125 results about "Thiocarboxylic acid" patented technology

A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing monomer with a coordination catalyst to form a reactive polymer; and (ii) reacting the reactive polymer with a carboxylic or thiocarboxylic ester containing a silylated amino group.

The invention provides a method for polishing one or more layers of a multi-layer substrate that includes a first metal layer and a second layer comprising (i) contacting the first metal layer with a polishing system comprising a liquid carrier, at least one oxidizing agent, at least one polishing additive that increases the rate at which the system polishes at least one layer of the substrate, wherein the polishing additive is selected from the group consisting of pyrophosphates, condensed phosphates, phosphonic acids and salts thereof, amines, amino alcohols, amides, imines, imino acids, nitriles, nitros, thiols thioesters, thioethers, carbothiolic acids, carbothionic acids, thiocarboxylic acids, thiosalicylic acids, and mixtures thereof, and a polishing pad and / or an abrasive, and (ii) polishing the first metal layer with the system until at least a portion of the first metal layer is removed from the substrate.

A fiber capable of forming a metal chelate and a process for producing the same are disclosed, wherein the fiber is characterized in that at least one metal chelate-forming compound selected from the group consisting of aminocarboxylic acid. aminocarboxylic acid, thiocarboxylic acid and phosphoric acid. which are reactive with a glycidyl group, is bonded to a molecule of a synthetic fiber through a crosslinkable compound having a reactive double bond and a glycidyl group in its molecule. The chelate-forming fiber is excellent in capturing harmful heavy metal ions and can be easily produced in a simple and safe way at a low cost.

The invention provides a system for polishing one or more layers of a multi-layer substrate that includes a first metal layer and a second layer comprising (i) a liquid carrier, (ii) at least one oxidizing agent, (iii) at least one polishing additive that increases the rate at which the system polishes at least one layer of the substrate, wherein the polishing additive is selected from the group consisting of pyrophosphates, condensed phosphates, phosphonic acids and salts thereof, amines, amino alcohols, amides, imines, imino acids, nitriles, nitros, thiols, thioesters, thioethers, carbothiolic acids, carbothionic acids, thiocarboxylic acids, thiosalicylic acids, hydroxylates, carbonylates, carboxylates, and acids thereof, and mixtures thereof, (iv) at least one stopping compound, and (v) a polishing pad and / or an abrasive. The invention also provides a method of polishing a substrate comprising contacting a surface of a substrate with the system and polishing at least a portion of the substrate therewith. Moreover, the invention provides a method for polishing one or more layers of a multi-layer substrate that includes a first metal layer and a second layer comprising (a) contacting the first metal layer with the system, and (b) polishing the first metal layer with the system until at least a portion of the first metal layer is removed from the substrate.

The invention discloses a latent polythiol curing agent, and a synthetic method and an application of the latent polythiol curing agent. The molecule of the latent polythiol curing agent comprises more than one beta-hydroxyl carbothioate structural unit shown in the description. In the structural unit, R1 is at least selected from (CH2)nCH3, C(CH3)3, and phenyl, wherein n is any integer selected from 0-6. The synthetic method comprises: taking an epoxy-group-containing compound and carbothioic acid, the mole ratio of which is from 1:1.01 to 1:1.5, performing a reaction at -10 DEG C to 30 DEG C for 1-24 h, and removing excessive carbothioic acid to obtain the latent polythiol curing agent. The latent polythiol curing agent can react with an epoxy resin to form a polymer. The latent polythiol curing agent can be stably stored for a long time and is free of sulfur stink. The synthetic method is simple, fast, and efficient, and is low in cost. The latent polythiol curing agent has bright application prospects in the fields, such as thermosetting plastics, coatings, and elastomer.

The invention discloses an acridinium ester derivative, a synthesis method and application thereof. The chemiluminescent acridinium ester derivative provided by the invention has a structural formula shown as formula I. The invention further discloses a synthesis method for the compound shown as formula I, and the method includes: (1) synthesizing acridine-9-thiocarboxylic acid p-trifluoromethylbenzene ester; (2) synthesizing 10-methyl-acridine-9-thiocarboxylic acid p-trifluoromethylbenzene ester; (3) synthesizing 10-methyl-9, 10-dihydroacridine-9-thiocarboxylic acid p-trifluoromethylbenzene ester; and (4) synthesizing TfS-APS. The acridinium ester derivative provided by the invention can be used as an immunoassay tracer to a chemiluminescence immunoassay reagent system with alkaline phosphatase (ALP) as the marker enzyme. The application effect in a kit proves that the acridinium ester derivative involved in the invention can detect 1*10<-19>mol ALP molecules, and has the advantages of high sensitivity, long luminescence duration, simple use, constant intensity under room temperature condition, and no need for precise temperature control, etc.

A fiber capable of forming a metal chelate and a process for producing the same are disclosed, wherein the fiber is characterized in that at least one metal chelate-forming compound selected from the group consisting of aminodicarboxylic acids, aminocarboxylic acids, thiocarboxylic acids and phosphoric acid, which are reactive with a glycidyl group, is bonded to a molecule of a natural fiber or regenerated fiber through a crosslinkable compound having a reactive double bond and a glycidyl group in its molecule. There are also disclosed a method of capturing metal ions using the fiber and a metal chelate fiber which can effectively make use of the characteristics of the metals and can be easily discarded or incinerated.

The invention provides a novel preparation method for taurine, substituted taurine and N-acylated derivates. The method comprises taking aziridine and substituted aziridine as raw material, obtaining N-acylated taurine derivates by opening loop and oxygenizing, hydrolyzing N-acylated taurine derivates to obtain taurine or substituted taurine. The raw material of the preparation method is simple and easy to get and prepare, especially convenient to separate and purify, and can be used for the preparation of optical activity substituted taurine and N-acyl group substituted taurine. The obtained compounds can be used as nutrient substance, medicament, enzyme inhibitors, antibacterial agents, surface active agents, plant growth regulators and raw materials for preparing sulfonopeptides.

The invention relates to a novel cathode material for lithium secondary batteries and the lithium secondary batteries with the cathode material. The cathode material provided by the invention is a thiocarbonyl compound, at least contains a carbon-sulfur double bond, and is at least one component selected from the group consisting of thiocarboxylic acid, thioamide, thioxo aldehyde, thioxo ketone, thioxo isocyanate, thioxo acid anhydride and thioacyl peroxide, and is prepared by the reaction of metal sulfide, carbonyl-containing carboxylic acid or amide, aldehyde, ketone, isocyanate, acid anhydride and acyl peroxide. When the cathode material is applied in lithium secondary batteries, the first-time discharge capacity of the lithium secondary batteries is greater than 600mAh / g, and the discharge capacity is greater than 150mAh / g after discharging 100 times for 10 C.

The invention discloses an acetylene amide mediated method for selectively synthesizing carbonyl thioesters and ordinary thioesters. The ordinary thioesters are further used for preparing amides and peptides, and the carbonyl thioesters are used for preparing thioamides and thiopeptides. An addition reaction is carried out between acetylene amide in m-xylene and thiocarboxylic acid to selectivelyobtain the carbonyl thioester and ordinary thioester of which the ratio is 3:1 under the condition of 40 DEG C below zero; the ordinary thioesters can carry out a combination reaction with amines to produce amides and peptides; and the carbonyl can carry out a combination reaction with the amines to produce thioamides and thiopeptides. The method disclosed by the invention is mild in reaction conditions, free of any metal catalyst, high in reaction speed, high in yield, simple in operation and wide in application range. With respect to chiral thiocarboxylic acid in a position alpha of carboxyl, when thioamide bonds or thiopeptide bonds are formed from the carbonyl thioesters or when amido bonds or peptide bonds are formed from the ordinary thioesters, any racemization phenomenon can be avoided.

The invention relates to a novel iridium complex with a nitrogen heterocyclic ring as a main ligand and a thiocarboxylic acid compound as an auxiliary ligand. The nitrogen heterocyclic ring and a carbon-sulfur group in an iridium complex molecule help to improve the electron mobility of the material and control a luminescence color, so the injection and transmission of holes and electrons are balanced, the current carrier recombination region is broadened, the device efficiency is improved and the efficiency roll-off is reduced. The iridium complex has the advantages of simple synthesis, stable chemical property, easy sublimation and purification, and excellent device performance, and provides convenience for the acquisition of high-efficiency organic electroluminescent devices and application in the technical fields of lighting and display.

The present invention relates to a method for determining the concentration of iron ions in a hydrocarbon composition, as well as reagents and kits for use in such methods. The method utilises a thiocarboxylic acid having formula (I) which reduces the ferric ions and complexes ferrous ions producing a colored solution, which can be analysed to determine the amount of iron ions in the starting sample.

An aqueous process is described in which thiocarboxylate silane is produced from haloalkyl silane by reaction of the haloalkyl silane with an aqueous solution of thiocarboxylate salt. Also described is a process for the preparation of aqueous thiocarboxylate salt from a sulfide and / or hydrosulfide and an acid chloride and / or acid anhydride.