48 results about "Cyclododecane" patented technology

The invention discloses a flame-proof polyolefin resin component and preparing method in the resin flame resistant modifying domain, which comprises the following parts: a. 9-20% bromine fire retardant with decabran diphenyl ethane or octabromobium ether and heat-stability hexabromide cyclododecane with weight rate at 2: 1-1: 2, b. 3-8% synergic fire retardant with antimony trioxide, c. 3-12% melt resistant melt drip agent with one or more of organic montmorillonite, kaolin and clay.

The invention discloses an application of a volatile matter as a tomb mural removing material and removing and restoration processes. The removing material is cyclododecane, menthol, or mixture of cyclododecane and menthol. The removing process includes determining a parting line to make a mural clamping board, pasting a fabric, coating the removing material, cutting pictures and removing. The restoration process includes cleaning the back of a mural, reinforcing the back, pasting a non-woven fabric, removing the removing materials, pasting a fabric, pasting paper, reinforcing pictures, bonding a support, cleaning and finishing the pictures, filling missing parts and completing the pictures, sealing and protecting, adding a label to the back of the support, and displaying and preserving. The removing material is novel, simple in process, convenient, rapid, timesaving and laborsaving, has quite high universality and practicality, and particularly has extremely important significance to salvage and protection of tomb murals poor in unearthed situations.

The invention discloses a preparation method of a cationic type fluorine-containing soap-free emulsion. The preparation method comprises the steps: using azodiisobutyronitrile, 2-(dimethylamino)ethyl methacrylate, 1,4-dioxane, S-1-dodecyl-S'-(alpha,alpha''-dimethyl-alpha''-acetic acid)trithiocarbonate to prepare poly[2-(dimethylamino)ethyl methacrylate]; purifying poly[2-(dimethylamino)ethyl methacrylate] for two times with n-hexane, and drying to obtain a product after purification; dissolving the product after purification in diluted hydrochloric acid, and forming a mixed solution; preparing an amphiphilic block copolymer from the mixed solution, 2,2'-azobis[2-methylpropionamidine]dihydrochloride, a hexafluorobutyl acrylate agent and deionized water; and combining the prepared mixed monomer with the amphiphilic block copolymer and an initiator aqueous solution to prepare the cationic type fluorine-containing soap-free emulsion. The fluorine-containing soap-free emulsion obtained by the preparation method disclosed by the invention has the characteristics of good stability, small latex particle size, and core-shell structure.

The present invention discloses a hexabromocyclododecane production process capable of effectively improving product quality. Said process includes the following procedures: bromization procedure, filter and centrifugal drying procedure, washing procedure, boiling procedure, drying procedure, powder-sieving procedure and solvent recovery procedure. It is characterized by that it adopts chloroform and isobutanol as medium, so that it can raise thermal stability of product. Said product is a good fire retarding agent, therefore it has extensive application.

Cyclododecanone (CDON) is prepared by epoxidizing cyclododecene (CDEN) to epoxycyclododecane (CDAN epoxide), and rearranging the CDAN epoxide to CDON to obtain a mixture comprising said CDON and cyclododecane (CDAN), wherein CDAN is separated from the CDON-containing mixture and oxidized to CDON.

Embodiments in accordance with the present invention relate generally to polycarbonate polymers having repeat units derived from polycyclic-epoxide monomers and methods of using such polymers and compositions containing them, and more specifically to polymers and compositions of polycarbonates that encompass repeat units derived from norbornane and tetracyclododecane, and methods of using such compositions.

Backbone-substituted 1,4,7,10-tetraaza cyclododecane-N,N′,N″,N′″-tetraacetic acid compounds, metal complexes thereof, compositions thereof, conjugates thereof, and methods of use in diagnostic imaging and treatment of a cellular disorder.

The invention provides a water soluble silver protective agent and a preparation method thereof, wherein the water soluble silver protective agent is an aqueous solution containing fatty alcohol polyoxyethylene ether, N-benzyl phenylacetamide and a protective additive, and the protective additive is one or more substance selected from the group consisting of cyclododecane, 1-octadecene, 7-octadecene and 1-laurylene. The invention also provides a chemical silvering method and a surface silver plated workpiece obtained by the method, and the method comprises first chemical silvering and then silver layer protection treatment by use of the water soluble silver protective agent. The water soluble silver protective agent can form a protective film with a layer of organic molecular structure on the surface of the silver plating layer, direct exposure to air or other corrosive environment of the silver plating layer can be avoided, oxidation and corrosion of the silver plating layer can be prevented, the silver plating layer has better corrosion resistance, good conductivity of the silver plating layer can be ensured, and good metallic luster of the silver plating layer can be maintained.

The present invention provides a cleanser composition which is used for removing fixing agents and protecting films used in processes for polishing optical articles such as lenses and has high cleansing powers against the fixing agents and the protecting films without using halogen-based solvents, fluorine-based solvents and aromatic solvents against which affections are feared. This cleanser composition is characterized by comprising 75 to 25 wt. % of an alkylene glycol alkyl ether such as dipropylene glycol monomethyl ether or dipropylene glycol dimethyl ether and 25 to 75 wt. % of a 10 to 15C cycloparaffin such as cyclodecane, cycloundecane or cyclododecane.

The invention relates to uniform molecularly imprinted polymer microspheres for use as a zeranol selective adsorbent. With an average particle size of 1 micrometer to 300 micrometers and a particle size distribution coefficient C.V. of not greater than 15%, the molecularly imprinted polymer microspheres are prepared by the method of: taking a structural analog cyclododecyl 2, 4-dihydroxybenzoate (CDHB) of zeranol as a template molecule, employing a microfluidic device to prepare microspheres of molecularly imprinted polymers (MIPs) of CDHB (CDHB-MIPs), with the microspheres characterized by good particle size uniformity and good selective absorption capacity for zeranol; placing the microfluidic device containing multiple micro channels below the liquid level of a continuous phase, making the continuous phase flow at a certain rotating speed, driving a disperse phase solution with CDHB into the microfluidic device by an injection pump, generating an emulsion when the disperse phase enters the continuous phase through the micro channels, curing the emulsion droplets so as to obtain polymer microspheres, eluting the polymer microspheres to remove the template molecule, thus obtaining the molecularly imprinted polymer microspheres of CDHB. Specifically, the disperse phase includes the template molecule CDHB, a functional monomer, a cross-linking agent, an initiator and a porogenic solvent, while the continuous phase contains water and a dispersing agent.

In the process for producing a cyclododecanone by isomerizing an epoxycyclododecane-containing starting material in the presence of an isomerization reaction catalyst containing lithium bromide and / or lithium iodide, in order to perform the reaction with high efficiency (high reaction rate) and high selectivity and stably produce a high-purity cyclododecanone in industry while maintaining a high-level reaction rate, the epoxycyclododecane-containing starting material is produced by contacting an epoxycyclododecadiene with hydrogen in the presence of a hydrogen-reduction catalyst and has a content of the hydroxyl group-containing cyclododecane compounds contained in the epoxycyclododecane-containing starting material controlled to 5 mol % or less.

The present invention belongs to the field of chemical synthesis of cyclo alkane halide. The preparation of hexabromo-cyclododecane includes the following steps: reaction of 1,5,9-cyclododecatriene and liquid bromine in mixed solvent; separation of the reacted mixture to obtain coarse hexabromo-cyclododecane product; washing with hot water; and vacuum drying to obtain hexabromo-cyclododecane product. The present invention has the features of use of mixed solvent containing C2-C4 saturated alcohol, use of no catalyst, no neutralizing step of coarse product, vacuum drying, high product yield and high product smelting point.

Disclosed herein are polyglycidyl ethers of the formula: where R, m, Q, p and Z are as defined here. Also disclosed are methods of forming said polyglycidyl ethers and methods of using said polyglycidyl ethers to make epoxy resin oligomers and polymers, including powder coatings.

The invention discloses a novel stone tablet rubbing protective agent and a preparation method thereof. The protective agent is mainly prepared from, by mass, 5.6-11.5 parts of cyclododecane and 10.5-21 parts of fluorine polymer. Accordingly, cyclododecane is adopted as one of the main raw materials, and cyclododecane has complete hydrophobicity and can be applied to cultural relics sensitive to water or an aqueous solution to serve as a waterproof barrier coating. Daikin GM-105D is selected as the applied fluorine polymer, and the fluorine polymer has the excellent heat resistance, chemical resistance, weather resistance, stain resistance, electrical characteristics and the like and has the unique properties such as non-sticky performance and self-lubricating. Accordingly, cyclododecane and the fluorine polymer are compounded to form a composite material, and the strength, permeability, alkali resistance, stain resistance, heat resistance and weather resistance of the product are improved. The evaporation speed of cyclododecane can be effectively slowed down, evaporability of the product is lowered, and the product can be removed freely.

The present invention relates to a method for the manufacture of cyclododecasulfur, a cyclic sulfur allotrope wherein the number of sulfur (S) atoms in the allotrope's homocyclic ring is 12. The method includes reacting a metallasulfur derivative with an oxidizing agent in a reaction zone to form a cyclododecasulfur-containing reaction mixture.

The present disclosure relates generally to a process for the synthesis of 1,4,7,10-tetraazacyclododecane ligands, chelates, and derivatives thereof. In particular, the present disclosure is directed to a process for the synthesis of 1,4,7,10-tetraaza-1,4,7,10-tetrakis(carboxymethyl)cyclododecane (DOTA) ligands, corresponding DOTA-metal chelates, and various derivatives thereof.

An improved method of preparing 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0.05,9.03,11]dodecane) (HNIW) is disclosed. The compound is useful as a high energy, high density explosive or propellant oxidizer.

The invention provides a polyvinyl chloride flame-retardant artificial leather material, which is prepared from the following raw materials in parts by weight: 60-80 parts of polyvinyl chloride, 2-4 parts of melamine, 9-15 parts of tetrabromobisphenol A, and molybdenum trioxide 1‑3 parts, 10‑15 parts of hexabromocyclododecane, 0.2‑0.7 parts of ferrocene, 15‑20 parts of zinc borate, 2.5‑6 parts of plasticizer, 6‑10 parts of expandable graphite, 2 parts of cosolvent ‑5 parts, flame retardant polyether 15‑19 parts, color masterbatch 0.6‑1.8 parts, brominated epoxy resin 7‑9 parts, ammonium polyphosphate 1‑3 parts, coupling agent 0.1‑0.3 parts. The material is environmentally friendly and energy-saving, non-absorbent, non-combustible, wear-resistant, simple process, good dimensional stability, good compression creep resistance, and has reached the A level of GB 50222-95 "National Standard of the People's Republic of China for Building Interior Decoration Design Fire Protection Code" Fire standards.

The invention belongs to the technical field of LEDs, and particularly relates to a preparation method of a high-power LED. The method comprises the following steps of die bonding, primary baking, wire bonding, lens packaging, glue injection curing, secondary baking and welding. The resin used by the lens contains the following raw materials: 1,4-cyclohexane diol, cyclododecane diol, phthalic anhydride, bisphenol A novolac epoxy resin, powdery non-toxic phosphite ester and phenyl salicylate. The high-power LED prepared through the preparation method is long in service life, stable in light emitting, not prone to yellowing, simple in preparation process, easy to control and suitable for large-scale production.

The invention provides a vacuum infusion epoxy resin system and a preparation method and application thereof. The vacuum infusion epoxy resin system of the present invention uses epoxy diluent raw materials including polyepoxy tar containing cyclododecane structure, and can obtain A vacuum infusion epoxy resin system with above-moderate initial mix viscosity, low midpoint peak exotherm temperature and long workability time. The present invention provides a vacuum infusion epoxy resin system, the epoxy resin system is prepared by mixing A component and B component, wherein the A component includes bisphenol A epoxy resin and epoxy diluent, The B component includes a polyetheramine curing agent and an alicyclic amine; the epoxy diluent includes a polyepoxy tar containing a cyclododecane structure, and optionally other epoxy diluents.

The invention provides a vacuum perfusion epoxy resin system as well as a preparation method and application thereof. According to the vacuum perfusion epoxy resin system, an epoxy diluent raw material comprises the polyepoxy tar containing a cyclododecane structure, and the vacuum perfusion epoxy resin system with medium or higher initial mixing viscosity, low midpoint maximum exothermic peak temperature and long operability time can be obtained. According to the vacuum perfusion epoxy resin system, the epoxy resin system is prepared by mixing a component A and a component B, wherein the component A comprises bisphenol A epoxy resin and an epoxy diluent, and the component B comprises a polyether amine curing agent and alicyclic amine. The epoxy diluent comprises the polyepoxy tar containing the cyclododecane structure, and optionally comprises other epoxy diluents.

The present invention provides an mRNA vaccine delivery carrier which is a lipid polymer prepared by reacting a PAMAM dendritic polymer and 1,2-cyclododecane epoxide. The invention provides a preparation method of the mRNA vaccine delivery carrier. The mRNA vaccine delivery carrier provided by the invention has good specificity, good stability, high efficiency, and low toxicity, and is safe and effective.

The invention provides a novel synthesis method of 1, 4, 7, 10-tetraazacyclododecane. The 1, 4, 7, 10-tetraazacyclododecane has important application in biomedicine and molecular biology, molecular recognition, catalysis, enzyme chemistry, supramolecular chemistry, hydrogen storage materials and other main surfaces. The preparation method comprises the following steps of: reacting triethylene tetramine and urea serving as initial raw materials to generate ethylene bis-imidazolinone (hereinafter referred to as bis-imidazolinone), carrying out condensation reaction on the raw material and 1, 2-dihalogenated ethane to generate 1, 4-keto-7, 10-keto-1, 4, 7, 10-tetraazacyclododecan (hereinafter referred to as diketone cyclododecane), and preparing 1, 4, 7, 10-tetraazacyclododecane by hydrolysis. According to the method, the product with the gas chromatography content of 99% or above is obtained at the highest total yield of 74.97%. The method has the advantages of high atom utilization rate, few reaction steps, simplicity, easiness in control, high yield and the like, and is a new process route representing clean and efficient production.