273 results about "Sulfuric Acid Esters" patented technology

A polishing composition includes silicon dioxide, an alkaline compound, an anionic surfactant, and water. The silicon dioxide is, for example, colloidal silica, fumed silica, or precipitated silica. The alkaline compound is, for example, potassium hydroxide, sodium hydroxide, ammonia, tetramethylammonium hydroxide, piperazine anhydride, or piperazine hexahydrate. The anionic surfactant is at least one selected from a sulfonic acid surfactant, a carboxylic acid surfactant, and a sulfuric acid ester surfactant. The polishing composition can be suitably used in applications for polishing a silicon wafer.

Sulfonated graft copolymer obtained by radical graft copolymerization of one or more synthetic monomers in the presence of hydroxyl-containing naturally derived materials. The graft copolymer includes 0.1 to 100 wt %, based on weight of the total synthetic monomers, of at least one monoethylenically unsaturated monomer having a sulfonic acid group, monoethylenically unsaturated sulfuric acid ester or salt thereof, with the monomer and hydroxyl-containing naturally derived materials present in a weight ratio of 5:95 to 95:5.

A foamable composition includes greater than about 40 weight percent of an alcohol, based upon the total weight of the alcoholic composition, and a foaming surfactant selected from gemini surfactants, sulfuric acid esters, di-esters, C_10-34 fatty alcohols, polyquaternium polymers, and combinations thereof.

The invention discloses low molecular weight carboxyl-reduced derivatives of fucosylated glycosaminoglycans (LCRG). The extent of carboxyl reduction is not less than 20%. Weight-average molecular weight of the LCRG is about 3000-20000Da, and monosaccharides comprise acetyl galactosamine (GalNAc), glucose (Glc) or glucuronic acid (GlcUA) and fucose (Fuc) or sulfates of fucose (shown as -OSO3-). The mole ratio of GalNAc, Glc (containing GlcUA), Fuc and -OSO3- is about 1: (1+-0.3): (1+-0.3): (3.0+-1.0). The LCRG is a potent human immunodeficiency virus (HIV) Type 1 entry inhibitor which acts on conserved regions and has the advantages of high activity against HIV Type 1, high therapeutic index and no-drug-resistance, and the LCRG can be used for preventing or curing HIV. The invention further provides a preparation method of the LCRG. The carboxyl-reduced derivatives of fucosylated glycosaminoglycans and medicinal compositions of the carboxyl-reduced derivatives can be prepared into injection agents, lyophilized powder or suppository and the like.

The invention discloses a low molecular weight glycosylated chondroitin sulfate, whose weight average molecular weight is 3000-15000Da. The monosaccharide composition comprises acetyl galactosamine (D-GalNAc), glucuronic acid (D-GlcUA), fucose (L-Fuc), or its sulfuric ester (expressed in -OS03<->), wherein the mole ratio of D-GalNAc to D-GlcUA to L-Fuc to -OS03<-> is 1: (1+/-0.3): (1+/-0.3): (3.5+/-0.5). The low molecular weight glycosylated chondroitin sulfate has a strong anti-HIV-1 virus activity, is a gp120 entry inhibitor, and can be used for preventing and/or treating AIDS. The invention also provides a method for preparing the low molecular weight glycosylated chondroitin sulfate and its composition preparation. Glycosylated chondroitin sulfate is depolymerized by the peroxide method to obtain a low molecular weight product, and then low molecular and/or high-molecular impurities of the product are removed by gel separation or ultrafiltration method. The low molecular weight glycosylated chondroitin sulfate and its medicinal composition can be prepared in the form of an injection, a lyophilized powder or a suppository.

The invention relates to the following general formula compound (I) and use of the general formula compound in preparing anti-inflammatory and anti-endotoxin medicines. In formula I, R is an acid solubilizing side chain of hydroxide radical in an arctigenin molecule, and can be an acid group or side chain imported through alkylation reaction or acylating reaction, such as sulphonic acid ester, sulfuric acid ester, organic phosphate, succinate, propionic ether, butyric ester, semi-succinate, semi-glutaric acid ester, semi-tartrate, semi-phthalic acid ester, m-benzene sulfonic acid ester and so on.

The present invention provides an aqueous-dispersion-type pressure-sensitive adhesive composition and a pressure-sensitive adhesive sheet formed thereof. This composition comprises a rubber latex, a tackifier resin emulsion, a dispersant composed primarily of a polycarboxylic acid (salt) having a hydrophobic side chain, and an emulsifier composed primarily of a polyoxyethylene alkyl ether sulfuric acid ester having an average polymerization degree of 16 to 80. A preferred dispersant contains carboxyl group at 2 to 6 mmol/g and an aqueous solution thereof at 1% by mass has a surface tension of 25 to 45 mN/m.

The invention discloses a perovskite thin film with a passivation layer. The passivation layer is formed on the surface of the perovskite thin film by using a modification solution through a spin-coating method and a soaking method; passivation molecules of the passivation layer are composed of aryl, alkyl and functional groups; aryl is any one of arylene, heteroarylene, arylene vinylene, heteroarylene vinylene, arylene ethynylene and heteroarylene ethynylene; y in the alkyl is not less than 1; the functional group is any one of sulfydryl, amido, ammonium group, sulfate, phosphate and sulfonate. According to the passivated perovskite thin film disclosed by the invention, the passivation molecules of the passivation layer are characterized in that functional groups are arranged at the two ends of the aryl, so that the acting force between the passivation molecules and perovskite is enhanced; more importantly, when the functional groups at the two ends react with perovskite, the aryl part in the middle can cover the surface of perovskite more effectively, and structural defects are repaired; and finally, the stability of the perovskite solar cell is improved.

The present invention relates to the detergent composition, containing (a) a nonionic surfactant represented by the formula (1); and (b) a sulfuric acid ester salt represented by the formula (2):

R—O-(EO)_m—(PO)_n-(EO)_m′—H  (1)

wherein, R represents a hydrocarbon group having 6 to 24 carbon atoms; EO represents an ethyleneoxy group; PO represents a propyleneoxy group; m=0.1 to 25; m′=0 to 24.9; m+m′=0.5 to 25; and n=0.1 to 10; with the proviso that (EO)_m, (PO)_n, and (EO)_m′ are arranged in a block addition mode in this order;

R¹—O—(PO)_x-(EO)_y—SO₃M  (2)

wherein, R¹ represents a hydrocarbon group having 6 to 24 carbon atoms; x=0.1 to 10; y=0 to 30; (PO)_x and (EO)_y are arranged in any order in any addition mode, being a block addition or a random addition, M is a counter ion.

The invention discloses an electrolyte for a lithium battery. The electrolyte contains a pyridine ionic liquid, and the pyridine ionic liquid contains cations and anions; the cations are N-alkylpyridine; the anions are one kind of the anions of a group consisting of aluminum tetrachloride acid radical ions, gallium tetrachloride acid radical ions, tetrafluoroboric acid anions, hexafluorophosphoric acid anions, bis(trifluoromethanesulphonyl)imine anions, lactic acid anions, p-methyl benzene sulfonate acid radical anions, acetyl sulfonyl imide anions, saccharin anions, amino acids anions, sulfuric acid ester anions, succinic acid diisooctyl ester sulfonate radical anions, 4,5-dimetridazloe anions, and 5-nitrotetrazolato anions. The electrolyte can inhabit increasement of a metal lithium surface passivatin layer (an SEI film) in the lithium battery, and can significantly improve storage performance of the battery. Furthermore, the invention further discloses a preparation method for the electrolyte and the lithium battery containing the electrolyte.

A polyose (YCP) sulfate derivative used for preparing anticoagulant, antithrombolic, antioxidizing medicine, antineoplastic medicine and anti-AIDS disease, and its preparing process are disclosed.

The invention provides a prodrug of flavonoids and pharmaceutically acceptable salt or solvate of the prodrug. The prodrug is shown in a formula I in the specification. The prodrug of the flavonoids is prepared by substituting sulfate or sulfate ester, carbonate or carbonic ester and phosphate or phosphate ester for hydrogen of hydroxyl. The prodrug overcomes defects of poor water solubility and low bioavailability of original flavonoids.

The invention discloses electrolytic solution for a high-temperature high-magnification type lithium ion battery. The electrolytic solution comprises an aprotic organic solvent, basic electrolyte lithium salt and a functional additive, wherein the aprotic organic solvent is one substance or a mixture of more of common carbonic ester, sulfite and sulfone compound and the like; the basic electrolyte lithium salt is 0.5-1.2mol/L of double-oxalate lithium borate or lithium difluoroborate or a mixture of the double-oxalate lithium borate and the lithium difluoroborate; the functional additive is sulfate difluoro lithium borate or sulfite difluoro lithium borate or a mixture of the sulfate difluoro lithium borate and the sulfite difluoro lithium borate. The electrolytic solution disclosed by the invention has the advantages that by optimization of components of the electrolytic solution, the electrical conductivity and the thermal decomposition temperature of the electrolytic solution are improved, the impedance of a solid electrolyte interfacial film formed by the electrolytic solution on the surface of the electrolyte material is greatly reduced, and further the high-temperature performance and the rate performance of the battery are improved.

A lithium secondary battery including: a positive electrode which contains a positive electrode active material capable of absorbing and desorbing lithium; a negative electrode which contains a negative electrode active material capable of absorbing and desorbing lithium; and a non-aqueous electrolytic solution, wherein at least one of the positive electrode or the negative electrode contains a polymer that is a reaction product of a defined compound (A) and a defined compound (B) which is different from compound (A), and the non-aqueous electrolytic solution contains an additive (X). The additive (X) is at least one compound selected from the group consisting of: a carbonate compound having a carbon-carbon unsaturated bond, a carbonate compound having a halogen atom, an alkali metal salt, a sulfonic acid ester compound, a sulfuric acid ester compound, a nitrile compound, a dioxane compound, and a substituted aromatic hydrocarbon compound.

The invention discloses a method for preparing a high-purity cyclic sulfuric ester. The method comprises the following steps: adopting a method of removing residual raw materials by reaction, namely dissolving the prepared cyclic sulfuric ester crude product in a proper solvent, then adding certain amount of water into the solution, adding a proper amount of potassium permanganate solid in batch under stirring, reducing the generated manganese dioxide and excessive potassium permanganate by using a reducing agent such as sodium bisulfite, and finally treating an organic layer by the steps of water washing, alkali washing, water washing, drying, decompressing to remove the solvent and the like to obtain the high-purity cyclic sulfuric ester. The purified cyclic sulfuric ester is suitable to be used as an electrolyte additive of a lithium secondary battery to improve cycle performance, high-temperature performance and the like of the lithium secondary battery.

To provide a polishing composition suitable for use to polish a silicon dioxide film, particularly for use to polish a silicon dioxide film formed on a silicon substrate or a polysilicon film, and a polishing method by means of such a polishing composition. The polishing composition of the present invention comprises a colloidal silica having a degree of association of more than 1, and an acid, and has a pH of from 1 to 4. The acid is preferably at least one member selected from the group consisting of a carboxylic acid and a sulfonic acid. This polishing composition preferably further contains an anionic surfactant. The anionic surfactant is preferably a sulfuric acid ester or a sulfonate.

The invention discloses a preparation method for a sulfuric acid ester salt fluorine surfactant. The method comprises the following steps: taking 4-perfluoro alkene oxygen group benzene sulfonyl chloride and 2-methylamino alcohol as raw materials, taking inorganic base or organic base as an acid-binding agent, and carrying out an amidation reaction in an organic solvent 1 to obtain N- ethoxyl-N-methyl-4-perfluoro alkene oxygen group benzene sulfonyl chloride; and carrying out the esterification reaction of N-ethoxyl-N-methyl-4-perfluoro alkene oxygen group benzene sulfonyl chloride and sulfur trioxide in an organic solvent 2 for 1.5 to 15 hours, carrying out distillation to remove the solvent when the esterification reaction is finished, adding water for dissolution, then adding inorganic base aqueous solution with the mass content of between 10 and 50 percent into the solution till the reaction system is neutral, stirring the reaction system for reaction, and finally obtaining sulphuric acid 2-( N-methyl-4- perfluoro alkene oxygen group benzene sulfonyl chloride)ethyl ester sodium. The preparation method has a convenient raw material source, a simple synthesis method and few wastes. In particular, sulfur trioxide (SO3) and N- ethoxyl-N-methyl-4- perfluoro alkene oxygen group benzene sulfonyl chloride are adopted to carry out the esterification reaction, thereby bringing about high reaction yield.

The invention relates to a method for preparing a sulphuric acid ester ion liquid. The method takes simple amine and sulfuric acid ester as raw materials which are subjected to alkylation in order to synthesize the sulphuric acid ester ion liquid with high selectivity and high yield. The method has the advantages that the raw materials are cheap and available easily, the product has low cost, the synthesizing process is simple, the atom economy is high, the environment protection requirement is met and three wastes are not discharged basically, etc. The sulphuric acid ester ion liquid has the characteristics of the general ion liquid of low steam pressure, good thermal stability, uneasy volatilization, etc. and has industrial application prospect.

The invention discloses a preparation method of p-aminophenyl-beta-ethoxyl sulphone sulphate. The preparation method comprises the following steps of: adding p-aminophenyl and mercaptoethanol into an N, N-dimethyl formamide solvent to dissolve, and adding NaOH to carry out reaction; filtering, distilling under reduced pressure to obtain p-aminophenyl-beta-ethoxyl thioether after reaction; adding the p-aminophenyl-beta-ethoxyl thioether and a catalyst into an oxidization kettle, adding hydrogen peroxide to carry out reaction, and cooling and separating out an oxidized and crystallized material after the reaction; washing the oxidized and crystallized material, adding water and a palladium-carbon catalyst after washing to carry out hydrogenation reaction, thus obtaining an hydrogenation product and water after the reaction; adding pure sulfuric acid to carry out esterification reaction, and crushing the obtained product to obtain the p-aminophenyl-beta-ethoxyl sulphone sulphate. In the preparation method disclosed by the invention, dosage of the adopted hydrogen peroxide and the palladium-carbon catalyst is less, especially, dosage of the palladium-carbon catalyst is greatly reduced, so that production cost is greatly lowered; and moreover, output of three wastes is lower, yield is higher, economical benefits and social benefits are remarkable.