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18 条记录 (耗时 0.011 秒)

    1,3,6-Trialkylhexahydro-1,3,6-triazocine-2-one and preparation process thereof
    1.
    发明公开
    1,3,6-Trialkylhexahydro-1,3,6-triazocine-2-one and preparation process thereof 失效
    1,3,6-三烷基六氢-1,3,6-三唑菌啉-2-和Verfahren zu seiner Herstellung。

    公开(公告)号：EP0670316A1

    公开(公告)日：1995-09-06

    申请号：EP95102787.9

    申请日：1995-02-27

    申请人： MITSUI TOATSU CHEMICALS, Inc.

    发明人： Naruse, Hiroshi ,  Mizuta, Hideki ,  Umeda, Shinichi ,  Nagata, Teruyuki

    IPC分类号： C07D255/02

    CPC分类号： C07D255/02

    摘要： The present invention relates to 1,3,6-Trialkylhexahydro-1,3,6-triazocine-2-on represented by the formula (1) :

    wherein R is a C₁ ∼C₈ alkyl group and a preparation process of the compound comprising reacting N,N',N''-trialkyldiethylenetriamine represented by the formula (2) :

    wherein R is a C₁ ∼C₈ alkyl group, with urea, phosgene or carbon dioxide.

    摘要翻译： 本发明涉及由式（1）表示的1,3,6-三烷基六氢-1,3,6-三氮杂辛-2-酮：其中R是C 1 -C 8烷基的CHEM，其制备方法 包括由式（2）表示的N，N'，N“ - 三烷基二亚乙基三胺：其中R是C 1 -C 8烷基的CHEM与尿素，光气或二氧化碳反应。

    Process for producing 1,3-dialkyl-2-imidazolidinone
    8.
    发明公开
    Process for producing 1,3-dialkyl-2-imidazolidinone 失效
    一种用于制备1,3-二烷基-2-咪唑啉酮的过程。

    公开(公告)号：EP0198345A1

    公开(公告)日：1986-10-22

    申请号：EP86104563.1

    申请日：1986-04-03

    申请人： MITSUI TOATSU CHEMICALS, Inc.

    发明人： Nagata, Teruyuki ,  Kajimoto, Nobuyuki ,  Wada, Masaru ,  Mizuta, Hideki ,  Tamaki, Akihiro

    IPC分类号： C07D233/32

    CPC分类号： C07D233/32

    摘要： An improved process of producing 1,3-dialkyl-2-imidazo- lidinones directly from N,N'-dialkylethylenediamine and urea with a high yield is provided, which process comprises reacting a N, N'-dialkylethylenediamine of the formula
    wherein R represents -CH 3 , -C 2 H 5 , -C 3 H 7 or -C 4 H 9 , with urea at 180°C or higher in the presence of a polar solvent, to obtain a 1,3-dialkyl-2-imidazolidinone of the formula
    and preferably comprises carrying out the reaction at two stages, that is, the initial period reaction being carried out at 140°C or lower to from a 1,1'-dialkyl-1,1'-dimethylenebisurea and successively the latter reaction being carried out at 180°C or higher.

    Process for preparing polycondensation polymers
    9.
    发明公开
    Process for preparing polycondensation polymers 失效
    Verfahren zur Herstellung von Polykondensationspolymeren

    公开(公告)号：EP0769512A2

    公开(公告)日：1997-04-23

    申请号：EP96116815.0

    申请日：1996-10-18

    申请人： MITSUI TOATSU CHEMICALS, INC.

    发明人： Tamai, Shoji ,  Mori, Yukiko ,  Goto, Kenichi ,  Watanabe, Katsuji ,  Kohgo, Osamu ,  Shimizu, Kotaro ,  Kataoka, Toshiyuki ,  Kuroki, Takashi ,  Yamashita, Wataru ,  Mizuta, Hideki ,  Nagata, Teruyuki

    IPC分类号： C08G69/04 ,  C08G69/26 ,  C08G73/10 ,  C08G75/26 ,  C08G63/87 ,  C08G63/82

    CPC分类号： C08G73/1007 ,  C08G63/823 ,  C08G63/87 ,  C08G69/04 ,  C08G69/28 ,  C08G75/26

    摘要： The invention provides a novel preparation process of a polycondensation type polymer, an excellent polymer which is represented by lactic acid and the preparation process of the polymer, a polycondensation agent used for the preparation process, and an intermediate. Specifically, the invention provides a preparation process of the polycondensation type polymer, for example, polyamide, polyimide, polythioester and polyester, comprising bonding a carboxyl group comprising compound with an active hydrogen group comprising compound in the presence of haloiminium salt. The invention provides excellent polylactic acid having a controlled D/L-isomer ratio in the repeating structural units and preparation process of polylactic acid, and further provides a haloiminium salt compound used for the preparation process and an intermediate compound of acid chloride.

    摘要翻译： 本发明提供了一种缩聚型聚合物的新型制备方法，由乳酸代表的优异聚合物和聚合物的制备方法，用于制备方法的缩聚剂和中间体。 具体地说，本发明提供缩聚型聚合物，例如聚酰胺，聚酰亚胺，聚硫酯和聚酯的制备方法，包括在卤代鎓盐的存在下将含羧基的化合物与含有活性氢的化合物结合。 本发明提供了在重复结构单元和聚乳酸的制备方法中具有受控的D / L异构体比例的优异的聚乳酸，并且还提供了用于制备方法的卤代亚铵盐化合物和酰氯的中间体化合物。