30 results about "Iodoform" patented technology

The invention relates to a preparation method of ferrocenecarboxylic acid, comprising the following steps of: firstly, adding polyethylene glycol, iodine-potassium iodide and acetylferrocene into an aqueous alkali with uniformly stirring, wherein the acetylferrocene undergoes an iodoform reaction to form ferrocene carboxylic acid salt dissolved in a non-organic phase; secondly, extracting the solution obtained from the reaction of the first step by the use of an organic solvent, adjusting the pH value of a water phase to 2-3 by the use of strong acid to change sodium ferrocene carboxylic acid into ferrocenecarboxylic acid precipitated from the water phase. According to the invention, non-organic aqueous alkali is used as a solvent to prepare ferrocenecarboxylic acid. The preparation method provided by the invention is easy to control. During the process, the mild reaction is carried out in a solution with the reaction temperature being from zero to 5 DEG C for a short time; ferrocenecarboxylic acid can be produced only within 2 hours. The used raw materials are commonly sold in the market and are cheap. The yield of the product in the invention can reach more than 85% by optimum technology.

The invention discloses an iodoform solution used for dressing, an iodoform dressing and a preparation method of the iodoform dressing. The iodoform solution disclosed by the invention contains 50-98 parts by weight of water, 0.5-5 parts by weight of iodoform, 0.1-5 parts by weight of water retaining agent and 2-50 parts by weight of polyethylene glycol and does not contain diethyl ether. The iodoform solution disclosed by the invention has the advantages that polyethylene glycol is adopted for replacing diethyl ether, and potential threats of diethyl ether and harm of the diethyl ether to a human body are avoided; water is taken as a solvent, so that cost of the iodoform solution is reduced; and the iodoform solution hardly volatilizes, so that the prepared iodoform dressing is long in guarantee period and is easy to preserve.

The invention discloses a preparation method of a monoatomic catalyst for indoor air purification. The preparation method comprises the following steps of (a) performing preparation to obtain a yellow solid powder CeO2 carrier; (b) dissolving RuCl3.3H2O into deionized water to obtain dipping liquid, wherein the mass concentration of ruthenium in the dipping liquid is 5 to 50 mg / mL; and (c) preparing the monoatomic catalyst: adding the CeO2 carrier obtained by the step (a) into the dipping liquid obtained by the step (b) by a dipping method, adding an iodoform solution dissolved into glycol, mixing uniformly, dipping, drying the dipped solution on a rotary evaporator and calcining to finally obtain the monoatomic catalyst Ru / CeO2. By the method, the general catalytic reaction dosage (the load capacity is very low) is extremely small, and the atom utilization rate is extremely high.

The invention discloses an externally-used medicine for treating grease-heel of equus animals; the externally-used medicine comprises the components in parts by weight: 6-10 parts of salicylic acid powder, 1-3 parts of iodoform, 3-7 parts of sulfanilamide powder, 2-6 parts of dried alum, 2-6 parts of calcined gypsum, 8-12 parts of rheum officinale, 8-12 parts of olibanum, 8-12 parts of myrrh and 15-25 parts of 10% of ichthammol ointment; and the externally-used medicine is prepared by extracting the rheum officinale, the olibanum and the myrrh by alcohol, removing the alcohol and concentrating, and mixing the obtained matter with other medicines to obtain an ointment extract. The externally-used medicine is organically combined, is dialectical in compatibility of medicines and enables the medicines to supplement one another, and the effects of preventing corrosion, absorbing moisture, regenerating tissue to heal wounds, sterilizing and itching reliving are improved, so that the aim of curing can be achieved. The externally-used medicine for treating the grease-heel of the equus animals is low in cost, easy to prepare, free from toxic and side effects and remarkable in treatment effect. A feasible new medicine is provided for clinic treatment. The clinical practice proves that the cure rate by using the externally-used medicine is 94.44%, and the effective rate of the externally-used medicine is 100%.

The present invention relates to inorganic sterilizing chemicals. The aqueous solution of atomic iodine consists of iodine in 0.5-30 wt%, cosolvent cyclodextrin derivative and water. It is compounded through preparation of ethanol alcohol solution of iodine and saturated water solution of cyclodextrin derivative at 35-70 deg.c, mixing, and diluting with water to the said iodine content. The macro molecule of cyclodextrin as cosolvent can raise the solution degree of iodine, convert insoluble iodine into water soluble micron level iodine and thus increase the stability of medicine. The present invnetion has strong sterilization, no irritation to skin, mucous membrane and other sensitive parts and no toxic side effect, and is used as substitute of iodine tincture and iodoform.

The invention discloses a precious metal leaching agent and a method for recovering precious metals in spent catalysts. The precious metal leaching agent is composed of ionic liquid, iodoform and solvent, wherein the mass ratio of ionic liquid to iodoform is 30:1~5:1; the volume ratio of solvent to ionic liquid is 10:1~1:1; the described The anion of the ionic liquid is one or more of chloride ion, bromide ion, iodide ion, thiocyanate ion, and bisnitrile amide ion, and the cation is one or more of imidazoles, pyrrolidines, quaternary ammonium salts, and quaternary phosphonium salts. one or more of. The precious metal leaching agent of the invention has the characteristics of economy, environmental protection and high efficiency. The invention provides a method for recovering precious metals from waste catalysts by using the precious metal leaching agent. The method has simple process flow, less waste by-product emissions, can effectively treat waste catalysts in a harmless manner and recover its precious metals, and realizes The recycling of waste resources reduces environmental pollution and improves social and economic benefits.

The invention discloses a method for purifying iodoform. The method is conducted in the dark and includes the following steps that a good solvent and a poor solvent for iodoform are evenly mixed; the prepared compound solvent is added into iodoform and stirred and dissolved at room temperature; the obtained mixed system is filtered at room temperature; the obtained filtrate is subjected to reduced pressure concentration; the obtained concentrated solution is cooled and crystallized; mother liquor is removed from the obtained crystallization solution, drying is conducted, and purified iodoform is obtained. Iodoform obtained through the method is stable in quality, the mass content is larger than 99.9%, the purification process is simple, safe, quick and efficient, the compound solvent in use can be recycled after treatment, the requirements for green chemical industry and environmental protection are met, and the method has prospects in industrial production.

The invention provides a calcium phosphate composite material for filling a root canal. The composite material consists of a solid-phase component and a liquid-phase component, wherein the solid-phase component is a mixture of calcium phosphate, magnesium oxide, soluble hydrophosphate and iodoform; and the liquid-phase component is an aqueous solution of sugar, hydrophosphate and citric acid. The invention also provides a method for preparing the composite material. In the composite material, the injection property and collapse resistance of the composite material can be improved by the gelation of the sugar in the liquid-phase component and the chelation of inorganic ions in the solid-phase component, the magnesium phosphate generated by a hydration reaction has relatively strong adhesive force, the bonding strength between the root filling material and the root canal wall can be promoted, and leakage is avoided; and the iodoform can be used for enhancing the X-ray opacity and diminish inflammation to improve the curative effect of root canal therapy.

This invention discloses a method for preparing a second-order nonlinear optical crystalline material, which comprises the steps of: mixing iodoform, sulfur powder and solvent carbon bisulfide in an airtight reactor, reacting at 60-80 deg.C for 20-35 h to obtain a solution of the second-order nonlinear optical crystalline material in carbon bisulfide, adding the solution into a glass container, and placing the glass container in a constant temperature cabinet for a certain time to obtain orange bulk single crystals. The method has such advantages as short reaction time, moderate experimental conditions, high product purity and simple operation. The crystalline material can be widely applied in optical field.

The invention relates to a lyotropic liquid crystal precursor for root canal disinfection and a preparation method thereof.The lyotropic liquid crystal precursor is prepared from a carrier and a root canal disinfection medicine.The carrier is prepared from, by mass, 0.2-5 parts of a liquid crystal material, 1 part of a solvent and 0.1-4.5 parts of water.The mass fraction of the root canal disinfection medicine in the lyotropic liquid crystal precursor is 0.005-3%.The liquid crystal material is monoolein and / or phytantriol; the solvent is the mixture of one or more of absolute ethyl alcohol, N-methyl pyrrolidone, polyethylene glycol and propylene glycol; the root canal disinfection medicine is the mixture of one or more chlorhexidine acetate, chlorhexidine gluconate, chlorhexidine hydrochloride, nano silver, calcium hydroxide, metronidazole, tinidazole, ornidazole, iodoform and gallnuts.The lyotropic liquid crystal precursor is good in liquidity, and capable of being injected and entering a lateral root canal easily and eliminating a root canal disinfection blind area and has the effective and lasting root canal disinfection effect.