30 results about "Free Radical Process" patented technology

The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and / or fluorinated propenes or higher alkenes from the reaction of chlorinated and / or fluorinated alkanes and chlorinated and / or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process.

The invention concerns a copolymer of ethylene oxide and at least one substituted oxirane carrying a cross-linkable function. The copolymer comprises ethylene oxide, —O—CH2—CHR— units in which R is a substituent containing a reactive function which is cross-linkable by free radical process, R may be different from one unit to the other, and possibly —O—CH2—CHR′— units in which R′ is a substituent containing no reactive function which is cross-linkable by means of a free radical process, R′ may be different from one unit to the other. It is characterized by an excellent polymolecularity index I=Mw / Mn and a statistical distribution of the different monomer units. The copolymer is prepared by an anionic copolymerization process. The copolymer is useful for preparing a solid electrolyte having good mechanical properties, a good cationic conductivity and a good chemical compatibility with the electrodes of a generator operating with alkali metals such as lithium and sodium.

The invention concerns a copolymer of ethylene oxide and at least one substituted oxirane carrying a cross-linkable function. The copolymer comprises ethylene oxide, —O—CH2—CHR— units in which R is a substituent containing a reactive function which is cross-linkable by free radical process, and possibly —O—CH2—CHR′— units in which R′ is a substituent containing no reactive function which is cross-linkable by means of a free radical process, It is characterized by an excellent polydispersity index I=Mw / Mn and a random distribution of the different monomer units. The copolymer is prepared by an anionic copolymerization process. The copolymer is useful for preparing a solid electrolyte having good mechanical properties, a good cationic conductivity and a good chemical compatibility with the electrodes of a generator operating with alkali metals such as lithium and sodium.

The present invention relates to acrylic block copolymers synthesized by a controlled free-radical process, and their use as low temperature flow modifiers in oil-based compositions. They are especially useful in modifying the low temperature flow behavior in lubricating oils. The acrylic copolymers are especially useful as pour point depressants in lubricating oil.

A composite sheet is manufactured by depositing a multi-layer coating on the outer surface of a substrate, the coating comprising a metal layer and an outer polymeric layer formed from a precursor comprising a composition capable of being polymerized and / or cross-linked by free-radical processes. After the precursor is applied, the composite sheet is exposed to beam radiation and ozone, which both promote conversion of the precursor. The function of the cured polymeric layer includes protecting the metal layer from corrosion. The use of both beam radiation and ozone promotes substantially full conversion and curing of the precursor, even in portions of the substrate that are geometrically shadowed from incident beam radiation.

The present invention relates to acrylic block polymers, either block copolymers or homopolymers, synthesized by a controlled free-radical process, and their use as low temperature flow modifiers in bio-derived fuel compositions. They are especially useful in modifying the low temperature flow behavior in bio-derived fuels. The acrylic polymers are especially useful as cold filter plugging control additives in bio-derived fuels.

A simple, clean and high-effective synthetic method of a novel N-methylated sulfoximine derivative is provided in the invention. The invention relates to the fields of pesticides, organic chemical engineering and fine chemical engineering. The method essentially is an organic synthesis reaction that a methyl free radical, which is generated from peroxides, and a sulfoximine compound are subjected to free radical coupling to form new C-N bonds. The method includes the step of carrying out a reaction to obtain the N-methylated sulfoximine derivative in a common organic solvent under a heating condition from the raw materials including diphenyl sulfoximine and a methylating reagent (peroxides) under the catalysis by copper. The method is 2-20 h in reaction time under a heating and stirring condition. The molar ratio of the raw materials is that the diphenyl sulfoximine to the methylating reagent is 1:0.5-3.0. The raw materials are reacted under the heating condition and then reaction products are subjected to simple after treatments to obtain the N-methylated sulfoximine derivative at a yield being 36-87%. The invention develops a series of N-methylating methods based on a free radical process to prepare a series of N-methylated sulfoximine derivatives. The method is simple in operation and after treatments, and is simple and practical in synthesis of these compounds.

The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and / or fluorinated propenes or higher alkenes from the reaction of chlorinated and / or fluorinated alkanes and chlorinated and / or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process

Decomposition of iodonium salts by a free radical process has been identified as a significant factor in the observed yield variability of fluoridation reactions using said iodonium salts. Accordingly, the inclusion of a free radical trap in the reaction mixture blocks the radical chain decomposition pathway for iodonium salts such that only the reaction leading to fluoridation can occur and the yield of aryl fluoride becomes high and reproducible. The reaction may also be carried out on solid phase. In both the solution and the solid phase the preferred method of the present invention is radiofluoridation.

The invention discloses a method for preparing oxalate: using diazo compounds and α-Br ketones as reaction substrates, and using O 2 As oxygen source and oxidizing agent, visible light is used as energy source, organic dye is used as photocatalyst, and oxalate is obtained through free radical process in organic solvent. The method used in the present invention has the following characteristics: the reaction is more environmentally friendly and economical, the substrate has wider applicability, the later functional group is easier, the reaction condition is mild, it can be carried out in the air, the amount of photocatalyst is less, and the post-treatment is simple. At the same time, the reactants, photocatalysts and other raw materials used in the present invention are cheap and easy to obtain, the reaction composition is reasonable, no ligand is needed, the atom economy is high, the reaction steps are few, and a higher yield can be obtained with only one step of reaction, which is in line with contemporary green The requirements and direction of chemistry and sustainable development are suitable for the synthesis of asymmetrically substituted oxalates that are difficult to synthesize by traditional methods.

A simple, clean and efficient method for preparing N-methylated sulfoximine derivatives is invented, which relates to the fields of pesticides, organic chemicals and fine chemicals. The method is essentially an organic synthesis reaction in which methyl radicals generated from peroxides are coupled with sulfoximine compounds to form new carbon-nitrogen bonds. The raw materials used are diphenyl sulfoximine and methylating reagent (peroxide) under the catalysis of copper, in common organic solvents, under heating conditions, react to obtain N-methylated sulfoximine derivatives thing. Using the method proposed by the present invention under heating and stirring conditions, the reaction time is 2-20 hours. The molar ratio of the raw materials is diphenylsulfoximine: methylating reagent = 1:0.5-3.0, reacting under heating conditions, and then undergoing simple post-treatment, the corresponding N-methyl can be obtained in a higher yield sulfoximine derivatives with a yield of 36‑87%. The present invention develops a novel N-methylation method based on a free radical process to obtain a series of N-methyl sulfoximine derivatives, which is simple in operation and convenient in post-processing. It is a simple and practical method for synthesizing such compounds.

The invention provides a substrate processing device and a heat shield. The substrate processing apparatus can uniformly perform processing using radicals on a substrate even when processing is repeated. The process module (13) has: a processing container (28) for accommodating the wafer (W); (W); a heat shield (48), which is configured between the partition plate (37) and the wafer (W), and the partition plate (37) is selectively placed in the plasma generation space (P) Radicals in the generated plasma permeate toward the wafer (W), and the heat shield (48) is arranged in a manner facing the wafer (W). )connect.

This invention relates to a method for prparing temperature-sensitive polyvinylidene flourine intelligent membrane. The method is: NIPA as grafted monomer, PVDF as macromelocular initiator, cuprous chloride as catalyst,4,4 demethyl 2,2 bipyridine as ligand, using atom transfer free radical process, preparation of temperature-sensitive polyvinylidene flourine intelligent membrane comprising: in reaction kettle, adding 7-13% PVDF(WT%) and solvent N-methyl-2-pyrrolidone,heating to 50 deg. C to make it solve completely; then adding grafted monomer NIPA, its mol ratio with cuprous chloride is 2000:1-2500:1,filling nitrogen gas 30mins. at stirring, and separately adding 0.20-025g ligand 4,4-dimethyl 2,2-bipyridine and 0.04-0.06g catalyst cupous chloride, stirring and heating to 80-120deg.C,constant reaction 19-25 hrs; then washing reaction product using pure water to obtain light brown solid, filtering and 80 C degree drying to obtain finish product.

A semiconductor substrate processing system includes a processing chamber and a substrate support defined to support a substrate in the processing chamber. The system also includes a plasma chamber defined separate from the processing chamber. The plasma chamber is defined to generate plasma. The system also includes a plurality of fluid transfer passages fluidly connecting the plasma chamber and the processing chamber. The plurality of fluid delivery pathways are defined to supply reactive components of the plasma from the plasma chamber to the processing chamber. The system further includes an electron injection device for injecting electrons into the processing chamber to control the energy distribution of the electrons within the processing chamber to thereby control the ion-to-radical density ratio within the processing chamber. In an embodiment, an electron beam source is defined to deliver an electron beam through the process chamber above and across the substrate support.

The invention relates to the application of a catalyst using the waste adsorbent after adsorption-analysis as a raw material in the treatment of high-salt organic wastewater by activating persulfate. In the present invention, the discarded adsorbent after repeated adsorption of heavy metal ions-desorption is mixed with a nitrogen source, and the discarded adsorbent-based catalyst is obtained after pyrolysis under anaerobic conditions, and the discarded adsorbent-based catalyst is introduced into high-salt organic wastewater, and added Sulfate is used to activate sulfate to generate non-free radicals, and efficiently degrade persistent organic pollutants in high-salt organic wastewater through non-free radicals. Sulfate provides a new way to degrade pollutants through a non-free radical process, which is simple to operate and low in cost, and can effectively help solve environmental problems and can be used for waste.

The invention discloses a highly selective deuteration method for 2-methyl nitrogen heterocyclic compounds. The method is carried out as follows: the 2-methyl nitrogen-containing compound shown in formula I, formula II or formula III Heterocyclic compounds, oxidants, and additives are added to a dry Schlenk reaction tube. Under protective gas conditions, deuterium water and organic solvents are added to the above reaction tube, and the reaction is stirred at 50-100°C for 2-12 hours to obtain the reaction The solution is post-treated to obtain deuterated nitrogen-containing heterocyclic rings shown in formula IV, formula V or formula VI respectively. The method of the present invention is based on a free radical process, is efficient, and can synthesize methyl-d3 substituted nitrogen-containing heterocyclic compounds that are difficult to prepare by existing methods, and the deuteration rate of the reaction is high; it is carried out under neutral conditions, and requires equipment. low; using a catalytic amount of oxidant, the additives are cheap and easy to obtain; the reaction conditions are relatively mild, energy consumption is saved; the yield is high, the substrate universality is strong, and the operation is simple and so on.