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44 条记录 (耗时 0.025 秒)

    Process for producing cellulose acetate
    33.
    发明授权
    Process for producing cellulose acetate 失效
    生产乙酸纤维素的方法

    公开(公告)号：US4439605A

    公开(公告)日：1984-03-27

    申请号：US433615

    申请日：1982-10-12

    申请人： Hideo Yabune ,  Yoshiyuki Ikemoto ,  Younosuke Kato ,  Manabu Uchida

    发明人： Hideo Yabune ,  Yoshiyuki Ikemoto ,  Younosuke Kato ,  Manabu Uchida

    IPC分类号： C08B3/06 ,  C08B3/24

    CPC分类号： C08B3/24 ,  C08B3/06

    摘要： A process for producing cellulose diacetate is disclosed which comprises the steps of:(a) pretreating and activating 100 parts by weight of cellulose, adding a mixture of 200 to 400 parts of acetic anhydride, 0 to 350 parts of glacial acetic acid, and 0.5 to 5 parts of acid catalyst, heating the reactants to a temperature from 50.degree. C. to 85.degree. C. at approximately a constant rate, maintaining this temperature for 3 to 20 minutes, thereby acetylating cellulose to form primary cellulose acetate;(b) neutralizing the acid catalyst in the reaction mixture containing primary cellulose acetate obtained in step (a), introducing steam under pressure into the system to change the temperature of the system to 125.degree. C. to 170.degree. C., and maintaining this temperature for 30 minutes to 6 hours, thereby hydrolyzing the primary cellulose acetate to accomplish ripening; and(c) flashing the ripened reaction mixture at a temperature of 125.degree. C. to 170.degree. C. by discharging same to the ambient atmosphere, recovering by condensation the gas generated during flashing having an acetic acid/water weight ratio of 70-80/30-20, and simultaneously cooling the remaining liquid reaction mixture to about 100.degree. C., thereby substantially stopping the hydrolysis reaction.

    摘要翻译： 公开了一种制备纤维素二乙酸酯的方法，其包括以下步骤：（a）预处理和活化100重量份的纤维素，加入200-400份乙酸酐，0-350份冰乙酸和0.5份 至5份酸催化剂，以大约恒定速率将反应物加热至50℃至85℃的温度，将该温度保持3至20分钟，由此乙酰化纤维素以形成乙酸纤维素; （b）中和在步骤（a）中获得的含有初级纤维素乙酸酯的反应混合物中的酸催化剂，将压力下的蒸汽引入体系中以将体系的温度改变至125℃至170℃，并保持该 温度30分钟至6小时，从而水解初级纤维素乙酸酯以达到熟化; 和（c）将熟化的反应混合物在125℃至170℃的温度下闪蒸，通过将其排放到环境大气中，通过冷凝回收，在闪蒸期间产生的气体具有70-80的乙酸/水重量比 / 30-20，同时将剩余的液体反应混合物冷却至约100℃，从而基本上停止水解反应。

    Organic electroluminescent device containing dithiafulvene derivative
    38.
    发明授权
    Organic electroluminescent device containing dithiafulvene derivative 失效
    含有二噻吩衍生物的有机电致发光器件

    公开(公告)号：US06617053B2

    公开(公告)日：2003-09-09

    申请号：US09920850

    申请日：2001-08-03

    申请人： Yuichi Fujishita ,  Manabu Uchida ,  Takaharu Nakano ,  Kenji Furukawa

    发明人： Yuichi Fujishita ,  Manabu Uchida ,  Takaharu Nakano ,  Kenji Furukawa

    IPC分类号： H05B3312

    CPC分类号： H01L51/0051 ,  H01L51/5012 ,  Y10S428/917

    摘要： An organic electroluminescent device having a high luminous efficiency and a long life, which comprises a dithiafulvene derivative represented by Formula (1): wherein R1 and R2 represent an alkyl group, an aryl group or a heterocyclic group; R3 to R6 represent a hydrogen atom, an alkyl group, an alkenyl group, an alkylthio group, an arylthio group, an aryl group or a heterocyclic group; and when R3 to R6 are an aryl group or a heterocyclic group adjacent to each other, they may be condensed to each other.

    摘要翻译： 一种具有高发光效率和长寿命的有机电致发光器件，其包含由式（1）表示的二噻吩衍生物：其中R1和R2表示烷基，芳基或杂环基; R3至R6表示氢原子，烷基，烯基，烷硫基，芳硫基，芳基或杂环基; 并且当R 3至R 6为彼此相邻的芳基或杂环基时，它们可以彼此稠合。

    Diaminonaphthalene derivative and organic electroluminescent device using the same
    39.
    发明授权
    Diaminonaphthalene derivative and organic electroluminescent device using the same 失效
    二氨基萘衍生物和使用其的有机电致发光器件

    公开(公告)号：US06376106B1

    公开(公告)日：2002-04-23

    申请号：US09212485

    申请日：1998-12-16

    申请人： Manabu Uchida ,  Toshihiro Koike ,  Takenori Izumizawa ,  Kenji Furukawa

    发明人： Manabu Uchida ,  Toshihiro Koike ,  Takenori Izumizawa ,  Kenji Furukawa

    IPC分类号： H05B3312

    CPC分类号： H05B33/14 ,  C07C211/58 ,  C09K11/06 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0071 ,  H01L51/0072 ,  H01L51/0081 ,  H01L51/0094 ,  H01L51/5012 ,  H01L2251/308 ,  Y10S428/917

    摘要： A diaminonaphthalene derivative of formula (1): wherein R21 to R30 independently and individually represent a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C1-C6 alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, the substituted or unsubstituted aryl group or the substituted or unsubstituted heterocyclic group may be condensed with the corresponding benzene ring at an arbitrary position of the benzene ring; and each of X and Y represents a hydrogen atom or a substituted or unsubstituted amino group, wherein at least one of the X or Y represents a substituted or unsubstituted amino group. The derivative is incorporated into an organic electroluminescent device (organic EL device), and serves as a hole-transportation layer, a luminescence layer, etc. The organic EL device containing the derivative exhibits high luminous efficacy and a prolonged service life.

    摘要翻译： 式（1）的二氨基萘衍生物：其中R21至R30独立地和单独表示氢原子，卤素原子，C1-C6烷基，C1-C6烷氧基，取代或未取代的氨基，取代或未取代的 芳基或取代或未取代的杂环基，取代或未取代的芳基或取代或未取代的杂环基可以在苯环的任意位置与相应的苯环稠合; 并且X和Y各自表示氢原子或取代或未取代的氨基，其中X或Y中的至少一个表示取代或未取代的氨基。 衍生物掺入有机电致发光器件（有机EL器件）中，用作空穴传输层，发光层等。含有衍生物的有机EL器件具有高发光效率和较长的使用寿命。

    Red-emitting material and organic electroluminescent device made by using the same
    40.
    发明授权
    Red-emitting material and organic electroluminescent device made by using the same 失效
    红色发光材料和使用其制成的有机电致发光器件

    公开(公告)号：US06333122B1

    公开(公告)日：2001-12-25

    申请号：US09202999

    申请日：1999-07-06

    申请人： Kenji Furukawa ,  Takenori Izumizawa ,  Manabu Uchida

    发明人： Kenji Furukawa ,  Takenori Izumizawa ,  Manabu Uchida

    IPC分类号： H05B3314

    CPC分类号： H05B33/14 ,  C09K11/06 ,  H01L51/5012 ,  Y10S428/917

    摘要： A red emitting material consisting of porphyrin, wherein the fluorescence of porphyrin is utilized. Metalloporphyrin can also be used as the porphyrin. An organic electroluminescent element having a porphyrin containing light emitting. The porphyrin content in the light emitting layer may be 1.0% by weight or more. The light emitting layer functions as a hole injection and transport layer or an electron injection and transport layer. Alternatively, it may be possible to further provide a hole injection and transport layer or an electron injection and transport layer.

    摘要翻译： 由卟啉组成的红色发射材料，其中使用卟啉的荧光。 金卟啉也可以用作卟啉。 具有含有发光的卟啉的有机电致发光元件。 发光层中的卟啉含量可以为1.0重量％以上。 发光层用作空穴注入传输层或电子注入和传输层。 或者，可以进一步提供空穴注入和传输层或电子注入和传输层。