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93 条记录 (耗时 0.018 秒)

    Composition for low-specific gravity urethane-base plastic lens
    5.
    发明公开
    Composition for low-specific gravity urethane-base plastic lens 失效
    ZusammensetzungfürKunststofflinsen mit niedrigem spezifischem Gewicht auf Urethanbasis。

    公开(公告)号：EP0676428A1

    公开(公告)日：1995-10-11

    申请号：EP95302123.5

    申请日：1995-03-29

    申请人： MITSUI TOATSU CHEMICALS, Inc.

    发明人： Okazaki, Koju ,  Kanemura, Yoshinobu ,  Nagata, Teruyuki

    IPC分类号： C08G18/38

    CPC分类号： C08G18/3876 ,  C08G18/3203 ,  C08G18/3863 ,  G02B1/041 ,  C08L75/04

    摘要： The present invention is concerned with a composition for a low-specific gravity urethane-base plastic lens which comprises an iso(thio)cyanate compound and an active hydrogen compound selected so as to meet the formula (1) (A1 + kA2)D1 x D2 A1 x D2 + kA2 x D1 ≦ 1.136
    wherein A1 = A1-M A1-N

    A1-M: the molecular weight of the iso(thio)cyanate compound, and
    A1-N: the number of the functional group of the iso(thio)cyanate compound,
    A2 = A2-M A2-N

    A2-M: the molecular weight of the active hydrogen compound, and
    A2-N: the number of the functional group of the active hydrogen compound,
    D1 = the specific gravity of the iso(thio)cyanate compound,
    D2 = the specific gravity of the active hydrogen compound, and
    k = mole number of an active hydrogen group mole number of the iso(thio)cyanate group.
    a process for preparing a low-specific gravity urethane-base plastic lens which comprises the steps of mixing and then heating the composition to harden the same, and a plastic lens obtained by the preparation process, which lens has a low specific gravity of 1.22 or less.

    摘要翻译： 本发明涉及一种低比重重量氨基甲酸乙酯基塑料透镜的组合物，其包含异（硫）氰酸酯化合物和选择为满足式（1）的活性氢化合物，其中 A1-M：异（硫代）氰酸酯化合物的分子量，A1-N：异（硫代）氰酸酯化合物的官能团数， A2-M：活性氢的分子量 化合物和A2-N：活性氢化合物的官能团数，D1 =异（硫代）氰酸酯化合物的比重，D2 =活性氢化合物的比重，和 用于制备低比重重量的聚氨酯基塑料透镜，其包括混合然后加热组合物以使其硬化的步骤，以及通过制备方法获得的塑料透镜，该透镜具有1.22以下的低比重。

    1,3,6-Trialkylhexahydro-1,3,6-triazocine-2-one and preparation process thereof
    6.
    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。

    Method for extracting amino acid ester
    9.
    发明公开
    Method for extracting amino acid ester 失效
    Verfahren zur Extraktion einesAminosäureesters。

    公开(公告)号：EP0474096A1

    公开(公告)日：1992-03-11

    申请号：EP91114352.7

    申请日：1991-08-27

    申请人： MITSUI TOATSU CHEMICALS, Inc.

    发明人： Kamashita, Tomoko ,  Yamashita, Hiroyuki ,  Nagata, Teruyuki ,  Ajioka, Masanobu

    IPC分类号： C07C227/40 ,  C07C229/36 ,  C07C229/02 ,  C07C229/56

    CPC分类号： C07C227/40

    摘要： The present invention discloses a method for extracting an amino acid ester, which method comprises adding a water-insoluble organic solvent to a hydrous solution containing a mineral acid salt of an amino acid ester, then adding a base thereto to liberate the amino acid ester, and transferring the amino acid ester into the organic layer, which method is characterized in that the extraction is carried out by keeping the pH of the aqueous layer at 7-8.

    摘要翻译： 本发明公开了一种提取氨基酸酯的方法，该方法包括向含有氨基酸酯的无机酸盐的含水溶液中加入水不溶性有机溶剂，然后加入碱以释放出氨基酸酯， 并将氨基酸酯转移到有机层中，该方法的特征在于通过将水层的pH保持在7-8进行萃取。