50 results about "Phorone" patented technology

The invention relates to the technical field of paint processing, in particular to an epoxy resin modified polyurethane anticorrosive water-based paint and a preparation method thereof. The paint comprises polypropylene glycol, isophorone diisocyanate, dibutyltin dilaurate, 2,2-dimethylolpropionic acid, trihydroxypropane, epoxy resin, 1,4-butanediol, triethylamine, ethylenediamine, N-methylpyrrolidone, deionized water, a filler and an auxiliary. The method utilizes trimethylolpropane to assist cross-linking, and improves the chemical cross-linking density of the paint, thereby improving the structural stability and mechanical properties of the paint film; acetone is not added, it is not necessary to distill an emulsion to recover a solvent, the VOC content is reduced, the energy consumption is reduced, and a silane coupling agent is directly added to the epoxy resin modified polyurethane paint according to the paint formulation, which significantly improves the adhesion of the paint layer to a substrate.

The invention belongs to the technical field of preparation of self-repairing materials, and provides a preparation method of a self-repairing waterborne polyurethane film, wherein the preparation method comprises the following steps: 1) dissolving polytetrahydrofuran glycol in acetone, adding isophorone diisocyanate and a catalyst, and reacting to generate a polyurethane prepolymer; (2) sequentially adding N-methyl pyrrolidone, 2,2-dimethylolpropionic acid, 2-hydroxyethyl disulfide and triethylamine into the polyurethane prepolymer, and carrying out stirring reaction, so as to obtain a self-repairing waterborne polyurethane emulsion; and 3) pouring the self-repairing waterborne polyurethane emulsion on a polyfluortetraethylene plate, and drying to obtain the self-repairing waterborne polyurethane film. The reversible disulfide bond is introduced, based on the instability of the disulfide bond, a covalent bond of the disulfide bond is easy to break and recombine with other sulfur atoms, and self-repairing can be realized by utilizing an oxidation-reduction reaction between the disulfide bond and sulfydryl, so that the prepared waterborne polyurethane film has good self-repairing performance.

The invention discloses a preparation method of a reactive branched polyurethane polymeric dispersant, which comprises the steps of (1) putting phorone diisocyanate into a three-neck flask, heating to the temperature of 65-75 DEG C in an oil bath pan, and adding polyethylene glycol to react to synthesize a polyurethane prepolymer; (2) raising the temperature to 75-85 DEG C, and adding 2,2-dimethylolpropionic acid to carry out chain extension reaction; (3) after the chain extension reaction is completed, adding a branched structural monomer, keeping the temperature at 75-85 DEG C, and carrying out a branching reaction; (4) after the branching reaction is finished, reducing the temperature to 50-60 DEG C, grafting an anchoring group at the tail end of the polyurethane, and keeping the end capping rate at 50-75%; and (5) controlling the temperature at 50 DEG C, further grafting a reactive group, and completely blocking the isocyanate group. According to the invention, the polyurethane dispersant is designed into a branched structure on the basis of the polyurethane dispersant, and then a reactive group is introduced to the tail end, so that the self-crosslinking effect can be realized, and the color fixation effect can be achieved without adding an adhesive.

The invention provides a preparation method for a water-based aliphatic polyurethane adhesive for electronic process protection. The water-based aliphatic polyurethane adhesive is prepared from, by weight, 13%-17% of polyols, 12%-14% of isophorone diisocyanate, 0.3%-0.6% of neopentyl glycol, 0.4%-0.7% of trimethylolpropane, 1%-2% of hydrophilic chain-extending agent, 5%-10% of acetone, 0.01%-0.02% of catalyst, 1%-2% of triethylamine, 1%-2% of chain-reextending agent, 0.1%-1.5% of leveling agent, 0.1%-0.5% of defoamer, 0.1%-0.5% of wetting agent and 0.5%-1% of thickening agent and also contains 0.1%-1% of outer cross-linking agent. The prepared water-based aliphatic polyurethane adhesive is friendly to the environment, is reasonable in solid content, safe, environmentally friendly, non-inflammable, non-explosive and the like, and in manufacturing process, the solvent can be used as an ammonia ester level solvent for repeated utilization.

The invention relates to the field of catalysis, and discloses a composite oxide and a preparation method and application thereof. The composite oxide comprises M, Al and La, M is Ca and / or Mg, and the molar ratio of M to Al to La is (0.3-4.5): 1: (0-0.2). The composite oxide is low in cost and easy to regenerate, has relatively good pore volume, pore diameter and specific surface area, has a proper amount of acidic centers and alkaline centers, and can be used for preparing a porous material through the synergistic effect of the acidic centers and the alkaline centers. The method can promote the selective reaction for preparing isophorone through acetone condensation at low temperature, inhibits further condensation of acetone, reduces side reactions, and is easy for industrial application.

The invention discloses a self-repairing organic fluorine silicon modified polyurethane waterproof coating and a preparation method thereof, comprising the following raw materials in parts by mass: 60-80 parts of polytetramethylene ether glycol, 15-30 parts of perfluoropolyether glycol, iso 40-60 parts of phorone diisocyanate, 20-35 parts of 4,4'-dithiodiphenylamine, 20-30 parts of fluorine-containing hydroxyl silicone oil, 30-40 parts of tetrahydrofuran, 0.8-2 parts of dibutyltin dilaurate, 2-3 parts of Tween 80, 15-20 parts of nano-calcium carbonate, 5-10 parts of nano-hydroxycalcium phosphate, 10-20 parts of deionized water; the preparation method is as follows: S1: prepare polyurethane prepolymer; S2: mix 4 , 4'-dithiodiphenylamine and fluorine-containing hydroxyl silicone oil were dissolved in tetrahydrofuran, then polyurethane prepolymer was added, and stirred and reacted at 60°C for 3-6 hours under a nitrogen atmosphere; S3: Preparation of organic fluorine-silicon modified polyurethane waterproof coating . The present invention combines disulfide bond, shape memory effect, and organic fluorine silicon modification, and by introducing S-S, C-F, Si-O bonds into the polyurethane molecular chain, it significantly improves its hydrophobicity, oil repellency, high and low temperature resistance, Weather resistance, corrosion resistance and other properties.

The invention discloses a high-strength anti-yellowing polyurethane lamp cover and a preparation method thereof, comprising the following steps: (1) preparing a shell: taking polytetrahydrofuran ether glycol, toluene diisocyanate, 4,4'-dithio Diphenylamine, isophorone diamine, modified lignin mixed reaction, obtain shell; (2) get aliphatic polyester polyol, copolymer, trimerization catalyst, hexamethylene diisocyanate and mix, add resin, Coating on the surface of the shell, curing to obtain the coating, and making the lamp cover. The invention sets the shell and the coating structure, and through the setting of the centering component and its preparation process, the cardanol is used to modify the lignin, and the polyurethane component is adjusted to enhance the mechanical properties and anti-ultraviolet properties of the shell. The resin and copolymer are introduced into the acrylic polyurethane coating system to improve the coating performance and obtain a high-strength anti-yellowing ground lamp cover.

The invention discloses a method for preparing isophorone diamine, wherein the method comprises: using phorone nitrile as a raw material, under an effect of a metal cobalt catalyst, ammonia gas and hydrogen are orderly introduced into an organic solvent, and are reacts under stirring for 1-8h at 40-180 DEG C in a pressure condition of 1-10 MPa, and after reaction, a reaction mixture is post-treated to obtain the isophorone diamine. Uniformly-dispersive and high active metal cobalt catalyst is prepared by a sol-gel method, and when the catalyst is used for preparing isophorone diamine, a conversion rate of IPN can reach 100%, and the yield of IPAD is 78.5-98.3%. The catalyst has a long service life, and after the catalyst repeats eight-time by simple filtration after catalytic reaction, the conversion rate of IPN reduces 6.3%, yield of IPDA reduces 7.8%, and catalyst activity is almost not changed.

The invention belongs to selenite (SeO 3 2‑ ) detection field, and relates to a preparation method and application of a near-infrared fluorescent probe for detecting selenite. Activation of levulinic acid by catalyst EDC and DMAP, the activation product and malononitrile isophorone intermediate 1 (2-[3-(4-hydroxystyryl)-5,5-dimethyl ‑cyclohex‑2‑ene‑1‑ylidene] malononitrile) to carry out condensation acylation reaction to obtain a compound based on malononitrile isophorones, which can be used as selenous It is a highly selective fluorescent probe for acid radicals, and its fluorescence emission wavelength is above 650 nm, which realizes near-infrared fluorescence spectrum identification. The results show that the probe SeP1 has high efficiency and specific selectivity to selenite, and has strong anti-interference ability. The minimum detection limit of the probe for selenite is 0.068 μM, and has practical value in the detection of selenite in the environment.

The invention relates to equipment and a method for preparing isophorone through acetone gas phase condensation. The equipment comprises an acetone recovery tower, a first partition wall tower, an isopropyl acetone tower and a second partition wall tower; in the first partition wall tower, a partition plate is positioned on a central axis in the tower, an azeotropic rectification zone is positioned on the left side of the partition plate, and a water purification zone is positioned on the right side of the partition plate; and in the second partition wall tower, a partition plate is positionedon a central axis in the tower, a primary distillation zone is positioned on the left side of the partition plate, a lateral line zone is positioned on the right side of the partition plate, a publicrectifying section is positioned at the upper part of the partition plate, and a public stripping section is positioned at the lower part of the partition plate. The equipment and the method providedby the invention have the benefits that with the adoption of the partition wall towers and other novel separation technologies, all products in the acetone condensation reaction can be effectively separated and recovered, namely isopolone as a main product, isopropyl acetone as a by-product, sym-trimethylbenzene, a tetramer and the like, and the quality purity of each of the products is higher than or equal to 99.60%; and in addition, the technical process of preparing the isophorone by the acetone condensation is significantly simplified, so that the equipment investment and the energy consumption are reduced.

The invention discloses a super-tough room temperature intrinsic self-repairing elastomer material with high light transmittance and a preparation method thereof. The structural formula of the material is 10≤n≤60. The material is formed by polycondensation of isophorone diamine, toluene diisocyanate-terminated polypropylene glycol and small molecule monohydric alcohol. First, the toluene diisocyanate-terminated polypropylene glycol is dissolved in N,N'-dimethylformamide In the process, add isophorone diamine and small molecule monohydric alcohol respectively, mix and polycondense to obtain a polymer solution, and finally remove the solvent. The intrinsic self-healing elastomer material of the present invention can complete the repair process at room temperature, has high transparency, can be stretched to about 20 times its original length, and has excellent toughness.

The invention discloses a post-treatment process for preparing isophorone by acetone liquid-phase condensation method. The process includes: extracting a part of the liquid-phase stream of the tower bottom of the reactive distillation column and sending it to the isophorone demulsification recovery tower for disposal, and recovering the isophorone in the stream without additional additives, containing isophorone The top stream of the demulsification tower of phorone is then partially or fully returned to the reactive distillation tower; the isophorone-containing water phase is flashed or distilled to recover isophorone, and the water is returned to the reactive distillation tower for recycling. ; The liquid phase catalyst recovered by flash evaporation or distillation is concentrated and sent back to the reaction unit for recycling. By adopting the process of the invention, the energy consumption can be greatly reduced, the loss of isophorone and the catalyst in the wastewater can be significantly reduced, and the amount of the wastewater can be significantly reduced.

Provided is a preparation method for an antifogging thin film coating with high light transmission. M-phthalic acid triethylene glycol ester-5-sodium sulfonate (self made), polyethylene glycol 400, isophorone diisocyanate and pentaerythritol triacrylate are employed as main raw materials, dibutyltin dilaurate is employed as a catalyst, dimethylolpropionic acid is employed as a chain extender, acetone is employed as a solvent, and hydrophilic UV prepolymers are prepared; ethyl orthosilicate is employed as a precursor, gamma-methacryloxy propyl trimethoxysilane is employed as a modifier, a sol-gel method is employed, and uniform and stable modified SiO2 sol is prepared; the hydrophilic UV prepolymers and the modified SiO2 sol are subjected to hybridization through a UV curing way, and a thin film coating is obtained. The prepared thin film coating has good hardness and adhesive force, water resistance and high light transmission and good antifogging effects, and can be used for antifog of surfaces of glass and eyeglass. The preparation technology of the thin film coating accords with green environmental protection concepts, curing and film forming are fast, and comprehensive performances are good. The antifogging thin film coating has good market prospect and is suitable for popularization and application.