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| Number | Title | Issue Date |
| 7256313 | Method for the production of isophorondiamine (ipda, 3-aminomethyl-3,5,5-trimethyl- cyclohexylamine) having a high cis/tran-isomer ratio The invention relates to processes for preparing 3-aminomethyl-3,5,5-trimethylcyclo-hexylamine (isophoronediamine, IPDA) having a high cis/trans isomer ratio. IPDA having a cis/trans isomer ratio in the range from 63/37 to 66/34 can be obtained in any desired cis/tr... | 08/14/2007 |
| 6774270 | Method of removing hexafluoropropylene dimers A method of removing hexafluoropropylene dimers (“HFP dimers”), dimer hydrides and other oligomers from a fluid is described. The method comprises heating the fluid to isomerize the HFP dimers to the thermodynamic isomer, and contacting the fluid with a tertiary... | 08/10/2004 |
| 6756500 | α,ω-Diene metathesis in the presence of ionic liquids A process for preparing a cyclic compound comprising subjecting a starting material in the presence of a catalyst component to metathesis reaction in the presence of an ionic liquid, wherein the starting material is a α,ω-diene bearing a α substituent NRR1 | 06/29/2004 |
| 6350910 | Stereospecific isomerisation of allylamines with the aid of immobilized phosphorated chiral ligands The present invention describes a method for stereospecific isomerisation of prochiral allylamines into enamines and chiral imines, by using catalysts of Rh, Ir and Ru having phosphine chiral ligands immobilised on a solid material. The immobilised ligand... | 02/26/2002 |
| 6140540 | Hydrogenation of aromatic amines to produce their ring hydrogenated counterparts This invention relates to an improved hydrogenation and isomerization process wherein aromatic amines are hydrogenated to their ring hydrogenated counterparts and substantially isomerized to their thermodynamic form. These aromatic amines are presented by... | 10/31/2000 |
| 6121493 | Isomerization of cyclohexylamines to produce their thermodynamic isomeric form This invention relates to an isomerization process wherein hydrogenated aromatic amines are substantially isomerized to their thermodynamic form. These hydrogenated aromatic amines are presented by the formulas: ##STR1## wherein R is hydrogen or C | 09/19/2000 |
| 6020527 | Stereospecific isomerisation of allyl amines using chiral phosphorous ligands The present invention describes a stereospecific process for the isomerization of prochiral allyl amines into chiral enamines and imines, using Rh, Ir or Ru catalysts which carry chiral phosphine ligands derived from ferrocenes, which may be immobilized o... | 02/01/2000 |
| 5969187 | Process for producing trans 1,4-bis(aminomethyl)cyclohexane Provided a process for producing higher content of trans 1,4-bis(aminomethyl)cyclohexane which is used as the raw material for producing polyamides or polyurethanes having physically and chemically excellent properties from 1,4-bis(aminomethyl)cyclohexane... | 10/19/1999 |
| 5814664 | 3-alkylamino-2-hydroxy-4-hydroxymethyl-2-cyclopenten-1-one advanced glycosylation endproducts and methods of use therefor The present invention relates to advanced glycosylation endproducts, and particularly to the use of novel cyclopentenone aminoreductones, 3-alkylamino-2 -hydroxy-4-hydroxymethyl-2-cyclopenten-1-ones. Such AGEs can be used in various diagnostic and therape... | 09/29/1998 |
| 5744644 | Concentrated solutions of polyhydroxyalkylamines and their use It has been found that certain polyhydroxyalkylamines have a particularly good solubility in water, alcohols and in mixtures of water and alcohols. The concentrated solutions described consist essentially of water, alcohols, preferably C1 -C | 04/28/1998 |
| 5516943 | Process for preparing cyclic CIS-1-amino-2-alkanols A two-step process for the conversion of a trans-1-amino-2-hydroxycycloalkane stereoselectively to a cis-1-amino-2-hydroxycycloalkane is disclosed. The novel step, a one-step hydrolysis with formal inversion, can be used to convert an amide of a tran... | 05/14/1996 |
| 5319069 | Polyether compounds and electrophotographic photoconductor comprising one polyether compound An electrophotographic photoconductor comprising an electroconductive support and a photoconductive layer formed thereon comprising as an effective component at least one polyether compound represented by formula (I): ##STR1## wherein Ar represe... | 06/07/1994 |
| 4861890 | Isomerization A process for producing chiral enamines by isomerizing a beta, gamma unsaturated amine with a rhodium-diphosphine complex with the addition of an achiral triarylphosphine and, if desired, hydrolyzing the compound of the enamine I obtained to the correspon... | 08/29/1989 |
| 4843107 | Process for the preparation of polyamines and their use for the preparation of polyurethanes Polyamines containing primary amino groups are made by a one-shot process for the hydrolysis of prepolymers containing isocyanate end groups and having an isocyanate content of from 0.5 to 40 weight % with 0.75 to 40 mol of water per equivalent of isocyan... | 06/27/1989 |
| 4843108 | Process for the production of polyamines Polyamines are produced by hydrolyzing isocyanate compounds having an NCO content of from 0.5 to 40 wt. % with from 0.75 to 40 moles of water per equivalent of NCO groups in the presence of from 0.021 to 0.099 wt. % sodium hydroxide and at least 10 wt. % ... | 06/27/1989 |
| 4665000 | Photoresponsive devices containing aromatic ether hole transport layers Disclosed for incorporation in imaging members are novel aromatic ether compositions of the formula R--X--R1, wherein R and R1 are independently selected from arylamino and substituted arylamino groups, and X is selected from the gro... | 05/12/1987 |
| 4304934 | Synthesis of amino hydroxy cyclopentenones This invention relates to a method of synthesizing 3-amino-2-hydroxy-2-cyclopentenones possessing an aliphatic substituent in the 4-position which comprises reacting cyanoacetamide with an aliphatic aldehyde to yield the corresponding ଲ-substit... | 12/08/1981 |
| 4244890 | Cyclic terpenoid amines, their preparation and uses Disclosed are novel cyclic terpenoid amines which can be prepared by cyclizing the corresponding acyclic terpenoid amine. CROSS REFERENCE TO RELATED APPLICATIONS This application is related to applicant's commonly owned copending application Ser. No. 916,966 f... | 01/13/1981 |
| 4086276 | Isomerization of cyclohexanebis(methylamine) stereoisomers A process for isomerizing cyclohexanebis(methylamine) by contacting it with an organometallic compound at a temperature of from about 100° to about 200° C.... | 04/25/1978 |
| 4026943 | Novel process The trans-trans-isomer content of a mixture of stereoisomers of di-(p-aminocyclohexyl)methane is enriched by treating the latter mixture, optionally in solution in an organic solvent, with the trans,trans-isomer of a bisbenzaldimine of di-(p-aminocyclohex... | 05/31/1977 |
| 4020104 | Process for isomerizing cis,cis- and cis,trans-isomers of di-(p-aminocyclohexyl)methane to the corresponding trans,trans-isomer A process is described for isomerizing the cis,cis- and cis,trans-isomers of di-(p-aminocyclohexyl)methane to the corresponding trans,trans-isomer. The starting isomer, or mixture of isomers, is converted to the corresponding bis-benzaldimine by reaction ... | 04/26/1977 |
