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    Separation of toluene from non-aromatic hydrocarbons by extractive distillation
    5.
    发明授权
    Separation of toluene from non-aromatic hydrocarbons by extractive distillation 失效
    通过萃取蒸馏将甲苯与非芳烃分离

    公开(公告)号：US4363704A

    公开(公告)日：1982-12-14

    申请号：US323544

    申请日：1981-11-20

    申请人： Lloyd Berg

    发明人： Lloyd Berg

    IPC分类号： C07C7/08 ,  C07C57/145 ,  C07C63/16 ,  B01D3/40

    CPC分类号： C07C63/16 ,  C07C57/145 ,  C07C7/08

    摘要： Toluene is virtually impossible to separate from similar boiling non-aromatic hydrocarbons by conventional rectification or distillation. Toluene can be readily separated from similar boiling non-aromatic hydrocarbons by using extractive distillation in which the extractive agent is a mixture of phthalic anhydride and/or maleic anhydride plus a suitable solvent. A typical mixture comprises phthalic anhydride, maleic anhydride and glycerol triacetate.

    摘要翻译： 通过常规精馏或蒸馏，甲苯几乎不可能与类似的沸腾非芳族烃分离。 通过采用萃取剂是邻苯二甲酸酐和/或马来酸酐加合适的溶剂的混合物，萃取蒸馏可以容易地将甲苯与类似的沸点非芳族烃分离。 典型的混合物包括邻苯二甲酸酐，马来酸酐和甘油三乙酸酯。

    Chlorinated 4-methylphthalic anhydrides
    6.
    发明授权
    Chlorinated 4-methylphthalic anhydrides 失效
    氯化4-甲基邻苯二甲酸酐

    公开(公告)号：US4302396A

    公开(公告)日：1981-11-24

    申请号：US886563

    申请日：1978-04-24

    申请人： Michihiro Tsujimoto ,  Tsutomu Nishizawa ,  Kiyoharu Hasegawa ,  Nobuyoshi Abe

    发明人： Michihiro Tsujimoto ,  Tsutomu Nishizawa ,  Kiyoharu Hasegawa ,  Nobuyoshi Abe

    IPC分类号： C07D307/89 ,  C07C51/00 ,  C07C51/363 ,  C07C63/68 ,  C07C63/72 ,  C07C67/00 ,  C07C63/16

    CPC分类号： C07C63/68

    摘要： Novel chlorinated 4-methylphthalic acids or anhydrides of the general formula ##STR1## wherein n is an integer of 1, 2 or 3, with the proviso that when n is 1, the chlorine atom is positioned at 3- or 5-position and when n is 2, the chlorine atoms are positioned at 3- and 5-positions. The new compounds are produced by dissolving 4-methylphthalic anhydride in concentrated sulfuric acid or fuming sulfuric acid to form a solution, and reacting the solution with chlorine at room temperature preferably in the presence of a catalytic amount of iodine, thereby to yield a crude product containing a mixture of chlorinated 4-methylphthalic acids. By subjecting the mixture to a thermal dehydration treatment in an inactive organic solvent, each of the chlorinated compounds may be isolated as its corresponding anhydride in the form of crystals.These chlorinated 4-methylphthalic anhydrides are valuable as intermediates for the preparation of dyestuffs or pigments.

    摘要翻译： 新型氯代4-甲基邻苯二甲酸或通式为“IMAGE”的酸酐，其中n为1,2或3的整数，条件是当n为1时，氯原子位于3-或5-位，当 n为2，氯原子位于3-和5-位。 新化合物通过将4-甲基邻苯二甲酸酐溶解在浓硫酸或发烟硫酸中而形成溶液，并在室温下优选在催化量的碘存在下使溶液与氯反应，从而得到粗产物 含有氯代4-甲基邻苯二甲酸的混合物。 通过在惰性有机溶剂中对混合物进行热脱水处理，可以将各氯化化合物作为其相应的酸酐以晶体的形式分离。 这些氯代4-甲基邻苯二甲酸酐作为制备染料或颜料的中间体是有价值的。

    METHOD OF PRODUCING ETHYNYL COMPOUND, METHOD OF HANDLING ETHYNYL COMPOUND, AND METHOD OF USING ASCORBIC ACID OR SALT THEREOF
    8.
    发明申请
    METHOD OF PRODUCING ETHYNYL COMPOUND, METHOD OF HANDLING ETHYNYL COMPOUND, AND METHOD OF USING ASCORBIC ACID OR SALT THEREOF 审中-公开
    乙炔化合物的制造方法，乙炔化合物的处理方法及使用抗坏血酸或其盐的方法

    公开(公告)号：US20080287705A1

    公开(公告)日：2008-11-20

    申请号：US12042963

    申请日：2008-03-05

    申请人： Daisuke Urazoe

    发明人： Daisuke Urazoe

    IPC分类号： C07C63/16 ,  C07C63/64 ,  C07C211/44 ,  C07C233/65 ,  C07C39/18

    CPC分类号： C07C209/68 ,  C07C51/09 ,  C07C211/45

    摘要： A method of producing a first ethynyl compound represented by the following formula (1), the method including reacting a second ethynyl compound represented by the following formula (2) in a liquid phase in the presence of a reducing agent to obtain the first ethynyl compound, wherein Q1 represents an organic group; R1 and R2 each independently represent a hydrogen atom or a hydrocarbon group; and R1 and R2 may be bonded to each other.

    摘要翻译： 一种由下式（1）表示的第一乙炔基化合物的制造方法，其特征在于，在还原剂的存在下，使由下述式（2）表示的第二乙炔基化合物在液相中反应，得到第一乙炔基化合物 其中Q 1表示有机基团; R 1和R 2各自独立地表示氢原子或烃基; R 1和R 2可以彼此键合。

    Process for recovering phthalic anhydride and hydrogen chloride from plastic materials
    9.
    发明授权
    Process for recovering phthalic anhydride and hydrogen chloride from plastic materials 失效
    从塑料材料中回收邻苯二甲酸酐和氯化氢的方法

    公开(公告)号：US5686055A

    公开(公告)日：1997-11-11

    申请号：US362270

    申请日：1994-12-22

    申请人： Toshiki Takahashi ,  Tatsuto Fukushima ,  Yoshio Tanimoto ,  Akemi Muraoka

    发明人： Toshiki Takahashi ,  Tatsuto Fukushima ,  Yoshio Tanimoto ,  Akemi Muraoka

    IPC分类号： C07C51/56 ,  C07C63/16 ,  C01B7/07 ,  C07D307/89

    CPC分类号： C07C51/56 ,  C07C63/16

    摘要： There is provided a process to recover phthalic anhydride from a plastic material which contains a phthalate ester as a plasticizer comprising the steps of: (a) heating the plastic material so that the plastic material is gasified to produce a first product, (b) contacting the first product with alumina catalyst so that the product is catalytically cracked to produce a first catalytically cracked product comprising phthalic anhydride; and (c) recovering phthalic anhydride from the first catalytically cracked product.

    摘要翻译： 提供了从包含邻苯二甲酸酯作为增塑剂的塑料材料回收邻苯二甲酸酐的方法，其包括以下步骤：（a）加热塑料材料，使塑料材料气化以产生第一产品，（b）接触 第一产品具有氧化铝催化剂，使得产物被催化裂化以产生包含邻苯二甲酸酐的第一催化裂化产物; 和（c）从第一催化裂化产物中回收邻苯二甲酸酐。