51results about How to "Achieving water-based" patented technology

The invention provides a method for preparing synthetic leather and the synthetic leather prepared by the method. The method comprises the following steps: (1) coating slurry containing surface waterborne polyurethane resin on the surface of release paper, and drying to form a finishing coat; (2) mixing and foaming the slurry containing the foaming waterborne polyurethane resin with air by using a foaming machine, and coating the foamed slurry on the surface of the finishing layer, and drying to form a medium foaming layer; and (3) adhering the surface of the foaming layer and a basic fabric by using an adhesive containing waterborne polyurethane resin, and drying. The method uses the waterborne resin foaming layer to replace the Base leather manufacturing process, avoids using toxic and harmful organic solvents, such as dimetbyl formamide (DMF), toluene and the like, solves the pollution problem in the synthetic leather industry, and realizes clean manufacture of the synthetic leather.

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 relates to a process for preparing water soluble epoxy resin grouting agent which consists of, introducing carboxyl radicals onto the molecular matrix of the epoxy resin, preparing water-based epoxy resin by neutralizing with neutralization agent, introducing double bonds to both ends of the molecular chain, employing water-soluble redox initiation system to produce water non-soluble gel through radical polymerization reaction. The invention can be applied to realize epoxide aquosity.

The invention relates to the technical field of environment-friendly coatings, in particular to a water-based epoxy wear-resistant floor coating and a preparation method and application thereof. The water-based epoxy wear-resistant floor coating comprises a composition A and a composition B, wherein the mass ratio of the composition A to the composition B is 1:(3.8-4.6); the composition B is a water-based epoxy emulsion; the composition A is prepared from, by mass, 37-42% of a water-based epoxy curing agent, 1-2% of a wetting dispersant, 0.1-0.3% of a defoaming agent, 0.1-0.5% of a leveling agent, 0.2-0.5% of an anti-settling agent, 1-3% of a coupling agent, 25-30% of a wear-resistant filler, 0.3-0.8% of pigments and 20-33% of water. The coating has excellent physical properties and greatwear resistance, can be applied to ground with a large pressure load and is long in service life.

The invention relates to an aqueous nano polyaniline-epoxy acrylic resin conductive anticorrosion primer base, which is prepared by mixing and stirring a nano polyaniline-epoxy acrylic resin mixture, aqueous acrylic acid anticorrosion emulsion, pigment-filler, and auxiliary agents. An in-situ emulsion polymerization method is adopted to make aniline carry out polymerization in epoxy acrylic resin to form resin wrapped nano polyaniline particles, which are evenly dispersed in resin, and then the particles are mixed with aqueous acrylic acid anticorrosion emulsion and pigment-filler to prepare the primer base. The anticorrosion primer base is enable to have an aqueous property, an in-situ emulsion polymerization technology and a nano technology are well combined, nano polyaniline particles are well dispersed in paint, the coating has a good conductive property and anticorrosion performance therefore, on the other hand, the oil-water layering is avoided because no solvent is added, and thus the primer base can be well stored.

The invention discloses a preparation of a water-based adhesive and a preparation method of a metal/polypropylene composite material. The preparation of the water-based adhesive is characterized in that the preparation steps are as follows: a, grafting and copolymerizing chlorinated polypropylene; and b, preparing the adhesive, wherein the adhesive is uniformly coated on the upper part of a metal sample strip; a polypropylene sheet is adhered on the metal sample strip by the adhesive; the metal and the polypropylene sheet are clamped on an injection molding machine, and placed in an oven with the temperature of 100 DEG C-150 DEG C for 15-60 minutes after the clamping. Compared with the prior art, the preparation of the water-based adhesive and the reparation method of metal/polypropylene composite material have the advantages that the adhesive is better in bonding strength and good in environment friendliness; and the composite material is simple to prepare and capable of being produced in mass.

The invention relates to a preparation method of a polyether polyol-unsaturated polyester modified hydroxyl acrylic dispersion. The preparation method comprises the following steps: (1) mixing organicepoxide, a compound containing activated hydrogen groups, a solvent, a catalyst and unsaturated polyester, rising the temperature to 140 to 145 DEG C, and stirring and reacting for 0.5 to 1 hour, thus obtaining a reaction mixture; (2) dropwise adding an initiator and an acrylate monomer in the reaction mixture obtained in step (1) by two steps, keeping warm for 1 to 2 hours after completing dropwise adding, cooling to 75 to 80 DEG C, adding a neutralizer, adding deionized water, and stirring and dispersing for 1 to 2 hours, thus obtaining the polyether polyol-unsaturated polyester modified hydroxyl acrylic dispersion.

The invention discloses an aqueous finishing coat. The aqueous finishing coat is composed of a component A and a component B, wherein the component A is composed of the following components by weight percent: 55-85% of aqueous acrylic emulsion, 5-25% of tinting color, 0.5-2.5% of dispersant, 0.5-2% of defoaming agent, 0.5-2% of base material humectant. 0.5-1% of flatting agent, 0.1-0.5% of rheological additive, 0.1-0.5% of catalyst, 0.5-1.5% of light stabilizer and the balance of deionized water; the component B is an aqueous firming agent; and the weight ratio of the component A to the component B is (2-6) to 1. The aqueous finishing coat provided by the invention realizes the aquosity of the finishing cost for a car coating and the amount of the contained harmful substances is obviously reduced; the harmful substances, such as benzene, toluene, dimethylbenzene, ethylbenzene and the like, are not detected; and the content of VOC (Volatile Organic Compounds) is greatly reduced and the content of the free formaldehyde is obviously reduced. The aqueous finishing coat provided by the invention has the advantages of reducing the pollution on the environment and also improving the work environment of the coating operating personnel.

The invention discloses a method for preparing blocked polyurethane-epoxy resin composite emulsifier. The method includes the steps of ring opening of epoxy resin and synthesis of the blocked polyurethane-epoxy resin composite emulsifier. The use amount of epoxy resin is increased, so corrosion resistance of the emulsifier is greatly improved, and accordingly the composite emulsifier with good stability and excellent corrosion resistance is prepared.

The invention discloses a preparation method of epoxy modified thermosetting acrylic waterborne resin. The method includes: dissolving epoxy resin in an alcohol ether solvent to obtain a material A, and mixing a reaction monomer with an initiator to obtain a material B; dissolving the initiator in the alcohol ether solvent to obtain a material C; feeding the material A into a four-mouth flask andconducting heating reflux; feeding the material C into a beaker, stirring the substances evenly, dripping the mixture into the four-mouth flask for 3h, conducting heating reflux and heat preservationfor 2h; replenishing the material C under reflux within 30min, and conducting reflux and heat preservation for 3h; and performing cooling and discharging, thus obtaining the epoxy modified thermosetting acrylic waterborne resin. By grafting the epoxy resin to thermosetting waterborne resin molecules, the method can well overcome the shortcomings of poor fullness and chemical resistance, and then improves the product performance and increase the product competitiveness.

The invention provides waterborne alkyd resin emulsion for interior wall water-based paint and a preparation method thereof. The method comprises the following steps: carrying out esterification reaction on 30 weight percent to 60 weight percent of unsaturated fatty acid, 5 weight percent to 10 weight percent of polyatomic alcohol, 10 weight percent to 15 weight percent of trimethylol propane and 15 weight percent to 20 weight percent of binary acid until the acid value is reduced to be less than or equal to 10mgKOH/g; adding trimellitic anhydride at 175 DEG C to 180 DEG C until the acid value is 60mgKOH/g to 75mgKOH/g; adding dimethylethanolamine, an emulsifier and water at 80 DEG C to 90 DEG C and mixing, wherein the emulsifier is an anion emulsifier and/or a non-ionic emulsifier and the branching degree of the emulsifier is 50 percent to 90 percent or lower. The waterborne alkyd resin emulsion for the interior wall water-based paint, provided by the invention, has excellent stability; meanwhile, a film of the paint prepared from the waterborne alkyd resin emulsion has excellent water resistance.

The invention discloses a preparation method of a water-based glue for ultrahigh-modulus polyethylene fibers. The method comprises the following steps of: adding saturated long-chain fatty acid, epoxyresin, a solvent and a catalyst into a reaction kettle according to a formula ratio, introducing nitrogen for protection, performing heating to 100+/-5DEG C, and keeping the temperature for 2h; raising the temperature to 110+/-5DEG C, dropwise adding a mixture of single-ended vinyl-terminated silicone oil, butyl acrylate, an acrylic acid fluorine-containing monomer, a silane coupling agent and aninitiator according to a formula ratio at a constant speed within 3h; and adding an initiator, continuously carrying out reaction for 2h, performing cooling to 65+/-5DEG C, dropwise adding organic alkali according to a formula amount for neutralizing, adding water according to a formula amount, performing dispersing at a high speed, and conducting discharging to obtain the water-based glue for ultrahigh-modulus polyethylene fibers. The water-based glue prepared by the invention has excellent wettability and adhesive property on ultrahigh-modulus polyethylene fibers, and has the characteristics of softness, environmental protection and no pollution.

The invention relates to waterborne polyurethane printing ink resin and a production method thereof. The production method of the waterborne polyurethane printing ink resin comprises the steps of according to weight parts, under a condition of protection of inert gas, taking 100-140 parts of cyclic isocyanate, 95-160 parts of polypropylene oxide glycol with a molecular weight of 2000, 40-70 partsof homemade polyester polyol with a molecular weight of 200-400 and 20-35 parts of hydrophilic groups, and placing the raw materials in a container; stirring a solution in the container, slowly elevating temperature, when the temperature reaches 80 DEG C, carrying out a heat preservation reaction for 5 hours, conducting sampling, detecting a NCO value, and when the NCO value is in a prescribed range, starting to conduct cooling to obtain a NCO-terminated prepolymer; and adding 10-20 parts of ethylenediamine and 600-650 parts of deionized water into the prepolymer, when the temperature is 30 DEG C, conducting high-speed stirring for two hours, conducting sampling, detecting the NCO value, when the NCO value is zero, conducting high-speed stirring continuously for 2 hours, and standing to obtain the waterborne polyurethane resin. According to the waterborne polyurethane printing ink resin and the production method thereof, waterborne polyurethane is produced by adopting an anion self-emulsifying technology, the tenacity and the rigidity of the anionic waterborne polyurethane are good, and the anionic waterborne polyurethane has good dispersity, water resistance and stability so thatthe waterborne polyurethane can conveniently form a film.

The invention relates to the technical field of epoxy resin, and in particular, relates to water-based high-temperature-resistant epoxy resin and a preparation method thereof. The high-temperature-resistant epoxy resin is composed of the preparation raw materials: a diepoxy compound and dihydroxy ammonium carboxylate. According to the prepared polyfunctional glycidyl amine epoxy resin, a certain amount of hydrophilic groups are introduced, and then water is added for high-speed shearing to obtain the water-based high-temperature-resistant epoxy resin; the water-based high-temperature-resistantepoxy resin can be cured with an amine curing agent, the thermal deformation temperature is obviously increased, the solubility in water is improved, uniform dispersion is promoted, and a dispersionsystem with proper viscosity is formed; water-based treatment is realized, a uniform cross-linked network can be formed with an amine curing agent, increasingly strict environmental protection standards are met, and the constructability of imide is improved; the epoxy resin containing the epoxy group is directly prepared by utilizing the imide structure, so that the high temperature resistance isremarkably improved, and meanwhile, good tensile and bending strength and high temperature resistance stability are ensured.

The invention relates to a preparation method of a polyaniline dispersion, which comprises the following steps: preparing an acidic doped emulsifier P-PVA by using phosphoric acid modified polyvinyl alcohol, weighing 4-6 parts by weight of P-PVA, adding into 100 parts by weight of deionized water, heating to 70-90 DEG C, stirring until P-PVA is completely dissolved, cooling to room temperature, adding 3-6 parts by weight of aniline at one time, and stirring for 0.5-1.5 hours; and weighing 3-6 parts by weight of ammonium persulfate, adding 100 parts by weight of hydrochloric acid, stirring and dissolving, transferring into a constant-pressure dropping funnel, dropwise adding into the step (2) for 1-3 hours, and stirring for 12-24 hours at the temperature of 25-30 DEG C to obtain the phosphorylated aqueous polyaniline dispersion. Phosphoric acid groups are introduced through a chemical method, acid modification and water treatment are achieved, and meanwhile the adhesive force and the anti-corrosion function of the coating are improved; the acid and the polyvinyl alcohol jointly realize the water-based property of the polyaniline, so that the excellent dispersion property of the polyaniline is realized; and acid modification under the normal temperature condition is realized, and the step of ice-water bath modification in the existing method is overcome.