102 results about "Thiocarbonate" patented technology

Aspects of the invention include 2′ protected nucleoside monomers that are protected at the 2′ site with thiocarbon protecting groups. Thiocarbon protecting groups of interest include thiocarbonate, thionocarbonate, dithiocarbonate groups, as well as thionocarbamate protecting groups. Aspects of the invention further include nucleic acids that include the protecting groups of the invention, as well as methods of synthesizing nucleic acids using the protecting groups of the invention.

Nucleoside monomers, nucleic acids, e.g., oligonucleotides and polynucleotides, methods of making each, methods of deprotecting each, and the like are disclosed herein. Aspects of the invention include 2′ silyl containing thiocarbonate protecting groups. Corresponding compositions and methods are provided.

Thiocarbonate compounds which, in one embodiment, are utilized as a rheology modifier or associative thickener. The thiocarbonate compounds thicken or increase the viscosity of a composition, preferably an aqueous composition when used in an effective amount. In one preferred embodiment, the thiocarbonate compounds include at least one hydrophilic group containing repeat unit such as derived from acrylic acid, and at least one hydrophobic group to enhance association with other compounds and thus increase viscosity of a composition. Aqueous composition comprising a latex and thiocarbonate associative thickeners are described.

Block copolymers comprising polyols and / or siloxanes and vinyl-thiocarbonate blocks can be made by reacting a thiocarbonate compound such as a dithio- or trithiocarbonate with generally any hydroxyl-terminated polysiloxane via an esterification reaction. The polysiloxane can have a very wide number average molecular weight range and can be chain extended and / or crosslinked as by using a polyisocyanate or a polycarboxylic acid. Desirably, vinyl compounds are then reacted in situ into the thiocarbonate to increase molecular weight thereof. The block copolymers can be used in personal care applications.

The invention relates to a 2-(2'-hydroxyphenyl) benzothiazole chelated zinc derivative as well as a preparation method and an application thereof, belonging to the field of organic electroluminescentluminescent materials. The preparation method of the derivative comprises the following steps: firstly, introducing different substituent groups with electron-withdrawing or electron-donating capability in a benzothiazole benzene ring or a hydroxyphenyl benzene ring of a 2-(2'-hydroxyphenyl) benzothiazole matrix to obtain a substituted 2-(2'-hydroxyphenyl) benzothiazole ligand; coordinating with diatomic zinc to form a corresponding complex, and the like. The substituted 2-(2'-hydroxyphenyl) benzothiazole ligand can be prepared by a plurality of reactions, such as substituted aniline acylation, hydroxyl protection, hydroxyl thiocarbonate, Jacobson cyclization while hydroxyl deprotection, and the like or prepared by a direct reaction of O-amino thiophenol and substituted ortho-hydroxybenzoic acid. When applied to an organic electroluminescent luminescent device as an electronic transmission layer, the derivative has favorable electronic transmission performance and has performance superior to the most common electronic transmission material 8-hydroxyquinoline aluminum.

The invention discloses a method for treating the purification copper-removing slag of a nickel electrolysis anode solution. The method comprises the following steps: treating the copper-removing slag generated in the nickel thiocarbonate method copper-removing process with a copper-containing solution to leach nickel in the copper-removing slag, obtain copper-removing slag of which copper-nickel ratio is above 150 and convert the leachate to a nickel-containing solution, then using the nickel-containing solution to react with a thiocarbonate solution and prepare nickel thiocarbonate, and using the prepared nickel thiocarbonate to remove copper in the nickel electrolysis anode solution. In the copper-removing process, only copper in the nickel electrolysis anode solution is required to be removed completely without considering the copper-nickel ratio of the copper-removing slag. A lot of copper-removing agent is added to ensure that even the highest concentration of copper in the solution can be removed completely. Therefore, the copper concentration of the solution is not required to be accurately controlled before the copper-removing process and the operations are performed easily. Meanwhile, a lot of copper-removing agent is added and the copper-removing solution with extremely lower copper concentration can be obtained, compared with the copper-removing effect by adding a defined amount of the copper-removing agent. As whether nickel exceeds the standard is not considered, the copper-removing operation can be easily controlled.

The invention relates to a method for recovering heavy metal in electrolytic manganese passivating wastewater. The method mainly comprises the following processes: firstly, regulating the pH value ofthe electrolytic manganese passivating wastewater by alkali, then adding carbonate into the electrolytic manganese passivating wastewater, filtering after finishing the reaction, regulating the pH value of the solution to 8-12, then adding peroxide and filtering after finishing the reaction; afterwards, regulating the pH value of the solution to 2.0-7.0 and adding quinary-sulfocarbonate to processsexavalent chromium. The invention can recover and utilize manganese and chromium ions in the electrolytic manganese passivating wastewater in a resource way and also can eliminate the generation ofdangerous solid wastes. Compared with the prior art, the invention also has the advantages of low production cost, easy operation, continuous operation and convenient realization of industrialized production.

Thiocarbonate compounds are reacted with various polyols to introduce hydroxyl end groups thereto which can be subsequently reacted with urethane forming compounds to form various polyurethanes including block copolymers thereof.

The present invention discloses mining collector compositions containing sodium metabisulfite and a thiocarbonate compound. Flotation processes for recovering molybdenum from a copper-molybdenum concentrate using the collector compositions also are disclosed.

Thiocarbonate compounds which, in one embodiment, are utilized as a rheology modifier or associative thickener. The thiocarbonate compounds thicken or increase the viscosity of a composition, preferably an aqueous composition when used in an effective amount. In one preferred embodiment, the thiocarbonate compounds include at least one hydrophilic group containing repeat unit such as derived from acrylic acid, and at least one hydrophobic group to enhance association with other compounds and thus increase viscosity of a composition. Aqueous composition comprising a latex and thiocarbonate associative thickeners are described.

Carboxylate terminated thiocarbonates are reacted with a polyfunctional alcohol to form a hydroxyl-terminated thiocarbonate compound.

The present invention relates to adhesion-improved, curable compositions comprising a cyclic ether, a cyclic thiocarbonate, an amine and a carboxylic acid. A method of making such compositions and their use in adhesives, sealants and coatings are also provided.

Thiocarbonate compounds are reacted with various polyols to introduce hydroxyl end groups thereto which can be subsequently reacted with urethane forming compounds to form various polyurethanes including block copolymers thereof.

In various embodiments of the invention, novel compositions having a polynucleotide bound to a substrate via a cleavable linker are provided, and methods of cleaving a polynucleotide from a substrate are provided.

Thiocarbonate compounds which, in one embodiment, are utilized as a rheology modifier or associative thickener. The thiocarbonate compounds thicken or increase the viscosity of a composition, preferably an aqueous composition when used in an effective amount. In one preferred embodiment, the thiocarbonate compounds include at least one hydrophilic group containing repeat unit such as derived from acrylic acid, and at least one hydrophobic group to enhance association with other compounds and thus increase viscosity of a composition. Aqueous composition comprising a latex and thiocarbonate associative thickeners are described.

Thiocarbonate compounds are reacted with various polyols to introduce hydroxyl end groups thereto which can be subsequently reacted with urethane forming compounds to form various polyurethanes including block copolymers thereof.

The invention discloses a method for preparing fluorine-containing waterproof and oil-proof agent through emulsifier-free emulsion polymerization. The fluorine-containing polyacrylate fabric waterproof and oil-proof agent is prepared by taking thiocarbonate active end group-containing fluorine-containing amphiphilic block copolymer as an emulsifier. Compared with a micromolecular emulsifier, the fluorine-containing polyacrylate emulsifier-free emulsion prepared by adopting the amphiphilic block copolymers not only has high stability and high solid content, but also has excellent waterproof and oil-proof properties. Meanwhile, an organic solvent is not used in the method, so that the harm of the organic solvent on human health and environments can be avoided. In addition, a crosslinked monomer is selected to improve the washability, and enables the polymer to have reactive hydroxyl group which can be crosslinked with a reaction group on fiber or be self-crosslinked, so that the adhesion degree of a finishing agent on the fiber can be enhanced, and the washability can be improved.

The invention relates to high-selectivity mercury ion colorimetric fluorescence probes. Specifically, the probes provided by the invention are thiocarbonate compounds, and the compounds can be used as the mercury ion colorimetric fluorescence probes for detecting mercury ions. The structure formula of the compounds is described in the description. The probes can realize at least one of the technical effects of realizing high selective identification of the mercury ions, more rapidly responding to the mercury ions, being good in water solubility, being stable in properties and being stored for a long time, and having higher anti-interference ability.

The invention relates to a method for catalyzing the conversion of carbonyl sulfide by using an organic catalyst to synthesize a five-membered sulfur heterocyclic compound and belongs to the technicalfields of organic synthesis, pesticides as well as medicinal and chemical synthesis. The method comprises the steps: adding a propargyl derivative and a solvent into a high-pressure kettle; then, adding an organic catalyst; introducing carbonyl sulfide gas; carrying out stirring under the condition of 25-60 DEG C for 1-24h; after the reaction is ended, carrying out cooling to the room temperature, slowly releasing unreacted carbonyl sulfide gas, and draining the solvent to obtain a crude product; and carrying out purification to obtain 4-alkylenecyclic thiocarbonate, 5-alkylene-1,3-thiazolidane-2-ketone and 5-alkylene-1,3-thiazolidane-2,4-diketone compounds. In the method, a traditional sulfur source is replaced with carbonyl sulfide, the reaction has the characteristics of cleanness, mild reaction condition, high functional group tolerance, high conversion rate and stereoselectivity, and therefore, the method is widely applied to organic synthesis, pesticides and medicines.

The invention relates to the technical fields of soil remediation and environmental protection, in particular to a heavy metal contaminated soil / bottom mud stabilizer. The heavy metal contaminated soil / bottom mud stabilizer is prepared from soluble ferric salt, dibutyl dithiophosphate and butyl dithiocarbonate in proportion. A heavy metal repair agent is low in cost, can effectively eliminate harm of heavy metal ions in soil, and has relatively good stabilizing effect on arsenic and other heavy metals in arsenic-containing composite heavy metal contaminated bottom mud under an acid condition, so that the defect that an existing product is poor in stabilizing effect on the arsenic-containing composite heavy metal contaminated bottom mud is overcome. The heavy metal contaminated soil / bottom mud stabilizer can be applied to stabilizing treatment of heavy metal contaminated muddy bottom of arsenic, lead, cadmium, copper, zinc and chromium. The heavy metal contaminated soil / bottom mud treated by the stabilizer can be used for roadbed building filler. The heavy metal contaminated soil / bottom mud stabilizer has the effects of protecting the environment, changing waste into things of value and increasing a waste utilization rate, and has a considerable economic value.

The invention discloses a method and device for deeply removing copper of nickel thiocarbonate from a nickel-containing solution. Substantially, the nickel thiocarbonate after pulping is used as a copper removal agent; and the copper removal agent is automatically added through a mechanical mixing pump and is uniformly mixed with the nickel-containing solution in a pipeline reactor to remove copper. The method can realize continuous copper removal in the closed environment, the copper removal efficiency is high, and the concentration of the liquid cooper after copper removal is lower than 3mg / l. The copper-nickel ratio in the copper removal slag is greater than 15, thereby completely meeting the production requirements.

Various embodiments disclosed relate to sacrificial materials and methods of using the same. Various embodiments provide objects having the sacrificial material at least partially removed therefrom, and methods of making the same. Various embodiments provide sacrificial adhesives, sacrificial mechanical connectors, and methods of using the same. The sacrificial material can include a polymer including a repeating unit including a substituted or unsubstituted (C2-C20)hydrocarbylene and at least one of carboxylate, carbonate, carbamate, thiocarbonate, and thiocarbamate. The method can include exposing the sacrificial material to at least one of heat and acid, such that at least some of the sacrificial material degrades. The method can include removing at least some of the degraded sacrificial material.

Aspects of the invention include 2′ protected nucleoside monomers that are protected at the 2′ site with thiocarbon protecting groups. Thiocarbon protecting groups of interest include thiocarbonate, thionocarbonate, dithiocarbonate groups, as well as thionocarbamate protecting groups. Aspects of the invention further include nucleic acids that include the protecting groups of the invention, as well as methods of synthesizing nucleic acids using the protecting groups of the invention.

The invention is directed to thiocarbonate compounds of Formula (I)-(III) and methods of treating atherosclerosis, neuropathy, nephropathy, retinopathy, inflammatory disorders, COPD, cardiovascular diseases, metabolic disorders, type I diabetes mellitus, type II diabetes mellitus, LADA, Wolfram Syndrome 1, Wolcott-Rallison syndrome, metabolic syndrome, dyslipidemia, hyperglycemia, or insulin resistance. The compounds of the invention are also useful for protecting pancreatic beta-cells and for reducing free fatty acids, triglycerides, advanced glycated end products, ROS, lipid peroxidation, tissue and plasma TNFalpha and IL6 levels, or for delaying or preventing cardiovascular complications associated with atherosclerosis.

Carboxylate terminated thiocarbonates are reacted with a polyfunctional alcohol to form a hydroxyl-terminated thiocarbonate compound.

The invention discloses a method for preparing thionocarbamate and trithiocarbonate. The method comprises the following steps: carrying out an esterification reaction on alkyl xanthate salt and a halogenation reagent to obtain alkyl xanthate ester; carrying out an aminolysis reaction on the alkyl xanthate ester and fatty amine to obtain a thionocarbamate and mercaptan compound mixture; and carrying out an addition reaction on the thionocarbamate and mercaptan compound mixture and carbon disulfide in the presence of caustic alkali, and carrying out solid-liquid separation to obtain a liquid phase which is the thionocarbamate product and a solid phase which is the trithiocarbonate product. The products prepared through the preparation method have high yield and high purity, and the method allows the two high-efficiency collectors comprising thionocarbamate and trithiocarbonate to be simultaneously produced, and has the advantages of easiness in separation of the products, high atom economy property, low production cost, and easiness in realization of industrial production.

The invention discloses a synthesis method of reagent nickel thiocarbonate for deeply removing copper from a nickel solution. The technical scheme is as follows: soluble sulfide CS2 and sulfur (S) are used as raw materials to firstly synthesize a thiocarbonate solution, and the thiocarbonate solution reacts with a nickel-containing solution to generate nickel thiocarbonate. The nickel thiocarbonate can efficiently removing copper from nickel electrolysis anolyte, so that the copper concentration is lower than 3 mg / L, and the ratio of copper to nickel in the copper removal slag is higher than 15:1.

The invention belongs to the field of organic synthesis and discloses a terminal alkynyl containing RAFT chain transfer agent and a preparation method and application thereof.The RAFT chain transfer agent has a structure shown in the description.The preparation method comprises the steps that tert-butyl mercaptan serves as a start raw material and reacts with carbon disulfide under the action of alkali to form trithiocarbonate; under the alkaline catalytic action, the obtained trithiocarbonate reacts with bromo propionate, and after acidification, terminal carboxylgroup containing RAFT chain transfer agent is obtained; the terminal carboxylgroup containing RAFT chain transfer agent is re-crystalized through n-hexane, and then under the action of EDC.HC1 and DMAP, the terminal carboxylgroup containing RAFT chain transfer agent and propargyl alcohol generate terminal alkynyl containing trithiocarbonate.The rough product is subjected to extraction and column chromatography, and then the product is obtained.The terminal alkynyl containing RAFT chain transfer agent can achieve RAFT polymerization and click reaction and prepare block polymer with specific structures and functions.