CN101307137A - Water dispersion of self-drying acrylic modified alkyd resin industrial topcoat using the water dispersion as base - Google Patents
Water dispersion of self-drying acrylic modified alkyd resin industrial topcoat using the water dispersion as base Download PDFInfo
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Abstract
The invention relates to 'core-shell' structure self-drying acrylic modified alkyd water dispersoid emulsion with acrylic modified alkyd as the 'core' and reactive nonmigratory surface active agent as the 'shell' and with a acid value between 5 and 20 mgKOH/g, a solid content between 40 and 60 weight percent and an emulsion grain diameter between 0.2 and 2 micrometers, and water dispersoid industrial finish paint with the acrylic modified alkyd water dispersoid emulsion as base material. The acrylic modified alkyd water dispersoid emulsion has good storage stability and hydrolysis resistance (the acid value of the acrylic modified alkyd water dispersoid emulsion is almost unchanged during the storage process). The acrylic modified alkyd water dispersoid finish paint with high glossiness and decorativeness can be made by taking the emulsion as the base material and matching with pigment and auxiliary agent. The construction performance, the self-drying property, the mechanical strength and the decorativeness of the acrylic modified alkyd water dispersoid finish paint can be compared with those of solvent alkyd finish paint.
Description
Technical field
The present invention relates to the coating industry in the chemical industry field, specifically, relate to a kind of basic raw material that water-borne coatings uses in making, promptly a kind of synthesizing formula of self-drying acrylic modified alkyd resin water dispersion emulsion, manufacture method and be the industrial topcoat of base-material with this emulsion.
Background technology
Synolac is to develop the earliest, one of synthetic resins of output maximum.Synolac does not rely on petroleum products basically, has unique price advantage; In addition, the component of Synolac and performance can in very large range be adjusted, and only rely on different polyvalent alcohols and polyprotonic acid just can obtain the different resin of performance.Just, the variation may command degree of branching of the ratio of functionality between alcohol and the acid, these characteristics make Synolac can be applied to more field undoubtedly.
Synolac demonstrates especially good film forming ability because its lower molecular weight, has very high glossiness thereby make finally to film, and owing to it is easy to construct and with the crosslinked characteristic of air and have versatility and be used widely.But their drying and set time are quite slow, and be all the more so especially at normal temperatures; Simultaneously low, water tolerance of its film forming hardness and weathering resistance are relatively poor.At this kind situation, be subjected to a lot of attention with acrylic acid modified Synolac.Acrylic resin has characteristics such as look shallow is, weather-proof, fast light, heat-resisting, good corrosion resistance, guarantor's look gloss retention is strong, paint film is plentiful.Adopt acrylic compounds that Synolac is carried out modification, can make Synolac have excellent guarantor's light tint retention, weathering resistance, weather resistance and erosion resistance and do soon, advantage such as high rigidity, thereby further widen the field that Synolac is used, cost rises and is little simultaneously.
In addition; enhancing along with national environmental consciousness; the laws and regulations of restriction VOC (volatile matter content) quantity discharged are strict day by day; and the anxiety of petroleum-based energy; the coating industry of China also develops towards environmental protectionization and intensification direction, as advocating and encouraging the highly filled coating of exploitation, water-borne coatings, powder coating and UV/EB coating material solidified etc.Owing to conspicuous reason, the acceptability of feasibility, cost and environment for example, water replaces the technology of organic solvent, and promptly the Water-borne modification technology of coating has special importance.For this reason, with the Synolac Water-borne modification and prepare feature of environmental protection aqueous industrial coating and be subjected to many-sided concern.
Though the Water-borne modification research of Synolac relatively early, its performance and using is slowly failed big breakthrough, and major cause is that its stable storing performance and anti-hydrolytic performance do not solve.At present, the Synolac Water-borne modification mainly contains following several approach:
1. make traditional Synolac contain excessive carboxyl, and with amine or ammonia with in it and salify, obtain water dilutable Synolac; 2. the Synolac for preparing self-emulsifying, a kind of method is the acrylic acid modified alkyd resin that preparation has " nuclear-shell " structure, with the nuclear of hydrophobic Synolac part as emulsion particle, hydrophilic acrylic copolymer part is as shell, hydrophobic nuclear is wrapped in the middle of the hydrophilic shell, all adopts this method as Chinese patent [application number: 98809755.9] and Chinese patent [application number: 00810902.8]; Another kind method is Synolac and the tensio-active agent reaction with reactive behavior, tensio-active agent is grafted to above the Synolac, make the Synolac can emulsification in water, it have overcome because of adding the hardness that a large amount of emulsifying agents cause and the decline of hydrophobic performance; 3. by the mode that adds emulsifying agent solvent-borne type Synolac Phase inversion emulsification is become the alkide resin emulsion dispersion.
Compare discovery by the approach to present Synolac Water-borne modification, water dilutable Synolac exists following three drawbacks: the first, there is a large amount of organic solvents; The second, employed triethylamine is limited to use at present in coating industry; The 3rd, because the vicinal effect of phthalic acid causes not hydrolysis of resin.The Synolac of self-emulsifying has following shortcoming: emulsifying power is low; Some resin will neutralize with amine neutralizing agents such as (or ammonia); The emulsion solid content that obtains is low etc.The mode that adds emulsifying agent also exists some shortcomings, for example, owing to used the emulsifying agent of more amount, has many drawbacks such as paint film poor water resistance, film-forming properties and ornamental difference.The alkide resin emulsion dispersion that how to reduce the emulsifying agent consumption and obtain stable storing is the current key point that solves of needing.
Summary of the invention
In order to overcome the shortcoming of existing water alcohol acid coating, the present invention aims to provide a kind of acrylic acid modified alkyd resin water dispersion emulsion, this emulsion is nuclear with the acrylic acid modified alkyd resin, with reactive non-migratory surfactants is shell, coating effect by means of reactive non-migratory surfactants, make acrylic acid modified alkyd resin water dispersion emulsion have goodish stability in storage and anti-hydrolytic performance (it is in storage process, and acid number is almost constant).With this emulsion is base-material, through cooperating with pigment, auxiliary agent, can be made into the acrylic acid modified alkyd resin water dispersion finish paint of high gloss, high-decoration, its workability, all can compare favourably with the solvent-borne type alkyde resin top-coat from dryness, paint film physical strength, decorate properties.Therefore, enforcement of the present invention not only has remarkable economic efficiency, and has the huge social benefit.
That is to say that technical solution of the present invention comprises acrylic acid modified alkyd resin water dispersion emulsion and preparation method thereof and is the preparation two big contents of the finish paint of base-material with this emulsion.When concrete enforcement is of the present invention, comprise following process: at first prepare acrylic polymer; Prepare siccative oil or semi-drying oil Synolac then, earlier carry out alcoholysis reaction with siccative oil or semi-drying oil and polyvalent alcohol, add acrylic polymer and monocarboxylic acid again and carry out esterification, reach predetermined acid number after, cooling, add di-carboxylic acid, continue the intensification esterification, reach acid number after, cooling, add solubility promoter and tensio-active agent, deionized water and thickening material and carry out Water-borne modification, promptly make acrylic acid modified alkyd resin water dispersion emulsion.Be that base-material is made self-drying acrylic modified alkyd water dispersion industrial topcoat with the acrylic acid modified alkyd resin water dispersion emulsion that obtains again.
According to the present invention, described acrylic acid modified alkyd resin water dispersion emulsion is a kind of self-drying acrylic modified alkyd resin water dispersion emulsion, has " nuclear-shell " structure, it is characterized in that, this emulsion is " nuclear " with acrylic acid modified alkyd resin, is " shell " with reactive non-migratory surfactants, and its acid number is 5～20mgKOH/g, solid part is 40～60 weight %, and emulsion particle diameter is 0.2～2 μ m.The synthesizing formula that this acrylic acid modified alkyd resin water dispersion emulsion is counted as weight percents comprises following component:
Siccative oil described in the prescription or semi-drying oil are selected from: one or more in Viscotrol C, oleum gossypii seminis, Chinese catalpa oil, Trisun Oil R 80, Thistle oil, oleum lini, inferior oil, synourin oil, soya-bean oil, tung oil, the Oleum Cocois; Described polyvalent alcohol is selected from: one or more in neopentyl glycol, glycerine, tetramethylolmethane, TriMethylolPropane(TMP), Diethylene Glycol, the ethylene glycol; Described monocarboxylic acid is selected from: one or more in phenylformic acid, p-tert-butyl benzoic acid, lauric acid, sad, the capric acid; Described vinyl monomer is selected from: one or more in vinylbenzene, the tertiary monocarboxylic acid vinyl ester; Described acrylic monomer is selected from: one or more in vinylformic acid, methacrylic acid, butyl methacrylate, butyl acrylate, methyl methacrylate, the glycidyl methacrylate; Described diprotic acid or dibasic acid anhydride are selected from: one or more in m-phthalic acid, phthalic anhydride, tetrahydrophthalic anhydride, maleic anhydride, sebacic acid, the hexanodioic acid; Described reactive non-migratory surfactants is selected from: one or more in cationic surfactant, aniorfic surfactant, the nonionic surface active agent; Described thickening material is selected from: one or more in caustic solubility ACRYLIC EMULSION class thickening material, the polyurethanes associative thickener; Described solvent is selected from: dimethylbenzene, toluene, 2,2,4 ,-trimethylammonium-1, one or more in 3-pentanediol mono isobutyrate, propylene glycol butyl ether, dipropylene glycol butyl ether, 1-Methoxy-2-propyl acetate, glycol methyl ether acetate, the petrolic solvent; Described initiator is selected from: one or more in Diisopropyl azodicarboxylate, the benzoyl peroxide.
According to the present invention, the synthetic of described emulsion comprises the steps:
1) acrylic polymer is synthetic: press formula ratio and drop into reaction solvent, be warming up to backflow, vinyl monomer, acrylic monomer and initiator are mixed, to be triggered dose fully after the dissolving, adopt the dropping mode reinforced, 3～6h drips off under reflux state, 1～2h is kept in insulation again, continues the mixed solution of dropwise reaction solvent and initiator, and 1～2h drips off under reflux state, 1～2h is kept in insulation again, obtains acrylic polymer;
2) acrylic acid modified alkyd resin is synthetic: siccative oil or semi-drying oil are added in the reaction flask, stir and heat up, when being warming up to 150～190 ℃, add polyvalent alcohol and lithium hydroxide successively, continue to be warming up to 220～240 ℃, and remain under this temperature and react, to the volume ratio of reactant and alcohol is that 1: 3 mixture is when keeping transparent, be reaction end, be cooled to 150～190 ℃, add monocarboxylic acid and acrylic polymer successively, be warming up to 200～220 ℃, react to acid number be 20～50mgKOH/g, be cooled to 150～190 ℃, add dibasic acid anhydride, react after acid number is 10～50mgKOH/g 200～240 ℃ of continuation and lower the temperature, promptly obtain acrylic acid modified alkyd resin;
3) Water-borne modification of acrylic acid modified alkyd resin: be dissolved in the formula ratio thickening material in the deionized water in advance, be made into aqueous thickener solution, with aforesaid propylene acid modified alkyd resin, reactive non-migratory surfactants, solubility promoter joins in the adjustable speed high-speed stirring still, add the formula ratio aqueous thickener solution simultaneously, be warming up to 50～90 ℃, start agitator, rotating speed from low to high, increase to 2000～3000r/min gradually, thorough mixing is even, viscosity adding aqueous thickener solution according to system is adjusted viscosity, stir 5～10min, then remaining aqueous thickener solution is added in the adjustable speed high-speed stirring still, and turn down rotating speed to 400～1000r/min, and the cooling of logical water of condensation, to be cooledly promptly obtain acrylic acid modified alkyd resin water dispersion emulsion to room temperature.
The acrylic acid modified alkyd resin water dispersion emulsion that utilization obtains can be made water-dispersion build industrial topcoat for base-material, and finish paint cooperates and comprises following component:
Wherein, described pigment is selected from: one or more in red iron oxide, iron oxide black, iron oxide yellow, titanium dioxide, phthalocyanine blue, the carbon black; It is the emulsion of effective constituent that described siccative is selected from cobalt naphthenate, zirconium naphthenate, calcium naphthenate or zinc naphthenate; Described auxiliary agent comprises: one or more in dispersion agent, wetting agent, flow agent, defoamer, sanitas, the thickening material; Described neutralizing agent is selected from: triethylamine, ammoniacal liquor, monoethanolamine, N, one or more among N-dimethylethanolamine, the AMP-95.
The preparation process of finish paint comprises:
1) in container, adds deionized water and the auxiliary agent that measures, stir evenly with the adjustable high-speed dispersion machine;
2) add dispersible pigment color paste, stir evenly;
3) add acrylic acid modified alkyd resin water dispersion emulsion;
4) add siccative, regulate viscosity, filter, get finished product with deionized water.
Compare with traditional solvent-borne type phthalic resin coating and existing aqueous alkide resin finish paint, finish paint of the present invention has following advantage: (1) makes acrylic acid modified alkyd resin water dispersion emulsion have suitable anti-hydrolytic performance because latex particle is coated by reactive non-migratory surfactants; Owing to do not adopt the preparation of water-dilutable method, avoided after the film forming because of containing the paint film property decline that a large amount of hydrophilic radicals causes; Adopt the oil-in-water type siccative, reduced siccative in storage process because the paint film that causes because of hydrolysis loses dried.(2) safe and convenient to use.This finish paint is dispersion medium with water, has improved construction environment, has avoided disaster hidden-trouble.(3) good decorative property.The base-material of this finish paint is an acrylic acid modified alkyd resin water dispersion emulsion, and film forming properties is better, can prepare the finish paint of high gloss, high-decoration.(4) paint film property is good.The base-material of this finish paint is acrylic acid modified alkyd resin water dispersion emulsion, both kept Synolac good from dryness, good sticking power and snappiness, possessed the weathering resistance of acrylic resin excellence again.(5) these finish paint raw material sources are extensive, and cost is low, is convenient to large-scale promotion application.(6) have a extensive future.The every index of this finish paint has has all met or exceeded solvent-borne type phthalic resin coating level, can replace solvent-borne type alcohol resin acid coating fully, use through reality, verified this finish paint is in facilities such as train, automobile, boats and ships, bridge, pipeline, storage tank, be applied to the decoration and the protection of steel and iron member, good suitability is arranged.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail, but the present invention never is confined to these embodiment, among the described embodiment, embodiment 1 and 2 is introduce acrylic polymer synthetic; Embodiment 3 and 4 is introduce acrylic acid modified alkyd resin synthetic; Embodiment 5 and 6 is Water-borne modification of introducing acrylic acid modified alkyd resin; Embodiment 7 is that introduction is that base-material prepares industrial topcoat with acrylic acid modified alkyd resin water dispersion emulsion.
Embodiment 1
In four-hole boiling flask, drop into dimethylbenzene 800g, be warming up to backflow.Vinylbenzene 720g, tertiary monocarboxylic acid vinyl ester 135g, vinylformic acid 45g, benzoyl peroxide 45g are mixed, treat that benzoyl peroxide (BPO) dissolves fully after, adopt the dropping mode reinforced, under reflux state, dripped off in 5 hours, insulation was kept 1.5 hours again.Continue to drip the mixing solutions of dimethylbenzene 100g and benzoyl peroxide 10g, dripped off in 1 hour under reflux state, insulation was kept 2 hours again, got final product discharging, and is standby as acrylic polymer.
Embodiment 2
In four-hole boiling flask, drop into dimethylbenzene 800g, be warming up to backflow.Vinylbenzene 720g, butyl acrylate 135g, methacrylic acid 45g, benzoyl peroxide 45g are mixed, treat that BPO dissolves fully after, adopt the dropping mode reinforced, under reflux state, dripped off in 4 hours, insulation was kept 1.5 hours again.Continue to drip the mixing solutions of dimethylbenzene 100g and benzoyl peroxide 10g, dripped off in 1 hour under reflux state, insulation was kept 2 hours again, got final product discharging, and is standby as acrylic polymer.
Embodiment 3
The oily 334g in Asia is added in the reaction flask, and logical nitrogen began to stir and heats up after 10 minute.When being warming up to 160 ℃, add tetramethylolmethane 103g, lithium hydroxide 0.2g and oxidation inhibitor 0.1g successively, continue to be warming up to 240 ℃, and remain on alcoholysis under this temperature, to alcoholysate and alcoholic acid volume ratio be 1: 3 mixture when keeping transparent, be end-point of alcoholysis.Be cooled to 180 ℃, add phenylformic acid 64g, embodiment 1 acrylic polymer 450g and oxidation inhibitor 0.1g successively, be warming up to 210 ℃ gradually, and acid number is reached below the 20mgKOH/g.Be cooled to 180 ℃, add phthalic anhydride 152g, continue esterification to acid number at 225 ℃ and be the cooling discharge of back below the 20mgKOH/g, standby as acrylic acid modified alkyd resin.
Embodiment 4
Soya-bean oil 170g, inferior oily 164g are added in the reaction flask, and logical nitrogen began to stir and heats up after 10 minute.When being warming up to 160 ℃, add tetramethylolmethane 103g, lithium hydroxide 0.2g and oxidation inhibitor 0.1g successively, continue to be warming up to 240 ℃, and remain on alcoholysis under this temperature, to alcoholysate and alcoholic acid volume ratio be 1: 3 mixture when keeping transparent, be end-point of alcoholysis.Be cooled to 180 ℃, add phenylformic acid 64g, embodiment 2 acrylic polymer 575g and oxidation inhibitor 0.1g successively, be warming up to 210 ℃ gradually, and acid number is reached below the 20mgKOH/g.Be cooled to 180 ℃, add phthalic anhydride 152g, continue esterification to acid number at 225 ℃ and be the cooling discharge of back below the 20mgKOH/g, standby as acrylic acid modified alkyd resin.
Embodiment 5
2g is dissolved among the deionized water 180g in advance with associative thickener 255 (being produced by Hong Kong strength brightness chemical industry company limited), is made into aqueous thickener solution.With embodiment 3 acrylic acid modified alkyd resin 200g, reactive non-migratory surfactants (3969 and 3300B, produce by UNIQUEMA company) 4g, dimethylbenzene 15g, PMA10g, PnB (propylene glycol butyl ether, Shanghai reagent head factory is produced) 2.5g and Texanol (2,2,4,-trimethylammonium-1, the 3-pentanediol mono isobutyrate, U.S. Estman company product) 2.5g adds in the adjustable speed high-speed stirring still, adds the 30g aqueous thickener solution simultaneously, is warming up to 80 ℃, start agitator, rotating speed increases to 2000r/min from low to high gradually, and thorough mixing is even.Viscosity according to system suitably adds aqueous thickener solution to adjust viscosity, stir 5min, then remaining aqueous thickener solution is added in the stirring tank, and turn down rotating speed to 1000r/min, and the cooling of logical water of condensation, to be cooledly promptly obtain acrylic acid modified alkyd resin water dispersion emulsion to room temperature.The acid number of this water dispersion emulsion is 9.6mgKOH/g, and solid part is 45%, and emulsion particle diameter is 1.57 μ m.
Embodiment 6
Associative thickener 2553g is dissolved among the deionized water 180g in advance, is made into aqueous thickener solution.Embodiment 4 acrylic acid modified alkyd resin 200g, reactive non-migratory surfactants (3969 and G5000) 4g, dimethylbenzene 15g, PnB 10g are added in the adjustable speed high-speed stirring still, add the 30g aqueous thickener solution simultaneously, be warming up to 80 ℃, start agitator, rotating speed from low to high, increase to 2000r/min gradually, thorough mixing is even.Viscosity according to system suitably adds aqueous thickener solution to adjust viscosity, stir 5min, then remaining aqueous thickener solution is added in the stirring tank, and turn down rotating speed to 1000r/min, and the cooling of logical water of condensation, to be cooledly promptly obtain acrylic acid modified alkyd resin water dispersion emulsion to room temperature.The acid number of this water dispersion emulsion is 10mgKOH/g, and solid part is 45%, and emulsion particle diameter is 1.98 μ m.
Embodiment 7
In the stainless steel still, add deionized water 4g, thickening material WT-202 0.15g, AMP-950.4g, flow agent BYK-333 0.15g, stir evenly with the adjustable high-speed dispersion machine.The proportioning of pressing in the table 1 adds mill base, stirs.Add embodiment 5 acrylic modified alkyd water dispersion emulsion 35g, add siccative VXW-4940 1.5g and PnB 3g at last, regulate viscosity, filter, get acrylic acid modified alkyd resin water dispersion industrial topcoat with deionized water.This finish paint stored through 6 months, had good stability, and it is almost constant to store later acid number.
Table 1 is the prescription of this routine acrylic acid modified alkyd resin water dispersion industrial topcoat.Siccative VXW-4940 is a U.S. first promise company product supplied in the table; Defoamer T-034 is a Shanghai coating institute product supplied; Dispersant B YK-333 is a German Bi Ke company product supplied; Thickening material WT-202 is the modest company of a U.S.'s moral product supplied; AMP-95 is U.S. Angus Chemical product supplied.PnB is the propylene glycol butyl ether, Shanghai reagent head factory product.
The prescription of table 1 acrylic acid modified alkyd resin water dispersion industrial topcoat
| Prescription 1 | Prescription 1 | Prescription 2 | Prescription 3 |
| Acrylic acid modified alkyd resin water dispersion emulsion | 35g | 35g | 35g |
| Titanium dioxide slurry | 24.5g | / | / |
| The carbon black slurry | / | 8g | / |
| The phthalocyanine blue slurry | / | / | 12.5g |
| BYK-333 | 0.15g | 0.15g | 0.15g |
| AMP-95 | 0.4g | 0.4g | 0.4g |
| T-034 | 0.1g | 0.1g | 0.1g |
| WT-202 | 0.15g | 0.15g | 0.15g |
| VXW-4940 | 1.5g | 1.5g | 1.5g |
| PnB | 3g | 3g | 3g |
The performance of the acrylic acid modified alkyd resin water dispersion industrial topcoat that obtains by above-mentioned prescription is as shown in table 2.
Table 2 acrylic acid modified alkyd resin water dispersion finish paint performance
Claims (7)
1, a kind of self-drying acrylic modified alkyd resin water dispersion emulsion, has " nuclear-shell " structure, it is characterized in that, this emulsion is " nuclear " with acrylic acid modified alkyd resin, with reactive non-migratory surfactants is " shell ", its acid number is 5～20mgKOH/g, and solid part is 40～60 weight %, and emulsion particle diameter is 0.2～2 μ m.
2, self-drying acrylic modified alkyd resin water dispersion emulsion according to claim 1 is characterized in that, the synthesizing formula that described acrylic acid modified alkyd resin water dispersion emulsion is counted as weight percents comprises following component:
3, self-drying acrylic modified alkyd resin water dispersion emulsion according to claim 1 and 2, it is characterized in that described siccative oil or semi-drying oil are selected from: one or more in Viscotrol C, oleum gossypii seminis, Chinese catalpa oil, Trisun Oil R 80, Thistle oil, oleum lini, inferior oil, synourin oil, soya-bean oil, tung oil, the Oleum Cocois; Described polyvalent alcohol is selected from: one or more in neopentyl glycol, glycerine, tetramethylolmethane, TriMethylolPropane(TMP), Diethylene Glycol, the ethylene glycol; Described monocarboxylic acid is selected from: one or more in phenylformic acid, p-tert-butyl benzoic acid, lauric acid, sad, the capric acid; Described vinyl monomer is selected from: one or more in vinylbenzene, the tertiary monocarboxylic acid vinyl ester; Described acrylic monomer is selected from: one or more in vinylformic acid, methacrylic acid, butyl methacrylate, butyl acrylate, methyl methacrylate, the glycidyl methacrylate; Described diprotic acid or dibasic acid anhydride are selected from: one or more in m-phthalic acid, phthalic anhydride, tetrahydrophthalic anhydride, maleic anhydride, sebacic acid, the hexanodioic acid; Described reactive non-migratory surfactants is selected from: one or more in cationic surfactant, aniorfic surfactant, the nonionic surface active agent; Described thickening material is selected from: one or more in caustic solubility ACRYLIC EMULSION class thickening material, the polyurethanes associative thickener; Described solvent is selected from: dimethylbenzene, toluene, 2,2,4 ,-trimethylammonium-1, one or more in 3-pentanediol mono isobutyrate, propylene glycol butyl ether, dipropylene glycol butyl ether, 1-Methoxy-2-propyl acetate, glycol methyl ether acetate, the petrolic solvent; Described initiator is selected from: one or more in Diisopropyl azodicarboxylate, the benzoyl peroxide.
4, self-drying acrylic modified alkyd resin water dispersion emulsion according to claim 1 and 2 is characterized in that the synthetic of this emulsion comprises the steps:
1) acrylic polymer is synthetic: press formula ratio and drop into reaction solvent, be warming up to backflow, vinyl monomer, acrylic monomer and initiator are mixed, to be triggered dose fully after the dissolving, adopt the dropping mode reinforced, 3～6h drips off under reflux state, 1～2h is kept in insulation again, continues the mixed solution of dropwise reaction solvent and initiator, and 1～2h drips off under reflux state, 1～2h is kept in insulation again, obtains acrylic polymer;
2) acrylic acid modified alkyd resin is synthetic: siccative oil or semi-drying oil are added in the reaction flask, stir and heat up, when being warming up to 150～190 ℃, add polyvalent alcohol and lithium hydroxide successively, continue to be warming up to 220～240 ℃, and remain under this temperature and react, to the volume ratio of reactant and alcohol is that 1: 3 mixture is when keeping transparent, be reaction end, be cooled to 150～190 ℃, add monocarboxylic acid and acrylic polymer successively, be warming up to 200～220 ℃, react to acid number be 20～50mgKOH/g, be cooled to 150～190 ℃, add dibasic acid anhydride, react after acid number is 10～50mgKOH/g 200～240 ℃ of continuation and lower the temperature, promptly obtain acrylic acid modified alkyd resin;
3) Water-borne modification of acrylic acid modified alkyd resin: be dissolved in the formula ratio thickening material in the deionized water in advance, be made into aqueous thickener solution, with aforesaid propylene acid modified alkyd resin, reactive non-migratory surfactants, solubility promoter joins in the adjustable speed high-speed stirring still, add the formula ratio aqueous thickener solution simultaneously, be warming up to 50～90 ℃, start agitator, rotating speed from low to high, increase to 2000～3000r/min gradually, thorough mixing is even, viscosity adding aqueous thickener solution according to system is adjusted viscosity, stir 5～10min, then remaining aqueous thickener solution is added in the adjustable speed high-speed stirring still, and turn down rotating speed to 400～1000r/min, and the cooling of logical water of condensation, to be cooledly promptly obtain acrylic acid modified alkyd resin water dispersion emulsion to room temperature.
5, a kind of is the industrial topcoat of base-material according to claim 1 or 2 described self-drying acrylic modified alkyd resin water dispersion emulsions, it is characterized in that this finish paint comprises following component:
6, industrial topcoat according to claim 5 is characterized in that, described pigment is selected from: one or more in red iron oxide, iron oxide black, iron oxide yellow, titanium dioxide, phthalocyanine blue, the carbon black; It is the emulsion of effective constituent that described siccative is selected from cobalt naphthenate, zirconium naphthenate, calcium naphthenate or zinc naphthenate; Described auxiliary agent comprises: one or more in dispersion agent, wetting agent, flow agent, defoamer, sanitas, the thickening material; Described neutralizing agent is selected from: triethylamine, ammoniacal liquor, monoethanolamine, N, one or more among N-dimethylethanolamine, the AMP-95; AMP-95 is the product of U.S. Angus Chemical.
7, industrial topcoat according to claim 5 is characterized in that, the preparation process of finish paint comprises:
1) in container, adds deionized water and the auxiliary agent that measures, stir evenly with the adjustable high-speed dispersion machine;
2) add dispersible pigment color paste, stir evenly;
3) add acrylic acid modified alkyd resin water dispersion emulsion;
4) add siccative, regulate viscosity, filter, get finished product with deionized water.
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| CN101831234A (en) * | 2010-05-25 | 2010-09-15 | 北京化工大学 | Method for preparing aqueous acrylic acid modified alkyd resin coating |
| CN101955721A (en) * | 2010-09-17 | 2011-01-26 | 天津灯塔涂料工业发展有限公司 | Quick-dry type acrylic modified alkyd paint and preparation method thereof |
| WO2011085520A1 (en) * | 2010-01-15 | 2011-07-21 | Dow Global Technologies Llc | Alkyd coating formulations |
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2007
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