16results about How to "Solve discoloration" patented technology

The utility model relates to a guide rail spotlight. The guide rail spotlight comprises a lamp body, a light source assembly and a power supply assembly, the light source assembly comprises a face ring, a lens, a light source and a reflection cup. The surface ring is arranged at the light emitting end of the lamp body; the lens is arranged on the surface ring; the reflection cup is arranged on the inner side of the lens, and the reflection surface of the reflection cup faces the lens; a light source mounting rod and a light source mounting station are arranged on the lamp body, the light source mounting rod is arranged between the lens and the reflection cup, and the surface, facing the reflection cup, of the light source mounting rod is a mounting plane; the light source mounting station is arranged on the mounting plane of the light source mounting rod; the light source is arranged on the light source installation station and electrically connected with the light source assembly. According to the scheme provided by the invention, the light irradiated on the product can be softer, and the problem of color change of the product or dazzling of customers caused by too concentrated light is avoided; and meanwhile, the problem that the lamp body cannot slide downwards after being hung on the guide rail for a long time is effectively solved, the structure is simple, and installation is convenient.

This invention discloses a synthesis process for methylnadic anhydride, comprising the following steps: maleic anhydride is dissolved in a solvent, and methylcyclopentadiene or a starting material containing 60-98 wt% methylcyclopentadiene is added dropwise at a uniform rate at 10-60°C to carry out a synthesis reaction, wherein the mass ratio of methylcyclopentadiene to maleic anhydride is (0.5-1.2):1; after the reaction is completed, light components are removed under reduced pressure, the light components including the solvent, unreacted methylcyclopentadiene and its dimer, and then isomerization is carried out at 140-200°C to obtain methylnadic anhydride.

The invention relates to the field of polymerized rosin, in particular to zinc-free polymerized rosin and a preparation method thereof. Zinc-free polymerized rosin comprises the following raw materials: masson pine, inorganic acid, zinc chloride, a solvent, oxaloacetic acid and phosphotungstic acid. The inorganic acid accounts for 0.6-1% of the mass of the masson pine, the zinc chloride accounts for 2.5-4.5% of the mass of the masson pine, the solvent accounts for 75-85% of the mass of the masson pine, the oxaloacetic acid accounts for 0.04-0.08% of the mass of the masson pine, and the phosphotungstic acid accounts for 0.04-0.08% of the mass of the masson pine. According to the zinc-free polymerized rosin provided by the invention, the high yield of a product can be kept, zinc residues can be thoroughly removed, the overseas technical monopoly can be broken, the overall competitiveness of the domestic ink industry is improved, and a strength is contributed to the healthy development of national economy.

The invention relates to the technical field of ceramic tiles, in particular to an antibacterial master batch, an antibacterial ceramic glaze and antibacterial ceramic, and the antibacterial master batch is prepared by the following steps: step 1, taking crushed sepiolite, uniformly mixing with a hydrochloric acid solution, filtering, washing and drying after reaction to obtain sepiolite powder; taking sepiolite powder, adding water to prepare suspension liquid, mixing the sepiolite powder suspension liquid with a sodium phosphate solution for reaction, filtering and drying to obtain sepiolite treated by phosphoric acid; uniformly mixing sepiolite treated by phosphoric acid with a silver nitrate solution, reacting, filtering, washing, drying, and grinding into powder, so as to obtain an antibacterial master batch; according to the antibacterial master batch prepared by the invention and the ceramic prepared by utilizing the antibacterial master batch, the antibacterial effect and the antibacterial durability are remarkably improved, and the antibacterial master batch has certain discoloration resistance.

The invention belongs to the technical field of food processing, and particularly relates to a sunflower seed protein-chitosan hydrochloride compound as well as a preparation method and application thereof. According to the preparation method, a sunflower seed protein (SSP)-chitosan hydrochloride (CHC) compound (SSP-CHC) is prepared, stir-fried sunflower seed kernels are obtained through intermediate infrared stir-frying, the stir-fried sunflower seed kernels are ground to obtain sunflower seed paste, and the sunflower seed paste and the SSP-CHC are mixed and thermally homogenized to prepare the sunflower seed sauce. In the preparation process of the sunflower seed sauce, a compound formed by protein and polysaccharide has the functional characteristics of good emulsification, coagulation, interface adsorption and the like of the protein and also has the processing characteristics of excellent water-holding capacity, thickening property and the like of the polysaccharide, directional design of sunflower seed protein and chitosan is developed, and thermal homogenization and thermal canning are adopted, so that the sunflower seed sauce is prepared. The sunflower seed sauce is rich in fragrance and stable to store. The heat effect of degrading chlorogenic acid and increasing the content of flavor substances by mid-infrared rays and the favorable barrier effect of the spatial network structure of the protein-polysaccharide compound are combined, so that the problems that the sunflower seed sauce is easy to separate oil, oxidize and discolor are effectively solved.

The present application relates to the cosmetic technical field, especially to a kind of water-based composition containing phenethyl resorcinol and preparation method and application, the preparation raw material of the water-based composition includes: phenethyl resorcinol nano-encapsulated body, oil, water, the mass ratio of the water and oil is (4-15):1.The present application creatively uses water-oil double-layer system to solve the discoloration problem of phenethyl resorcinol, reduces the discoloration risk of phenethyl resorcinol while skin feeling is promoted and appearance is innovated, effectively solves the problem of instability of phenethyl resorcinol in aqueous system, and reduces the irritability of phenethyl resorcinol to skin.

The present application relates to a kind of high-stable pyrylium alcohol derivatives with light protection, whitening activity and its preparation method and application.The present application is based on the molecular structure of pyrylium alcohol and is connected with different cinnamic acid side chain, obtains a series of cinnamic acid side chain modified pyrylium alcohol derivatives.The pyrylium alcohol derivatives of the present application can effectively improve the chemical stability of pyrylium alcohol, effectively solve the discoloration and inactivation problem of pyrylium alcohol in cosmetic formula.The pyrylium alcohol derivatives of the present application have excellent chemical stability, have the ability of rapid oxidation resistance, and can realize precise synergistic effect at cell level, the activity of inhibiting melanin, antioxidant and light protection in organism is significantly better than pyrylium alcohol.The pyrylium alcohol derivatives of the present application have higher fat solubility and lower effective concentration, can be used for preparing whitening, antioxidant, light protection and other cosmetics, and have important market value.

The invention relates to the technical field of pharmaceutical preparations, in particular to a levocarnitine oral solution and a preparation method thereof, and every 100 ml of the levocarnitine oral solution comprises 10 g of levocarnitine, 5-15 g of polyvinyl alcohol and 0.5-1.5 g of an edetic acid stabilizer. The levocarnitine oral solution also contains a buffering agent which enables the pH value of the levocarnitine oral solution to be 4.5-5.5, and the balance of water. The polyvinyl alcohol is at least one of 03-88 parts of polyvinyl alcohol, 05-88 parts of polyvinyl alcohol and 24-88 parts of polyvinyl alcohol. The edetic acid stabilizer is edetic acid or edetate salt. The polyvinyl alcohol and the edetic acid stabilizer are synergistically used and are matched with the specific buffer agent to achieve a stable pH value, so that levocarnitine is uniformly dispersed and has good stability, dextrocarnitine is not generated, the limit of dextrocarnitine is strictly controlled, and the product is stable in quality, safe and effective.

The invention relates to matte varnish for high-grade veneer automotive interiors and application of the matte varnish. The coating is prepared from the following raw materials: acrylic resin, polyester resin, polyisocyanate, a delustering agent, a directional auxiliary agent, an ultraviolet light absorber and the like. According to the invention, acrylic resin is used as matrix resin and does not contain benzene substances, so that the coating does not cause harm to the health of a user; the polyester resin is added to improve the toughness of the paint film and improve the matching performance with the base paint; polyisocyanate is added to cure the paint film; by adding the delustering agent, the gloss of the varnish film is adjusted to be matte, and the transparency of the varnish film is ensured; the ultraviolet absorbents with the absorbing and shielding functions aiming at different nanometer wave bands are added, most of 290-349 nanometer light waves are absorbed and shielded, and the problem that natural wood veneers and technical wood are prone to discoloring is solved; all the raw materials do not contain benzene substances, the paint and the coating have the characteristics of no toxicity and environmental protection, and the targeted ultraviolet shielding function protects a workpiece from discoloration and gloss loss.

The utility model belongs to the technical field of explosion venting plates, and particularly relates to an aluminum-magnesium-manganese plate structure of an explosion venting plate, which comprises a fireproof explosion venting plate body and a mounting component arranged on the surface of the fireproof explosion venting plate body. The installation assembly comprises an aluminum-magnesium-manganese containing box arranged below the fireproof explosion venting plate body and an aluminum-magnesium-manganese covering box arranged on the surface of the aluminum-magnesium-manganese containing box in a sleeving mode, and the fireproof explosion venting plate body is arranged in the aluminum-magnesium-manganese containing box. An L-shaped plate is inserted into a groove formed by the fireproof explosion venting plate body and the aluminum-magnesium-manganese containing box; the fireproof explosion venting plate body is wrapped and assembled through the aluminum-magnesium-manganese plate made of the aluminum-magnesium-manganese alloy, the problem that the outer surface layer of metal is prone to rusting and color changing is solved, the service life of the explosion venting plate is prolonged, strong glue does not need to be used for bonding connection in the explosion venting plate assembling process, and therefore the explosion venting plate is more environmentally friendly.

The invention relates to yellowing-resistant light-color PVC (polyvinyl chloride) sponge composite leather which comprises the following components in parts by weight: 100-200 parts of PVC resin, 50-100 parts of a plasticizer, 5-10 parts of a stabilizer, 1-5 parts of an anti-amine agent, 5-10 parts of a PVC modified surface treatment agent, 1-5 parts of an amine molecule trapping agent and 1-2 parts of a strong oxidant. According to the invention, the problem of color change of the common PVC polyurethane sponge composite leather is effectively solved.

The utility model relates to a kind of general high-power LED lighting module, the module includes phase-change radiator, light source assembly and cable, light source assembly is fixed on the light source fixed plate of phase-change radiator, cable is connected with the light source in light source assembly;The phase-change heat conduction cavity of phase-change radiator is blocked by light source fixed plate in one end, and is blocked by upper cover in other end;Phase-change radiator's right side of guide body has cable channel;As the heat bridge of cable channel outside enclosure contour, water outlet is formed by structural dislocation with light source fixed plate.The utility model can prevent cable channel ponding, overall structure is simple, easy to assemble, and low in cost.

The invention relates to a preparation method of a material, in particular to a preparation method of a packaging material. According to the invention, the problems of compatibility between brominated polystyrene and polystyrene and color change of polystyrene plastic caused by brominated polystyrene are solved by carrying out silicon dioxide wrapping on the flame retardant brominated polystyrene particles, and the fluidity of the polystyrene plastic is further ensured by grafting oleophylic groups.

The present invention belongs to the technical field of antibacterial composite materials, and relates to an antibacterial ABS composite material and a preparation method thereof. The modified aluminosilicate prepared by the hydrothermal method of the present invention can adjust the size and shape as required, has an extremely high specific surface area and a interconnected network microporous structure, can effectively fix the loaded silver ions, and slowly release the silver ions to achieve the purpose of long-term effective antibacterial, and solves the problem of silver ion discoloration; the preparation of the modified silver-loaded aluminosilicate by the present invention is simpler to operate and has a higher loading rate than the common gas reduction, high-temperature reflux and other processes; the antibacterial ABS composite material prepared by the present invention has good antibacterial agent particle dispersion effect, good antibacterial effect, long effective time, and excellent mechanical properties.

The application discloses a kind of LLZTO / PVDF composite solid electrolyte membrane modified by surface organic layer and preparation method and application thereof, the LLZTO / PVDF composite solid electrolyte membrane is made of LLZTO, PVDF and lithium salt, the lithium salt includes LiTFSI and LiDFOB;The surface of the LLZTO is formed with organic modification layer;The organic modification layer at least includes the passivation layer formed by the reaction of GA and LLZTO surface residual basic component, and the polyether type flexible conductive layer formed by DOL at interface.This application uses LLZTO as inorganic filler, PVDF as polymer matrix, uses LiTFSI and LiDFOB as lithium salt, by introducing GA and DOL to the surface of LLZTO in situ organic layer modification, to inhibit its basicity induced decomposition to PVDF, improve inorganic / organic interface compatibility, and improve the mechanical properties and ionic conduction performance of composite membrane.

The invention discloses an industrial preparation process of an optical-grade fluoride salt product, and relates to the technical field of fluoride salt products, and the industrial preparation process comprises the following steps: (1) obtaining a chloride salt solution; (2) obtaining an intermediate reaction solution; (3) obtaining a sodium fluoborate solution; (4) obtaining a mixed solution; (5) obtaining a reaction system; (6) obtaining a primary reaction material; (7) carrying out modification treatment on the primary reaction material to obtain an optical-grade fluoride salt product; the prepared optical-grade fluoride salt product can be applied to optical glass, and the stability performance of the optical glass can be greatly improved.