230 results about "Iodine compounds" patented technology

The invention discloses a medical super-lubricity antibacterial catheter coating liquid. The coating liquid consists of lubricating liquid and antibacterial substance, wherein the lubricating liquid is prepared through dissolving hydrophilic polymer in organic solvent and adding adhesive polymer at the same time; and the antibacterial substance consists of nano-silver or other nano materials, iodine or iodine compounds, chitin or chitosan and derivatives thereof. The coating liquid is directly soaked or sprayed on a catheter surface through one step when being used, and after solidification, a medical super-lubricity antibacterial catheter is prepared. The coating liquid has double effects of super lubricity and antibiosis, the coating liquid preparation and a coating method are simple, and the coating liquid is easy for mass production. The coated product has strong lubricity, and the coating liquid has an antibacterial function and no drug resistance and can prevent various bacteria and fungi infections and related complications from being generated. The medical super-lubricity antibacterial catheter coating liquid is suitable for the medical field and has good popularization and use values.

Calibration and reference samples with reduced cross-sectional areas encased within imaging tables or couch pads have low attenuation properties and provide patient comfort. The samples are stable and provide reproducible images without artifacts. The torso-length samples avoid positioning errors and misalignment. Sample density or mass calibration materials include calcium compounds representative of bone and calcifications, iodine compounds for contrast angiography, gadolinium compounds for MRI, and fat and tissue equivalent materials. Density corrections for variable patient scatter and imperfect image reconstructions improve quantitative measurement. Automated computer methods detect the samples and record readings on all images over the extent of the scans without operator interaction. Spatial references function as location references and enable spatial correction of device imperfections such as point spread function (PSF) or motion for improved images. Comparative analysis of backward and forward projections corrects images based on simultaneous imaging of the references of known properties.

There is provided a method of forming a thin film of vinylidene fluoride homopolymer having crystal form I which is applicable to various substrates in relatively easy way (coating conditions, application method, etc.), a process for preparing a vinylidene fluoride homopolymer having crystal form I efficiently at high purity, and novel vinylidene fluoride homopolymers which can give a thin film being excellent in ferroelectricity. The method of forming a thin film of vinylidene fluoride homopolymer comprises (i) a step for preparing a green powder product of vinylidene fluoride homopolymer comprising crystal form I alone or as main component by subjecting vinylidene fluoride to radical polymerization in the presence of a bromine compound or iodine compound having 1 to 20 carbon atoms which contains at least one moiety represented by —CRf¹Rf²X¹, wherein X¹ is iodine atom or bromine atom; Rf¹ and Rf² are the same or different and each is selected from fluorine atom or perfluoroalkyl groups having 1 to 5 carbon atoms and (ii) a step for forming a thin film on a substrate surface by using vinylidene fluoride homopolymer which comprises crystal form I alone or as main component and is obtained from the green powder product of vinylidene fluoride homopolymer comprising crystal form I alone or as main component.

A radiographic contrast medium is disclosed, comprising a liposome which is comprised of vesicles including a water- and soluble nonionic iodine compound, and the contrast medium containing substantially no chlorinated solvent. There is also disclosed a method of preparing the radiographic contrast medium using supercritical or subcritical carbon dioxide.

The invention discloses gynecologic gel with antibacterial restoration activity and a preparation method thereof. The gynecologic gel is polyamino polysaccharide polypeptide complex iodine compound bioactive glass gel which is formed by taking a chitosan iodine solution and a bioactive glass as main active components, carbomer and sodium alginate as adhesives and gelatin as a shaping agent and has an antibacterial restoration function, wherein the chitosan iodine can not only kill pathogen by providing free iodine, but also promote the healing of a wound tissue part, the bioactive glass is permeated through the soakage of a human body fluid, and the surface activity of the bioactive glass can promote the generation of a growth factor positioned on the wound tissue part and promote cell proliferation after contacting with a wound tissue. The gynecologic gel disclosed by the invention can not only kill the pathogen by providing the free iodine, but also promote the healing of the wound tissue part, has good biocompatibility and is plastic gel which can be used for treating gynecological inflammation and has antibacterial restoration activity. The preparation method disclosed by the invention is simple, convenient and suitable for industrialized production.

Provided is a medical part with excellent antibiotic properties and antibiotic substantivity as well as high biocompatibility, and a manufacturing method therefor. After an anodic oxidation treatment, wherein a pulsed current with a frequency of 50 to 10,000 Hz is applied for an electrolytic treatment, is applied to a base material in an acidic electrolytic bath or an alkaline electrolytic bath so as to form a film, which has minute holes and/or minute protrusions and recesses preferably in the quantity of 5 x 104/mm2 or more on the surface of the base material, an iodine-impregnation treatment is applied so as to impregnate iodine or an iodine compound into said film. Polyvinyl pyrrolidone iodine, ss-cyclodextrin iodine, or silver iodine is desirable for the iodine compound. Furthermore, a biocompatible metallic material selected from Ti, Ti alloy, stainless steel, and Co-Cr alloy is desirable for the base material. The film may be formed by means of a chemical treatment, a thermal treatment, or a machining process, or a combination of these, instead of the anodic oxidation treatment. Thus, a medical part with excellent antibiotic properties and antibiotic substantivity as well as high biocompatibility can be manufactured easily and inexpensively.

A process for forming an aryl-aryl bond comprises the step of reacting an arene hydrocarbon compound with either (1) an organic oxidant selected from the group consisting of a quinone, a quinone imine, a quinone diimine, and a nitroarene, or (2) an oxidizing salt selected from the group consisting of a triarylaminium salt, an oxonium salt, and a nitrosium salt, or (3) a hypervalent iodine compound, each in the presence of a Brönsted or Lewis acid.

A composition for use in bone healing and bone regeneration in the form of a viscoelastic hydrogel gel or liquid formulation comprising fibrinogen, thrombin and an inorganic component comprising a strontium (Sr) containing compound and/or possibly another metal such as a calcium containing compound. The strontium containing compound can be dissolved in the thrombin solutions or added to the clot in crystalline particulate form. Upon mixing the components, gelation takes place to form a matrix. The composition may also comprise an iodine-containing compound which acts as a plasticizer.

A polishing composition contains silica abrasive grains and an iodine compound. The silica abrasive grains exhibit a negative zeta potential in the polishing composition. The silica abrasive grains have an average primary particle size of 30 nm or smaller, and the polishing composition has a pH of 4 or lower. The polishing composition is suitable for polishing a polysilicon film and a silicon nitride film.

Applicants have discovered that cyclic and acyclic ketone acids, such as dehydroacetic acid, and salts thereof as well as an aromatic carboxylic acid and salts thereof enhance the performance of iodine containing biocides as antimicrobial agents and preservatives. The present invention provides a composition comprising (a) an iodine containing biocide; and (b) (i) a ketone acid or salt thereof, (ii) an aromatic carboxylic acid or a salt thereof, or (iii) a mixture thereof. Preferably, the ketone acid is a cyclic ketone acid and the aromatic carboxylic acid is salicylic acid.

The immersion oil has refractive index which is 1.70 or more, and is low autofluorescence. Preferably, the main ingredient is iodine compounds (diiodomethane), and a solid having a high refractive index such as sulfur and the like is dissolved or dispersed into the immersion oil. The production method of the immersion oil has a purification process, in which impurities are removed preferably by adsorbent, distillation or recrystallized. In the method of preservation of the immersion oil, it is always contacted with the adsorbent. The preservation container of the immersion oil contains an adsorbent which is always contacted with the immersion oil.

To provide a fluorinated elastic copolymer having high crosslinkability, having high flowability and excellent in the compression set and the resistance to bases, and its production process.

A process for producing a fluorinated elastic copolymer, which comprises copolymerizing (a) tetrafluoroethylene and (b) propylene and as the case requires, (c) a perfluoro(alkyl vinyl ether) in the presence of an iodine compound represented by the formula RI₂ (wherein R is a hydrocarbon group or perfluoroalkyl group having at least 3 carbon atoms) at a temperature of from 0° C. to 50° C., and a fluorinated elastic copolymer obtained by the production process.

A system (100) of the present invention for producing an iodine compound includes: a raw material adjusting unit (1) for supplying hydrogen-containing gas to at least one of liquid iodine in an iodine melting pot (4) and gaseous iodine obtained by evaporating liquid iodine so as to obtain a mixture gas; a hydrogen iodide producing unit (10) including a hydrogen iodide producing tower (12) having a catalyst layer (12a) for converting the introduced mixture gas into crude hydrogen iodide gas; a hydrogen iodide refining unit for removing unreacted iodine from the introduced crude hydrogen iodide gas so as to obtain hydrogen iodide gas; and an iodine compound producing unit (30) for producing a target iodine compound from the obtained hydrogen iodide gas and a reaction material. This allows producing an iodine compound with high purity easily, efficiently, and with low cost.

The invention discloses a novel method for directly synthesizing asymmetric disubstituted urea compounds. The method comprises the step of adding a palladium catalyst into a solvent polyethylene glycol or a polyethylene glycol water solution under the action of alkali, an iodine compound and an oxidant so as to catalyze direct cross coupling reaction of primary amine and carbon monoxide, so as to prepare the asymmetric disubstituted urea compounds. The method for preparing the asymmetric disubstituted urea compounds through the coupling reaction has the advantages that the catalyst is wide in source and environment-friendly; a substrate is wide in source, cheap and easy to process; a carbonyl is stable in source and cheap and does not generate waste; a ligand is not required in the reaction, and the reaction activity is good; reaction conditions are mild, and the reaction selectivity is high; the substrate has good functional group consistency and is wide in application range; and a reaction medium is environment-friendly and can be circularly recycled. The separation yield of a target product can reach up to about 97% under optimized reaction conditions.

The invention discloses a preparing method for a C-3 position sulfoimidazo[1,2-a] pyridine compound. The preparing method includes the step that an imidazo[1,2-a] pyridine compound and a sulfohydrazide compound serving as raw materials, tert-butyl hydroperoxide serving as an oxidizing agent, acetonitrile serving as solvent, and an iodine compound serving as a catalyst react at the reaction temperature of 60 DEG C-120 DEG C to obtain the C-3 position sulfoimidazo[1,2-a] pyridine compound. Compared with a traditional synthetic method, the preparing method has the advantages that reaction conditions are moderate, environment pollution is little, reaction smells are small, the yield is high, functional group compatibility is high, and separation and purification are convenient.

The invention discloses a preparation method of ZnI2-I/ZnO composite with photocatalytic antibacterial function and belongs to the technical field of synthesis of materials. The preparation method comprises: adding a certain ratio of iodine compound solution into zinc nitrate or zinc acetate as a main material, using mixed solution of alcohol and water as a reaction solvent, and performing solvothermal reflux process to obtain the ZnI2-I/ZnO composite photocatalytic material with high antibacterial activity. ZnI2 and I2 are grown on the surface of ZnO through in-situ growth; the method is simple and feasible, the raw materials are low in price and easy to obtain, and equipment and technical process are simple and easy to perform; the method has the advantages of low reagent pollution, good reaction repeatability, mild preparation conditions and the like. The prepared ZnI2-I/ZnO composite has good antibacterial and sterilizing properties in photocatalytic antibacterial process, and has good performance stability and good repeatability.

The invention relates to a method for preparing quaternized chitosan nano iodine disinfectant, and hydroxy or amino of chitosan or chitosan with low molecular weight are respectively connected with quaternary ammonium salt monomers, and a quaternized chitosan derivative or a quaternized chitosan derivative with low molecular weight is prepared, and the original biological activity of chitosan is still maintained in the derivative, and simultaneously solubilities of the product in water and other solvents are increased; the quaternized chitosan derivative or quaternized chitosan derivative with low molecular weight are reacted with iodine for generating chitosan group nano iodine compound or low molecular weight chitosan group nano iodine compound, and the chitosan group nano iodine disinfectant or low molecular weight chitosan group nano iodine disinfectant is prepared by dissolving in solvent. Compared with the prior art, the iodine has good dispersibility and stability in the invention, and because of surface effect and subsize effect of chitosan group nano iodine, bacteriostasis, antiviral activity and continuity of the product are improved, and effective utilization rate of iodine is increased.

The invention relates to 2-(1,2,4-triazole-1-methyl)-2-(coumarone-5-radical)-1,3-dioxolane with a chemical formula I shown in the description, where R is selected from C1-C2 alkyl radical and C3-C4 linear alkyl radical or branched alkyl radical, R1 selected from H and C1-C2 alkyl radical, X selected from chlorine,bromine,iodine, mesyloxy,trifluoro-mesyloxy, benzenesulfonyl oxy radical, and p-toluenesulfonyl oxy radical, and Y selected from hydrogen, C1-C2 alkoxy, C3-C4 linear alkoxy or branched alkoxy, chlorine, bromine, fluorine or iodine. The chemical formula I is prepared from a key intermediate II of a chemical formula II shown in the description; and a compound I can be applied to preparation of bactericide.

The invention belongs to the technical field of perovskite absorption materials, and discloses a two-dimensional perovskite light absorption material and a preparation method thereof. The molecular formula is (BEA)0.5(M)nPbnI3n+1. The preparation method comprises the following steps: (1) stirring 1,4-butanediamine and hydroiodic acid with the mass content of 50% to 60% according to a chemical metering molar ratio at room temperature for a reaction for 2 to 3 h to obtain a 1,4-butanediamine iodine solution; (2) synthesizing a (BEA)0.5(M)nPbnI3n+1 single crystal material: after mixing lead acetate, hydroiodic acid with the mass content of 50% to 60% and a hypophosphorous acid water solution with the mass content of 50% to 55%, stirring to form a uniform solution, controlling the temperatureat 60 to 80 DEG C for a stirring reaction for 1 to 2 h; then adding an iodine compound into the solution, then dropwise adding 1,4-butanediamine iodine solution, controlling the temperature at 100 to130 DEG C after dropwise adding is finished for a stirring reaction for 1 to 2 h; and finally washing and filtering to obtain the two-dimensional perovskite light absorption material. The prepared two-dimensional perovskite light absorption material is taken as a light absorption layer of a perovskite solar cell, and the corresponding solar cell has extremely high efficiency, and also has extremely high stability.

A method for rendering tissue transparent, comprising a procedure of immersing the tissue in a water-soluble solvent comprising 2,2′-thiodiethanol and at least one of glycerol and a nonionic organoiodine compound is provided as a technique capable of sufficiently rendering various organs transparent without causing their changes by a simple operation without using any poisonous or dangerous organic solvent. In the method for rendering tissue transparent, a mixed solvent of 2,2′-thiodiethanol, glycerol, and a nonionic organoiodine compound aqueous solution is preferably used as the water-soluble solvent.