Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 6441231 | Optically active quarternary ammonium salt with axial chirality, method for producing thereof, and application thereof for asymmetric synthesis of -amino acid A novel optically active quarternary ammonium salt with an axial chirality is provided. The quarternary ammonium salt can act as a phase-transfer catalyst to convert glycine derivatives into optically active -amino acid derivatives by stereoselecti... | 08/27/2002 |
| 6184414 | Process for producing ammonium-2-hydroxy-4-(methylthio)-butyrate, mixtures containing the same in liquid form and their use Process for producing ammonium-2-hydroxy-4-(methylthio)-butyrate, mixtures containing the same in liquid form and their use. In order to produce ammonium-2-hydroxy-4-methylthio-n-butyrate and mixtures containing the same with a remarkable fluidity and a v... | 02/06/2001 |
| 6124501 | Process for preparing lactamide A process for preparing lactamide with a high conversion and a high selectivity without the deterioration of a catalytic activity in a short time, which comprises subjecting lactonitrile to a hydrating reaction in the presence of (A) a catalyst including ... | 09/26/2000 |
| 5756842 | Process for preparing lactamide There is herein disclosed a process for preparing a lactamide by hydrating lactonitrile in the presence of a catalyst mainly comprising a manganese oxide, and a nitrogen-containing compound such as ammonia or diethylamine. According to this process, the l... | 05/26/1998 |
| 5488158 | Production in continuous of oxamide for the catalytic oxidation of HCN A continuous process for the production of oxamide is based on the catalytic oxidation of hydrogen cyanide with oxygen or air in a strong excess in a solution of copper nitrate in water-acetic acid. The process is carried out in a vertical tubular reactor, wit... | 01/30/1996 |
| 5449808 | Method for converting amides to nitriles and nitriles to amides A process which comprises contacting and catalytically reacting under essentially anhydrous conditions in the liquid phase an amide with a nitrile according to the equation: RCONH2 +R1 CN.revreaction.RCN+R1 CONH2 whe... | 09/12/1995 |
| 5068429 | Method of purification of the oxalic acid diamide A method of removing copper from oxamide obtained through a process which involves the use of copper catalysts, by contacting it with an aqueous solution of a suitable complexing agent, which is capable of forming copper-containing water-soluble complexes... | 11/26/1991 |
| 5047587 | Process for purifying oxalic acid diamide A process is disclosed for the purification of the diamide of oxalic acid obtained by means a process wherein copper catalysts are used, by means of the washing with aqueous solutions of an ammonium salt of an organic or inorganic acid, operating at a pH ... | 09/10/1991 |
| 4246199 | Process for the preparation of N-alkyl-substituted carboxylic acid amides An improved process for the preparation of N-alkyl-substituted carboxylic acid amides by reaction of a component which forms a carbonium ion with a nitrile, the improvement residing in carrying out the process in the presence of an acid which is inert und... | 01/20/1981 |
| 4131642 | Treatment of the waste from the production of tertiary butyl amine to recover sodium sulfate and methyl or sodium formate Isobutylene, hydrogen cyanide and sulfuric acid are reacted to produce tertiary butyl formamide, which is hydrolyzed by sodium hydroxide to produce tertiary butyl amine. The tertiary butyl amine is removed by vaporization and the residue is treated with s... | 12/26/1978 |
| 4096184 | Process for preparing acid amides A process for preparing acid amides by hydration of the corresponding nitrile compounds with water in the presence of a catalyst, characterized in that the catalyst is the one prepared by treating a vanadate with a cuprous salt or with at least two of met... | 06/20/1978 |
| 3989753 | Process for the preparation of oxamide By contacting hydrogen cyanide with oxygen or air and a catalyst solution containing water, low molecular weight aliphatic carboxylic acids, copper ions and nitrate ions oxalic acid diamide is formed in high yields.... | 11/02/1976 |
| 3937732 | Oxamide by hydrolysis of cyanogen A method for collecting a solid product from a liquid phase or liquid phase-gaseous phase feed stock. A solid forming zone is provided for accommodating the liquid phase or liquid phase-gaseous phase feed stock having a density greater than that of a liqu... | 02/10/1976 |
| 3933910 | Process for the production of ketazines A process for the production of ketazine corresponding to the general formula ##EQU1## in which: R1 and R2 are independently linear or branched alkyl radicals of from 1 to 8 carbon atoms or a phenyl radical, or taken toget... | 01/20/1976 |
