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JP3221021B2 |
PURPOSE: To obtain ε-caprolactam in extremely high selectively from cyclohexanonoxime in a vapor phase in the presence of a solid catalyst under the coexitence of ε-caprolactam in the reaction system. CONSTITUTION: ε-Caprolactam is ob...
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JP3221024B2 |
PURPOSE: To obtain ε-caprolactam from cyclohexanonoxime using a solid catalyst activated by contact of a catalyst precursor with an aqueous solution containing both an ammonium salt and specific basic substance(s) or ammonia water. CONS...
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JP2001514251A |
The present invention provides a process for the preparation of purified caprolactam comprising the steps of:(a) depolymerizing polyamide-containing carpet in the presence of steam to obtain crude caprolactam and steam;(b) condensing or ...
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JP2001514249A |
The invention relates to the use of essentially shaped bodies containing a catalytically active oxide as a catalyst comprising no soluble constituent, under the reaction conditions, for the production of cyclic lactams by reacting aminoc...
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JP2001514076A |
Shaped materials useful as catalyst for preparing cyclic lactams by reacting aminocarbonitriles with water in the liquid phase in a fixed bed reactor and which have no soluble constituents under the reaction conditions, comprising pyroge...
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JP2001233840A |
To provide a new method for separating a mixture containing an amide compound and an acid in order to solve problems that a large amount of a counterion or a base as a third component is required when an attempt to separate the amide com...
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JP3202096B2 |
PURPOSE: To provide a method for recovering an increased volume of caprolactam with improved quality which doesn't generate remains to be removed at all, and can be introduced in a purifying process in producing caprolactam without defic...
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JP3202364B2 |
PURPOSE: To efficiently obtain the subject compd. and useful for polar solvent, extractant, etc., in a high yield hydrogenating the specific compd. at a high temp. and under a high pressure in the presence of a catalyst, a specific amine...
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JP2001512476A |
(57) [Summary] A gaseous mixture containing ε-caprolactam and water vapor by treating a mixture containing at least two of 6-aminocaproic acid, 6-aminocaproic acid ester or 6-aminocaproamide or a compound thereof in the presence of supe...
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JP2001512454A |
This continuous process for preparing an aqueous mixture of +531 -caprolactam and 6-aminocaproic acid and/or 6-aminocaproamide by involves, as the reductive amination step, continuously contacting 5-formylvaleric acid or an alkyl 5-formy...
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JP3199946B2 |
PURPOSE: To prepare the subject compound useful as a solvent and an extracting agent in high yield by reacting maleic acid or the like with an amine, or treating the amide or imide derived from both of the above under hydrogenation condi...
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JP2001213863A |
To provide a method for producing -caprolactam from cyclohexanone oxime using an easily producible catalyst in high activity (high production rate) without forming ammonium sulfate as a by-product.The object of the invention can be achie...
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JP2001213861A |
To produce -caprolactam with an industrially advantageous simple method comprising small number of steps in high conversion of each step, high productivity and decreased energy consumption under a mild reaction condition with simple oper...
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JP2001163857A |
To provide a method for producing -caprolactam from cyclohexanone oxime, by which the -caprolactam free from by-produced ammonium sulfate can be produced in the presence of a catalyst capable of being easily prepared in a high activity (...
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JP3176937B2 |
PCT No. PCT/FR97/01426 Sec. 371 Date Apr. 23, 1999 Sec. 102(e) Date Apr. 23, 1999 PCT Filed Jul. 31, 1997 PCT Pub. No. WO98/05636 PCT Pub. Date Feb. 12, 1998A method for purifying lactams by liquid-liquid extraction and/or processing wit...
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JP2001122853A |
To provide a method for producing -caprolactam from cyclohexanone oxime, using an easily preparable catalyst in a high activity (a high production rate) without forming ammonium sulfate as a by-product. This method for producing -caprola...
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JP2001114758A |
To provide a production method for caprolactam capable of stably producing high quality caprolactam. The caprolactam is produced by carrying out a Backmann rearrangement using a cyclohexanone oxim including ≤30 ppm of 3- cyclohexene-1-...
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JP3160011B2 |
PURPOSE: To easily obtain an oxime-free amide such as caprolactam by hydrolyzing an oxime-contg. amide mixture after a Beckmann rearrangement of the corresponding oxime, separating the resultant hydrolyzate from the amide and returning i...
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JP2001072658A |
To provide a method for producing an amide compound in a high conversion rate and a high yield. This method for producing an amide compound comprises using a zeolite which is pretreated with an aqueous solution containing an acid and has...
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JP2001072657A |
To produce an amide compound in high yield by carrying out the Beckmann rearrangement reaction of an oxime compound in the presence of a solid acid catalyst in the liquid phase and in the presence of a compound having a specified permitt...
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JP2001064254A |
To provide a method for producing -caprolactone, by which the -caprolactone having excellent thermal coloration resistance is obtained, on the production of the -caprolactone by the cooxidation of cyclohexanone and an aldehyde, and to pr...
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JP2001502688A |
Process to separate epsi-caprolactam from 6-aminocaproamide and 6-aminocaproamide oligomers, wherein epsi-caprolactam, 6-aminocaproamide and 6 aminocaproamide oligomers are present in a first aqueous starting mixture, which mixture is co...
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JP2001048862A |
To simply obtain a lactam useful as a raw material for nylon fibers and resins in a high yield by making ammonia act on a cycloalkanone, oxidizing the resultant reactional liquid with an organic peroxide and/or an inorganic peroxide and ...
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JP3130836B2 |
To provide a process for amide production using an acid catalyst selected from silica-alumina that has marked catalytic activity, high selectivity substantially without deterioration and can be regenerated by heat treatment. In this proc...
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JP2001019670A |
To obtain the subject organic compound in a high conversion in a high yield by using a specific beta type zeolite as a catalyst and carrying out a rearrangement reaction.A catalyst used is a zeolite containing at least zinc oxide. Prefer...
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JP3126735B2 |
A process of using fast pyrolysis in a carrier gas to convert a plastic waste feedstream having a mixed polymeric composition in a manner such that pyrolysis of a given polymer to its high value monomeric constituent occurs prior to pyro...
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JP2001002636A |
To directly obtain a lactam without causing formation of ammonium sulfate as a by-product and without separating an oxime by carrying out the synthesis of the lactam from a cycloalkane as a starting raw material using a solvent except th...
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JP2001500123A |
Process to prepare epsilon -caprolactam, in which in a step (a) a compound with the general formula: O=CH-(CH2)4-C(O)-R in which R is -OH, -NH2 or O-R', in which R' is an organic group with 1 to 10 carbon atoms, is contacted with ammonia...
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JP2001002625A |
To provide a method for producing trichloronitrosomethane by which the compound is produced while reducing the required amount of nitrosyl chloride, and the removal of the remaining nitrosyl chloride after stopping the reaction is facili...
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JP3120631B2 |
PURPOSE: To readily obtain the subject composition with hardly any oligomer content at a high rate of reaction of a raw material compound by heating and decompressing a mixture of a lactam with a low moisture content with an alkaline (ea...
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JP2000516234A |
The present application describes amidinophenyl-pyrrolidines, -pyrrolines, and -isoxazolidines and derivatives thereof of formula (I), or pharmaceutically acceptable salt forms thereof, wherein one of D and D' may be C(=NH)NH2 and the ot...
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JP2000327656A |
To provide a reaction apparatus for producing -caprolactam capable of improving a yield. In this reaction apparatus for producing -caprolactam by subjecting cyclohexanone oxime to a Beckmann rearrangement reaction in the presence of a so...
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JP2000514812A |
A process for preparing caprolactam by cyclization of 6-aminocapronitrile in the presence of water at elevated temperature and in the presence or absence of a catalyst and a solvent, comprises a) removing from the cyclization reaction ef...
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JP2000512615A |
Process to separate epsi-caprolactam from an aqueous mixture containing epsi-caprolactam and at least 0.5 wt % oligomers, wherein the separation is performed by extraction using an organic extraction agent. The aqueous mixture may be obt...
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JP2000256309A |
To simply produce the subject lactam useful for nylon, or the like, at a high addition ratio and a high selectivity and at a low cost according to a vapor-phase Beckmann rearrangement reaction by using a crystalline zeolite subjected to ...
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JP2000511919A |
PCT No. PCT/EP98/03098 Sec. 371 Date Dec. 9, 1998 Sec. 102(e) Date Dec. 9, 1998 PCT Filed Jun. 13, 1997 PCT Pub. No. WO97/47596 PCT Pub. Date Dec. 18, 1997Crude caprolactam is purified by reaction with a complex hydride of boron or of al...
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JP2000239251A |
To provide a method for producing -caprolactam from cyclohexanone in one step with a high selectivity. This method for producing -caprolactam comprises reacting cyclohexanone with a nitrogen source and oxygen. Therein, the reaction is ca...
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JP2000229939A |
To produce -caprolactam in a high selectivity by controlling in a specific range the nitrogen content of a catalyst returned from a catalyst- regenerating process to a fluidized bed type Beckmann rearrangement reaction process and contin...
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JP2000191638A |
To provide a method capable of recovering -caprolactam efficiently while preventing the oligomerization and thermal decomposition of the - caprolactam, and recovering the -caprolactam from a residue discharged from a polymerization vesse...
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JP2000178249A |
To obtain caprolactam in good yield without causing various kinds of problems by controlling the amount of sticking chlorides to a prescribed value or below according to a simple means such as washing with water when depolymerizing a the...
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JP3053114B2 |
The present invention includes a process for the preparation of a lactam by vapor phase reaction of an aliphatic aminonitrile with water in the presence of a solid catalyst, wherein the catalyst is an alumina having a specific surface, m...
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JP3048644B2 |
Dicarboxylic acid and diamine are recovered from polyamides by hydrolysis with nitric acid, followed by separation of the dicarboxylic acid, and hydrogenation of the nitric acid, and then recovery of the diamine.
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JP2000504743A |
Process to prepare epsilon -caprolactam starting from a liquid aqueous mixture containing an alcohol and 6-aminocaproic acid by cyclization of 6-aminocaproic acid in the aqueous mixture at an elevated temperature. The alcohol is separate...
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JP2000504744A |
Process for the preparation of a mixture of epsilon -caprolactam, 6-aminocaproic acid and 6-aminocaproic amide by heating an aqueous mixture containing ammonia and oligomers of 6-aminocaproic acid and/or of 6-aminocaproic amide, the aque...
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JP2000504320A |
The present invention provides novel indane-like compounds which can be useful for treating psychosis and other conditions associated with the modulation of a muscarinic receptor. The invention provides formulations and methods for using...
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JP2000502660A |
PCT No. PCT/EP96/05521 Sec. 371 Date Jun. 16, 1998 Sec. 102(e) Date Jun. 16, 1998 PCT Filed Dec. 11, 1996 PCT Pub. No. WO97/23454 PCT Pub. Date Jul. 3, 1997Caprolactam and hexamethylenediamine are prepared simultaneously starting from ad...
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JP2000044536A |
To provide -caprolactam having extremely high Pz which is an index of the amount of impurities included in the -caprolactam, useful for raw material or the like of a polyamide resin. This -caprolactam includes less than 25 ppm of impurit...
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JP2000038377A |
To recycle nylon 6 products by adding -caprolactam to a specific reaction liquor to efficiently separate, recover and remove non-meltable matter existing in the liquor and efficiently recover -caprolactam. Nylon 6 products are recycled b...
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JPH11349562A |
To obtain -caprolactam in high yield by Beckmann rearrangement of cyclohexanoxime using [B] β-zeolite in a vapor phase within a specific temperature range. This -caprolactam is obtained by Beckmann rearrangement of cyclohexanoxime using...
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JPH11322661A |
To provide a method for producing cyclohexanone from benzene without waste by utilizing byproduct cyclohexane from CHE process (a combination of the partial hydrogenation of benzene with the hydration reaction of cyclohexene), and to pro...
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