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972 results about "Eugenol" patented technology

Eugenol /ˈjuːdʒɪnɒl/ is an allyl chain-substituted guaiacol, a member of the allylbenzene class of chemical compounds. It is a colorless to pale yellow, aromatic oily liquid extracted from certain essential oils especially from clove oil, nutmeg, cinnamon, basil and bay leaf. It is present in concentrations of 80–90% in clove bud oil and at 82–88% in clove leaf oil. Eugenol has a pleasant, spicy, clove-like scent. The name is derived from Eugenia caryophyllata, the former Linnean nomenclature term for cloves. The current Linnean nomenclature term for cloves is Syzygium aromaticum.

Anti bacterial anti mite fiber and preparation method thereof

The invention relates to an anti bacterial anti mite fiber and preparation method thereof, the anti bacterial anti mite fiber is prepared by adding through a polymer an organic anti mite agent eugenol and / or ISO eugenol formulated with an inorganic anti bacterial agent zinc oxide and preparing into an anti bacterial anti mite agent, after melting, and spinning and being prepared. The method works by firstly mixing the organic anti mite agent eugenol and / or ISO eugenol with the inorganic anti bacterial agent zinc oxide, after refining with a ball crusher, and sieving to obtain a formulated anti bacterial anti mite powder material, then using a surface treatment agent to surface coat the formulated anti bacterial anti mite powder material; then adopting a direct append method, the surface coated and formulated anti bacterial anti mite powder material being evenly mixed with a polymer, after melting, and spinning to prepare into the anti bacterial anti mite fiber; or adopting a masterbatch method, the surface coated and formulated anti bacterial anti mite powder material being melted with a polymer and mixed together to prepare into an anti bacterial anti mite master batch, then the anti bacterial anti mite master batch being evenly mixed with a polymer, after melting, and spinning to prepare into a fiber with a long period anti bacterial anti mite effect.
Owner:SOUTH CHINA UNIV OF TECH +1

Natural anti-staling agent suitable for storage and fresh keeping of mangos and preparation method thereof

The invention relates to a natural anti-staling agent suitable for the storage and the fresh keeping of mangos and a preparation method thereof. The natural anti-staling agent consists of eugenol or clove oil, methyl jasmonate, CaCL2, a solvent, water and a surfactant, wherein the mass volume ratio of the eugenol or the clove oil to the methyl jasmonate to the CaCL2 to the solvent to the surfactant to the water is 5-20:0.5-2.0:0.5-2.0:10-30:0.1-0.4:70-230. The preparation method comprises the following steps of: dissolving the methyl jasmonate in an organic solvent at the room temperature or in a water bath between 25 and 35 DEG C to prepare a methyl jasmonate solution; adding a proper quantity of the eugenol or the clove oil into the methyl jasmonate solution, and stirring and mixing the mixture evenly; then adding the CaCL2 into a small amount of the water until the CaCL2 is dissolved completely; adding the surfactant into water to prepare an emulsion of which the volume ratio is 0.5 to 1.0 percent; and finally, adding the emulsion into the methyl jasmonate solution added with the eugenol or the clove oil and into the CaCL2 solution to 100 percent, and mixing the two solutions to obtain the natural anti-staling agent. The natural anti-staling agent has the functions of fresh keeping and sterilization at the same time, and the mangos treated by the natural anti-staling agent has obviously relieved diseases, and the product appearance and the quality are obviously improved.
Owner:SOUTH SUBTROPICAL CROPS RES INST CHINESE ACAD OF TROPICAL AGRI SCI

Dyhydroxyl cage-type silsesquioxane monomer and preparation method thereof

The invention discloses a dyhydroxyl cage-type silsesquioxane monomer and a preparation method thereof and belongs to the technical field of preparation of silsesquioxane. The preparation method of the dyhydroxyl cage-type silsesquioxane monomer comprises the following steps of: adding dyhydroxyl cage-type silsesquioxane monomer and eugenol monomer in a nitrogen-gas protected container, wherein the feeding molar ratio of the two monomers is 1:(2-16); adding toluene as a solvent, dropwise adding Pt with mass percentage of 0.3% and Custer reagent which is 0.1% (volume percentage) of solvent as a catalyst; heating up to 65-110 DEG C for reacting for 6-36 hours at a constant temperature; cooling the reaction system to the room temperature and distilling the reaction mixed liquor at 80-110 DEG C under reduced pressure to remove un-reacted eugenol; and cooling the room temperature to obtain light yellow solid, namely the dyhydroxyl cage-type silsesquioxane monomer. By overcoming the defects that the prior art is complex in operations and low in safe, the preparation method is simple in process and pollution-free to the environment. Besides, the preparation method has an important meaning in synthesizing dyhydroxyl POSS (Polyhedral Oligomeric Silsesquioxane); and the POSS can be directly introduced to a linear chain of the polymer.
Owner:JILIN UNIV

Bio-based epoxy resin composition and application thereof in preparing epoxy resin film

The invention discloses a bio-based epoxy resin composition. The bio-based epoxy resin composition comprises the following raw materials: 100 parts of bio-based epoxy resin and 5 to 50 parts of a curing agent; and the structural general formula of the bio-based epoxy resin is shown in the following formula. In the formula, x is an integer selected from 1 to 5, R1 to R4 are independently selected from a phenyl, a vinyl group, and an alkyl group having 1 to 10 carbon numbers. The bio-based epoxy resin is siloxane chain segment-containing eugenol bio-based epoxy resin, and main reaction functional groups are eugenol epoxy groups, and siloxane chain segments are introduced in a molecular skeleton, thereby being capable of greatly reducing the viscosity of the system and improving the processing fluidity, siloxane in macromolecular volume can further greatly improve dielectric properties and reduce dielectric constants, and has intrinsic flame retardant properties. The epoxy resin composition taking siloxane as a substrate can realize intrinsic flame retardation without adding a flame retardant, and the epoxy resin film prepared by using the composition has outstanding flame retardancy,adhesive properties and bending strength, and further is high in dielectric strength.
Owner:江苏和和新材料股份有限公司
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