38 results about "Benzyl Carbinol" patented technology

The invention relates to an alpha, alpha-dimethyl-benzyl carbinol hydrogenolysis method for preparing isopropyl benzene, and mainly solves the problems of poor stability of catalyst and serious environmental pollution in the isopropyl benzene production process. A technical scheme for solving the problem is as below: introducing raw materials of hydrocarbons containing alpha, alpha-dimethylbenzyl alcohol and hydrogen into a hydrogenolysis reaction zone, and reacting the raw materials with a catalyst by contact to produce isopropyl benzene. The catalyst comprises the following components by weight: a) 0.1-2.0 parts of Pd metal or oxide; b) 85.0 to 97.0 parts of SiO2; c) 1.0-10.0 parts of at least one selected from Ni or oxide thereof, Co or oxide thereof, and Cu or oxide thereof; and d) 1.0 to 5.0 parts of at least one selected from Mg or oxide thereof, Ca or oxide thereof and Ba or oxide thereof. The method can be used in industrial production of isopropyl benzene by alpha, alpha-dimethyl-benzyl carbinol hydrogenolysis.

The invention discloses a method for preparing a titanium-based catalyst and synthesizing epoxypropane and dicumyl peroxide. According to the method, when the epoxypropane is synthesized on the basis of the titanium-based molecular sieve based catalyst, a byproduct, namely dimethyl-benzyl carbinol is continuously recycled to synthesize and prepare dicumyl peroxide; the problems of equipment corrosion, large quantity of byproducts and environmental pollution caused by the traditional chlorohydrins method and an indirect oxidation method are solved; the problem of environmental pollution caused by inorganic-salt-containing wastewater produced in a process of preparing the dicumyl peroxide by reducing cumyl hydroperoxide by using inorganic matters, such as water-soluble sulfur compounds is solved; and therefore the method is a synthesis process with high atom economy and has a favorable industrial application prospect.

The invention provides a system integration technology through cell disruption, slurry extraction, membrane separation and macroporous resin adsorption and chromatography separation and purification, high temperature enzyme deactivation and spray drying and the like, which achieves a technical process that from the time fresh cistanche raw materials are fed until obtaining active matters such as monomeric compounds which are rich in echinacoside and verbascoside and the like in 30 to 80 minutes, and the invention effectively overcomes a technical defect that active components such as benzyl carbinol glycosides compounds are normally seriously degraded and lost, which are caused by an enzymatic reaction which is initiated by an imperfect dry treatment method of cistanche, and the invention obviously improves the medical value of cistanche. In the active maters of cistanche which are obtained ( calculating by dry matter), the productivity of echinacoside monomeric compound reaches to 9.8% to 19.6%, and the yield of verbascoside monomeric compound reaches to 2.0% to 7.5%. The content of echinacoside monomeric compound in active matters of cistanche which are obtained reaches to 15% to 49.6%, and the content of verbascoside monomeric compound reaches to 5% to 26.7%.

The invention relates to a method for producing dicumyl peroxide, and particularly relates to a production method for reducing a dicumyl peroxide condensation byproduct. The problem of high alpha-vinyltoluene content of the byproduct in condensation production is mainly solved. The method taking cumin as a solvent and dimethyl-benzyl carbinol and cumyl hydroperoxide as materials comprises the steps of carrying out reaction on the materials and a strong proton acid catalyst for 0.5-1 hour and carrying out condensation dehydration to generate the dicumyl peroxide under the conditions that the reaction temperature is 30-60 DEG C and the reaction manometer pressure is -0.1MPa. By adopting the production method disclosed by the invention, the condensation side effect of the dicumyl peroxide is reduced; the alpha-vinyltoluene content in condensation solution is reduced; the reaction selectivity is improved; and DCP (dicalcium phosphate) yield and quality are improved, so as to reduce isopropyl benzene consumption and reduce the production cost. On the other hand, the acid catalyst recommended to use is low in concentration, and safer in the production process.

The invention provides an edge gluing cleaning agent used in processing procedure of colored filters, which has the prescription by the weight percent of 1-60 of water soluble organic amine compound, 1-60 of benzene aromatic alcohol organic solvent and 3-80 of water, wherein the water soluble organic amine compound is neovaricaine, trolamine, diethanolameine or the mixture of two or three of neovaricaine, trolamine, diethanolameine; the benzene aromatic alcohol organic solvent is phenylcarbinol, benzyl carbinol, phenylpropanol, phenaglycodol, fenipentol or benzyl hexanol or the derivatives of the six substances; and the water is pure water with the resistance higher than or equal to 18 mega ohms. The edge gluing cleaning agent obtained by compounding can remove superfluous colored photosensitive resist at the edges or backs of glass substrates very easily under normal temperature and in shorter time and has very excellent environmental-friendly performance of production and use, thereby having wide application prospect.

The invention discloses a saccharomyces cerevisiae mutagenesis strain--saccharomyces cerevisiae CWY132 and application to prepare 2-benzyl carbinol, which is characterized by the following: the CWY132 (Saccharomyces cerevisiae CWY132) is kept in Chinese typical culture preservation center; the preservation date is 12.15 2006; the keeping number is CCTCC NO: M206136; the ferment circle is short; the ferment temperature range is wider. This invention does not possess special demand to device, which can be used to general ferment plant.

The invention discloses a method for preparing isopropylbenzene through catalytic hydrogenolysis of alpha,alpha-dimethyl-benzyl carbinol. According to the method, an NiB-Zn/ZIF-8 catalyst is adopted,alpha,alpha-dimethyl-benzyl carbinol and hydrogen are taken as the raw materials, the molar ratio of raw material gas/nitrogen is 1 to 15, the molar ratio of hydrogen/alpha,alpha-dimethyl-benzyl carbinol is 5 to 1, and under the condition that the reaction temperature is 120 DEG C, the reaction pressure is 0.5MPa and the volume velocity of inert carrier gas is 3.0h<-1>, the conversion rate of alpha,alpha-dimethyl-benzyl carbinol is 100%, and the selectivity of isopropylbenzene is over 96.8%, so that a relatively technical effect is achieved, the product is easy to separate, the after-treatmentis simple, and the catalyst can be recycled for repeated use.

The invention provides a method used for combined production of dimethyl-benzyl carbinol and 1,2-pentanediol. The method comprises following steps: 1-pentene and isopropyl benzene hydroperoxide are subjected to epoxidation reaction under the action of an epoxidation catalyst so as to obtain a reaction solution containing 1,2-cyclopentene oxide and dimethyl-benzyl carbinol; the reaction solution is subjected to separation so as to obtain 1,2-cyclopentene oxide and dimethyl-benzyl carbinol; 1,2-cyclopentene oxide and water are subjected to hydrolysis reaction under the action of a hydrolysis catalyst, and rectification is carried out so as to obtain 1,2-pentanediol. According to the method, 1-pentene and isopropyl benzene hydroperoxide are taken as the raw materials in combined production of dimethyl-benzyl carbinol and 1,2-pentanediol, operation is simple, synthesis cost is low, no waste water is generated in synthesis process, dimethyl-benzyl carbinol selectivity is 90% or higher, and 1,2-pentanediol selectivity is 80% or higher.

The invention relates to a method for producing beta-phenethyl alcohol by using a biotransformation method. The method comprises the following steps of: inoculating a seed solution subjected to amplification culture of sccharomyces cerevisiae as a biological catalyst into a fermentation tank filled with a fermentation medium with L-phenyl alanine as a reaction substrate; suspending a mesh bag filled with macroporous resin in the fermentation tank; after fermenting, taking out the mesh bag; clarifying and finely filtering fermentation broth and circularly reflowing the obtained fermentation broth in a resin column; then draining a residual adsorption liquid; eluting the resin column with absolute ethyl alcohol to obtain an eluant containing benzyl carbinol; soaking the mesh bag with the eluant first and then introducing the mesh bag into a rotary evaporator for concentrating and recovering the ethanol; and distilling the obtained concentrate to obtain high-purity beta-phenethyl alcohol. According to the method disclosed by the invention, the beta-phenethyl alcohol generated in the fermentation tank is adsorbed by the mesh bag filled with the macroporous resin suspended in the fermentation tank, so that the content of the beta-phenethyl alcohol in the fermentation broth adsorbed by the macroporous resin is increased, the extraction content of the beta-phenethyl alcohol is increased and high yield and purity of products are obtained.

The invention relates to a Closantel sodium and avermectin compound injection for animals and process for preparation, wherein the injection is prepared from Closantel sodium, avermectin, glycerol formal, benzyl carbinol and methyl glycol as raw material through mixing homogeneously under predetermined conditions.

The invention relates to a hair tonic and hair promotion agent for rubbing scalp and hairs to lead hairs to grow strong, preventing hairs from being lost, and promoting hairs to grow. The main compositions of the hair tonic and hair promotion agent comprise residual liquid of alfalfa deproteinising, quinine sulfate, rose water, ceraniol, benzyl carbinol, lauryl alcohol, linalool, eugenol, alcohol and water. The relative hair tonic and hair promotion agent can be made by the main compositions through special technique. The main composition of the invention is residual liquid of alfalfa deproteinising which has low cost and easy availability, and is beneficial for lowering cost. Alfalfa is a natural edible plant, and deproteinising residual liquid of alfalfa which is used as effective composition is safe to human bodies. The invention has excellent hair tonic and hair promotion effect, which has the effects of leading hairs to grow strong, preventing hairs from being lost, and promoting hairs to grow, and the invention has quick results.

The invention discloses plant indoor disinfectant, which is prepared from the following formula ingredients in parts by mass: 1 to 3 parts of alkyl polyglucoside, 3 to 5 parts of absolute ethyl alcohol, 6 to 10 parts of tea saponin, 3 to 5 parts of dimethyl benzyl carbinol, 4 to 6 parts of quick lime, 7 to 9 parts of aliphatic polyoxyethylene ether, 10 to 20 parts of traditional Chinese medicine compositions, 2 to 4 parts of sodium gluconate, 80 to 100 parts of distilled water, 3 to 5 parts of camphor wood oil and 10 to 14 parts of ginger juice. The plant indoor disinfectant has the advantages of no toxicity, no pollution and good decontamination performance; the toxicity of traditional Chinese medicine extraction solution can be reduced; and the peculiar smell in the traditional Chinese medicine is reduced.

The invention relates to an energy-saving type dicumyl peroxide (DCP) device condensation reaction method and mainly aims to solve the problem of high energy consumption of the device in the prior art. The energy-saving type dicumyl peroxide (DCP) device condensation reaction method comprises the following steps: firstly adding a certain amount of one or several mixed material of cyclohexane, hexane, benzene or methylbenzene into a condensation kettle, then adding dimethyl-benzyl carbinol and isopropylbenzene hydroperoxide into the condensation kettle to carry out condensation reaction, sucking heat released by the condensation reaction by one or several mixed material of the cyclohexane, the hexane, the benzene or the methylbenzene, vaporizing, introducing one or several mixed material of the cyclohexane, the hexane, the benzene or the methylbenzene into a condenser together with the steam generated by the reaction, condensing mixed gas into liquid, introducing the liquid into an oil-water separator for separating, returning oil phase of one or several mixed material of the cyclohexane, the hexane, the benzene or the methylbenzene to the condensation kettle to recycle. Through the technical scheme of discharging water phase which is process water generated by the reaction, the problem can be effectively solved; the method can be applied to the dicumyl peroxide (DCP) device condensation reaction.

The invention relates to a catalyst and a method for catalytic preparation ofthereof in preparing a chemical product 1,2-pentanediol in a catalytic modeusing same. The catalyst comprises a primary catalyst and a secondary catalyst, and is characterized in that the primary catalyst is salt of acetylacetonate salt or 2-ethylhexanoic acid salt 2-ethyl caproate, the secondary catalyst is lewis acid, and lewis acid is one or more of ferric trichloride, stannic chloride, tin trifluoromethanesulfonate, lithium chloride, lithium bromide or boron trifluoride. A process of preparing 1,2-pentanediol canbe simplified through catalysis of the catalyst, and 1,2-pentanediol and dimethyl-benzyl carbinol can be co-produced, and selectivity of the products 1,2-pentanediol and dimethyl-benzyl carbinol can be as high as 96% and 98% or more separately.