Abstract: Continuous photochemical production of high purity linear mercaptan and sulfide-containing compositions.

Abstract: Continuous photochemical production of high purity linear mercaptan and sulfide-containing compositions.

Abstract: The present invention discloses high pressure flow reactor vessels and associated systems. Also disclosed are processes for producing thiol compounds and sulfide compounds utilizing these flow reactor vessels.

Abstract: The present invention discloses high pressure flow reactor vessels and associated systems. Also disclosed are processes for producing thiol compounds and sulfide compounds utilizing these flow reactor vessels.

Abstract: Provided is an oxygen barrier coating composition includes a resin including a compound of the following formula: where R1 is an alkyl, cycloalkyl, aryl, alkyl aryl, glycol or polyol group, where the alkyl, cycloalkyl, aryl, alkyl aryl, glycol or polyol group is substituted with one or more glycidyl groups, the alkyl group of R1 is further substituted with one or more OH, cycloalkyl, aryl, heteroaryl or glycidyl ethers or combinations thereof, and the cycloalkyl, aryl, alkyl aryl, glycol or polyol group of R1 optionally is substituted with one or more alkyl, OH, cycloalkyl, aryl, heteroaryl or glycidyl ethers or combinations thereof, and R2 is an alkyl, cycloalkyl, aryl or heteroaryl group, where the alkyl, cycloalkyl, aryl or heteroaryl group is substituted with one or more mercapto groups, and the aryl, alkyl aryl, alkyl, cycloalkyl or heteroaryl group optionally is substituted with one or more alkyl, OH, cycloalkyl, aryl, heteroaryl or glycidyl ethers or combinations thereof.

Abstract: The present invention discloses polythiol compositions containing intermolecular sulfide compounds and at least one of 5-(2-mercaptoethyl)norbornane-2-thiol and 5-(2-mercaptoethyl)norbornane-3-thiol. These polythiol compositions can be derived from 5-vinylnorborn-2-ene, and are often used in formulations for adhesives and other end-use applications.

Abstract: The present invention discloses high pressure flow reactor vessels and associated systems. Also disclosed are processes for producing thiol compounds and sulfide compounds utilizing these flow reactor vessels.

Abstract: This invention relates to the design of a process by intermittent dielectric heating combined with a recycling system. This process consists in subjecting reagents to electromagnetic waves selected in the frequencies ranging between 300 GHz and 3 MHz intermittently using a recycling system. This process enables the treatment of oils that are hardly absorbent as well as great investment savings. This process enables operation on different scales, whether in laboratories, on a semi-industrial or industrial scale, without forfeiting the advantages of continuous dielectric heating.

Abstract: Efficient method for preparing sulfonium photoacid generators (PAGs) by microwave-assisted reaction of diarylsufides in the presence of alkylaryliodonium salts. Microwave-assisted synthesis of the PAGs is significantly faster, reducing reaction time with less energy consumption. Reaction times using the microwave-assisted synthesis are in a range of from 90 to 420 faster than conventional thermal conditions. The photoacid quantum yields of several salts prepared by the microwave reaction were measured; the photoacid quantum yields of new sulfonium PAGs were in a range from 0.01 to 0.4 times greater than yields from conventional synthesis. Incorporating a nitro group in the structures of the sulfonium salts increased photoacid quantum yield, induced intersystem crossing and increased the efficiency of photoacid generation compounds.

Abstract: Methods for generating metallic particles in situ in a polymer are disclosed. A method includes (a) contacting the polymer with a solution comprising (i) a solvent, (ii) a metal salt, and (iii) a free radical generator; (b) removing the polymer from the solution; and (c) exposing the polymer to actinic radiation. Polymer composites and polymer nanocomposites comprising inorganic particulates comprising metallic particles generated in the polymer are also disclosed.

Abstract: The invention relates to a continuous method for producing amides of aromatic carboxylic acids, according to which at least one aromatic carboxylic acid of formula (I) Ar—COON ??(I) wherein Ar is an optionally substituted aryl radical comprising between 5 and 50 atoms, is reacted with at least one amine of formula (II) HNR1R2 ??(II) wherein R1 and R2 are independently hydrogen or a hydrocarbon radical comprising between 1 and 100 C atoms, to form an ammonium salt, and said ammonium salt is then reacted to form a carboxylic acid amide, under microwave irradiation in a reaction pipe, the longitudinal axis of the pipe being oriented in the direction of propagation of the microwaves of a monomode microwave applicator.

Abstract: A method for the preparation of functionalized particles includes providing a feedstock made of particles, a surface treatment agent reactive with the particles, and solvent. The feedstock is exposed to microwave radiation to heat the feedstock and react the particles with the surface treatment agent to provide the functionalized particles in less than about 60 minutes.

Abstract: There is disclosed a method for partially derivatizing a curved surface of particles in an electrically conducting solvent, said method comprises the steps: a) bringing particles in close contact with at least one surface by using a force, b) inducing a chemical reaction on at least one part of a particle by applying an electrical potential between said at least one surface and the electrically conducting solvent, and c) further reacting said at least one part of a particle where a chemical reaction has been induced in step b) above. There is further disclosed a partially derivatized particle as well as uses of the particle. Advantages include that the method is simple and only requires a potentiostat in addition to standard laboratory equipment, is inexpensive, time-efficient, and inherently parallel.

Abstract: A dechalcogenative method for the preparation of an allylic sulfide comprises contacting an activated chalcogenide of Formula (I) with a thiol of Formula (II) for a period of time sufficient to form an intermediate of Formula (III), and supplying sufficient activation energy to the intermediate of Formula (III), in a suitable solvent, preferably in the absence of a phosphine or other thiophile, to induce a [2,3]-sigmatropic rearrangement therein to form an allylic sulfide of Formula (IV), with concomitant loss of chalcogen Z, as set forth in the following reaction scheme, wherein X is an activating group selected from the group consisting of CN, S-pyridyl, S-heteroaryl, SO2-aryl, and SO3Y; Y is an alkali metal ion; Z is Se or S; R1, R2, R3, R4, and R5 are each independently H or a hydrocarbon moiety; and R is an organic moiety.

Abstract: This invention relates to the design of a process by intermittent dielectric heating combined with a recycling system. This process consists in subjecting reagents to electromagnetic waves selected in the frequencies ranging between 300 GHz and 3 MHz intermittently using a recycling system. This process enables the treatment of oils that are hardly absorbent as well as great investment savings. This process enables operation on different scales, whether in laboratories, on a semi-industrial or industrial scale, without forfeiting the advantages of continuous dielectric heating.

Abstract: Ditopic molecules in the form of linear reaction templates have been used to construct ladder-like hydrocarbons known as [n]-ladderanes (n=3,5). The templates assemble and position reactant molecules in the solid state by way of hydrogen bonds for [2+2] photodimerization. The products, which are based on recently identified naturally occurring frameworks, form stereospecifically, in gram quantities, and in quantitative yield. The control of reactivity achieved using linear templates provides a basis for the development of molecular tools, termed assemblers, that could be used to manufacture, with atomic-level precision, a wide range of products (e.g. molecular nanostructures) with unique properties.

Abstract: In the photochemical synthetic process in semi-continuous mode according to the invention, a reactor comprising two zones is used, the radiating portion of the lamp(s) being totally immersed in a first zone which is completely filled with reaction medium and spills off via an overflow into a second zone whose volume is sufficient to contain the volume of reaction medium originating from the first zone and corresponding substantially to the volume of the reagent(s) gradually introduced.

Abstract: The invention relates to a semi-permeable membrane separation process and device in which the said membranes comprise sulphonated polyimides. The present invention also relates to the use of sulphonated polyimide membranes in separation processes and devices using semi-permeable membranes.

Abstract: The present invention is draw to microwave heating of a transition metal-catalysed organic reaction, in which a catalyst complex between a transition metal and an auxiliary ligand or ligands, the ligand being asymmetric or symmetric, monodentate or bidentate, results in highly chemoselective, regioselective, and stereoselective allylic substitution reactions. Molybdenum or palladium complexes form suitable catalytic systems with a plethora of ligands in a variety of solvents for such microwave facilitated nucleophilic substitution reactions.

Abstract: A process for preparing methanesulfonic acid by irradiating a mixture comprising acetic acid, sulfur dioxide and oxygen with light, wherein the reaction mixture is irradiated with an average cumulative irradiance in the range from 240 to 320 mm of from 0.05 to 50 mmol quanta/cm2h at the light entry area.