol, butanediol, hexanediol, neopentyl glycol, diethylene glycol, dipropylene glycol, trimethylolpropane, glycerol, pentaerythritol and trimethylolethane.
5. The method of claim 1, wherein: the neutralizing agent is at least one of triethylamine, ammonia water and dimethylethanolamine.
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| CN109554057A (en) * | 2018-10-31 | 2019-04-02 | 韶关市合众化工有限公司 | A kind of lasting anticorrosion water-soluble metal primer and preparation method thereof |
| CN110563936A (en) * | 2019-09-01 | 2019-12-13 | 合众（佛山）化工有限公司 | Self-flame-retardant antibacterial water-based polyester resin and preparation method thereof |
| CN110862521B (en) * | 2019-11-19 | 2021-09-28 | 合众（佛山）化工有限公司 | Self-antibacterial water-based alkyd resin for color correction and preparation method thereof |
| CN110862752B (en) * | 2019-11-19 | 2021-12-21 | 合众（佛山）化工有限公司 | Quick-drying water-oil universal modified water-based alkyd resin color modifier |
| CN110746590B (en) * | 2019-11-19 | 2021-12-17 | 合众（佛山）化工有限公司 | Polyether amine modified waterborne alkyd resin and preparation method thereof |
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