44 results about "Alkanesulfonic Acids" patented technology

A wellbore fluid having an oleaginous phase and an additive for increasing the density of the wellbore fluid. The additive comprises solid colloidal particles coated with a dispersant during the comminution process of forming the particles. Exemplary starting materials for the colloidal particles include commonly known weighting agents as well as mixture and combinations thereof. The dispersant in one embodiment, is selected from carboxylic acids of molecular weight of at least 150 Daltons. Alternatively, the dispersant coating may be made of compounds including oleic acid, polybasic fatty acids, alkylbenzene sulfonic acids, alkane sulfonic acids, linear alpha-olefin sulfonic acid or the alkaline earth metal salts of any of the above acids, and phospholipids as well as mixtures and combinations of these compounds. In another embodiment the dispersant is a polyacrylate ester having an average molecular weight from about 10,000 Daltons to about 200,000 Daltons.

The present invention relates to a process for the production of alkanesulfonic acid. More particularly, the present invention relates to a process for the production of alkanesulfonic acid from alkyl mercaptan effluents generated in chemical industries. The process of the invention comprises the oxidation of the entire alkyl mercaptan generated as an effluent in the chemical industries to serve two concomitant purposes: (1) complete removal of obnoxious odor, and (2) value addition by the production of alkanesulfonic acids selectively in quantitative yields.

Methods of increasing permeability in a carbonatic rock formation, the methods comprising: providing an alkanesulfonic acid; and introducing the alkanesulfonic acid into the carbonatic rock formation.

A compound of the formula (I)ALK—SO2—O—O—SO2OX,wherein ALK is a branched or unbranched alkyl group, especially a methyl, ethyl, propyl, butyl, isopropyl, isobutyl group, or a higher alkyl group, and X=hydrogen, zinc, Aluminium, an alkali or alkaline earth metal.

A dry-milling ethanol process includes the steps of: dry-milling corn kernels to form a corn flour; combining the corn flour with water to form a mash; fermenting the mash thereby producing beer and carbon dioxide; adding an alkanesulfonic acid to the beer in an amount sufficient to adjust the pH to a range of from about 3 to about 5; distilling the beer to produce ethanol and whole stillage; and processing the whole stillage to produce wet distiller's grains with solubles and / or dried distiller's grains with solubles.

The invention teaches an improved process for the manufacture of useful fluoran dyes of the structure according to formula 1comprising condensing in an alkanesulfonic acid or an arenesulfonic acid to acid according to formula 2with an aminodiphenylamine of formula 3wherein R, R1-R6 are as defined in the specification.