5results about How to "Solve discoloration" patented technology

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 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 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 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.