31results about How to "Has "self-emulsifying" properties" patented technology

The present invention relates to a fluorine-containing polyether grafting modified waterborne polyurethane, the preparation and the application thereof, a structural general formula of polyurethane is as the formula, wherein, R1 is equal to a polyurethane soft-segment polyol structure, R2 is equal to a polyurethane hard-segment isocyanate structure, R3 is equal to a polyurethane hard-segment chain extender structure, R4 is equal to the fluorine-containing polyether; X is equal to NH and O; the preparation is that: the polyol and the isocyanate react to compound the polyurethane prepolymer, then the waterborne polyurethane are obtained through the chain propagation of a chain extender, then the waterborne polyurethane and the fluorine-containing polyether are carried out a grafting reaction in the big molecules, so as to synthesize the fluorine-containing polyether grafting modified waterborne polyurethane; the application is that: the present invention can be applied to aerospace, aviation, automobiles, electronics, textiles, carpets, leathers, paper making, packaging, washing, machinery, construction and other fields. The present invention adopts the water as the solvent and has no formaldehyde, no or low VOC emission, no bioaccumulation and no toxicity, which is a multifunctional, green, environment protective, water-proof and dirt-proof coating layer and fabric finishing agent.

The invention relates to a preparation method for a waterborne polyurethane modified epoxy resin curing agent. The preparation method comprises the following steps: adding catalyst boron trifluoride ether to a polyethylene glycol, then adding epoxy resin, stirring and heating the mixture for some time to prepare modified epoxy resin with epoxy groups at both ends; dripping monoepoxy compound 501 to diethylenetriamine according to an equal molar ratio to prepare a blocking product; reacting the obtained modified epoxy resin with bisepoxy compound 128 and polyurethane prepolymer by mixing to prepare polyurethane modified diepoxide; dripping the prepared polyurethane modified diepoxide to the prepared blocking product to obtain an addition product; and neutralizing the addition product into a salt by dripping glacial acetic acid, and then adding water to prepare the waterborne polyurethane modified epoxy resin curing agent. By introducing the epoxy resin, the invention enables the paint film obtained after curing to have superior water resistance, solvent resistance, chemical resistance and flexibility, thereby achieving the fine characteristics of the polyurethane, and overcoming the disadvantages of the epoxy resin.

The invention discloses a high-temperature-resistant self-crosslinking water-based epoxy resin for oil well cement. The preparation method steps are as follows: (1) dissolving the epoxy resin in N,N-dimethylformamide, feeding in nitrogen, and stirring Heat up to 85°C; (2) Dissolve benzoyl peroxide in acetone, then add the acetone solution dropwise to the solution in step (1), raise the temperature to 95°C, and keep the temperature constant for 30 minutes; (3) Add to the reaction solution Slowly add a mixed aqueous solution of 2-acrylamido-2-methylpropanesulfonic acid and acrylamide; constant temperature reaction for 4h; (4) rotary evaporation to remove solvent, use ethyl acetate to repeatedly wash to remove unreacted epoxy resin raw material, to obtain Self-crosslinking waterborne epoxy resin. The self-crosslinking water-based epoxy resin of the invention is added to the cement to simplify the on-site slurry mixing step; it can improve the brittleness characteristics of the oil well cement stone, and effectively improve the macroscopic mechanical properties and compactness of the oil well cement stone.

The invention discloses a preparation method for anionic linear copolymerized organic silicon softening and finishing agent. Under the conditions of high salinity and high alkalinity, cationic groups playing the function of stabilization in the structure of the organic silicon softening and finishing agent are easily flocculated with a dye dispersant, the stability of emulsion is broken, and phenomena like breaking of emulsion and floating of oil are generated. The method comprises organic silicon macromolecule chain extension reaction of 1,1,3,3-tetramethyl disiloxane, addition reaction of 3-chloro-2-methylpropene and terminated hydrogen-containing silicone oil, preparation of terminated chlorine-containing and side-chain hydrogen-containing silicone oil, addition reaction of olefin acid and side-chain hydrogen-containing silicone oil, ammonolysis of an organosilicone macromolecular chain segment, preparation of terminated epoxy-containing polyether, and condensation polymerization of the organosilicone macromolecular chain segment and a polyether chain segment. According to the method, the organosilicone chain segment is subjected to anion modification, the compatibility of the emulsion to anions is improved, the introduction of the anions also greatly improves the high temperature resistance, salt tolerance, alkaline resistance properties of the emulsion, and the product can be suitable for dyeing one-bath processing.

The invention discloses a highly elastic resin modified silicone oil, which relates to the field of fine chemical synthesis, and its main structural formula is, wherein, A is CH 2 CH 2 O, B for R 1 for CH 2 CH 2 CH 2 , R is m, n, p, z, x is an integer, and 3≤x≤5, 2≤m≤4, 5≤n≤7, 105≤p≤145, 2≤z≤4. By adopting the above-mentioned technical scheme, the present invention is mainly based on the principle that the polyurethane material has a soft and hard segment block structure, which can endow the material with high elastic performance. Highly active polyurea elastic resin has been developed into highly elastic resin modified silicone oil, which has a soft-hard segment in its structure, which endows it with a better treatment effect in fabric treatment than other silicone oils.

The invention discloses a preparation method of water-based chloroethylene / isobutyl vinyl ether copolymer dispersion. 60 to 75 mass percent of chloroethylene monomer, 25 to 40 mass percent of isobutyl vinyl ether monomer, acrylic hydroxyalkyl ester or the monomer of the same kind in an amount which is 5 to 15 percent of the total mass of the chloroethylene and the isobutyl vinyl ether, and unsaturated carboxylic acid monomer in an amount which is 10 to 25 percent of the total mass of the chloroethylene and the isobutyl vinyl ether are used as raw materials; and the water-based chloroethylene / isobutyl vinyl ether copolymer dispersion is obtained by polymerization reaction, neutralization reaction, aqueous phase dispersion treatment and organic solution removal in organic solvent, initiator and organic amine neutralizer. The dispersion has low volatile organic compound (VOC) content, environmental friendliness and good cohesiveness, and is particularly suitable for producing water-based coating, water-based adhesive and water-based ink.

The invention relates to polyurethane-urea modified self-emulsifying nanometer waterborne epoxy emulsion and a preparation method thereof. The emulsion has solid content of 40-50%, an average particle size of less than 500nm and a viscosity of 500-650(mPa*S). A chain segment in the self-emulsifying nanometer waterborne emulsion of the invention is introduced with a compound containing a nonionic hydrophilic chain segment, so that epoxy resin can have a self-emulsifying property, and the corrosion resistance and curing time of a coating can be improved by the polyurethane-urea based chain segment.A water dispersion system formed by the modified epoxy resin is then subjected to high pressure emulsification by a homogenizer and the particle size is dispersed to a nanoscale, and after a long time storage, physicochemical properties change little. Thus, the emulsion of the invention has good stability. The synthesis process of the method provided in the invention adds no organic solvent and has simple operation, thus being easy to realize.

The invention relates to a polyurea-modified self-emulsifying nano aqueous epoxy emulsion and a preparation method thereof. The solid content of the emulsion is 40-50 percent, the average particle diameter is less than 500 nanometers, and the viscosity is 400-600 (mPa.s). In the self-emulsifying nano aqueous emulsion provided by the invention, a compound containing a non-ionic hydrophilic chain segment is introduced into a chain segment, so that epoxy resin has self-emulsifying performance; and a water dispersion system formed by modified epoxy resin is emulsified under high pressure through a homogenizer, so that the dispersion particle diameter is up to nanometer grade, the physicochemical properties do not change remarkably during long-time storage, and high stability is achieved. No organic solvent is added in the synthesizing process of the method; the polyurea-modified self-emulsifying nano aqueous epoxy emulsion is an environmentally-friendly dope; and moreover, the method is easy to operate and implement.

The invention discloses a preparation method of an anionic organic-solvent-free and emulsifier-free polyurethane microemulsion. The preparation method comprises the following steps of: carrying out polymerization of isocyanate and polymer polyol by replacing an organic cosolvent used in the preparation process of the traditional polyurethane-polyacrylate microemulsion with inertial vinyl monomers to prepare a polyurethane prepolymer of which the terminal group is provided with unsaturated bonds, carrying out cooling, neutralization and aqueous dispersion on the polyurethane prepolymer, and then further initiating the polymerization of the vinyl monomers under the action of a water-soluble initiator to prepare the anionic organic-solvent-free and emulsifier-free polyurethane microemulsion. The preparation method disclosed by the invention thoroughly gets rid of the organic cosolvent added in the traditional waterborne polyurethane and achieves a real sense of environmental friendliness; and in addition, no emulsifier is added in the preparation process, and the prepared anionic organic-solvent-free and emulsifier-free polyurethane microemulsion has nano-scale particle diameter, is excellent in performance and can be used for a waterborne coating and the field of adhesives due to formula adjustment.

The invention relates to a preparation method of a non-yellowing fluffing agent, belonging to the organic synthesis and high-molecular polymerization reactions in the fields of chemical industry and high polymer chemistry. The method is characterized by comprising the following steps: preparing methyl-terminated polyether modified silicone oil for the non-yellowing fluffing agent, emulsifying to obtain a methyl-terminated polyether modified silicone oil emulsion, and compounding with fatty acid amide compounds, glacial acetic acid and deionized water to obtain the non-yellowing fluffing agent. By adopting the technical scheme, the method provided by the invention has the advantages and positive effects that in the prepared methyl-terminated polyether modified silicone oil with a novel structure, a hydrophilic polyether group is introduced to the chemical structure, thus the methyl-terminated polyether modified silicone oil has self-emulsifying property and is very convenient to emulsify; the prepared silicone oil emulsion has stable properties such as high-temperature resistance, acid-base resistance and no demulsification; meanwhile, by adopting methyl to terminate silicone oil, the existence of primary amine on the silicone oil chain is replaced, and the defects such as yellow spots of the silicone oil emulsion on the fabric are avoided.

The invention discloses a preparation method of cellulose nitrate-polyurethane-polyacrylic acid (ester) composite emulsion, which comprises using toluene diisocyanate, dealcoholized cellulose nitrate, polyether polyol, butanediol, dimethylol propionic acid and triethylamine as main raw materials, using step addition polymerization to synthesize anion polyurethane-cellulose nitrate water disperser, using the water disperser as seed emulsion, without any surface activator, via adding inducer to process in-site emulsion polymerization with polymer emulsion and emulsified acroleic acid monomer, to process polymerization and / or crosslink of pre-emulsified acroleic acid(ester) monomer in the seed emulsion seed and at surface, thereby preparing aqueous cellulose nitrate-polyurethane-polyacrylic acid (ester) composite latex particle with core-shell structure or interpenetrating polymer which can be used as filming polymer of high-performance aqueous wood dye.