5 results about "MENTHOL CRYSTALS" patented technology

This invention discloses a low-loss, high-yield extraction method for natural menthol, belonging to the field of menthol production technology. It addresses the technical problem of insufficient extraction yield and loss rate in existing natural menthol extraction processes, requiring further optimization. The method specifically includes the following steps: adding menthol extraction mother liquor to a crystallization vessel and stirring; slowly adding sodium chloride aqueous solution; maintaining the crystallization vessel in an ice bath at 0-5°C; allowing it to stand for 2-4 hours; and then post-processing to obtain natural menthol crystals. This invention synergistically extracts menthol with a modified polymer eutectic solvent and modified cyclodextrin in an aqueous phase with pulverized mint leaves to obtain an extraction mother liquor. Sodium chloride is added, and a low-temperature induced supramolecular system is used to destabilize the liquor, causing menthol to crystallize in a specific direction, resulting in natural menthol crystals. This achieves a synergistic unity of low volatility loss, efficient solubilization and transfer, and directional crystallization separation during the extraction process, significantly improving the extraction yield of the target product.

This invention discloses a method for preparing and using a solid fragrance. The preparation method includes the following steps: ① Encapsulation: Cyclodextrin is dissolved in water to form a cyclodextrin solution, and fragrance is added dropwise to the cyclodextrin solution to obtain an inclusion solution; ② Drying and pulverizing: The moisture in the inclusion solution is removed by spray drying and / or freeze drying to obtain powdered fragrance powder; ③ Powder refining: The powder raw material is crushed using an ultrafine pulverizer to obtain ultrafine powder of 200-500 mesh; the powder raw material includes powdered fragrance powder; the powder raw material also includes one or more of traditional Chinese medicine powder and color powder; ④ Mixing: Menthol crystals are used as a carrier to mix with the ultrafine powder to obtain a solid fragrance, wherein the mass ratio of menthol to ultrafine powder is 100:0.01-0.05. Compared with the prior art, this invention is safe, stable, and multifunctional.

This application relates to the field of cultural relic restoration, specifically disclosing a method for sealing inscriptions on cultural relics during restoration. The method includes the following steps: heating menthol crystals until completely melted to obtain a menthol melt; then applying the menthol melt to the inscriptions to be sealed; and finally, after the menthol melt cools and solidifies, the sealing is complete. This method utilizes menthol crystals instead of cyclododecane, effectively sealing the inscriptions on cultural relics. The sealed inscriptions exhibit significant water resistance, do not diffuse upon contact with water, and improve the tensile strength of the simulated archival paper after restoration and mounting. Simultaneously, it has no negative impact on paper fibers, and leaves no residual new chemical substances on the paper.

The purpose of the present invention is to provide an aqueous patch in which basic physical properties as an aqueous patch are less likely to deteriorate and crystals of 1-menthol are less likely to precipitate. The aqueous patch includes, in a pasty preparation, 1-menthol: 0.5% by mass or more and 10% by mass or less, an oil component: 0.2% by mass or more and 19% by mass or less; and silica: 0.1% by mass or more and 5.5% by mass or less.

To provide a method for suppressing crystal deposition of l-menthol in a cataplasm.SOLUTION: A method for manufacturing a cataplasm equipped with a support layer, an adhesive layer laminated on the support layer, and a release liner provided on an opposite face of the support layer with respect to the adhesive layer includes the steps of: obtaining an adhesive composition containing drug, water, gelatin, l-menthol, methyl acrylate-2-ethylhexyl acrylate copolymer resin emulsion and magnesium aluminometasilicate; and spreading the adhesive composition on the release liner or the support layer, and laminating the support layer or the release liner on the composition, wherein a content of methyl acrylate-2-ethylhexyl acrylate copolymer resin emulsion is 1.5 mass% to 20 mass%, a content of magnesium aluminometasilicate is 0.25 mass% to 0.45 mass%, and a content of gelatin is 1 mass% to 3 mass%, based on the total mass of the adhesive layer.SELECTED DRAWING: None