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| Number | Title | Issue Date |
| 6984758 | Purification of 1,3-bis(aminomethyl)cyclohexane by distillation A crude liquid containing 1,3-bis(aminomethyl)cyclohexane and a high-boiling component having a boiling point higher than that of 1,3-bis(aminomethyl)cyclohexane is distilled. By controlling the distillation conditions, the high-boiling component is prevented from e... | 01/10/2006 |
| 6340772 | Process for preparing (hetero) aromatic substituted benzene derivatives Three processes are described for preparing (hetero)aromatic substituted benzene derivatives which comprise aromatization of cyclohexenone derivatives via (chloro)cyclohexadiene derivatives.... | 01/22/2002 |
| 6271418 | Process for preparing (hetero) aromatic substituted benzene derivatives Three processes are described for preparing (hetero)aromatic substituted benzene derivatives which comprise aromatization of cyclohexenone derivatives via (chloro)cyclohexadiene derivatives.... | 08/07/2001 |
| 6156933 | Supercritical hydrogenation Process for the selective hydrogenation of alphatic or aromatic substrates under supercritical or near critical conditions. Hydrogenation is effected using a heterogeneous catalyst in a continuous flow reactor containing a supercritical or near critical r... | 12/05/2000 |
| 5741928 | Process for producing bis (aminomethyl) cyclohexane Disclosed is a process for producing bis(aminomethyl)cyclohexane, which comprises hydrogenating a xylylenediamine in the presence of a catalyst and at least one solvent selected from the group consisting alkylamines and alkylenediamines.... | 04/21/1998 |
| 5514358 | Method for the synthesis of chemical compounds Methods for synthesis of chemical compounds by catalytic transfer hydrogenation comprise forming a mixture of a starting material, a hydrogen donor material and a catalyst. The catalyst is selected from a catalytic form of carbon, a polyethylene glycol ph... | 05/07/1996 |
| 5371293 | Process for producing bisaminomethylcyclohexane Bisaminomethylcyclohexane is produced in high yield by one-stage process from an aromatic dinitrile by hydrogenating the aromatic dinitrile in the presence of a ruthenium catalyst containing 1 to 10% by weight of ruthenium, in terms of metallic ruthenium,... | 12/06/1994 |
| 5322965 | Process for the preparation of a mixture of cyclohexylamine and dicyclohexylamine using a supported noble metal catalyst Optionally substituted cyclohexylamine and optionally substituted dicyclohexylamine can be obtained by catalytic hydrogenation of optionally substituted aniline, a catalyst being employed which contains ruthenium, palladium or a mixture of both metals, wh... | 06/21/1994 |
| 4513149 | Raney nickel alloy expanded mesh hydrogenation catalysts Hydrogenation processes utilizing improved Raney nickel alloy catalysts are disclosed. The catalyst comprises a monolithic mesh type structure of a nickel alloy having an integral Beta phase Raney Nix M1-x coating on its outer surfac... | 04/23/1985 |
| 4503251 | Raney nickel catalysis of aromatic amines Hydrogenation processes utilizing improved Raney nickel alloy catalysts are disclosed. The catalyst comprises a monolithic mesh type structure of a nickel alloy having an integral Beta phase Raney Nix M1-x coating on its outer surfac... | 03/05/1985 |
| 4222961 | Process for hydrogenating aromatic dinitriles A process for the hydrogenation of aromatic dinitriles to the corresponding cycloaliphatic aminomethyl compounds by (1) hydrogenating the nitrile in an ether solvent containing water and ammonia using nickel or cobalt as catalyst, (2) removing by-products from... | 09/16/1980 |
| 4131744 | 4,5-Disubstituted-1-aminoalkyl cyclohexenes Compounds of the formula ##STR1## wherein R is hydrogen, ##STR2## R1 and R2 are independently selected from hydrogen, lower alkyl, and cycloalkyl or R1 and R2 taken together with the nitrogen atom... | 12/26/1978 |
| 4113726 | Perhydrofluorenetetrol and perhydrophenanthrenetetrol derivatives Compounds are provided having the structure ##STR1## wherein n is 1 or 2, n1 is 0, 1 or 2 and n2 is 0, 1, 2 or 3, R1, R2, R3 and R4 may be the same or different and can be hydrogen, lo... | 09/12/1978 |
| 4070399 | Hydrogenation of terephthalnitrile A process for the preparation of 1,4-bis-(aminomethyl)cyclohexane by hydrogenating a solvent solution of terephthalonitrile containing at least about 5% by volume of ammonia, said hydrogenation being conducted at a temperature between about 100° and abou... | 01/24/1978 |
| 4024185 | Cycloaliphatic unsymmetrical diamines Novel cycloaliphatic diamines have been prepared which are consisting of two unequivalent amine groups. The diamines are prepared by reduction of aromatic dinitro compounds. The polyamides made from these diamines are useful in forming fibers and films ha... | 05/17/1977 |
| 3998881 | Hydrogenation of phthalonitriles using rhodium catalyst A process for the preparation of 1,3 or 1,4-bis (aminomethyl)cyclohexane by hydrogenating a solvent solution of iso- or terephthalonitrile at a temperature between about 50° and about 150° C., at a pressure of between about 500 and about 1500 psig., and... | 12/21/1976 |
| 3936465 | Cyclohexane tetrols and derivatives thereof The compounds of the invention have the formula ##SPC1## Wherein Y is a radical of the formula ##SPC2## Wherein n is 1, 2, 3, 4, 5, or 6, m is 0 or 1, and R5 is hydrogen or alkyl of 1 to 3 carbons; R1, r2, r3 an... | 02/03/1976 |
