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    2.
    发明专利
    未知

    公开(公告)号：DE69716203T2

    公开(公告)日：2003-07-24

    申请号：DE69716203

    申请日：1997-07-30

    Applicant: MITSUI CHEMICALS INC

    Inventor： MIZUTA HIDEKI ,  TAKAOKA MASAZUMI ,  NAGATA TERUYUKI

    IPC: C07D233/32

    Abstract: In a process for reacting N,N'-dialkylethylenediamine with urea in an aprotic polar solvent to prepare 1,3-dialkyl-2-imidazolidinone, a process comprising progressing the reaction while continuously adding N,N'-dialkylethylenediamine and urea into the aprotic polar solvent, is disclosed. The process is a high-yield manufacturing process in industry capable of efficiently producing very high purity 1,3-dialkyl-2-imidazolidinone which contains less than 0.1% by weight of by-product 1,3-dialkyl-2-imidazolidinimine derived from the raw materials.

    6.
    发明专利
    未知

    公开(公告)号：DE69716203D1

    公开(公告)日：2002-11-14

    申请号：DE69716203

    申请日：1997-07-30

    Applicant: MITSUI CHEMICALS INC

    Inventor： MIZUTA HIDEKI ,  TAKAOKA MASAZUMI ,  NAGATA TERUYUKI

    IPC: C07D233/32

    Abstract: In a process for reacting N,N'-dialkylethylenediamine with urea in an aprotic polar solvent to prepare 1,3-dialkyl-2-imidazolidinone, a process comprising progressing the reaction while continuously adding N,N'-dialkylethylenediamine and urea into the aprotic polar solvent, is disclosed. The process is a high-yield manufacturing process in industry capable of efficiently producing very high purity 1,3-dialkyl-2-imidazolidinone which contains less than 0.1% by weight of by-product 1,3-dialkyl-2-imidazolidinimine derived from the raw materials.

    METHOD FOR PRODUCING 4,6-DIAMINORESORCIN DIHYDROCHLORIDE
    7.
    发明专利
    METHOD FOR PRODUCING 4,6-DIAMINORESORCIN DIHYDROCHLORIDE 审中-公开

    公开(公告)号：JP2003206267A

    公开(公告)日：2003-07-22

    申请号：JP2002003254

    申请日：2002-01-10

    Applicant: MITSUI CHEMICALS INC

    Inventor： KUMAMOTO YUKIHIRO ,  YOSHITOMI HIDETAKE ,  TAKAOKA MASAZUMI ,  MIZUTA HIDEKI ,  MATSUZAKI YORIAKI

    IPC: C07C213/08 ,  C07C213/10 ,  C07C215/80

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing 4,6-diaminoresorcin dihydrochloride, capable of effectively producing the 4,6-diaminoresorcin dihydrochloride from a solution containing the 4,6-diaminoresorcin dihydrochlorde by reducing the amount of a discharged waste fluid to the least possible extent. SOLUTION: This method for producing the 4,6-diaminoresorcin dihydrochloride includes (1) a first process for mixing the aqueous solution containing the 4,6-diaminoresorcin dihydrochloride with hydrochloric acid to form a hydrochloric acid aqueous solution containing the 4,6-diaminoresorcin dihydrochloride, (2) a second process for concentrating the hydrochloric acid aqueous solution containing the 4,6-diaminoresorcin dihydrochloride to form a concentrate in which the 4,6-diaminoresorcin dihydrochloride is deposited, subjecting the concentrate to solid-liquid separation, and recovering the deposited 4,6-diaminoresorcin dihydrochloride from the concentrate together with a filtrate, and (3) a third process for reusing the filtrate which is recovered in the second process, or the hydrochloric acid which is recovered from the filtrate, as the hydrochloric acid which is mixed with a new aqueous solution containing the 4,6-diaminoresorcin dihydrochloride in the first process. COPYRIGHT: (C)2003,JPO

    Method for producing aliphatic polyester
    9.
    发明专利
    Method for producing aliphatic polyester 审中-公开
    生产聚酯聚酯的方法

    公开(公告)号：JP2008156525A

    公开(公告)日：2008-07-10

    申请号：JP2006348181

    申请日：2006-12-25

    Applicant: Mitsui Chemicals Inc ,  三井化学株式会社

    Inventor： TERADO YUJI ,  JINNAI TAKASHI ,  TAKAOKA MASAZUMI ,  WADA MASARU

    IPC: C08G63/90 ,  C08L101/16

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an aliphatic polyester of improved yield compared with conventional method for polymerizing an aliphatic polyester. SOLUTION: An aliphatic polyester having a weight-average molecular weight of 100,000-600,000 and containing 0-2 wt.% aliphatic cyclic ester is produced by carrying out a ring-opening polymerization of an aliphatic cyclic ester (a) in molten state to obtain an aliphatic polyester (b) having a weight-average molecular weight of 100,000-600,000 and containing 20-70 wt.% aliphatic cyclic ester, granulating the product and bringing the granule into contact with an organic solvent in a state not to dissolve the aliphatic polyester. In the above method, the aliphatic cyclic ester present in the organic solvent after the contact with the aliphatic polyester is purified and the obtained aliphatic cyclic ester is used again as the polymerization raw material. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 待解决的问题：提供与用于聚合脂族聚酯的常规方法相比，生产脂肪族聚酯的产率提高的方法。 解决方案：重均分子量为100,000-600,000，含有0-2重量％脂族环酯的脂肪族聚酯通过在熔融状态下进行脂肪族环状酯（a）的开环聚合而制备 以获得重均分子量为100,000-600,000并含有20-70重量％的脂族环酯的脂族聚酯（b），将产物造粒并使颗粒与有机溶剂接触，其状态不为 溶解脂肪族聚酯。 在上述方法中，与脂肪族聚酯接触后存在于有机溶剂中的脂肪族环酯被纯化，得到的脂肪族环酯再次用作聚合原料。 版权所有（C）2008，JPO＆INPIT

    Method for preparing 1,5-diaminonaphthalene
    10.
    发明专利
    Method for preparing 1,5-diaminonaphthalene 有权
    制备1,5-二氨基萘甲酸的方法

    公开(公告)号：JP2006143611A

    公开(公告)日：2006-06-08

    申请号：JP2004332820

    申请日：2004-11-17

    Applicant: Mitsui Chemicals Inc ,  三井化学株式会社

    Inventor： KUMAMOTO YUKIHIRO ,  TAKAOKA MASAZUMI ,  WADA MASARU

    IPC: C07C209/14 ,  C07B61/00 ,  C07C201/12 ,  C07C205/06 ,  C07C205/26 ,  C07C211/57

    Abstract: PROBLEM TO BE SOLVED: To provide a new method for industrially advantageously preparing 1,5-diaminonaphthalene which does not by-produce a 1,8-diamino isomer and does not go through a relatively unstable nitroimine/nitroenamine as an intermediate. SOLUTION: 5-Nitro-1-tetralone is halogenated and dehydrohalogenated to be aromatized without using a large amount of a noble metal catalyst, and then reduced and aminated to industrially advantageously prepare 1,5-diaminonaphthalene. COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 待解决的问题：提供一种工业上有利地制备不产生1,8-二氨基异构体并不通过作为中间体的相对不稳定的硝基亚胺/硝基胺的1,5-二氨基萘的新方法。 解决方案：将5-硝基-1-四氢萘酮卤化并脱卤化氢以在不使用大量贵金属催化剂的情况下芳构化，然后在工业上还原和胺化有利地制备1,5-二氨基萘。 版权所有（C）2006，JPO＆NCIPI

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