CN100526361C - Anticorrosive bottom lacquer of water-soluble alcohol acid, and preparation method - Google Patents
Anticorrosive bottom lacquer of water-soluble alcohol acid, and preparation method Download PDFInfo
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- CN100526361C CN100526361C CNB2007100222859A CN200710022285A CN100526361C CN 100526361 C CN100526361 C CN 100526361C CN B2007100222859 A CNB2007100222859 A CN B2007100222859A CN 200710022285 A CN200710022285 A CN 200710022285A CN 100526361 C CN100526361 C CN 100526361C
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- alkyd resin
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Abstract
This invention discloses formula and method for preparing high-performance water-soluble alkyd antirust primer. The method comprises: synthesizing water-soluble alkyd resin solution, mixing with antirust pigment, filler, water, drier and additives, dispersing, and grinding. The primer utilizes water as the diluting agent, and is noncombustible, thus is safe for the operators. The volatile organic compound (VOC) content is very low, and can meet the state standards of China. Besides, the primer also has such advantages as safe and convenient usage, high mechanical strength, high corrosion, acid, alkali, salt, oil, weathering and water resistance, and good antirust effect, and can be used as primer for transportation means, bridges, storage tanks, pipes and mechanical equipment.
Description
Technical field
The present invention relates to a kind of anticorrosive bottom lacquer of water-soluble alcohol acid and preparation method thereof, belong to technical field of coatings.
Background technology
Water soluble paint, high solid coating, powder coating are the developing direction of coatings industry.And alkyd varnish is owing to have good weather resistance, gloss, guarantor's light tint retention, hardness, a snappiness, and fabulous brushing property makes it occupy very consequence and share greatly in solvent based coating.But day by day strict along with the big bulge in price of petroleum products in the global range and various countries' environmental regulation, coating material production producer and coating user particularly pay attention to the raw materials cost of coating and organic volatile (VOC) content of finished product coating.And water soluble alkyd resin lacquer is a solvent with water, and it saves a large amount of organic solvents, promptly economize on resources and alleviate environmental pollution, secure and non-combustible, and be a kind of environmentally friendly coating with wide market development prospect.
The high acid value low-viscosity resin that water soluble alkyd resin system is formed through esterification, polycondensation by polyvalent alcohol, polyprotonic acid and vegetables oil (acid) or other lipid acid.This resin with in the amine and after the water soluble paint that makes have characteristics such as fast drying, strong adhesion, hardness height, excellent impact resistance and VOC quantity discharged are extremely low.But since the ester bond of water soluble alkyd resin molecular chain under weak basic condition than facile hydrolysis, the coating package stability is descended, and defective such as paint film poor water resistance, limit it and use widely.
Summary of the invention
Purpose of the present invention then is above-mentioned the deficiencies in the prior art part, and a kind of anticorrosive bottom lacquer of water-soluble alcohol acid and preparation method thereof is provided, and comprises the prescription and the synthesis technique of water soluble alkyd resin wherein.The present invention makes full use of the degraded that intermolecular neighboring group effect and steric effect stop resin, synthesising stability good water-solubility Synolac, through meticulously preparation, make again that a kind of water-fast dissolubility is strong, period of storage long, rustless property is strong, the anticorrosive bottom lacquer of water-soluble alcohol acid of good mechanical property.
Technical scheme of the present invention is:
A kind of anticorrosive bottom lacquer of water-soluble alcohol acid is characterized in that the composition of this priming paint comprises:
| Component | Weight (%) |
| Water soluble alkyd resin solution | 35-55 |
| Rust-stabilising pigment | 10-30 |
| Filler | 20-50 |
| Auxiliary agent | 1-5 |
| Siccative | 0.1-1 |
| Water | 5-10 |
Described water is deionized water or distilled water, and the content that requires water-soluble substances wherein is less than 100ppm.
Siccative in the said components is the mixture of cobalt alkyl salt, manganese alkyl salt, calcium naphthenate.Filler is selected from barium sulfate, talcum powder, sericite, chooses wherein one or more.
Rust-stabilising pigment in the said components is selected from red iron oxide, zinc phosphate, red lead, zinc-chrome yellow, chooses wherein one or more.
Described auxiliary agent is the lubrication dispersing agent of rust-stabilising pigment and filler, 6208 of the special company of preferred cyanogen.
The present invention is for achieving the above object, and water soluble alkyd resin solution wherein can be synthetic by following prescription:
| Component | Weight (%) |
| Linolenic acid | 20-30 |
| Phthalic anhydride | 7-11 |
| Tetramethylolmethane | 10-15 |
| Trimellitic acid 1,2-anhydride | 3-5 |
| Water | 30-40 |
| Solubility promoter | 4-8 |
| Neutralizing agent | 6-10 |
Solubility promoter in the said components is chosen one or more in ethylene glycol monobutyl ether, propylene glycol monobutyl ether, the butanols.
Above-mentioned neutralizing agent is to be selected from N-ethylmorpholine, N, one or more in N dimethylethanolamine, triethylamine, the ammoniacal liquor.
To achieve the object of the present invention, the preparation method that water soluble alkyd resin solution is taked among the present invention is as follows:
1. drop into linolenic acid, tetramethylolmethane and the phthalic anhydride of prescription metering in reactor, start stirring, add the dimethylbenzene temperature rising reflux, be warmed up to 200-230 ℃ and carry out esterification, dropping to 20-30mgKOH/g to acid number is the first step esterification terminal point.
2. be cooled to 140-160 ℃, add trimellitic acid 1,2-anhydride, be warmed up to 170-200 ℃ more gradually and carry out esterification, dropping to 50-60mgKOH/g to acid number is reaction end.
3. vacuum filtration is removed solvent xylene, is cooled to 50-60 ℃, adds solubility promoter, the neutralizing agent of formula ratio, adjusts pH=7-8, adds water-dispersion 3-5 minute again, and both getting solid part is the water soluble alkyd resin solution of 40-60%.
The preparation method of anticorrosive bottom lacquer of water-soluble alcohol acid who with above-mentioned water soluble alkyd resin is base-material is as follows:
1. in joining the slurry container, add water, auxiliary agent, the portion water dissolubility alkyd resin solution of accurately metering, stir with the adjustable high-speed dispersion machine.
2. add pigment, filler in the above-mentioned prescription, stir.
3. the slurry that step 2 is stirred is transferred in the grinding plant, and being ground to fineness is the 30-60 micron, gets mill base.
4. in joining the lacquer container, add above-mentioned mill base, add remainder water dissolubility alkyd resin solution, stir.
5. add the siccative of above-mentioned formula ratio, stir.
6. filter, packing gets the finished product anticorrosive bottom lacquer of water-soluble alcohol acid.
Because water soluble alkyd resin is wetting good inadequately to rust-stabilising pigment and filler, so adding a certain amount of wetting dispersing agent is auxiliary agent, improve rust-stabilising pigment and the filler dispersiveness in water soluble alkyd resin, so that further increase the package stability of this rust-proofing primer.The present invention has improved the synthesis technique of water soluble alkyd resin, and the acid value of control reaction end Synolac makes Synolac have good aqueous solubility not influence the water tolerance of paint film simultaneously again.Select for use filler to improve the water tolerance of rust-proofing primer.
Compare with traditional solvent bottom paint, the anticorrosive bottom lacquer of water-soluble alcohol acid that the present invention relates to has following advantage:
1. paint film physical strength height, erosion resistance is strong, but acid-and base-resisting, salt, wet goods corrosive medium, weathering resistance, water-tolerant.
2. these priming paint raw material sources are wide, and cost is low, is convenient to large-scale promotion application.
3. safe and convenient to use, this priming paint is dispersion medium with water, has improved construction environment, has avoided disaster hidden-trouble.The every index of this priming paint has met or exceeded solvent-borne type alcohol acid primer level, can replace the solvent-borne type alcohol acid primer fully, and verified this priming paint has excellent adaptability on steel such as the vehicles, bridge, basin, pipeline, mechanical means are decorated and protected.
Embodiment
Below in conjunction with specific embodiment the present invention is further described:
The present invention utilizes the water soluble alkyd resin solution of gained to make base-material to cooperate with rust-stabilising pigment, filler, auxiliary agent, water, siccative and make anticorrosive bottom lacquer of water-soluble alcohol acid, described water soluble alkyd resin solution is to be carboxyl with the hydrophilic radical of introducing in the Synolac molecular chain, by in the amine and after be dispersed in and form in the water.Solubility promoter is chosen one or more in ethylene glycol monobutyl ether, propylene glycol monobutyl ether, the butanols, and their mass percent is any proportioning.Described neutralizing agent is selected from N-ethylmorpholine, N, one or more in N dimethylethanolamine, triethylamine, the ammoniacal liquor, and their mass percent also is any proportioning, and wherein the mass percent of ammoniacal liquor is 20-30%, and preferred mass per-cent is 25% ammoniacal liquor.Described water is deionized water or distilled water, and the content that requires water-soluble substances wherein is less than 100ppm.Described siccative is the mixture of cobalt naphthenate, manganese naphthenate, calcium naphthenate, and its each constituent mass per-cent also is any.Filler is selected from barium sulfate, talcum powder, sericite, chooses wherein one or more, can adopt wherein a kind ofly, also can adopt multiple combination, and when adopting multiple being used in combination, the mass percent of its each component also is any.Rust-stabilising pigment is selected from red iron oxide, zinc phosphate, red lead, zinc-chrome yellow, chooses wherein one or more, and the mass percent between them also is any.Auxiliary agent adopts 6208 of the special company of cyanogen.
Water soluble alkyd resin solution adopts among the present invention recipe ingredient and mass percent thereof are:
The preparation method that the present invention adopts is as follows:
Preparation embodiment 1:
1. drop into linolenic acid, tetramethylolmethane and the phthalic anhydride of prescription metering in reactor, start stirring, add the dimethylbenzene temperature rising reflux, be warmed up to 210 ℃ and carry out esterification, dropping to 20mgKOH/g to acid number is the first step esterification terminal point.
2. be cooled to 140 ℃, add trimellitic acid 1,2-anhydride, be warmed up to 180 ℃ more gradually and carry out esterification, dropping to 50mgKOH/g to acid number is reaction end.
3. vacuum filtration is removed solvent xylene, is cooled to 60 ℃, adds solubility promoter, the neutralizing agent of formula ratio, adjusts pH=7-8, added again water-dispersion 3-5 minute, both solid part is 50% water soluble alkyd resin solution.
Preparation embodiment 2:
1. drop into linolenic acid, tetramethylolmethane and the phthalic anhydride of prescription metering in reactor, start stirring, add the dimethylbenzene temperature rising reflux, be warmed up to 200 ℃ and carry out esterification, dropping to 30mgKOH/g to acid number is the first step esterification terminal point.
2. be cooled to 150 ℃, add trimellitic acid 1,2-anhydride, be warmed up to 170 ℃ more gradually and carry out esterification, dropping to 55mgKOH/g to acid number is reaction end.
3. vacuum filtration is removed solvent xylene, is cooled to 50 ℃, adds solubility promoter, the neutralizing agent of formula ratio, adjusts pH=7-8, added again water-dispersion 3-5 minute, both solid part is 40% water soluble alkyd resin solution.
Preparation embodiment 3:
1. drop into linolenic acid, tetramethylolmethane and the phthalic anhydride of prescription metering in reactor, start stirring, add the dimethylbenzene temperature rising reflux, be warmed up to 230 ℃ and carry out esterification, dropping to 25mgKOH/g to acid number is the first step esterification terminal point.
2. be cooled to 150 ℃, add trimellitic acid 1,2-anhydride, be warmed up to 200 ℃ more gradually and carry out esterification, dropping to 60mgKOH/g to acid number is reaction end.
3. vacuum filtration is removed solvent xylene, is cooled to 60 ℃, adds solubility promoter, the neutralizing agent of formula ratio, adjusts pH=7-8, adds water-dispersion 3-5 minute again, and both getting solid part is 60% water soluble alkyd resin solution.
Its concrete component is:
Table 1:
Table 2:
Above-mentioned is that the preparation method of the anticorrosive bottom lacquer of water-soluble alcohol acid of base-material is with the water soluble alkyd resin:
1. in joining the slurry container, add water, auxiliary agent, the portion water dissolubility alkyd resin solution of accurately metering, stir with the adjustable high-speed dispersion machine.
2. add pigment, filler in the above-mentioned prescription, stir.
3. the slurry that previous step is stirred is transferred in the grinding plant, and being ground to fineness is 40 microns, gets mill base.
4. in joining the lacquer container, add above-mentioned mill base, add remainder water dissolubility alkyd resin solution, stir.
5. add the siccative of above-mentioned formula ratio, stir.
6. filter, packing gets the finished product anticorrosive bottom lacquer of water-soluble alcohol acid.
Claims (7)
1, a kind of water soluble alkyd resin solution is characterized in that the weight of this water soluble alkyd resin solution consists of: linolenic acid 20-30%, phthalic anhydride 7-11%, tetramethylolmethane 10-15%, trimellitic acid 1,2-anhydride 3-5%, water 30-40%, solubility promoter 4-8%, neutralizing agent 6-10%;
And prepare by following method:
(1) linolenic acid, tetramethylolmethane and the phthalic anhydride of the above-mentioned composition by weight of input in reactor start stirring, add the dimethylbenzene temperature rising reflux, are warmed up to 200-230 ℃ and carry out esterification, and dropping to 20-30mgKOH/g to acid number is the first step esterification terminal point;
(2) be cooled to 140-150 ℃, add trimellitic acid 1,2-anhydride, be warmed up to 170-200 ℃ more gradually and carry out esterification, dropping to 50-60mgKOH/g to acid number is reaction end;
(3) vacuum filtration is removed solvent xylene, is cooled to 50-60 ℃, adds solubility promoter, the neutralizing agent of above-mentioned composition by weight, adjusts pH=7-8, adds water-dispersion 3-5 minute again, and both getting solid part is the water soluble alkyd resin solution of 40-60%.
2, water soluble alkyd resin solution according to claim 1 is characterized in that described solubility promoter is to be selected from ethylene glycol monobutyl ether, propylene glycol monobutyl ether, the butanols one or more.
3, water soluble alkyd resin solution according to claim 1 is characterized in that described neutralizing agent is to be selected from N-ethylmorpholine, N, one or more in N-dimethylethanolamine, triethylamine, the ammoniacal liquor.
4, a kind of method for preparing water soluble alkyd resin solution in the claim 1 is characterized in that may further comprise the steps:
(1) linolenic acid, tetramethylolmethane and the phthalic anhydride of the above-mentioned composition by weight of input in reactor start stirring, add the dimethylbenzene temperature rising reflux, are warmed up to 200-230 ℃ and carry out esterification, and dropping to 20-30mgKOH/g to acid number is the first step esterification terminal point;
(2) be cooled to 140-150 ℃, add trimellitic acid 1,2-anhydride, be warmed up to 170-200 ℃ more gradually and carry out esterification, dropping to 50-60mgKOH/g to acid number is reaction end;
(3) vacuum filtration is removed solvent xylene, is cooled to 50-60 ℃, adds solubility promoter, the neutralizing agent of above-mentioned composition by weight, adjusts pH=7-8, adds water-dispersion 3-5 minute again, and both getting solid part is the water soluble alkyd resin solution of 40-60%.
5, a kind of anticorrosive bottom lacquer of water-soluble alcohol acid of making as base-material with the water soluble alkyd resin solution in the claim 1 is characterized in that the weight composition of this priming paint comprises:
Water soluble alkyd resin solution 35-55%, rust-stabilising pigment 10-30%, filler 20-50%, auxiliary agent 1-5%, siccative 0.1-1%, water 5-10%, the weight % sum of described each component is 100%;
Described auxiliary agent is the wetting dispersing agent of rust-stabilising pigment and filler, and described filler is selected one or more in barium sulfate, talcum powder, the sericite for use, and described rust-stabilising pigment is selected from one or more in red iron oxide, zinc phosphate, red lead, the zinc-chrome yellow;
And described priming paint prepares by following method:
(1) in joining the slurry container, adds water, auxiliary agent, the portion water dissolubility alkyd resin solution that accurately measures, stir with the adjustable high-speed dispersion machine;
(2) pigment, the filler of the above-mentioned composition by weight of adding stir;
(3) slurry that (2) step was stirred is transferred in the grinding plant, and being ground to fineness is the 30-60 micron, gets mill base;
(4) in joining the lacquer container, add above-mentioned mill base, add remainder water dissolubility alkyd resin solution, stir;
(5) siccative of the above-mentioned composition by weight of adding stirs;
(6) filter, packing gets the finished product anticorrosive bottom lacquer of water-soluble alcohol acid.
6, anticorrosive bottom lacquer of water-soluble alcohol acid according to claim 5 is characterized in that described siccative is the mixture of cobalt alkyl salt, manganese alkyl salt, calcium naphthenate.
7, a kind of method for preparing anticorrosive bottom lacquer of water-soluble alcohol acid described in the claim 5 is characterized in that may further comprise the steps:
(1) in joining the slurry container, adds water, auxiliary agent, the portion water dissolubility alkyd resin solution that accurately measures, stir with the adjustable high-speed dispersion machine;
(2) pigment, the filler of the above-mentioned composition by weight of adding stir;
(3) slurry that (2) step was stirred is transferred in the grinding plant, and being ground to fineness is the 30-60 micron, gets mill base;
(4) in joining the lacquer container, add above-mentioned mill base, add remainder water dissolubility alkyd resin solution, stir;
(5) siccative of the above-mentioned composition by weight of adding stirs;
(6) filter, packing gets the finished product anticorrosive bottom lacquer of water-soluble alcohol acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100222859A CN100526361C (en) | 2007-05-14 | 2007-05-14 | Anticorrosive bottom lacquer of water-soluble alcohol acid, and preparation method |
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| CNB2007100222859A CN100526361C (en) | 2007-05-14 | 2007-05-14 | Anticorrosive bottom lacquer of water-soluble alcohol acid, and preparation method |
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| CN100526361C true CN100526361C (en) | 2009-08-12 |
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| CN109054602A (en) * | 2018-06-05 | 2018-12-21 | 河北晨阳工贸集团有限公司 | A kind of epoxy modified water-based alkyd resin and the aqueous steel construction paint comprising the resin and preparation method thereof |
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| CN117165156B (en) * | 2023-08-29 | 2024-03-12 | 湖北彩龙涂料科技有限公司 | Quick-drying alkyd paint and preparation method thereof |
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