84 results about "Indane" patented technology

The invention concerns a process for separating meta-xylene from a hydrocarbon feed comprising isomers containing 8 carbon atoms, comprising: a step for bringing said feed into contact with a faujasite type zeolite adsorbant, the water content of the adsorbant being in the range 0 to 1% by weight and the adsorption temperature being from 160° C. to 180° C.; a desorption step employing a solvent selected from toluene, indane and mixtures thereof.

The present invention relates to indane derivatives useful as inhibitors of ion channels. The invention also provides pharmaceutically acceptable compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various disorders.

A method of inhibiting cell proliferation in a patient suffering from such disorder comprising administering to said patient an effective amount of a composition comprising, in admixture with a pharmaceutically acceptable carrier, a compound, or a pharmaceutically acceptable salt thereof, which is a substituted styrene compound which can also be a naphthalene, an indane or a benzoxazine; including nitrile and molononitrile compounds, and pharmaceutical compositions comprising, in admixture with a pharmaceutically acceptable carrier, a pharmaceutically-effective amount of such compound.

The invention discloses a chiral spiro phosphoramide derivative, which is a compound with a structural formula (1), a racemate or an optical isomer thereof. The chiral spiro phosphoramide derivative has a chiral spirobiindane skeleton, and is synthesized by adopting a 1,1'-spiro indane-7,7'-diphenol derivative with a spiro skeleton and a characteristics of optical activity as a chiral starting raw material. The chiral spiro phosphoramide derivative is a novel Bronsted acid organic small molecule catalyst, and can be widely used for catalysis of a plurality of asymmetric organic reactions.

Reduced emissions in a jet fuel having aromatics content can be achieved by incorporating a quantity of an aromatic kerosene fuel blending component, preferably a bio-derived synthetic aromatic kerosene, comprising at least 90 wt. % of aromatics, less than 10 wt. % of indanes and tetralins and less than 1 wt. % of naphthalene into a jet fuel in a manner to meet the aromatic content specification for jet fuels. A jet fuel having aromatics content having reduced number-based nvPM emissions compared to equivalent total aromatics content petroleum-derived kerosene jet fuel is obtained.

The invention relates to a liquid crystal aligning agent, a liquid crystal alignment layer, a liquid crystal display element, polyamide acids and polyimides. The liquid crystal aligning agent provided does not deteriorate due to film absorbing water after liquid crystal alignment layer is formed and exposed to air for a while, has excellent coating peeling property and excellent printing performance. The liquid crystal aligning agent contains at least one polymer selected from a group consisting of polyamide acids and polymides obtained by dewatering cyclization of the polyamide acids, and the polyamide acids are obtained through reaction between diamines and tetracaboxylic dianhydrides. The liquid crystal aligning agent is characterized in that the diamines are special diamines having a structure of phenyl - indane and diamines containing carboxyl.

The invention discloses a device and a method for reclaiming and separating heavy component residue of a coked crude benzene hydrogenation process, and belongs to the technical field of rectification separation. The reclaiming device comprises a heavy component removal tower, a light component removal tower, a trimethyl benzene tower, an indane tower and a tetrahydronaphthalene tower connected sequentially; the bottom of each tower is communicated with a re-boiler, the top of each tower is communicated with a condenser, and the condenser is communicated with a vacuum system; the heavy component residue of the coked crude benzene hydrogenation process is continuously rectified and separated through the heavy component removal tower, the light component removal tower, the trimethyl benzene tower, the indane tower and the tetrahydronaphthalene tower in sequence, and trimethyl benzene, indane, tetrahydronaphthalene and naphthalene are obtained and respectively have purity of over 98.0 weight percent, 99.5 weight percent, 99.7 weight percent and 99.0 weight percent. The process has the advantages of reasonable flow, high reclaiming rate, low operating temperature, low process energy consumption, high product quality and the like, and is an efficient and feasible process for reclaiming and separating the heavy component residue of the coked crude benzene hydrogenation process.

Tetrahydroindene is dehydrogenated in a vapor phase in the presence of a metallic catalyst, e.g., a nickel-molybdenum catalyst, to produce indene, which is industrially useful in high yield while inhibiting the catalyst from suffering a decrease in activity. In particular, a higher yield can be attained by a method in which tetrahydroindene is dehydrogenated to first convert it into indane, which is further dehydrogenated to obtain indene.

The invention discloses a C9 heat polymerization type petroleum resin product with a light color and a high softening point and a preparation process thereof, and belongs to the technical field of petroleum resin preparation. The preparation method includes the following steps that C9 aromatic hydrocarbon fraction, which is a by-product of a cracking ethylene plant, serves as the main raw material, first the C9 raw material oil is subjected to rectification treatment to obtain a de-weighted C9 raw material; then, the de-weighted C9 raw material, dicyclopentadiene, methyldicyclopentadiene, indene, indane and the like are accurately weighed according to a certain proportional relationship, dissolved in a solvent oil and added into a thermal polymerization reactor, a the reaction initiator isadded, the mixture is stirred to be uniform, polymerization is carried out under a nitrogen atmosphere and normal pressure, the polymerized reactant is treated by a stripping device for recovering the solvent, and then the C9 heat polymerization type petroleum resin is obtained. According to the C9 heat polymerization type petroleum resin product with the light color and the high softening pointand the preparation process thereof, the C9 heat polymerization type petroleum resin suitable for the paint industry can be prepared by adjusting the contents of some components in the reaction materials and adding the reaction initiator.

The invention discloses an aromatic air disinfectant spray special for wards and a preparation method thereof, and belongs to the technical field of medical disinfection. The aromatic air disinfectantspray special for the wards is prepared from the following raw materials: carboxymethyl isomaltooligosaccharide, triethanolamine, nano zinc oxide, Chinese prickly ash extract, hydroxyl indane musk, benzoin resin, chitosan, activated carbon, rhizoma atractylodis, radix angelicae dahuricae, radix rehmanniae preparata, green tea, amino silicone oil, apple juice, and deionized water. The disinfectantspray of the invention is used for disinfecting the wards, can keep the fragrant and apple complex flavor in a ward, has an effect of adjuvant treatment of disease, greatly improves an adjuvant treatment rate, and has a certain inhibitory effect on escherichia coli and staphylococcus aureus, and the inhibitory rates are 94.14% to 96.34% and 92.57% to 94.33% correspondingly.

The invention discloses a method for preparing donepezil hydrochloride. The method prepares the donepezil hydrochloride by five steps of reduction reaction for preparing 5,6-dimethoxy-2-(-4-piperidine methyl)-indane-1-ketone acetate, condensation, reduction, substitution and closed ring decarboxylation. The preparation method has the advantages of easily obtained and cheap raw materials, simple synthesis operation, mild reaction conditions, good reaction selectivity and good yield, and is easy to control and suitable for industrialized production.

The invention relates to a treatment method for recovering pentamethyl indane in galaxolide production. The treatment method comprises the following steps: adding a certain amount of ferrous sulfate into a recovered pentamethyl indane solution, and slowly and dropwise adding a certain amount of concentrated sulfuric acid to provide an acidic environment; after the concentrated sulfuric acid is dropwise added, controlling a certain temperature, dropwise adding hydrogen peroxide and carrying out Fenton oxidation reaction; after dropwise adding is completed, carrying out heating to a certain temperature to continue the reaction, and after the reaction is completed, conducting standing for layering and separating out lower-layer acid water; adding excessive alkaline water into an upper-layer pentamethyl indane phase for neutralization; and after neutralization is completed, separating out lower-layer alkaline water to obtain treated pentamethyl indane. According to the method, the conversion rate of pentamethyl indane is increased, production cost is reduced, production efficiency is greatly improved, the reaction efficiency and the material utilization rate of the whole production process are optimized, and the economic benefits of enterprises are increased.

The invention belongs to the field of organic optoelectronics and discloses an electroluminescent monomer and polymer and preparation and application methods thereof. The structural formula of the electroluminescent polymer is shown as follows, which introduces a naphthalene nucleus on the structural basis of 10, 12-indane[2, 1-b] fluorene, accordingly, not only can the advantages of the 10, 12-indane[2, 1-b] fluorene which can effectively inhibit production of exciplexes and shortening of conjugated length to lead to movement of luminescent wavelength towards short wavelength and further to facilitate emission of purer blue light be retained, but also, by means of an asymmetric structure, the electroluminescent polymer can facilitate formation of amorphous film to inhibit fluorescence quenching. The electroluminescent polymer is high in dissolving property and applicable to processing solution, reducing device production costs as well as preparing large-area flexible OLED (organic light emitting diode) devices, and saves annealing treatment during production of electroluminescent devices, thereby being simple in production processes and having a huge potential and prospect for development in the field of organic electronic display.

The invention relates to a chiral spiro phosphoric acid dirhodium complex as well as a preparation method and application thereof. The chiral spiro phosphoric acid dirhodium complex is a compound shown in a formula I, can be prepared by reacting phosphoric acid with a chiral spiro indane skeleton with rhodium acetate, and is mainly structurally characterized in that four chiral spiro phosphoric acid anions are coordinated to two rhodium atoms. The complex can catalyze the insertion reaction of carbene derived from diaryldiazo to a silicon-hydrogen bond to prepare a chiral organosilicon compound.

Provided is a solution comprising a polymer and an organic semiconductor compound, wherein the semiconductor compound is a thiophene derivative, and wherein the solvent is a mixture comprising a) at least one of 4-methyl anisole, indane and an alkylbenzene with a linear or branched alkyl group containing from 4 to 7 carbon atoms; and b) at least one of tetrahydronaphthalin and 1,2,4-trimethylbenzene.

The present invention provides a sulfonated coal tar distillate salt polymer that is a condensation product of an aldehyde, preferably formaldehyde, and a sulfonated middle fraction obtained during coal tar distillation. The middle fraction includes from about 40% to about 95% by weight naphthalene and from about 5% to about 60% by weight of a plurality of compounds selected from the group consisting of quinoline, indene, biphenyl, indane, acenaphthene, anthracene, phenanthrene, methyl naphthalene, cresol, phenol, xylenol, and tetralin. The present invention also provides a method of forming a sulfonated coal tar distillate salt polymer. The method includes sulfonating the middle fraction to form a middle fraction sulfonic acid mass, optionally adding a first portion of water to the middle fraction sulfonic acid mass to form a mixture, reacting the mixture and an aldehyde to form a condensate, optionally adding a second portion of water to dilute the condensate, and adding a base to form a sulfonated middle fraction salt polymer. Sulfonated middle fraction salt polymers formed in accordance with the method of the invention are useful as dispersants and plasticizers in aqueous cementitious slurries.

This invention relates to a solvent for crystallizing and purifying anthracene series products, which is composed of toluene, xylene, trimethylbenzene, styrene, benzofuran, indane and indene, wherein the sum of toluene, xylene and trimethylbenzene is 70-95 wt.%; the sum of xylene and styrene is 70-90 wt.%; the sum of benzofuran, indane and indene is 1-5 wt.%. The solvent can increase the washing and separation abilities to the impurities in the anthracene range in tar, improve the purification effect of anthracene and carbazole, and increase the yield.

The invention belongs to the technical field of production of chemical products, and particularly relates to a preparation method of pentamethylindane, wherein the preparation method comprises the following steps: S1, synthesis of an indane crude product: uniformly mixing alpha-methyl styrene and isoamylene, dropwise adding the mixed solution into a reaction kettle, adding a catalyst into the reaction kettle, and reacting to obtain pentamethylindane, wherein the catalyst is phosphomolybdic acid; and S2, rectifying of the indane crude product: rectifying the indane crude product by using an indane rectifying unit to obtain the pentamethyl indane finished product. The preparation method has the beneficial effects that the phosphomolybdic acid is used as the catalyst to catalyze the pentamethylindane preparation reaction, and the phosphomolybdic acid is protonic acid formed by taking the regular octahedral metal oxide heteropolyanion as a basic unit, so that the phosphomolybdic acid has stronger acidity and oxidation-reduction property compared with common phosphoric acid, and thus, the phosphomolybdic acid has more excellent catalytic performance, and is beneficial to improving the yield of pentamethylindane.