74 results about "Onium compound" patented technology

A method and a composition used therein are disclosed for inhibiting formation of hydrocarbon hydrates. The composition comprises an onium compound, an amine salt and, optionally, a solvent. The method and composition are particularly useful for oil and gas production

The present invention concerns an improved optical method and optical sensing device for determining the levels of polyhydroxyl-substituted organic molecules in vitro and / or in vivo in aqueous media. The range of detection is between about 400 and 800 nm. In particular, a sensory devise is implemented in a mammal to determine sugar levels. Specifically, a dye is combined with a conjugated nitrogen-containing heterocyclic aromatic boronic acid-substituted bis-onium compound in the presence of a sugar, such as fructose or glucose. The viologens are preferred as the aromatic conjugated nitrogen-containing boronic acid substituted compounds. The method is useful to determine sugar levels in a human being.

A method for inhibiting formation of hydrocarbon hydrates in mixtures of water and a hydrate-forming guest molecule involves adding an ion pair to the mixtures in an amount effective to inhibit formation of the hydrocarbon hydrates under conditions otherwise effective to form the hydrocarbon hydrates in the absence of the ion pair. In one non-limiting embodiment of the invention the ion pair includes a cationic component that may be a quaternary ammonium compound or an onium compound and a non-cationic counter-ion component that could be an anionic compound, a non-ionic compound and / or an amphoteric compound. Two specific, suitable non-cationic counter-ion components include sodium dodecyl sulfate and ammonium alkyl ether sulfate.

A chemiluminescent substrate of a hydrolytic enzyme having the following general Formula I is disclosed, as follows:Lumi-M-PFormula Iwhere “Lumi” is a chemiluminescent moiety capable of producing light (a) by itself, (b) with MP attached and (c) with M attached. Examples of Lumi include chemiluminescent acridinium compounds, benzacridinium compounds, quinolinium compounds, isoquinolinium compounds, phenanthridinium compounds, and lucigenin compounds, spiroacridan compounds, luminol compounds and isoluminol compounds. M is a multivalent heteroatom having at least one lone pair of electrons selected from oxygen, nitrogen and sulfur, directly attached to the light emitting moiety of Lumi at one end and to P at the other end. P is a group that can be readily removed by hydrolytic enzymes. An enzymatic reaction utilizing the above compound is the following:where HE is a hydrolytic enzyme. Lumi-M is a chemiluminescent product having physical and / or chemical properties different from those of Lumi-M-P.

The invention relates to semiconductor device fabrication and more specifically to a method and material for forming of shallow trench isolation structures in integrated circuits. A silica dielectric film is formed by preparing a composition comprising a silicon containing pre-polymer, optionally water, and optionally a metal-ion-free catalyst selected from the group consisting of onium compounds and nucleophiles. The substrate is then coated with the composition to form a film. The film is then crosslinked to produce a gelled film. The gelled film is then heated at a temperature of from about 750° C. to about 1000° C. for a duration effective to remove substantially all organic moieties and to produce a substantially crack-free silica dielectric film.

PCT No. PCT / JP98 / 02637 Sec. 371 Date Feb. 18, 1999 Sec. 102(e) Date Feb. 18, 1999 PCT Filed Jun. 16, 1998 PCT Pub. No. WO98 / 58018 PCT Pub. Date Dec. 23, 1998A composition which contains ETFE and PAS in a weight ratio of 5-95 / 5-95, and which further contains an organic onium compound in such a proportion that the weight ratio of the total amount of the above two component polymers and the organic onium compound is 80-99.99 / 0.01-20.

The invention discloses an SSZ-39 / ZSM-5 composite molecular sieve and a synthesis method and application thereof. The synthesis method comprises the steps of providing an aluminum source through FAU-type aluminosilicate zeolite, taking an alkyl-substituted piperidine onium compound as a template agent, adding alkali-treated HZSM-5 to participate in crystallization synthesis, carrying out crystallization to obtain SSZ-39 / ZSM-5 composite molecular sieve powder and detecting a diffraction peak through characterized XRD, wherein the molar ratio of SiO2 to Al2O3 is 20-250. The composite molecular sieve is subjected to cation exchange to obtain different ion exchange-type molecular sieves as the catalyst. The composite molecular sieve of the invention has the advantages of hierarchical holes, relatively wide acid distribution and relatively high reaction activity, and is especially suitable for solving the problems that a methanol-to-olefin catalyst is low in stability, the total low-carbon olefin selectivity is low and the yield is low.

This invention pertains generally to the field of chemical synthesis and purification, and more specifically to methods of synthesizing and purifying certain 3,7 diamino-phenothiazin-5-ium compounds (referred to herein as “diaminophenothiazinium compounds”) including Methylthioninium Chloride (MTC) (also known as Methylene Blue). In one embodiment, the method comprises the steps of, in order: nitrosylation (NOS); nitrosyl reduction (NR); thiosulfonic acid formation (TSAF); oxidative coupling (OC); Cr(VI) reduction (CR); isolation and purification of zwitterionic intermediate (IAPOZI); ring closure (RC); chloride salt formation (CSF); one of: sulphide treatment (ST); dimethyldithiocarbamate treatment (DT); carbonate treatment (CT); ethylenediaminetetraacetic acid treatment (EDTAT); organic extraction (OE); and recrystallisation (RX). The present invention also pertains to the resulting (high purity) compounds, compositions comprising them (e.g., tablets, capsules), and their use in methods of inactivating pathogens, and methods of medical treatment and diagnosis, etc., for example, for tauopathies, Alzheimer's disease (AD), skin cancer, melanoma, viral diseases, bacterial diseases, or protozoal diseases. Wherein: each of R1 and R9 is independently selected from: —H; C1-4 alkenyl; and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: C1-4 alkyl; C2-4alkenyl; and halogenated C4-1 alkyl; each of R7NA and R7NB is independently selected from: C1-4 alkyl; C2-4alkenyl; and halogenated C1-4 alkyl; and X is one or more anionic counter ions to achieve electrical neutrality.

Disclosed are antimicrobial coating compositions. These coating compositions comprise (a) a film-forming resin; (b) a porous solid comprising pores having anti-microbial metal ions disposed therein; and (c) an onium compound.

The invention relates to polymers derived from macrocyclic oligomers containing organo clay fillers comprising a) a polymer derived from a macrocyclic oligomer; b) clay platelets; and c) the residue of one or more onium compounds having at least one ligand with a C5 or greater carbon chain and at least one ligand containing one or more functional groups having one or more active hydrogen atoms wherein the functional group is reactive with the macrocyclic oligomer and / or functional groups formed when the macrocyclic oligomer decyclizes wherein a portion of one or more of the onium compounds is ironically bound to the clay platelet and covalently bonded to the polymers derived from macrocyclic oligomers. The invention also relates to processes for preparing such compositions. Furthermore, the invention relates to articles prepared from organoclay filled polymer compositions.

Disclosed is a carbonylation process for the production of carboxylic acids, carboxylic acid esters and / or carboxylic acid anhydrides wherein a carbonylation feedstock compound selected from one or more organic oxygenates such as alcohols, ethers, and esters is contacted with carbon monoxide in the presence of a carbonylation catalyst and one or more onium compounds. The carbonylation process differs from known carbonylation processes in that a halide compound such as a hydrogen halide, typically hydrogen iodide, and / or alkyl halide, typically methyl iodide, extraneous or exogenous to the carbonylation process is not fed or supplied separately to the process.

Disclosed is an improved carbonylation process for the production of carboxylic acids, carboxylic acid esters, and / or carboxylic acid anhydrides wherein a carbonylation feedstock compound selected from one or more organic oxygenates such as alcohols, ethers, and esters is contacted with carbon monoxide in the presence of a carbonylation catalyst and one or more onium compounds. The carbonylation process differs from known carbonylation processes in that a halide compound, other than the onium salt, such as a hydrogen halide (typically, hydrogen iodide) and / or an alkyl halide (typically, methyl iodide), extraneous or exogenous to the carbonylation process is not fed or supplied to the process. The process can be improved by using a bidentate ligand comprising two functional groups selected from tertiary amines and tertiary phosphines, such as 2,2′-bipyridine and diphosphine derivatives.

A treating agent composition for increasing the hydrophobicity of an organosilicate glass dielectric film when applied to said film. It includes a component capable of alkylating or arylating silanol moieties of the organosilicate glass dielectric film via silylation, and an activating agent which may be an acid, a base, an onium compound, a dehydrating agent, and combinations thereof, and a solvent or mixture of a main solvent and a co-solvent.

Discloses herein is a catalytic process for producing organohalosilane monomers from a high-boiling residue resulting from the Direct Reaction of an organohalide with silicon. The high-boiling residue contains more conventionally cleavable compounds than conventionally uncleavable compounds. The process includes heating the residue in the presence of a catalyst comprising (1) one or more heterocyclic amines and / or one or more heterocyclic ammonium halides, and (2) one or more quaternary Group 15 onium compounds.