45 results about "Diamantane" patented technology

A positive-working photosensitive composition that includes (A) a resin containing repeating units having diamantane structures and capable of decomposing under action of an acid to increase solubility in an alkali developer, (B) a compound capable of generating a specific organic acid upon irradiation with an actinic ray or radiation, and (C) a solvent.

The invention discloses a pH reversible response mesoporous silicon oxide composite medicament-carrying system, a preparation method thereof and application thereof. The preparation method comprises the following steps of: preparing mesoporous silicon oxide nano particles by a sol-gel process; and modifying surfaces of mesoporous silicon oxide and nanometer magnetic particles respectively by using triaminomethyl ethane and 4-carboxybenzaldehyde, and reacting in alkalescent environment to generate pH sensitive triaza diamantane groups, so that the magnetic nano particles are covered on the surface of a mesoporous silicon oxide porous channel to obtain the pH reversible response mesoporous silicon oxide composite medicament-carrying system. The pH reversible response mesoporous silicon oxide composite medicament-carrying system has the excellent magnetic targeting and biocompatibility, and can realize pH response pulse release.

Disclosed is a method for producing a polymerizable hydroxydiamantyl ester compound wherein a 4,9-diamantanediol compound is produced by dihalogenating and then hydrolyzing a raw material compound having a diamantane backbone such as diamantane, and then the 4,9-diamantanediol compound is esterified in the mixture of a polymerizable unsaturated carboxylic acid and a polymerizable unsaturated carboxylic acid anhydride in the presence of a polymerization inhibitor and an acid catalyst.

A process for selectively producing 4,9-dibromodiamantane includes a step of reacting diamantane with bromine in the presence of a Lewis acid and a solvent, wherein the solvent comprises a substituted or unsubstituted, straight-chain, branched-chain or cyclic saturated hydrocarbon containing from 3 to 10 carbon atoms, and a reaction solution after the step satisfies Formula (1):A / (A+B+C+D+E)>0.80   Formula (1)wherein A represents an area ratio (%) of 4,9-dibromodiamantane obtained by gas chromatography of the reaction solution, B represents an area ratio of diamantane, C represents a sum of an area ratio of 1-bromodiamantane and an area ratio of 4-bromodiamantane, D represents an area ratio of tribromodiamantane, and E represents a sum of an area ratio of 1,6-dibromodiamantane and an area ratio of 1,4-dibromodiamantane.

Dinitroxylated diamantanes are suitable for being reacted with nucleophiles to form the corresponding disubstituted diamantanes. Surprisingly, at least dinitroxylated or hydroxylated diamantanes are rearranged in the presence of a strong acid and at least 4,9-nitroxylated or hydroxylated diamantanes are created. On this basis, 4,9-substituted diamantanes are able to be produced in a targeted manner by reaction with further nucleophiles. Methods for producing at least disubstituted diamantanes include: (a) at least dinitroxylation, followed by the substitution of all nitroxy groups by a nucleophile; or (b) at least dinitroxylation, the subsequent rearrangement in the presence of a strong acid, after realized rearrangement all nitroxy groups are replaced by a nucleophile; or (c) at least dinitroxylation, then subsequent reaction with water (as nucleophile), and rearrangement of the at least dihydroxylated compound in the presence of a strong acid, all hydroxy groups being replaced by another nucleophile in the event of a successful rearrangement.

The invention discloses fuel containing alkyl decahydronaphthalene and alkyl diamantane. The content of the alkyl damantane and alkyl decahydronaphthalene is more than 90.0 wt%; the alkyl adamantane has the following structure shown in the description, the alkyl decahydronaphthalene has the following structure shown in the description, and R1, R2, R3, R4 or R5 is one of H, -CH3 or -CH2CH3; R1, R2and R3 cannot be H at the same time; R4 and R5 cannot be H at the same time. The invention discloses a preparation method and application of the fuel containing the alkyl adamantane and alkyl decahydronaphthalene. The fuel has high density, excellent low temperature performance, and excellent high heat stability.

Disclosed is a method for separating and enriching lower diamondoid compounds from petroleum and source rock, which includes: extracting the source rock sample with a solution of dichloromethane and methanol to give a source rock extract; removing normal saturated hydrocarbons and asphaltic components from the source rock extract or a crude oil sample with ZSM-5 molecular sieve, obtaining isomeric saturated hydrocarbons components through silica-gel column; adding a solution of ß-cyclodextrin into the solution of the isomeric saturated hydrocarbons, separating the mixed suspension to obtain a deposit, adding the deposit into a solution of hydrochloric acid, maintaining the temperature from 40 to 95? in an oven, cooling to room temperature after the hydrolysis of ß-cyclodextrin catalyzed by an acid is completed, and extracting with a saturated hydrocarbon solvent to obtain lower diamondoid compounds. In this method, the rate of recovery of mono-diamondoid compounds is up to 18%, the rate of recovery of di-diamondoid compounds is up to 35%, and the rate of recovery of tri-diamondoid compounds is up to 1.5%.

The invention provides material for forming a protective film, which is excellent in stoppability and flatness when filling stopping material into a via hole, which is characterized in containing an organic solvent and a compound having at least two or more pieces of alicyclic structures. Moreover, the compound is at least one selected from spiro hydrocarbon compound, bicyclo monoterpene alkene compound, diamantane compound and steride.

The invention relates to a rubber thin sheet grinding wheel and a preparation method thereof. The rubber thin sheet grinding wheel comprises the following raw materials in part by weight: 4 to 6 parts of natural rubber emulsion, 0.5 to 1.5 parts of zinc oxide, 4 to 6 parts of sulfur, 0.5 to 2.5 parts of epoxy resin, 0.4 to 0.6 part of anti-ager, 0.3 to 0.7 part of accelerant, 6 to 8 parts of silicon carbide, 2 to 4 parts of diamantane, 2 to 4 parts of chromium corundum, 1 to 3 parts of resin powder, 0.5 to 1.5 parts of resin liquid and 3 to 5 parts of coagulator. The rubber thin sheet grinding wheel of the invention has the advantages of high wear resistance, heat resistance, self-sharpening property, heat conductivity, corrosion resistance, toughness, hardness and working efficiency and long service life; in addition, the rubber thin sheet grinding wheel prepared by the preparation method of the rubber thin sheet grinding wheel of the invention is very thin and has low loss and high accuracy during cutting.