Patent application number | Description | Published |
20100186961 | ALPHA AMINO ACID PHOSPHONIC ACID COMPOUNDS, METHOD OF PREPARATION OF USE THEREOF - Novel aminoacid alkylphosphonic acid compounds are disclosed. These compounds can be used in multiple applications, in particular in a scale inhibitor functionality in aqueous systems, including in marine oil recovery. | 07-29-2010 |
20110085959 | METHOD FOR THE MANUFACTURE OF CONCENTRATED PHOSPHORUS ACID - A method for the manufacture of concentrated phosphorous acid starting from pure P | 04-14-2011 |
20110086791 | SURFACE TREATMENT COMPOSITION CONTAINING PHOSPHONIC ACID COMPOUNDS - Surface treatment compositions containing selected phosphonic acid compounds are disclosed. The compositions contain major levels of surface-active agents in combination with additive levels of the phosphonic acid compounds, and, in accordance with needs and objectives, conventional optional ingredients and additive agents. The inventive compositions can provide significant performance benefits, among others novel synergies and eminently desirable regulatory and environmental acceptability. | 04-14-2011 |
20110133116 | METHOD OF WATER TREATMENT - A method for securing the use of an aqueous medium under any substantial exclusion of metal ion interference is disclosed. A phosphonic acid compound containing: a selected phosphonate moiety and a moiety selected from a limited number of species; or hydrocarbon chains containing aminoalkylene phosphonic acid substituents; or alkylamino alkylene phosphonic acids containing an active moiety embodying N, O, and S. The technology can, by way of illustration, be used in numerous applications including secondary oil recovery, scale inhibition, industrial water treatment, paper pulp bleaching, dispersant treatment, sequestering application, brightness reversion avoidance and paper pulp treatment. | 06-09-2011 |
20130030204 | METHOD FOR THE MANUFACTURE OF AMINOPOLYALKYLENE PHOSPHONIC ACIDS - A method for the manufacture of aminopolyalkylene phosphonic acid of a specific general formula is described. In particular, a mixture of specifically defined ranges of reactants to wit: phosphorous acid; an amine; formaldehyde and an aminopolyalkylene phosphonic acid, having the same general formula as the compound to be manufactured, are reacted to thus yield a product of outstanding selectivity and purity with substantially reduced levels of non-desirable by-products. | 01-31-2013 |
20130042986 | METHOD FOR PULP BLEACHING - A process for pulp bleaching is disclosed wherein an amino acid phosphonic acid is used together with a bleaching agent, pH regulants and pH buffers for pulp treatment in an aqueous medium. The bleaching agent can be represented by oxidative and reductive bleaching agents. The oxidative bleach treatment is conducted in alkaline medium whereas the reductive treatment is conducted in mildly acid medium. | 02-21-2013 |
20130102808 | METHOD FOR THE MANUFACTURE OF PHOSPHONOALKYL IMINODIACETIC ACID - An improved method for the manufacture of phosphonoalkyl iminodiacetic acid M | 04-25-2013 |
Patent application number | Description | Published |
20110085959 | METHOD FOR THE MANUFACTURE OF CONCENTRATED PHOSPHORUS ACID - A method for the manufacture of concentrated phosphorous acid starting from pure P | 04-14-2011 |
20110118502 | METHOD FOR THE MANUFACTURE OF AMINOALKYLENE PHOSPHONIC ACID - A method for the manufacture of amino alkylene phosphonic acids is disclosed. Pure P | 05-19-2011 |
20110130312 | METHOD OF SECONDARY OIL RECOVERY - A method of secondary oil recovery is disclosed wherein from 0.1 to 100 000 ppm of a medium soluble aminoalkylene phosphonic acid amine salt are used wherein both the aminoalkylene phosphonic acid moiety and the amine moiety are selected from a specifically defined class of compounds. The substantially medium soluble aminoalkylene amine phosphonates exhibit a significantly improved compatibility with the recovery medium and thus can propagate fairly freely into the medium and consequently cover a largely extended rock surface before being subject to precipitation in the form of a medium insoluble scale inhibitor. The amine compound is represented by combinations of structurally different compounds. | 06-02-2011 |
20120136171 | METHOD FOR THE MANUFACTURE OFAMINO ALKYLENE PHOSPHONIC ACIDS - A method for the manufacture of aminoalkylene phosphonic acids broadly is disclosed. In the essence, an amine corresponding to a specific formula is reacted in aqueous medium with phosphorous acid and formaldehyde to thereby yield a medium insoluble reaction product. The insoluble product formed i.e. the aminoalkylene phosphonic acid can be separated, optionally washed, and recovered. This process yields high purity and selectivity reaction products. The excess phosphonic acid can be recycled into the processing sequence. | 05-31-2012 |
20120190877 | METHOD FOR THE MANUFACTURE OF DIALKYLPHOSPHITES - A method for the manufacture of dialkyl phosphites is disclosed wherein a P—O component containing from 1 to 6 P—O—P bonds in the molecule is reacted with an alcohol and a carboxylic acid ester having from 1 to 6 carbon atoms in the alkyl group and from 5 to 20 carbon atoms in the esterifying alkyl group of the ester. The dialkyl phosphites are formed under simultaneous removal by distillation of the carboxylic acid formed. | 07-26-2012 |
20120245354 | METHOD FOR THE MANUFACTURE OF AMINOHYDROXY DIPHOSPHONIC ACIDS - The technology of this invention concerns a method for the manufacture of hydroxy diphosphonic acids containing an amino moiety. The method specifically involves reacting a liquid P | 09-27-2012 |
20130030204 | METHOD FOR THE MANUFACTURE OF AMINOPOLYALKYLENE PHOSPHONIC ACIDS - A method for the manufacture of aminopolyalkylene phosphonic acid of a specific general formula is described. In particular, a mixture of specifically defined ranges of reactants to wit: phosphorous acid; an amine; formaldehyde and an aminopolyalkylene phosphonic acid, having the same general formula as the compound to be manufactured, are reacted to thus yield a product of outstanding selectivity and purity with substantially reduced levels of non-desirable by-products. | 01-31-2013 |
20130042986 | METHOD FOR PULP BLEACHING - A process for pulp bleaching is disclosed wherein an amino acid phosphonic acid is used together with a bleaching agent, pH regulants and pH buffers for pulp treatment in an aqueous medium. The bleaching agent can be represented by oxidative and reductive bleaching agents. The oxidative bleach treatment is conducted in alkaline medium whereas the reductive treatment is conducted in mildly acid medium. | 02-21-2013 |
20130102808 | METHOD FOR THE MANUFACTURE OF PHOSPHONOALKYL IMINODIACETIC ACID - An improved method for the manufacture of phosphonoalkyl iminodiacetic acid M | 04-25-2013 |