Patent application number | Description | Published |
20100126864 | PROCESS TO PREPARE AMINO ACID-N, N-DIACETIC ACID COMPOUNDS - The invention relates to a process for the production of an amino acid having at least one secondary or tertiary amino group and three or more carboxyl groups or its salt with less than an equivalent of alkaline metal based on the number of carboxyl groups, said process comprising reducing alkali metal ions from an aqueous solution of an alkali metal salt of an amino acid having at least one secondary or tertiary amino group and three or more carboxyl groups and acidifying the amino carboxylate starting material by first performing a chemical acidification step using an organic or inorganic acid to get a compound in which at least one of the groups is protonated, and in a subsequent step further acidifying the amino carboxylate starting material and reducing alkali metal ions from an aqueous solution of the partially acidified alkali metal salt of the amino acid having at least one secondary or tertiary amino group and three or more carboxyl groups by electrodialysis, wherein the electrodialysis is performed using a hydrogen ion permselective membrane on the anode side and a cation-permeable membrane on the cathode side. | 05-27-2010 |
20100222610 | GLUTAMIC ACID N,N-DIACETIC AMIDE, GLUTAMIC ACID N-ACETIC AMIDE N-ACETONITRILE, ALKALI METAL SALTS THEREOF, PROCESS TO PREPARE THEM AND THEIR USE - The present invention relates to glutamic acid N,N-diacetic amide, potassium or sodium glutamate N,N-diacetic amide, glutamic acid N-acetic amide N-acetonithle, potassium or sodium glutamate N-acetic amide N-acetonitrile, to processes to prepare such compounds and the use thereof. | 09-02-2010 |
20100311998 | CHELATING AGENT BASED IONIC LIQUIDS, A PROCESS TO PREPARE THEM, AND THEIR USE - The present invention relates to ionic liquids of the formula: (M | 12-09-2010 |
20100324334 | ALKALI METAL SALT OF GLUTAMIC ACID N,N-DIACETIC ACID, A PROCESS TO PREPARE SUCH SALT, AND THE USE THEREOF - The present invention relates to an alkalimetal salt of glutamic acid-N,N-diacetic acid (GLDA) of the formula Na | 12-23-2010 |
20120004147 | COATED PARTICLES OF A CHELATING AGENT - The present invention relates to a coated particle including a particle including at least one chelating agent of the formula COOH—CHX—N—(CH | 01-05-2012 |
20120142964 | PROCESS TO PREPARE A CHELATING AGENT OR PRECURSOR THEREOF USING A CYANIDE SALT - The present invention relates to a process comprising the reaction of a cyanide with an amino acid and an aldehyde, characterized in that the cyanide is a cyanide salt, the amino acid is aspartic acid and/or glutamic acid in the acidic form, and the process is performed under acidic pH by the addition of between 0 and 1 equivalent of an acid based on the amount of aspartic or glutamic acid. | 06-07-2012 |
20130209806 | Coated Particles of a Glumatic Acid N,N-Diacetate Chelating Agent - The present invention relates to a coated particle containing a particle and a coating, wherein the particle contains glutamic acid N,N-diacetic acid or a partial salt thereof of the formula HnYm-GLDA, wherein Y is a cation, selected from the group of sodium, potassium and mixtures thereof, n+m=4, and wherein the coating contains at least one salt that contains as a cation at least one of sodium, potassium or lithium and as anion at least one of silicate sulfate, carbonate, chloride, nitrate, percarbonate, glycolate, oxalate, citrate, stearate, lactate, succinate, malonate, maleate, diglycolate, and fumarate, to a process to prepare such a particle, and, to the use thereof. | 08-15-2013 |
20150321995 | Crystalline particles of glutamic acid N,N-diacetic acid - The invention relates to glutamic acid N,N-diacetic acid (GLDA) of the formula GLDA-Y | 11-12-2015 |