102 results about "Thiocarbonate" patented technology

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.

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.

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.

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 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.

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.