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    3.
    发明专利
    未知

    公开(公告)号：DE69719947T2

    公开(公告)日：2003-09-04

    申请号：DE69719947

    申请日：1997-07-17

    Applicant: TORAY INDUSTRIES ,  SODA AROMATIC

    Inventor： NIWA ATSUSHI ,  IMAMURA SHINZO ,  HASEBE AKIO ,  ITO NOBUHIKO

    IPC: C07C67/08 ,  C07C69/00 ,  C07C69/38 ,  B01J39/00

    Abstract: The present invention relates to a method for efficiently producing a highly pure alkyl carboxylate. More specifically, the present invention is a method for producing an alkyl carboxylate, in which a carboxylic acid and an alcohol are esterified by reaction in the presence of an acid catalyst, comprising the steps of removing water in the reaction system in a dehydration step established halfway in the esterification reaction using a solid acid catalyst as the acid catalyst, and restarting the esterification reaction to complete the esterification reaction. The alkanedioic acid dialkyl esters produced according to the present invention can be suitably used as intermediates of drugs, agricultural chemicals, perfumes, dyes, liquid crystal materials, high molecular materials, etc.

    4.
    发明专利
    未知

    公开(公告)号：DE69719947D1

    公开(公告)日：2003-04-24

    申请号：DE69719947

    申请日：1997-07-17

    Applicant: TORAY INDUSTRIES ,  SODA AROMATIC

    Inventor： NIWA ATSUSHI ,  IMAMURA SHINZO ,  HASEBE AKIO ,  ITO NOBUHIKO

    IPC: C07C67/08 ,  C07C69/00 ,  C07C69/38 ,  B01J39/00

    Abstract: The present invention relates to a method for efficiently producing a highly pure alkyl carboxylate. More specifically, the present invention is a method for producing an alkyl carboxylate, in which a carboxylic acid and an alcohol are esterified by reaction in the presence of an acid catalyst, comprising the steps of removing water in the reaction system in a dehydration step established halfway in the esterification reaction using a solid acid catalyst as the acid catalyst, and restarting the esterification reaction to complete the esterification reaction. The alkanedioic acid dialkyl esters produced according to the present invention can be suitably used as intermediates of drugs, agricultural chemicals, perfumes, dyes, liquid crystal materials, high molecular materials, etc.

    METHOD FOR PRODUCING -AMINOCYLCLOALKANONE OXIME HYDROCHLORIDE
    5.
    发明专利
    METHOD FOR PRODUCING -AMINOCYLCLOALKANONE OXIME HYDROCHLORIDE 未知

    公开(公告)号：CA923144A

    公开(公告)日：1973-03-20

    申请号：CA101077

    申请日：1970-12-18

    Applicant: TORAY INDUSTRIES

    Inventor： HARDDA ROKURO ,  YOTSUMOTO KYOSUKE ,  IMAMURA SHINZO

    IPC: C07C251/44

    Abstract: 1279906 Alpha-aminocycloalkanone oximes TORAY INDUSTRIES Inc 29 Oct 1970 [22 Dec 1969] 51550/70 Heading C2C Alpha - aminocycloalkanone oxime hydrochlorides are prepared by reacting a bis-(2- chloro-1-nitroso-cycloalkane) of Formula I : (in which R is C 3-10 alkylene and "VVV" represents stereo-isomerism) with ammonia, the molar proportion of ammonia being at least 20 times the molar proportion of bis-(2-chloro-1-nitrosocycloalkane). The process is preferably effected at 0‹ to 150‹ C. in a solvent, e.g. a C 1-5 alkanol, a cyclic ether or water, or a mixture of two or more of these. Alpha-aminocyclopentanone and alpha-aminocyclooctanone hydrochlorides are prepared by hydrolysing the corresponding oximes. Alpha-amino-omega-laurolactam hydrochloride is prepared by Beckmann rearrangement of alpha - aminocyclododecanone oxime hydrochloride.

    POLYAMIDES AND A PROCESS FOR THEIR PREPARATION FROM A SUBSTITUTED EPSILON-CAPROLACTAM
    7.
    发明专利
    POLYAMIDES AND A PROCESS FOR THEIR PREPARATION FROM A SUBSTITUTED EPSILON-CAPROLACTAM 未知

    公开(公告)号：DE3062647D1

    公开(公告)日：1983-05-19

    申请号：DE3062647

    申请日：1980-01-03

    Applicant: TORAY INDUSTRIES

    Inventor： NAKATA MINORU ,  SATO HARUYO ,  IMAMURA SHINZO

    IPC: C08G69/14

    Abstract: Provided are polyamides having properties which make them useful as adhesives, sizing agents, paper strength enhancers and as resins. These polyamides are prepared by heating an alpha-(N,N-disubstituted amino)-E-caprolactam, alone or in combination with one or more comonomers, in the presence of an anionic polymerization catalyst, and are characterized by a repeating unit reprsented by the formula wherein R and R' are each a lower alkyl group or a cyclic amine residue, and also having a relative viscosity of at leasrt 1.5.

    INDOLE DERIVATIVES AND PROCESS FOR PREPARING THE SAME
    8.
    发明专利
    INDOLE DERIVATIVES AND PROCESS FOR PREPARING THE SAME 未知

    公开(公告)号：DE3161925D1

    公开(公告)日：1984-02-23

    申请号：DE3161925

    申请日：1981-03-27

    Applicant: TORAY INDUSTRIES

    Inventor： IMAMURA SHINZO ,  SATO HARUYO ,  KURAMOTO HIROYOSHI

    IPC: C07D209/20

    Abstract: Novel indole derivatives of the general formula I can be obtained by reacting, directly or indirectly, N,N-dimethyl-3-indolemethylamine with a Schiff base of the general formula II, I II in which R1 is cyano or methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl or butoxycarbonyl, and phi is phenyl. The successive hydrolysis of the indole derivatives of the general formula I in the presence of an acid and of a base gives tryptophane.

    PROCESS FOR THE PREPARATION OF ALKYL CARBOXYLATES
    9.
    发明公开
    PROCESS FOR THE PREPARATION OF ALKYL CARBOXYLATES 失效
    用于生产羧酸

    公开(公告)号：EP0854131A4

    公开(公告)日：1999-12-08

    申请号：EP97930828

    申请日：1997-07-17

    Applicant: TORAY INDUSTRIES ,  SODA AROMATIC

    Inventor： NIWA ATSUSHI ,  IMAMURA SHINZO ,  HASEBE AKIO ,  ITO NOBUHIKO

    IPC: C07C67/08 ,  B01J39/00 ,  C07C69/00 ,  C07C69/38

    CPC classification number: C07C67/08 ,  C07C69/34

    Abstract: A process for preparing high-purity alkyl carboxylates efficiently by esterifying a carboxylic acid with an alcohol in the presence of an acid catalyst, characterized in that a solid acid catalyst is used as the catalyst and that the esterification is completed by conducting dehydration in the course of the esterification to remove the formed water from the reaction system and thereafter resuming the esterification. The dialkyl esters of alkanedioic acids prepared by the process can suitably be used as intermediates for the preparation of drugs, agricultural chemicals, perfumes, dyes, liquid-crystal materials, polymers and so on.

    PRODUCTION OF ALPHA-KETOCARBOXYLIC ACID ESTER
    10.
    发明专利
    PRODUCTION OF ALPHA-KETOCARBOXYLIC ACID ESTER 失效

    公开(公告)号：JPH11315052A

    公开(公告)日：1999-11-16

    申请号：JP3823199

    申请日：1999-02-17

    Applicant: TORAY INDUSTRIES

    Inventor： ONO TAKAE ,  FUNABASHI KEIKO ,  IMAMURA SHINZO

    IPC: B01J31/02 ,  C07B61/00 ,  C07C67/313 ,  C07C69/716 ,  C07C69/732

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an α-ketocarboxylic acid ester by oxidizing a specific α-hydroxycarboxylic acid ester with hypochlorous acid in the presence of a specified hindered secondary amine under an acidic condition, capable of producing the α-ketocarboxylic acid ester from the general chemical agents in a high yield under as mild conditions as possible. SOLUTION: The method for producing an α-ketocarboxylic acid ester comprises oxidizing an α-ketocarboxylic acid ester of formula I [R is an alkyl, a cycloalkyl, a (substituted) aryl or an aralkyl; R is a 1-4C alkyl] (for example, methyl lactate or ethyl lactate) with hypochlorous acid in the presence of a hindered secondary amine of formula II (R is H, a

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