79results about How to "Long activation period" patented technology

The invention relates to a preparation method of polyester acrylate hybrid aqueous dispersion, which belongs to the field of chemical coatings, and the preparation method comprises four steps of synthesizing hydroxyl acrylate resin, preparing an intermediate, preparing polyester acrylate resin and dispersing with deionized water. The preparation method effectively combines the advantages of polyester and acrylic resin, the prepared stable dispersion can be used as the hydroxyl resin component of a dual-component polyurethane coating for preparing a high-performance waterborne dual-component polyurethane coating with hydrophilic polyisocyanate, and a coating film has excellent performance; in addition, the preparation of the dispersion does not use amine as a neutralizer, thereby avoiding the smell caused by the amine and simplifying the process; and only a small amount of cosolvent is adopted in the dispersion, and the content of an organic solvent in the coating is low.

The invention discloses hyperbranched epoxy resin. The structure of the hyperbranched epoxy resin is shown by formula (I), wherein HBP is the skeleton of a hyperbranched hydroxyl polymer; R1 is an alkyl group of acid anhydride; R2 is an alkyl group of epoxy resin; the sum of m and n is greater than or equal to 2 and less than or equal to the total number of functional groups of the hyperbranched polymer while m and n are positive integers; and by introducing the hyperbranched polymer into a coating composition, the crosslinking density of the coating can be improved, and the hardness and flexibility of a paint film as well as the adhesion of the coating and a base material are enhanced. Meanwhile, the activation period of the epoxy-amino system can be prolonged. The invention also discloses a preparation method of the hyperbranched epoxy resin and an application thereof in coating.

The invention discloses high-hardness scratch-resistant double-component waterborne polyurethane woodwork varnish and a preparation method thereof. The varnish consists of double components, i.e., a primer and a curing agent, wherein the primer consists of hydroxyl polyacrylate dispersion resin, dispersant, nano-scale silicon dioxide glass powder, a scratch-resistant wax auxiliary agent, an organic bismuth / zinc composite catalyst, an antifoaming agent, a wetting agent, water and an additive, wherein the sum of the weight percentages of the A components is 100 percent; the curing agent consists of propylene glycol ethyl ether acetate and allophanate modified HDI (Hexamethylene Diisocyanate) tripolymer; the sum of the weight percentages of the B components is 100 percent; and the A components and the B components are mixed according to the equivalent molar ratio of n-NCO:n-OH as 1.38:1.62. The varnish has the advantages of high hardness, shortened surface drying time and hard drying time, long activation period, superior performance, environmental friendliness of the product and high operability.

The invention discloses a preparation method of a high-stability platinum complex catalyst and an application thereof. The catalyst comprises a high-stability platinum complex catalyst and a temperature-sensitive compound coated microcapsule platinum catalyst, the high-stability platinum complex catalyst takes a platinum complex formed by taking a siloxane compound containing unsaturated groups asa ligand as a core and an active component, or takes an organic compound containing N and P as a modification auxiliary agent; the temperature-sensitive compound coated microcapsule platinum catalysttakes the high-stability platinum complex with unsaturated group coordination or a common Karstedt catalyst as a basic core; the temperature-sensitive compound is used as a coating layer to form thecore-shell microsphere with hydrosilylation catalytic activity, the platinum catalyst and the inhibitor are less in use amount and long in normal-temperature storage time, intense catalytic dehydrogenation of hydrogen-containing silicone oil is not easy to cause, and the transportation and use safety is high.

The invention belongs to the chemical industry field, and relates to a preparation method of high-performance aqueous polyester polyol dispersoid. The preparation method comprises the following steps: firstly enabling dicarboxylic acid with a sulphonate-SO3M group to react with diatomic alcohol to obtain a polyester intermediate, enabling a certain amount of polyester intermediate to react with polybasic carboxylic acid and polyhydric alcohol to synthesize polyester resin with hydroxyl, and then directly adding de-ionized water to disperse so as to obtain the aqueous polyester polyol dispersoid. The aqueous polyester polyol dispersoid prepared by the invention has the characteristics of no organic solvent, high solid content, low viscosity, high storage stability, no need of neutralization by amine neutralizer and simple preparation method, and is mainly used for preparing high-performance coating material. For example, the polyester polyol dispersoid can be used with water-based polyisocyanate curing agent for preparing water-based bi-component polyurethane coating, and can also be used with water-based amine resin curing agent as water-based automobile finish.

The invention discloses low-viscosity star-shaped hydroxyl polyester as well as a preparation method and application thereof, and belongs to the field of macromolecules of polyester. According to the preparation method, a caprolactone modified AB2 type branched monomer is first prepared, and is prepared by a reaction between 1 mole of dihydroxymethyl alkyl carboxylic acid and 1-4 moles of caprolactone at 80-160 DEG C, afterwards, a polybasic glycidyl ether nucleus, monocarboxylic acid and the caprolactone modified AB2 type branched monomer are mixed and subjected to reaction at 100-160 DEG C, and a ring cleavage reaction between a carboxyl group and an epoxy group is catalyzed by utilizing a quaternary ammonium salt as a catalyst to generate a secondary carbonyl group for preparing the low-viscosity star-shaped hydroxyl polyester. The low-viscosity star-shaped hydroxyl polyester provided by the invention has the advantages that a synthetic process is simple, the adjustable range of the hydroxyl value of a product is large, the viscosity is low, and the like; the low-viscosity star-shaped hydroxyl polyester has the hydroxyl value between 1500mgKOH / g and 350mgKOH / g, has the viscosity as low as 3000-15000cp below 25 DEG C, and can be cross-linked with a polyurethane curing agent containing an isocyanate group; high-solid-content paint can be prepared, and the film coating performance meets a national standard for solvent type bi-component polyurethane paint for woodenware.

The invention relates to a waterborne hydroxyl acrylic finish paint and a preparation method thereof. The waterborne hydroxyl acrylic finish paint comprises a component A and a component B, and the component A comprises, by mass, 50-55 parts of an aqueous hydroxyl acrylic dispersion, 4.5-9 parts of deionized water, 0.2-0.3 part of a pH adjuster, 2-3 parts of a cosolvent, 1-1.2 parts of a wetting and leveling agent, 1-1.2 parts of a brightener, 1-1.2 parts of an emulsifier, 3-4 parts of an anti-settling agent, 0.5-0.7 part of a thickener, 0.2-0.4 part of an antifoaming agent, 0.8-1.5 parts of adispersant, 2-21 parts of a pigment and 10-26 parts of a filler; the component B comprises, by mass, 75-85 parts of an aqueous isocyanate curing agent and 15-25 parts of an environmentally friendly solvent; and a mass ratio of the component A to the component B is (8-10):1 . The finish paint in the invention has far higher hardness and glossiness than existing low-hydroxyl waterborne acrylic polyurethane finish paints, and has a far lower cost than high-hydroxyl waterborne acrylic polyurethane finish paints.

The invention discloses high-adhesion water-based waterproof primer as well as a preparation method thereof and application thereof. The high-adhesion water-based waterproof primer is prepared from the following components in parts by weight: 25-32 parts of composite emulsified polymer emulsion, 2.8-3.3 parts of coupling film-forming agent, 0.6-1 part of hydroxyethyl cellulose, 15-18 parts of titanium dioxide, 4-6 parts of barium sulfate, 4-6 parts of calcium carbonate, 4-6 parts of talcum powder, 1-2 parts of dispersing agent, 0.5-1 part of wetting leveling agent, 0.2-0.4 part of de-foaming agent, 0.2-0.3 part of preservative, 1.8-2.2 parts of anti-freezing agent, 0.1-0.3 part of rheological agent, 0.1-0.3 part of pH regulator, 0.4-0.8 part of thickening agent and 24-31 parts of water. The high-adhesion water-based primer has excellent film-forming property, hardness, flexibility, water resistance, chemical resistance, sealing property, seepage force and adhesion, can be effectively dissolved and permeated into an organic silicon mould release agent on novel material plates such as an art ware, a cement product, a glass magnesium board and a special cast sectional material, is inseamless engagement with the board, and achieves the practical effect of improving coating quality and field construction environment. Moreover, the preparation method is easy, is low in cost, is simple in construction way, and reduces production and construction cost.

The invention discloses a water-based two-component floor paint and a preparation method thereof. The water-based two-component floor paint consists of a first component and a second component, wherein the first component comprises the following ingredients in percentage by total weight of the water-based two-component floor paint: 65 to 75 percent of water-based polyacrylate emulsion, 0.1 to 0.3 percent of leveling agent, 0.1 to 0.4 percent of surfactant, 0.1 to 0.3 percent of other scratch resistance agent, 0.5 to 1.2 percent of antifoaming agent, 3 to 5 percent of coalescing agent, 1 to 2 percent of scratch-resistant wax, 0.5 to 1 percent of thickener and 4 to 23 percent of deionized water or pure water; and the second component is water-dispersed poly diisocyanate and has the content of 8 to 10 percent by total weight of the water-based two-component floor paint. The preparation method comprises the steps of weighing the components according to a formula, preparing first, second, third and fourth mixed solutions, adding water into the fourth mixed solution and packaging.

The invention relates to a two-component water-based finish paint based on an oily polyisocyanate curing agent and a preparation method thereof. The two-component water-based finish paint is composedof a component A and a component B, wherein the component A is prepared from a water-based hydroxyl acrylic acid dispersion, a coalescing agent, a leveling agent, a base material wetting agent, a light stabilizer, an anti-blistering additive, color paste, a thickener, a pH regulator, a bactericide and water; and the component B consists of an oily polyisocyanate curing agent and a cosolvent. According to the invention, the water-based hydroxyl acrylic acid dispersion is selected as the water-based resin, and the oil-based polyisocyanate curing agent with low price, longer activation period, higher foaming limit and better constructability is selected as the curing agent, so that the obtained two-component water-based finish paint is low in cost; and the paint film has the advantages of high gloss, favorable weather resistance, favorable water resistance, low VOC content and no pungent smell, and can be widely popularized and applied.

The invention discloses waterborne epoxy hammer paint and a preparation method thereof. The waterborne epoxy hammer paint is prepared from a component A and a component B, wherein the component A is prepared from waterborne epoxy resin, deionized water, a co-solvent, a wetting agent, a hammering agent, a thixotropic agent, a thickening agent, a dispersing agent, silver powder, color paste and a defoaming agent; the component B is prepared from a waterborne epoxy curing agent and deionized water. The preparation method comprises the steps of adding the waterborne epoxy resin into a paint mixingtank, and then adding the dispersing agent, the wetting agent and the deionized water into the paint mixing tank; adding the co-solvent and the thixotropic agent in a high-speed stirring state, thenblending with the color paste so as to obtain the required color, and then adding the thickening agent and the silver powder; after the mixture is evenly stirred, reducing the stirring speed, and adding the hammering agent and the defoaming agent under the condition of low-speed stirring so as to obtain the component A; evenly mixing the waterborne epoxy curing agent with the deionized water to obtain the component B; evenly mixing the prepared component A and component B to obtain the waterborne epoxy hammer paint. The waterborne epoxy hammer paint prepared by the invention has the advantagesof being attractive in appearance, high in paint film hardness, good in corrosion resistance and high in glossiness.

The invention provides a high-hardness and quick-drying water-based two-component filling clear primer. The high-hardness and quick-drying water-based two-component filling clear primer comprises a component A and a component B which are uniformly mixed according to an equivalent ratio of n (-NCO) to n (-OH) of 1.5-1.8, wherein the component A is prepared from the following components in percentage by weight: 75.0 to 80.0 percent of water-based acrylic emulsion; 0.8%-1.0% of an antifoaming agent, 4.0%-6.0% of a coalescing agent, 3.0%-6.0% of filling powder, 0.2%-0.3% of a wetting leveling agent, 0.4%-0.6% of an anti-settling agent, 0.1%-0.5% of a thickener, 2.0%-5.0% of a polishing agent and 2.0%-10.0% of water. And the component B is prepared from the following components in percentage byweight: 30%-40% of modified IPDI polyisocyanate and 60%-70% of modified HDI polyisocyanate. The -OH in the primer emulsion component and -NCO in the curing agent component are subjected to a deep cross-linking reaction to generate a urethane bond, the coating film is compact, and the hardness of the paint film is improved. In addition, the minimum film forming temperature MFFT is larger than or equal to 30 DEG C, the high drying speed is provided for a product system, and the requirement for changing oil into water in solid wood paint can be met; the invention also provides a preparation method of the water-based two-component filling clear primer.

The invention discloses waterborne two-component acrylic hammer paint and a preparation method thereof and relates to the technical field of paint. The waterborne two-component acrylic hammer paint comprises, by weight, a component A comprising 60-70 parts of waterborne hydroxy acrylic resin, 7-25 parts of deionized water, 3-5 parts of cosolvent, 0.3-0.7 part of wetting auxiliary, 5-8 parts of hammer agent, 1-2 parts of thickener, 1-2 parts of dispersant, 3-5 parts of silver paste, 0.1-0.3 part of light absorber, 0.1-0.3 part of light stabilizer, 1-2 parts of color paste and 0.5-1 part of defoamer and a component B comprising 70-80 parts of isocyanate curing agent and 20-30 parts of cosolvent. During construction, a user only needs to mix the component A and the component B according to aweight ratio of 6-8:1. The hammer paint can be dried at normal temperature, is quick in drying and needless of heating for baking and can present needed hammer pattern three-dimensional effect after being sprayed; the hammer paint is convenient for construction and spraying, a paint film is hard while not crisp, high in plumpness, glossiness and hardness, excellent in resistance to corrosion and chemicals and weatherability, good in industrial application prospect and simple in preparation method and construction method and belongs to environment-friendly products.

The invention relates to a hydrophobic flame-retardant water-based curing agent. The curing agent is obtained by performing a reaction on hexamethylene diisocyanate, a hydrophilic monomer, an oligomerpolyol, a hydroxyl-containing melamine derivative, hexafluoroisopropanol and a solvent under the action of a catalyst and performing neutralization. The invention also provides a preparation method of the hydrophobic flame-retardant water-based curing agent. The prepared hydrophobic flame-retardant water-based curing agent provided by the invention does not contain an aromatic hydrocarbon solvent, and has the characteristics of a long active period, good storage stability and the like; and polyurethane paint prepared from the curing agent and hydroxyl-containing water-based resin has excellent hydrophobicity, scratch resistance, stain resistance, aging resistance, corrosion resistance and good flame retardance; and the curing agent is widely used in two-component systems such as water-based wood paint, water-based industrial paint and water-based plastic paint.

The invention belongs to the technical field of coatings, and discloses a water-based high-performance coating for plastic cement. The water-based high-performance coating comprises the following components: 10-50 parts of a special water-based acrylic resin; 10 to 50 parts of a special waterborne polyurethane; 1-20 parts of a coalescing agent; 0.2 to 1 part of water-based leveling agent; 0.1 to 1part of a water-based defoaming agent; 0.1-1 part of an aqueous dispersant; 0-8 parts of a matting powder; 1-30 parts of a water-based color paste; 1 to 25 parts of deionized water; and 5-20 parts ofa curing agent. The water-based high-performance coating for plastic cement provided by the invention can overcome the defect of insufficient chemical resistance of a water-based coating system, andcan meet the requirements of a series of products with relatively high chemical resistance requirements on the market.

The invention discloses a waterborne paint composition. The waterborne paint composition includes the following components by weight: a component A, which includes, by weight, 40.0-70.0 parts of highhydroxyl value water dispersible acrylate resin, 10.0-40.0 parts of a pigment, and 3.6-22.0 parts of a polymer science acceptable paint additive; and a component B, which includes, by weight, 65.0-100.0 parts of a modified polyurethane curing agent. The waterborne paint composition provided by the invention has the advantages of high gloss, good weatherability, long activation period, room temperature curability and environment-friendliness, when cooperating with an appropriate cosolvent, a wetting agent and a defoaming agent, a waterborne paint composition with good adhesion, storability andother performance can be further obtained. The waterborne paint composition has good storage stability, has all properties meeting the requirements of current solvent based paint, has moderate price,and can adapt to the needs of domestic market.

The invention discloses an aziridine type waterborne blocked polyisocyanate curing agent and a preparation method. The aziridine type waterborne blocked polyisocyanate curing agent is prepared from the following raw materials in percentage by weight: 65 to 70 percent of waterborne polyisocyanate curing agent, 10 to 15 percent of aziridine and / or derivative thereof, 18 to 25 percent of propylene glycol ether ester solvent and 0.5 to 0.8 percent of additive. The polyisocyanate curing agent provided by the invention contains a few solvent or no solvent, is environment-friendly and nontoxic, is low in viscosity and is extremely easy to dissolve in a waterborne polymer; the aziridine type waterborne blocked polyisocyanate curing agent provided by the invention has the characteristics of being long in activation period, uniform in particle size after being emulsified, and good in stability, being roasted for deblocking at a low temperature, and the like; in addition, the aziridine type waterborne blocked polyisocyanate curing agent does not need to be subjected to any treatment, can be produced by applying a general prepolymer production device, and has the characteristics of low devicecost and simple operation; a new device does not need to be added, and moreover, the energy consumption is low in a treatment process.

The invention belongs to the technical field of adhesive materials, and particularly relates to an adhesive for wood and a preparation method of same. The preparation method of the adhesive for the wood comprises the following steps: uniformly mixing an adhesive A liquid material with an enhancer powder material to obtain a powder-liquid mixture, wherein the enhancer powder material is at least one of defatted soybean powder, cottonseed protein powder, peanut protein powder, starch and flour; then uniformly mixing the powder-liquid mixture with the adhesive B material to obtain an adhesive; and the adhesive is one of a polyurethane adhesive, a soybean protein adhesive and a starch adhesive. The adhesive prepared according to the preparation method disclosed by the invention is long in activation period and stable in bonding strength, and can be applied to processing of various artificial boards, such as plywood, blockboards and shaving boards.

The inventive epoxy resin aqueous dispersion and preparation method thereof belong to the field of chemical industry coatings, the aqueous dispersion contains: 20-45wt.% of an epoxy resin, 2-15wt.% of bisphenol A or bisphenol F, 0.01-0.2wt.% of a catalyst, 0.1-2wt.% of double-ended carboxyl polyethylene glycol, 5-20wt.% of a reactive emulsifying agent, 3-20wt.% of a solubilizing assistant and 25-55wt.% of deionized water; the reactive emulsifying agent is synthesized at first and the epoxy resin and the bisphenol A or bisphenol F are then subjected to reactive chain extension under the actionof the catalyst triphenylphosphine, when certain epoxy equivalent value is reached, the double-ended carboxyl polyethylene glycol is subsequently added for the reaction followed by the addition of the synthesized reactive emulsifying agent for the further reaction, in the end, the water and the solubilizing assistant are added to prepare the epoxy resin aqueous dispersion via high-speed dispersion. The inventive epoxy resin aqueous dispersion is in a shape of white milk, has excellent storage stability and can be mixed directly with an aqueous curing agent without the need of the high-speed dispersion. The invention can be applied to manufacturing industrial anticorrosive coatings, floor coatings, interior / exterior wall coatings for construction, etc.

The invention relates to a water-soaking-resistant priming finishing paint and a preparation method thereof for a glass water ball and belongs to the technical field of paint. Priming paint comprises A components and B components, the A components include hydroxy acrylic resins, rutile titanium dioxide, a dispersing agent, a defoaming agent, a flatting agent, precipitated barium sulphate, sericite, an anti-settling agent and a mixed solvent, and the B components include isophorone diisocyanate (IPDI) tripolymer curing agents and butyl acetate. Finishing paint includes A components and B components, the A components include hydroxy acrylic resins, a defoaming agent, a flatting agent, a drier and a mixed solvent, and the B components include IPDI tripolymer curing agents and butyl acetate. The water-soaking-resistant priming finishing paint and the preparation method thereof for the glass water ball have the advantages that the surface drying is fast, the activation period is long, the filling performance is good, and the chemical resistance is excellent.

The invention relates to two-component waterborne epoxy silver powder paint as well as a preparation method and application thereof, and belongs to the technical field of environment-friendly waterborne paint. The two-component waterborne epoxy silver powder paint comprises a main agent and a curing agent, the main agent comprises the following components in percentage by weight: 40-70% of waterborne epoxy resin dispersion, 4-8% of liquid epoxy resin, 2-6% of anti-sagging resin, 10-20% of lithium magnesium sodium silicate solution, passivated aluminum silver paste and 0.5-6% of auxiliaries; the curing agent comprises the following components in percentage by weight: 40-60% of aliphatic amine adduct, 3-5% of cosolvent, 0.3-3% of assistant and the balance of deionized water. The two-component epoxy water-based silver powder paint has the following advantages of being good in stability and weather resistance, low in VOC content, free of pungent smell, low in price and wide in application range; the curing agent has moderate viscosity after being treated, is bubble-free after being stirred at high speed and can be instantly packaged; the main agent and the curing agent are good in mixing compatibility, better in constructability, long in activation period, good in sagging resistance, high in gloss and good in weather resistance and salt fog resistance.

The invention relates to an anti-drag epoxy coating in a water-based pipeline, a preparation method of the anti-drag epoxy coating, an anti-corrosion coating, and an application of the anti-drag epoxycoating, and belongs to the technical field of anti-corrosion coatings. The anti-drag epoxy coating in the water-based pipeline comprises a first component and a second component. The first componentcomprises the following components in parts by weight: 1 part of a water-based epoxy emulsion, 0.3-0.5 part of deionized water, 0.005-0.01 part of modified graphene, 0.05-0.1 part of modified nano SiO2, 0.95-1.25 part of a pigment filler, 0.01-0.02 part of a defoaming agent, 0.01-0.03 part of a dispersing agent, 0.01-0.03 part of a flatting agent, 0.01-0.02 part of an anti-flash-rust agent, 0.01-0.02 part of an adhesion promoting agent, 0.01-0.02 part of a bactericide and 0.01-0.02 part of a thickening agent. The second component comprises the following components in parts by weight: 1 part of a water-based epoxy amine curing agent and 0.2 part of a coalescing agent. The anti-drag epoxy coating can greatly reduce gas transmission resistance, and can be used for corrosion prevention and protection of the inner wall of conveying pipelines for natural gas conveying, coal gas conveying, gas-liquid mixed conveying of natural gas-condensed liquid and the like.

The invention discloses a water-based organic silicon modified fluorocarbon wind turbine blade coating, and relates to the technical field of water-based coatings, the coating is composed of a component A and a component B. The component B is water dispersible isocyanate; The component A is prepared from 55 to 60 parts of water-based fluorocarbon resin, 5 to 10 parts of polyether modified polydimethylsiloxane, 0.1 to 0.2 part of preservative, 0.2 to 0.5 part of defoaming agent, 0.3 to 0.5 part of substrate wetting agent, 0.3 to 0.5 part of flatting agent, 1 to 3 parts of adhesion promoter, 30 to 35 parts of water-based industrial color paste, 0.3 to 0.6 part of thickening agent, 0.1 to 0.3 part of pH regulator and 1 to 5 parts of deionized water; The reaction equivalence ratio of -OH provided by the component A to -NCO provided by the component B is 1: 1.45. The invention has the following advantages: the coating has good mechanical properties, high aging resistance and high humidity and heat resistance of the fluorocarbon coating, and also has excellent self-cleaning function and anti-icing function.

The invention provides a preparation method for hydroxylacrylic resin. According to the method, an acrylic monomer in a raw material is selected, and a method of dropwise adding the monomer in sections and controlling the temperature in sections is adopted to prepare the hydroxyl acrylic resin with high reaction activity. A coating prepared from the hydroxyl acrylic resin is relatively long in activation period, relatively rapid in drying speed and relatively low in cost; and the cured coating has excellent performance.

The invention belongs to the technical field of epoxy drinking water tank paint, and relates to low-viscosity thick-coating solvent-free epoxy drinking water tank paint and a preparation method and aconstruction method of the low-viscosity thick-coating solvent-free epoxy drinking water tank paint. According to the paint, liquid epoxy resin, an active diluent, a pigment filler, an auxiliary agentand a phenolic aldehyde amine curing agent are used as components. The liquid epoxy resin is bisphenol A liquid epoxy resin or / and bisphenol F type liquid epoxy resin, the reactive diluent is a monofunctional reactive diluent, and by optimizing the components, the finally prepared thick-coating solvent-free epoxy drinking water tank paint does not need to be diluted by additionally adding a diluent during construction, and the thickness of a dry film coated at one time is greater than or equal to 300 microns. After construction, the coating can be quickly dried at a low temperature, sagging caused by long-time non-drying is avoided, the thick coating can be promoted to have excellent adhesive force, chemical corrosion resistance, salt spray resistance and the like, the requirements of drinking water hygienic indexes and toxicological indexes can be met while the service life is prolonged, and the coating has positive significance.

The invention relates to a modified polyaspartic acid ester DTM anticorrosive paint. The paint comprises a component A and a component B. The component A comprises the following components in parts by weight: 40-60 parts of polyaspartic acid ester, 30-40 parts of an antirust base material, 4-8 parts of an auxiliary agent A and 5-15 parts of a solvent A. The component B is hydrophilic modified polyisocyanate and comprises 80 to 110 parts of HDI tripolymer, 1 to 3 parts of an auxiliary agent B and 1 to 5 parts of a solvent B. The invention also relates to a preparation method of the modified polyaspartic acid ester DTM anticorrosive paint. The paint is simple in preparation process, and has the advantages of environmental protection, easy construction, corrosion resistance, curing at normal temperature and the like; the solid content of the paint is 100%, and zero emission of VOC is achieved; raw materials do not need to be subjected to dehumidification, environmental humidity does not need to be controlled in a construction process, the activation period of the paint is long, and a construction window is wide; and the paint has large adhesive force to a metal surface, has good waterproof and anti-corrosion performance, can directly coats the metal surface, and does not need to be matched with primer.

The invention discloses unsaturated polyester resin for a coating. The unsaturated polyester resin is prepared from modified unsaturated polyester resin, a defoaming agent, an accelerator, a filler and a curing agent. A preparation method of the unsaturated polyester resin comprises the steps that polyhedric alcohols and polyatomic acid / anhydride are added into a reaction kettle for performing condensation polymerization to obtain unsaturated polyester resin, a styrene mixing solution is added for performing dilution, the modified unsaturated polyester resin is obtained, the modified unsaturated polyester resin is placed into a high-speed dispersing machine, a component B, the defoaming agent and the accelerator are added and stirred till the materials are mixed to be uniform, a componentC is added, stirring continues to be performed, and uniform mixing is performed to obtain the unsaturated polyester resin for the coating. According to the unsaturated polyester resin for the coating,the matching degree of the gel time and the surface drying time is good, the dried surface is formed within a short period of time, the high-gloss and non-sticky polyester resin coating can be obtained, the problem that a traditional unsaturated polyester resin product is long in surface drying time (longer than 1.5 h) and is even not dried is effectively solved, and the production efficiency isimproved.

The invention discloses an aluminum alloy door / window scratch repair putty and a preparation method thereof. The putty comprises a component A and a component B, wherein the component A is composed of an epoxy modified oil-free alkyd resin, butyl acetate, a dispersing agent, polyamide wax, ground calcium carbonate, talcum powder, a sanding agent and dimethylethanolamine; the component B is a hexamethylene diisocyanate (HDI)-toluene diisocyanate (TDI) mixed tripolymer; and the mass ratio of the component A to the component B is 10:1. The aluminum alloy door / window scratch repair putty uses the epoxy modified oil-free polyester as the base material, and thus, has high adhesive force for the aluminum alloy substrate. The aluminum alloy door / window scratch repair putty has the advantages of favorable drying property and favorable filling property, and is easy for sanding and scraping. The HDI-TDI mixed tripolymer is used as the crosslinking agent, thereby compromising the drying property, flexibility, sanding property and yellowing resistance of the putty layer. The mixture has the characteristics of long activation period and favorable workability.

The invention discloses a preparation method of an automotive topcoat composite coating capable of being rapidly cured and long in activation period. The preparation method comprises the following steps that (1) 1k base paint free of a chemical crosslinking reaction is sprayed to the surface of an automobile, and the surface is dried for 5-10 min; (2) 1k transparent promotion coating free of a chemical crosslinking reaction and including 0.5%-1% of a dryer is sprayed on the 1k base paint, and the surface is dried for 5-10 min; and (3) 2k coating varnish is sprayed, the dryer in the 1k transparent promotion coating is migrated into the 2k coating varnish, a 2k coating varnish layer is formed, and rapid curing of the coating varnish is promoted. The invention further provides the automotivetopcoat composite coating prepared through the method. The automotive topcoat composite coating achieves the technical aims that the drying speed of the 2k coating varnish can be increased and the activation period of the 2k coating varnish can be prolonged. By means of the automotive topcoat composite coating and the preparation method thereof, baking is not needed, equipment does not need to bemodified or added, additional operation training is not needed, and practicality is high.