77results about How to "Good coating appearance" patented technology

The present invention provides a cationic electrodeposition coating composition having good appearance of coated film and high throwing power, and a method for making an amine-modified epoxy resin used for the cationic electrodeposition coating composition. The present invention relates to a method for making an amine-modified epoxy resin comprised in a cationic electrodeposition coating composition comprising the steps of: providing a half blocked isocyanate by reaction of an isocyanate compound with a blocking agent, preparing a blocked prepolymer by reaction of the half blocked isocyanate with a polyol, forming an epoxy resin containing oxazolidone ring by reaction of the blocked prepolymer with a diglycidyl ether type epoxy resin, chain-extending the epoxy resin containing oxazolidone ring with at least saturated or non-saturated hydrocarbon group containing dicarboxylic acid, and modifying the chain-extended epoxy resin with an amine.

It is an object to provide an acrylic resin composition dispersed in water. The composition has excellent appearance and sufficient dispersion stability, is stable even in one-package composition, exhibits physical properties of coating film excellent in water resistance, solvent resistance and weathering resistance, and sufficiently deals with recent environmental issues. It is also an object of the present invention to provide a coating film formed using such an acrylic resin composition dispersed in water. It is also an object of the present invention to provide a coating film formed using such an acrylic resin composition dispersed in water. The acrylic resin composition dispersed in water is an one-package composition obtained by combining a polymer comprising a monomer unit containing an aliphatic hydrocarbon group having 8 to 24 carbon atoms and a (meth)acrylic acid monomer unit, an oxazoline compound having two or more oxazoline rings and a specific amine compound.

The present invention provides a method of forming a composite coating film which makes it possible to attain both appearance and workability in a high-humidity environment. The method of forming a composite coating film according to the present invention comprises applying a water-based base coat composition on a substrate, and then a clear coat thereon, wherein said water-based base coat composition comprises a pigment and a resin emulsion obtained by emulsion polymerization of an alpha,beta-ethylenically unsaturated monomer mixture, said alpha,beta-ethylenically unsaturated monomer mixture having an acid value of 3 to 50 and containing at least 65% by weight of a (meth)acrylic ester whose ester moiety contains 1 or 2 carbon atoms.

The invention belongs to the field of polyester resin, and relates to PU curable powder paint polyester resin excellent in cold resistance and a production method thereof. The polyester resin is formed through copolymerization of terephthalic acid, 3,3-tetramethyleneglutaric acid, resorcinol-O,O'-diacetic acid, DL-12-hydroxystearic acid, N-butyldiethanolamine, 1,4-cyclohexanedimethanol, catechin and the like. According to the PU curable powder paint polyester resin excellent in cold resistance and the production method thereof, by means of the 3,3-tetramethyleneglutaric acid, the resorcinol-O,O'-diacetic acid, the DL-12-hydroxystearic acid and the N-butyldiethanolamine which are excellent in cold resistance, a chain segment of the polyester resin is soft, and the low-temperature resistanceperformance is outstanding, so that the low-temperature brittleness of final film is reduced; and the obtained polyester resin and a polyurethane curing agent can be cured, the cold resistance of thefilm is excellent, the impact is almost unaffected after freezing is conducted at 0 DEG C and -5 DEG C for 6 h respectively, and the performance of the final film completely meets the requirements ofpowder paint.

The isocyanate composition has a balance of low viscosity, water dispersion properties, drying properties and water resistance, and contains an isocyanate compound represented by general formula (I).In general formula (I), A is a residue containing a structure from the reaction of an active hydrogen-containing hydrophilic compound and an isocyanate group, and the sum (m + n) of the average numberof m and the average number of n is 3. m is an integer of 1 or more. R is a group represented by general formula (II).

The invention discloses a preparation method of hydroxyl-terminated polyester resin for co-extruding an extinction powder coating. The preparation method comprises the following steps: adding dihydric alcohol and a branching agent into a synthetic reaction container, heating until materials are molten, adding p-terephthalic acid, m-phthalic acid and an esterified catalyst, then adding an antioxidant for reacting, to obtain the hydroxyl-terminated polyester resin for co-extruding the extinction powder coating. Compared with the prior art, the synthesized polyester resin has the following advantages that the glass transition temperature Tg of the polyester resin is more than 51 DEG C, and the storage stability can be provided; the viscosity is 2800-3000Pa.s (200 DEG C), and low viscosity can provide a good leveling effect; and the polyester resin has high hydroxyl value and can be subjected to coextrusion and extinction together with polyester resin having low hydroxyl value, and has low glossiness of 7-10%.

The invention discloses terminal hydroxyl polyester resin for co-extrusion extinction powder coating and a preparation method of the terminal hydroxyl polyester resin. The terminal hydroxyl polyester resin comprises trimethylolpropane, terephthalic acid, isophthalic acid, neopentyl glycol, an antioxygen and an esterification catalyst. Compared with the prior art, the synthesized polyester resin has the advantages that the glass transition temperature Tg of the polyester resin is higher than 51 DEG C; the polyester resin can provide a good storage stability; the viscosity is 2800-3000mPa.s (200 DEG C), and a good leveling effect can be provided due to the low viscosity; the polyester resin has a high hydroxyl value, carries out co-extrusion extinction with a low hydroxyl value, and has low luster being 7-10 percent.

The present invention provides polyamide curing agent compositions comprising the reaction products of (1) multifunctional amines of structure 1

where R₁ is CH2CH2CH2NH2; R₂, R₃ and R₄ independently are H or CH2CH2CH2NH2, and X is CH2CH2 or CH2CH2CH2 with (2) dimer fatty acids, optionally in combination with monofunctional fatty acids, the reaction product preferably comprising at least 15 wt % tetrahydropyrimidine-containing components. The curing agent compositions are useful for crosslinking epoxy resins to produce coatings, adhesives, floorings, composites and other articles.

A method for manufacturing a high strength galvanized steel sheet and a high strength galvanized steel sheet are provided. A base steel sheet having a chemical composition comprising C: 0.03% to 0.35%, Si: 0.01% to 0.50%, Mn: 3.6% to 8.0%, Al: 0.001% to 1.000%, P≦0.10%, S≦0.010%, and the balance comprising Fe and incidental impurities, on a percent by mass basis, is subjected to annealing and galvanization treatment, wherein the maximum steel sheet temperature in an annealing furnace is 600° C. or higher and 700° C. or lower, the steel sheet transit time in a temperature region of the maximum steel sheet temperature of 600° C. or higher and 700° C. or lower is specified to be 30 seconds or more and 10 minutes or less, and the dew point in an atmosphere is specified to be −45° C. or lower.

The invention discloses hydroxyl-terminated polyester resin for co-extrusion extinction powder paint. The hydroxyl-terminated polyester resin comprises a branching agent, terephthalic acid, isophthalic acid, dihydric alcohol, an antioxidant and an esterification catalyst. Compared with the prior art, the polyester resin synthesized in the invention has the advantage that the glass transition temperature Tg of the polyester resin is higher than 51 DEG C and good storage stability can be provided; the viscosity is 2800-3000mPa.s (200 DEG C) so as to provide good leveling effects, a hydroxyl value is relatively high so as to have very low gloss of 7-10% as low-hydroxyl-value co-extrusion extinction.

The invention belongs to the field of organosilicon chemistry, and discloses a high residual adhesive rate solvent-type paper isolation agent and a preparation method thereof; the high residual adhesive rate solvent-type paper isolation agent is composed of the following components by weight: 30 parts of a base material, 1-3 parts of hydrogen-containing silicone oil, 70 parts of an organic solvent, 0.5-1.5 parts of an inhibitor and 0.5-1 part of a catalyst. The preparation method comprises the following steps: (1) mixing the base material and the organic solvent, then adding the catalyst, mixing and stirring evenly; (2) then adding the inhibitor, mixing and stirring evenly; and (3) adding the hydrogen-containing silicone oil mixing and stirring evenly to obtain the high residual adhesive rate solvent-type paper isolation agent. The high residual adhesive rate solvent-type paper isolation agent can fast cure at a lower temperature, is excellent in effect, good in appearance of coating, good in substrate adhesion, low in silicon transfer, and low in stripping force, and the residual adhesive rate is up to 85-90%.

The invention provides a coating composition for a kettle, the composition contains: (A) crystalline polyester resin particles using an ethylene terephthalate unit as a main component, (B) crystalline polyester resin particles using an butylene terephthalate unit as a main component, and (c) an organic solvent having a solubility of less than 5% by weight when being lower than 40 DEG C and more than 99% by weight when being higher than 180 DEG C, for the particles (A) and the particles (B), wherein proportions of the particles (A) and the particles (B) are based on a total of the two, the proportion of the particles (A) is 95-30% by weight and the proportion of the particles (B) is 5-70% by weight, the content of the organic solvent (C) is 50-500 parts relative to 100 parts of the total of the particles (A) and the particles (B) by weight.

The invention discloses an epoxy-group-containing solid resin which is prepared by carrying out solution polymerization on the following three monomers in percentage by weight: 6-92% of monomer A, 0-86% of monomer B and 2-40% of monomer C. The monomer A is acrylate and/or methacrylate; the monomer B is a vinyl monomer; and the monomer C is epoxy unsaturated polyfunctional group ester and/or epoxy unsaturated polyfunctional group ether. The epoxy-group-containing solid resin product and production process are environment-friendly, are free from the restrictions of the use region, and are low in cost. The solid resin can be matched with the existing material formula by an existing device technique to manufacture a thermosetting powder paint, and the prepared powder paint has high performance.

A sealing method comprising affixing an adhesive tape (e.g., a pressure-sensitive adhesive tape) to an adherend to be sealed, placing a sealing article that contains a hot-melt/fluidizable thermosetting sealing material on the adhesive tape, and heating the sealing article to a temperature sufficient to allow the article hot-melt/fluidize and thermoset. The adhesive tape has a substrate that suppresses penetration of air trapped in the affixing step between the adherend and adhesive tape into the sealing article.

The invention provides a heat-resistant and flame-resistant powder coating for a gas-cooker body surface layer. The heat-resistant and flame-resistant powder coating is prepared from, by weight, 8-10 parts of organic silicon resin, 10-20 parts of thermosetting fluorocarbon resin, 20-30 parts of hydroxyl polyester resin, 2-4 parts of isocyanate curing agent, 1-2 parts of 3-glycidoxypropyltrimethoxysilane, 5-8 parts of ferric oxide, 4-6 parts of ethylene-propylene-diene monomer, 5-10 parts of silica micropowder, 2-4 parts of zinc oxide, 4-6 parts of zirconium oxide, 15-20 parts of kaolin fine powder, 1-2 parts of bi-( 3,5-tertiary butyl-4-hydroxy phenyl ) sulfide, 5-8 parts of magnesium hydroxide, 8-10 parts of aluminum hydroxide, 0.5-1.0 part of 2-ethylhexyl methacrylate, 1-2 parts of polyvinylpyrrolidone, 0.2-0.4 part of acrylic ester flatting agent, 6-8 parts of carbon black and 3-4 parts of modified assistant. The heat-resistant and flame-resistant powder coating is good in heat resistance and flame resistance, low in curing temperature, short in curing time, good in coating flatting performance, high in adhesive force, good in coating appearance and resistant to acid and alkali, and can be applied to the gas-cooker body surface layer.

The invention provides a powder coating for a washing machine shell. The powder coating is prepared from, by weight, 80-90 parts of o-cresol-formaldehyde epoxy resin, 30-32 parts of hydantoin epoxy resin, 2-3 parts of ethanediamine, 0.5-1.0 part of boron trifluoride ethylamine complex, 3-5 parts of rosin modified phenolic resin, 2-4 parts of glycerin, 2-4 parts of nano-silicon dioxide, 2-4 parts of dimethyl silicone oil, 6-8 parts of vermiculite power, 1-3 parts of leveling agent, 1-2 parts of triethanolamine, 2-3 parts of oleic acid, 0.5-1 part of white oil, 20-25 parts of titanium dioxide, 3-5 parts of light calcium carbonate, 0.2-1 part of molybdenum disulfide, 0.1-0.5 part of benzoin and 0.3-0.5 part of modified negative ion powder. The powder coating is good in corrosion resistance, water resistance and insulating property, low in curing temperature and short in curing time, the coating film is good in leveling property, high in adhesion, good in appearance, resistant to acid and alkali and capable of purifying air, and the coating can be used for household electrical appliances of washing machines and the like.

The invention provides a curve coating process method for building decoration. According to the invention, a base material is molded into a curve firstly, then a workpiece on which a solid wood veneer is adhered is coated, wherein the coating process comprises the following steps: 1, sanding the solid wood veneer on a plane worktable and then coating priming paint, repeating the step of sanding and priming paint coating at least once again, then sanding and coating finish paint, and repeating the step of sanding and coating finish paint at least once again; 2, pasting the solid wood veneer coated with paint on the molded base material after paint on the solid wood veneer is dried by air; and 3, finally coating the finish paint on the surface of the workpiece on which the solid wood veneer is adhered. Compared with the prior art, the curve coating process method is more convenient to operate, the mass, mechanical and standard production is achieved, the material and labor costs are lowered, low-carbon and environment friendliness are implemented, and the coating appearance effect is excellent.

The invention relates to a method for preparing an exterior wall coating, which comprises the steps of preparing modified acrylate emulsion and preparing the coating, wherein 65 parts of water, 60 parts of rutile type titanium dioxide, 10 parts of mica powder, 20 parts of heavy calcium carbonate, 2 parts of aluminium silicate, 0.2 part of defoaming agent and 1 part of thickening agent are dispersed in a high-speed disperser for 40 minutes, and then transferred to a grinder; and the prepared 100 parts of modified acrylate emulsion is added for grinding and mixing so as to form the exterior wall coating.