| Patent application number | Description | Published |
|---|
| 20090004707 | Process for Producing Glycolic Acid from Formaldehyde And Hydrogen Cyanide - A process is provided for producing glycolic acid from formaldehyde and hydrogen cyanide. More specifically, heat-treated formaldehyde and hydrogen cyanide are reacted to produce glycolonitrile having low concentrations of impurities. The glycolonitrile is subsequently converted to an aqueous solution of ammonium glycolate using an enzyme catalyst having nitrilase activity derived from | 01-01-2009 |
| 20090004708 | Process For Producing Glycolic Acid From Formaldehyde And Hydrogen Cyanide - A process is provided for producing glycolic acid from formaldehyde and hydrogen cyanide. More specifically, heat-treated formaldehyde and hydrogen cyanide are reacted to produce glycolonitrile having low concentrations of impurities. The glycolonitrile is subsequently converted to an aqueous solution of ammonium glycolate using an enzyme catalyst having nitrilase activity derived from | 01-01-2009 |
| 20090004709 | Process For Producing Glycolic Acid From Formaldehyde and Hydrogen Cyanide - A process is provided for producing glycolic acid from formaldehyde and hydrogen cyanide. More specifically, heat-treated formaldehyde and hydrogen cyanide are reacted to produce glycolonitrile having low concentrations of impurities. The glycolonitrile is subsequently converted to an aqueous solution of ammonium glycolate using an enzyme catalyst having nitrilase activity derived from | 01-01-2009 |
| 20090004710 | Process For Producing Glycolic Acid From Formaldehyde And Hydrogen Cyanide - A process is provided for producing glycolic acid from formaldehyde and hydrogen cyanide. More specifically, heat-treated formaldehyde and hydrogen cyanide are reacted to produce glycolonitrile having low concentrations of impurities. The glycolonitrile is subsequently converted to an aqueous solution of ammonium glycolate using an enzyme catalyst having nitrilase activity derived from | 01-01-2009 |
| 20090004711 | Process For Producing Glycolic Acid From Formaldehyde And Hydrogen Cyanide - A process is provided for producing glycolic acid from formaldehyde and hydrogen cyanide. More specifically, heat-treated formaldehyde and hydrogen cyanide are reacted to produce glycolonitrile having low concentrations of impurities. The glycolonitrile is subsequently converted to an aqueous solution of ammonium glycolate using an enzyme catalyst having nitrilase activity derived from | 01-01-2009 |
| 20090011482 | Process For Producing Glycolic Acid From Formaldehyde And Hydrogen Cyanide - A process is provided for producing glycolic acid from formaldehyde and hydrogen cyanide. More specifically, heat-treated formaldehyde and hydrogen cyanide are reacted to produce glycolonitrile having low concentrations of impurities. The glycolonitrile is subsequently converted to an aqueous solution of ammonium glycolate using an enzyme catalyst having nitrilase activity derived from | 01-08-2009 |
| 20090035841 | Enzymatic Production Of Glycolic Acid - Various methods are provided for the enzymatic production of glycolic acid from glycolonitrile. These methods include: 1) use of | 02-05-2009 |
| 20100215841 | PROCESS FOR INHIBITING OXIDE FORMATION ON COPPER SURFACES - This invention provides processes for inhibiting the formation of copper oxides on substantially oxide-free copper surfaces by contacting a substantially oxide-free copper surface with a bifunctional ligand that contains both a metal-coordinating group and a tertiary amine group in an aqueous solution of pH about 2 to about 5.5. A thin layer of the bifunctional ligand formed by coordination of the dialkylaminoacetonitrile to the copper surface can be removed by heating under vacuum to re-generate a substantially oxide-free copper surface. | 08-26-2010 |
| 20110045203 | PROCESS FOR INHIBITING OXIDE FORMATION ON COPPER SURFACES - Processes are provided for inhibiting the formation of copper oxides on substantially oxide-free copper surfaces by contacting a substantially oxide-free copper surface with a pyrazoline ligand in an aqueous solution of pH 2-5. A thin layer of the ligand formed by coordination of 2-pyrazoline or 1-methyl-2-pyrazoline to the copper surface can be easily removed by exposure to a reducing plasma to regenerate a substantially oxide-free copper surface. | 02-24-2011 |
