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JP3726816B2 |
To provide a regenerated catalyst with high activity prepared from a used catalyst in subjecting a cyclohexanone oxime to a Beckmann rearrangement reaction in a gas phase. A solid catalyst used in subjecting the cyclohexanone oxime to th...
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JP2005533505A |
Antisense compounds, compositions and methods are provided for modulating the expression of Endothelial Lipase (EL). The compositions comprise antisense compounds, particularly antisense oligonucleotides, targeted to nucleic acids encodi...
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JP3708549B2 |
The invention concerns the simultaneous preparation of caprolactam and hexamethylene diamine from adipodinitrile, by the following steps: (a) the adipodinitrile is partially hydrogenated, producing a mixture substantially containing 6-am...
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JP2005272386A |
To provide a method for producing high purity caprolactum at a low cost and with good efficiency which prevents formation of an emulsion to inhibit the lowering of extraction efficiency in extracting crude caprolactam containing insolubl...
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JP2005225821A |
To provide a method for producing a cyclic amide compound in high yield and facilitating the separation and the recovery of a catalyst without requiring complicated operation such as a previous dehydrating and drying treatment of a solve...
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JP3677958B2 |
To improve conversion ratio of cyclohexanone oxime and selectivity of ε-caprolactam by constituting the titled catalyst of a pentasil type zeolite whose crystal is an intergrowth with a no. of projections. As a zeolite to be used, it is...
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JP3643035B2 |
The present invention relates to a process for separating the water from an aqueous lactam solution.It applies more particularly to a mixture resulting from the reaction between an aminonitrile and water (this reaction also being called ...
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JP2005510562A |
The invention relates to a process for recovering caprolactam from a mixture comprising caprolactam, water, light and heavy components, by subjecting the mixture to a first vacuum distillation resulting in a first bottom product comprisi...
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JP2005508828A |
The invention relates to a method for producing cyclic lactams of the formula (II), wherein n and m may each represent 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 and the sum of n + m is at least 3, preferably at least 4, R<1> and R<2> represent C1-...
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JP2005508390A |
Bidentate ligand of formula (I), R1R2M1-R-M2R3R4 wherein M1 and M2 each indenpendently represent P, As or Sb; R1, R2, R3 and R4 each independently represent the same or a different optionally substituted organic group and at least one of...
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JP2005507950A |
Process for the telomerization of a conjugated diene, wherein the conjugated diene is reacted with a compound containing an active hydrogen atom and having a formula R'-H in the presence of a telomerization catalyst based on: (a) a sourc...
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JP2005505561A |
A process for continuously preparing 2-pyrrolidone by reacting gamma-butyrolactone with ammonia in the liquid phase in the presence of water, wherein the reaction is carried out at a temperature of from 275 to 300° C. and an absolute pr...
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JP2005041868A |
To provide a method for producing -caprolactam in a high conversion rate and high selectivity by using a reaction apparatus (1) installed with a multiporous gas dispersion plate (2) having large numbers of pores (21) and a catalyst layer...
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JP2004352623A |
To provide a method for producing a lactam compound, comprising the Beckmann rearrangement reaction of a cycloalkanone oxime compound in the presence of a solid acid catalyst in a liquid phase, by which the lactam compound can be produce...
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JP2004345994A |
To improve purification yield of NVP (N-vinyl-2-pyrrolidone) in a method for purifying NVP by crystallization.The method for purifying N-vinyl-2-pyrrolidone by crystallization comprises carrying out crystallization by making a stabilizer...
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JP3584324B2 |
The use of methanesulfonic acid in place of sulfuric acid in the Beckmann reaction obviates side reactions and results in an improved yield of lactam. 6 - 12C lactams can be prepared from the corresponding cycloalkanone oximes by Beckman...
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JP3585842B2 |
The present invention relates to a process for regenerating a catalyst for the cyclizing hydrolysis of an aminonitrile for the manufacture of lactams. It relates more particularly to the regeneration of the solid catalysts used in the pr...
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JP3579428B2 |
PCT No. PCT/FR97/01903 Sec. 371 Date Jul. 27, 1999 Sec. 102(e) Date Jul. 27, 1999 PCT Filed Oct. 23, 1997 PCT Pub. No. WO98/17641 PCT Pub. Date Apr. 30, 1998The present invention relates to the treatment of lactams obtained directly from...
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JP3571723B2 |
The present invention relates to a method of reacting polyamides or mixtures thereof with ammonia to obtain a mixture of monomers. The reaction is carried out in the presence of certain Lewis Acid catalyst precursors.
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JP3565868B2 |
The present invention relates to a process for the preparation of enantiomerically enriched N-derivatized (1R,4S)-2-azabicyclo[2.2.1]hept-5-en-3-ones by use of an enzyme.
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JP2004513933A |
A process for making 6-aminocaproic acid by hydroformylating 3-pentenenitrile to produce 3-, 4-, and 5-formylvaleronitrile (FVN mixture), oxidizing the FVN mixture to produce 3-, 4-, and 5-cyanovaleric acid; hydrogenating the resulting p...
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JP3523332B2 |
PURPOSE: To provide a process for purifying ε-caprolactam more safely at good efficiency. CONSTITUTION: There is provided a process for purifying ε-caprolactam, which involves the hydrogenation of a water/ε-caprolactam mixture with hy...
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JP2004083554A |
To provide a production process of a lactum compound by which the compound is produced in a high yield under a mild reaction condition using an economically favorable solid catalyst in conducting Beckmann rearrangement reaction of a cycl...
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JP2004504372A |
A process is provided for the separation of ammonia (I) from mixtures (II) containing ammonia (I) and an amide (IV) selected from the group consisting of a lactam (IVa), an oligomer (IVb) and a polymer (IVc) with amide groups in the main...
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JP2004503530A |
A process is provided for the preparation of caprolactam from a compound of formula (I):in which R is a carboxamide, carboxylic acid or carboxylic acid ester group,whereina) a compound (I) or a mixture of such compounds, in the presence ...
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JP3481647B2 |
PURPOSE: To enhance selectivity of a caprolactam product by bringing a specific zeolite into contact with dicarboxylic acid. CONSTITUTION: The zeolite having 0.1-50 α values and ≥1 constraint index is brought into contact with a 0.01-...
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JP2003535846A |
A process for distillative removal of ammonia from solutions (I) which include a lactam and ammonia comprises effecting said removal in a distillation apparatus (a) at an absolute pressure of less than 10 bar.
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JP2003321443A |
To provide a method for the continuous production of ω-lauryl lactam under high temperature and pressure water condition in high efficiency.The ω-lauryl lactam can be synthesized in high efficiency by introducing cyclododecanone oxime ...
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JP2003320259A |
To provide an amide compound with improved productivity by regenerating a used catalyst in producing an amide compound under a Beckman transformation reaction with an oxime compound.The method for regenerating a sulfonic acid comprises t...
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JP3464219B2 |
PCT No. PCT/EP93/00239 Sec. 371 Date Aug. 8, 1994 Sec. 102(e) Date Aug. 8, 1994 PCT Filed Feb. 3, 1993 PCT Pub. No. WO93/16042 PCT Pub. Date Aug. 19, 1993.The invention relates to a process for producing pyrrolidone and N-alkyl pyrrolido...
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JP2003531893A |
A process for the preparation of caprolactam is provided, whereina) a mixture (I) containing 6-aminocapronitrile and water is reacted in the gas phase, in the presence of a catalyst, to give a mixture (II) containing caprolactam, ammonia...
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JP2003531891A |
The invention relates to a method for producing cyclic lactams of formula (II) by reacting a compound (I) of formula (I) with water in the presence of an organic, liquid dilution agent in the liquid phase. In formula (II), n and m respec...
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JP2003531892A |
A process for the preparation of caprolactam is provided, whereina) a mixture (I) containing 6-aminocapronitrile and water is reacted in the liquid phase, in the presence of a catalyst, to give a mixture (II) containing caprolactam, ammo...
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JP3456233B2 |
PURPOSE: To produce high-quality ε-caprolactam by carrying out the extraction treatment of a lactam which is obtained by the vapor-phase rearrangement of an oxime and contains impurities, and then treating the resultant lactam with acti...
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JP2003530380A |
A process for the production of 6-aminocaproamide comprising reacting 5-cyanovaleramide with hydrogen in the presence of a metal catalyst. The 6-aminocaproamide is useful, for example, in the production of caprolactam and nylon 6.
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JP2003528849A |
Processes to prepare 5-cyanovaleric acid or its ester are provided, by carbonylation of a pentenenitrile, wherein pentenenitrile is reacted with carbon monoxide and water and/or an alcohol in the presence of a catalyst system. The cataly...
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JP2003238520A |
To provide a method for producing a sulfonic acid from a sulfonate salt through simple operations with good productivity, when an amide is formed by subjecting an oxime into a rearrangement reaction in the presence of the sulfonic anhydr...
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JP2003206276A |
To provide a simple method for producing α-amino--caprolactam.This method comprises cyclodehydration of lysine or polylysine in the presence of high-temperature and high-pressure water.
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JP2003521532A |
The present invention discloses 3-pyridyl-1-hydroxyethylidene-1,1-bisphosphonic acid sodium hemipentahydrate and monohydrate, methods of preparing the hemipentahydrate or monohydrate through control of the nucleation temperature and rate...
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JP2003521533A |
A process for the preparation of epsilon -caprolactam starting from 6-aminocaproic acid, 6-aminocaproamide, 6-aminocaproic ester, 6-aminocapronitrile, oligomers or polymers of these compounds or mixtures comprising at least two of these ...
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JP2003181277A |
To provide a method of manufacturing a high temperature high pressure fluid, a high temperature high pressure reaction method and a reaction system thereof capable of reaching prescribed condition in the period of a short time.The method...
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JP2003519213A |
A process is described for purifying lactams, in particular the lactams obtained by cyclizing hydrolysis of an aminoalkylnitrile, and more particularly to the purification by crystallization of epsilon-caprolactam obtained by cyclizing h...
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JP2003128647A |
To obtain a target amide compound in a high yield by controlling the concentration of a by-product ketone compound in a reaction phase in carrying out rearrangement reaction through separating and circulating an N,N-bisubstituted amide c...
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JP2003128648A |
To provide a method for efficiently converting into amide compound, an inert catalytic species composed of a dehydrated dimer of the amide compound and sulfonic acid in a reaction mixture after a catalytic liquid-phase Beckmann rearrange...
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JP2003128655A |
To provide a method in which -caprolactam is produced from cyclohexene with high conversion and high selectivity and is further produced while reducing total production cost.The method is characterized by comprising a series of sequentia...
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JP2003128649A |
To provide a method for producing an amide compound in a high yield with a high productivity through a Beckmann rearrangement of an oxime compound in a liquid phase under mild reaction conditions.The method is used for producing the targ...
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JP2003104968A |
To provide a method for safely and economically producing an amide compound by subjecting an oxime compound to a Beckmann's rearrangement in liquid phase.This method for producing the amide compound by subjecting the oxime compound to th...
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JP2003104969A |
To provide a method for producing a high-purity amide compound from an oxime compound.This method for producing the amide compound by subjecting the oxime compound to a liquid phase Beckmann's rearrangement comprises a step for subjectin...
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JP2003507294A |
The invention relates to a process for treating a mixture, in particular a neutralized Beckmann rearrangement mixture, comprising i) an ammonium sulfate solution phase containing first organic impurities and ii) an aqueous lactam phase c...
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JP2002371064A |
To provide a method for purifying N-vinyl--caprolactam for producing an N-vinyl--caprolactam hardly manifesting any sensibility for color changes, i.e., having high color stability higher than that of usual N-vinyl--caprolactam obtained ...
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