8results about How to "Good chroma" patented technology

This invention discloses a method for preparing pentaerythritol oleate based on sodium bisulfite. The method involves the esterification reaction of pentaerythritol and oleic acid with sodium bisulfite as an auxiliary agent. Sodium bisulfite, as an auxiliary agent, possesses both catalytic and antioxidant functions, effectively improving the reaction rate and product yield while suppressing oxidation side reactions. This eliminates the need for additional antioxidants, improving product quality and reducing costs. The preparation method is simple, mild, and environmentally friendly, with readily available raw materials, low-cost auxiliary agents, and easy separation. After the reaction, the catalyst is removed by hot filtration, and unreacted oleic acid is removed by solvent extraction, effectively reducing the product's acid value. The extracted potassium oleate byproduct has a purity of 80%–90% and can be used as a flotation agent, release agent, or raw material for lubricant production, making it suitable for industrial applications. The resulting pentaerythritol oil is suitable for high-end lubricants, bio-based plasticizers, and environmentally friendly coatings.

This invention relates to the field of wastewater treatment and discloses a device and method for the combined removal of heavy metals and antibiotics from wastewater. The device includes: a coagulation reaction zone, a pre-sedimentation tank, a high-efficiency sedimentation tank, an ozone distribution zone, an ozone oxidation tank, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank, and a disinfection tank. The coagulation reaction zone is symmetrically and fixedly connected to one side of the pre-sedimentation tank, and the high-efficiency sedimentation tank is fixedly connected to the other side of the pre-sedimentation tank. This invention achieves rapid and efficient sedimentation of coagulated flocs through the combination of vertical and horizontal flow high-efficiency sedimentation tanks, removing heavy metals from wastewater in the form of precipitates. Furthermore, the advanced ozone oxidation process removes antibiotics, improves the biodegradability of the wastewater, and simultaneously disinfects the effluent, saving investment. In addition, the efficient solid-liquid separation of flat sheet membrane modules replaces the secondary sedimentation tank, effectively ensuring that the effluent is clear and meets standards.

The invention discloses a green preparation process of capryloyl hydroxamic acid, and relates to the technical field of fine chemical synthesis. The environment-friendly preparation process of the capryloyl hydroxamic acid at least comprises the following preparation steps: mixing and stirring hydroxylamine sulfate, sodium hydroxide and ethanol, dropwise adding ethyl caprylate, and carrying out oximation reaction to obtain a reaction mixed system; reducing the temperature of the reaction mixed system, dropwise adding concentrated sulfuric acid to adjust the pH value to 6-7, and performing solid-liquid separation to obtain sodium sulfate and capryloyl hydroximic acid mother liquor; and carrying out rotary evaporation on the capryloyl hydroxamic acid mother liquor to recover the ethanol, and carrying out fractional crystallization to obtain the capryloyl hydroxamic acid. The green preparation process of capryloyl hydroxamic acid provided by the invention has the advantages of high raw material utilization rate, strong solvent recycling reusability, high product molar yield, high purity, good chroma, light smell, good corrosion resistance, continuous production, no three wastes in the process, low temperature and normal pressure, safety, green and energy saving, and accords with the green chemical engineering concept of carbon neutralization.

A display device and an electronic device including the display device are provided. The display device includes: a substrate; a transistor on a surface of the substrate; a sub-anode insulating layer disposed on the transistor and including a first portion and a second portion having different thicknesses from each other, and a third portion connecting the first portion and the second portion; a pixel electrode on the first portion, the second portion, and the third portion; a pixel defining layer on the pixel electrode and the sub-anode insulating layer; a light-emitting layer on the pixel electrode; and a common electrode on the light-emitting layer and the pixel defining layer. The sub-anode insulating layer includes a first sub-anode insulating layer and a second sub-anode insulating layer, the first sub-anode insulating layer including a first hole in the first portion, and the second sub-anode insulating layer including at least a portion defined within the first hole and corresponding to the first portion. The first sub-anode insulating layer includes an inorganic material, and the second sub-anode insulating layer includes an organic material.

This invention relates to the field of coatings, and discloses a high-color-ratio, corrosion-resistant yellow coating and its preparation method. The coating comprises the following components by weight: 50-60 parts by weight of waterborne epoxy-modified silicone resin, 25-35 parts by weight of modified bismuth vanadate, 1-2 parts by weight of nanocellulose, 0.3-0.8 parts by weight of dispersant, 0.2-0.5 parts by weight of defoamer, 0.2-0.5 parts by weight of leveling agent, and 2-3 parts by weight of corrosion-inhibiting pigment. The high-color-ratio, corrosion-resistant yellow coating formulation system of this invention is innovative, constructing a ternary synergistic system of waterborne epoxy-modified silicone resin-modified bismuth vanadate-nanocellulose, exhibiting excellent color and corrosion resistance. This coating utilizes microwave-induced flake-shaped bismuth vanadate, which has fewer lattice defects, achieves breakthrough color, and possesses high anti-corrosion performance.

The invention provides a coating and a preparation method thereof. The coating comprises a bismuth vanadate pigment based on plant polyphenol-protein composite modification, and a preparation method of the bismuth vanadate pigment comprises the following steps: A) mixing plant polyphenol with a protein substance to obtain a composite modifier; b) mixing and stirring the composite modifier and a precursor solution containing bismuth nitrate and ammonium metavanadate to obtain a modified precursor; c, the precursor is calcined, and the bismuth vanadate pigment is obtained.The bismuth vanadate pigment based on plant polyphenol-protein composite modification is applied to a coating through an innovative biomolecule synergistic modification technology, the excellent chromaticity is kept, and meanwhile the acid and alkali resistance is remarkably improved.

This invention relates to the field of phenolic resin technology, specifically to a preparation process for polymerized rosin-modified phenolic resin. First, polymeric rosin with high dimer content is purified by devolatilization, adsorption decolorization, and antisolvent precipitation to obtain directionally polymerized rosin A. Then, an epoxidation reaction is performed to obtain epoxidized product B. Subsequently, cashew phenol, 3-pentadecanylphenol, and oleic acid are grafted in stages to obtain directionally modified polymeric rosin C. Simultaneously, a phenolic prepolymer is prepared. Finally, the prepolymer, modified rosin C, and natural rosin are polycondensed together, and an antioxidant is added to obtain the finished product. This process, through directional control of raw materials and staged reaction control, enables the resin to possess high softening point, light color stability, high n-heptane tolerance, and excellent processing safety, significantly improving batch consistency and making it suitable for high-performance ink binders.