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63 条记录 (耗时 0.02 秒)

    Expandable polymeric composition
    2.
    发明授权
    Expandable polymeric composition 失效
    可膨胀聚合物组合物

    公开(公告)号：US3798188A

    公开(公告)日：1974-03-19

    申请号：US3798188D

    申请日：1971-10-12

    申请人： MITSUI TOATSU CHEMICALS

    发明人： TAKIZAWA M ,  MIYAMOTO K ,  ASAHI M ,  NAKAMOTO M

    IPC分类号： C08J9/06 ,  C08J1/20

    CPC分类号： C08J9/06

    摘要： A POLYMERIC COMPOSITION COMPOSED OF A POLYMERIC THERMOPLASTIC MATERIAL AND 0.01-20% BY WEIGHT OF A UREA DERIVATIVE OF THE FORMULA:

    R1-O-CH2-NH-CO-NH-R2

    WHEREIN R1 IS HYDROGEN OR ALKYL OF 1-5 CARBON ATOMS AND R2 IS HYDROGEN OR -CH2OR1. THE UREA DERIVATIVE UNDERGOES CONDENSATION WITH THE SEPARATION OF WATER AND SIMPLE ALCOHOLS AND FUNCTIONS AS A CHEMICAL BLOWING AGENT AT AN ELEVATED TEMPERATURE WITHIN THE RANGE OF 100 TO 270* C.

    Vat dyes
    3.
    发明授权
    Vat dyes 失效
    增值税DYES

    公开(公告)号：US3741994A

    公开(公告)日：1973-06-26

    申请号：US3741994D

    申请日：1970-04-07

    申请人： MITSUI TOATSU CHEMICALS

    发明人： FUJII F ,  KURAHARA K ,  YAMAMOTO T ,  IGATA A ,  ABE N

    IPC分类号： C09B5/40 ,  C09B15/00

    CPC分类号： C09B5/40

    摘要： New brown vat dyes prepared by heating a compound of the formula

    IN A MELT COMPRISING ANHYDROUS ALUMINUM CHLORIDE AND UREA, PYRIDINE, PICOLINE OR LUTIDINE OR A COMBINATION THEREOF, IF DESIRED, IN THE PRESENCE OF A HALOGENATING AGENT. Said dyes are suitable for dyeing various kinds of fibrous material, but as they can not be directly defined by a structural formula, they are defined by the process for preparing them.

    摘要翻译： 通过加热包含无机氯化铝和尿素，吡啶，吡啶或马来酸或其组合的式I化合物的化合物制备的新的褐色染料染料，如果在存在的情况下要求的话。 所述染料适用于各种纤维材料的染色，但由于它们不能直接由结构式定义，所以它们由制备它们的方法定义。

    Method for synthesizing urea
    4.
    发明授权
    Method for synthesizing urea 失效
    尿素合成方法

    公开(公告)号：US3686305A

    公开(公告)日：1972-08-22

    申请号：US3686305D

    申请日：1969-02-19

    申请人： MITSUI TOATSU CHEMICALS

    发明人： OTSUKA EIJI ,  KANAI KAZUMICHI ,  INOUE SHIGERU

    IPC分类号： C07C273/04 ,  C07C127/00

    CPC分类号： C07C273/04

    摘要： A process for synthesizing urea comprising reacting carbon dioxide and ammonia at urea forming temperatures and pressures to produce a reaction mixture containing urea, water, unreacted ammonium carbamate, gaseous carbon dioxide and gaseous ammonia, introducing said reaction mixture into a heat recovering zone to recover excess heat of reaction thereby condensing most of said gaseous carbon dioxide and gaseous ammonia contained in reaction mixture, and further reacting the reaction mixture from said heat recovering zone to form additional urea.

    摘要翻译： 一种用于合成尿素的方法，包括在尿素形成温度和压力下使二氧化碳和氨反应以产生含有尿素，水，未反应的氨基甲酸铵，气态二氧化碳和气态氨的反应混合物，将所述反应混合物引入热回收区以回收过量 反应热由此冷凝反应混合物中所含的大部分气态二氧化碳和气态氨，并进一步使来自所述热回收区的反应混合物反应形成额外的尿素。