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1036 results about "Propanol" patented technology

There are two isomers of propanol.

Prion-free collagen and collagen-derived products and implants for multiple biomedical applications; methods of making thereof

The use of collagen as a biomedical implant raises safety issues towards viruses and prions. The physicochemical changes and the in vitro and in vivo biocompatibility of collagen treated with heat, and by formic acid (FA), trifluoroacetic acid (TFA), tetrafluoroethanol (TFE) and hexafluoroiso-propanol (HFIP) were investigated. FA and TFA resulted in extensive depurination of nucleic acids while HFIP and TFE did so to a lesser degree. The molecules of FA, and most importantly of TFA, remained within collagen. Although these two acids induced modification in the secondary structure of collagen, resistance to collagenase was not affected and, in vitro, cell growth was not impaired. Severe dehydrothermal treatment, for example 110° C. for 1-3 days under high vacuum, also succeeded in removing completely nucleic acids. Since this treatment also leads to slight cross-linking, it could be advantageously used to eliminate prion and to stabilize gelatin products. Finally, prolonged treatment with TFA provides a transparent collagen, which transparency is further enhanced by adding glycosaminoglycans or proteoglycans, particularly hyaluronic acid. All the above treatments could offer a safe and biocompatible collagen-derived material for diverse biomedical uses, by providing a virus or prion-free product.

Separating and recovering method for organic oxygen-containing compounds in Fischer-Tropsch synthesis water phase

The invention relates to method and equipment system for separating and recovering organic oxygen-containing compounds in a Fischer-Tropsch synthesis water phase. The equipment system is integrated by adopting twelve towers including a mixed acid cutting tower, an acetaldehyde rectifying tower, a methanol/ethanol dividing tower, a methanol extraction rectifying tower, a methanol rectifying tower, an acetaldehyde removing tower, an ethanol tower, a propanol concentration extracting tower, a propanol intermittent azeotropic distillation tower, a carboxylic acid extraction tower, a carboxylic acid intermittent rectifying tower and an extraction agent recovering tower matched with the carboxylic acid extraction tower for use. By applying the method and equipment system disclosed by the invention, more than ten kinds of organic oxygen-containing compounds such as acetaldehyde, acetone, methanol, ethanol, normal propyl alcohol, normal butanol, acetic acid, metacetonic acid, butyric acid, butanone and the like can be separated from raw materials; and the products can respectively reach the industrial purity. The method and equipment provided by the invention are economic, effective and reasonable; and according to the method and equipment, efficiency of Fischer-Tropsch synthesis industrial enterprises can be greatly increased, production cost is reduced and goal of clean production can be achieved.

Metal oxide nanometer material for treating wastewater containing dyes or heavy metal ions, preparation method and application thereof

InactiveCN101591044ARaising the temperature can increase the active pointIncrease active pointOther chemical processesWater/sewage treatment by sorptionHigh pressureZinc nitrate
The invention relates to a metal oxide nanometer material for treating wastewater containing dyes or heavy metal ions, a preparation method and application thereof. Compositions of the metal oxide nanometer material is one or a mixture of more than two of CaO, ZrO2, SiO, ZnO, TiO2, MgO, Fe2O3 and NiO. The preparation method comprises the following steps: dissolving one or a mixture of more than two of calcium nitrate containing crystallization water, zirconium nitrate, ethyl orthosilicate, zinc nitrate, butyl titanate, magnesium nitrate, ferric nitrate and nickel nitrate into methanol, ethanol or propanol, adding a phenylcarbinol or benzylcarbinol structure-directing agent into the obtained solution, moving the mixture into a high-pressure kettle after the mixture is mixed evenly, heating the mixture to between 120 and 200 DEG C for 2 to 6h to ensure that nitrate is completely alcoholized under the protection of chlorine gas with the pressure of between 10 and 1.5*10 Pa, then heating the mixture to between 261 and 269 DEG C for 15h, drying the obtained product, and then performing high-temperature roasting at a temperature of between 300 and 500 DEG C to obtain the metal oxide nanometer material. The metal oxide nanometer material is added into the wastewater containing the dyes or the heavy metal ions to ensure that the metal oxide nanometer material and the wastewater are fully contacted to decolorize, absorb or degrade the wastewater containing the dyes.

Long-chain alkyl phenyl modified hydrogen containing silicone oil releasing agent preparation method

The invention discloses a long-chain alkyl phenyl modified hydrogen containing silicone oil releasing agent preparation method. The method includes the steps of subjecting tetramethyl tetra-hydrogen cyclotetrasiloxane and a catalyst of chloroplatinic acid to reaction, dropping styrene for reaction for some time, dropping long-chain alpha-olefin and a chloroplatinic acid isopropyl propanol solution to obtain an intermediate product of tetramethyl alkyl phenyl cyclotetrasiloxane, subjecting the obtained intermediate product of tetramethyl alkyl phenyl cyclotetrasiloxane, octamethylcyclotetrasiloxane, hexamethyldisiloxane and an acid catalyst to full reaction, fully cooling the obtained liquid, slowly adding calcium hydroxide to adjusting the PH value to 6-7, filtering out solids produced in neutralization with a vacuum pump, adding anhydrous magnesium sulfate to adsorb water produced in neutralization, and filtering to obtain a long-chain alkyl phenyl modified hydrogen containing silicone oil releasing agent. The long-chain alkyl phenyl modified hydrogen containing silicone oil releasing agent prepared through the preparation method has the advantages of being simple in process, high in efficiency, low in cost, short in cycle and the like.
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