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    • 4. 发明授权
    • Method for stabilizing rhodium compound
    • 稳定铑化合物的方法
    • US5516735A
    • 1996-05-14
    • US327330
    • 1994-10-21
    • Hiroto Tanigawa
    • Hiroto Tanigawa
    • B01J27/32B01J27/13B01J31/40C07B61/00C07C51/12C07C51/56C07C51/573C07C53/12B01J20/34
    • C07C51/56B01J31/0212B01J31/0231B01J31/04B01J31/1805B01J31/20B01J31/2234B01J31/2404B01J31/26B01J31/4046C07C51/12C07C51/573B01J2531/31B01J2531/822B01J27/08B01J31/146Y02P20/584
    • A concentrated catalyst solution provided in the carbonylation reaction in which methyl acetate or dimethyl ether is chemically bonded with carbon monoxide in the presence of a catalyst system comprising a rhodium compound and an alkali metal iodide to produce acetic anhydride is subjected to a carbonylation treatment with carbon monoxide or a mixture of carbon monoxide and hydrogen before it is applied to a process for separating the tar contained in the catalyst solution, thereby increasing the iodide ion content of the catalyst solution, thus enabling the rhodium compound to be stabilized.When the concentration of the iodide ion in the concentrated catalyst solution is increased by this method, there is no possibility of the balances between the rhodium concentration and, the alkali metal concentration and the iodine concentration of the carbonylation reaction system being disturbed even when the catalyst solution as reprocessed is returned to the carbonylation reaction system. Further, the increase in the iodide ion concentration of the concentrated catalyst solution enables the rhodium compound contained in the concentrated catalyst solution to be stabilized, which prevents the rhodium compound from settling from the catalyst solution even during the heat treatment conducted for the purpose of removing components each having a low-boiling point contained in the catalyst solution before the process for separating and removing tar from the concentrated catalyst solution, so that the loss of the very expensive rhodium compound can be minimized.
    • 在羰基化反应中提供的浓缩催化剂溶液中,其中乙酸甲酯或二甲醚在包含铑化合物和碱金属碘化物的催化剂体系存在下与一氧化碳结合以制备乙酸酐进行羰基化处理 一氧化碳或一氧化碳和氢气的混合物,然后再用于分离催化剂溶液中所含的焦油的方法,从而增加催化剂溶液的碘离子含量,从而使铑化合物稳定。 当通过该方法增加浓缩催化剂溶液中的碘离子浓度时,即使催化剂中的铑浓度与羰基化反应体系的碱金属浓度和碘浓度之间也不会有平衡, 再次处理的溶液返回到羰基化反应体系。 此外,浓缩催化剂溶液的碘离子浓度的增加使得浓缩催化剂溶液中所含的铑化合物能够稳定,从而即使在为了除去目的进行的热处理中也可以使铑化合物从催化剂溶液中沉降 在浓缩催化剂溶液中分离除去焦油的方法之前,在催化剂溶液中含有低沸点的组分,从而可以使非常昂贵的铑化合物的损失最小化。
    • 5. 发明申请
    • High-Purity Cycloaliphatic Diepoxy Compound and Preparation Process Thereof
    • 高纯度环脂肪族二环氧化合物及其制备方法
    • US20080045729A1
    • 2008-02-21
    • US11792782
    • 2005-12-27
    • Hideyuki TakaiHiroto TanigawaKatsuya Maruo
    • Hideyuki TakaiHiroto TanigawaKatsuya Maruo
    • C07D303/04C07D301/14
    • C07D303/04
    • A high-purity cycloaliphatic diepoxy compound of General Formula (II) is an epoxidized product of a cycloaliphatic diolefinic compound of General Formula (I) having an isomer content as detected in gas chromatography (GC) of 15% or less: wherein X represents a bivalent group selected from the group consisting of, for example, O, S, —SO—, —SO2—, —CH2—, and —C(CH3)2—; and R1 to R18 may be the same as or different from each other and each represent hydrogen atom, a halogen atom, a hydrocarbon group which may contain oxygen atom or a halogen atom, or an alkoxy group which may be substituted. Such a high-purity cycloaliphatic diepoxy compound is prepared by producing the cycloaliphatic diolefinic compound through distillation, epoxidizing the compound with an aliphatic percarboxylic acid containing substantially no water, carrying out desolvation, and further purifying the epoxidized compound through distillation.
    • 通式(II)的高纯度脂环族二环氧化合物是通式(I)的脂环族二烯烃化合物的环氧化产物,其具有在气相色谱(GC)中检测到的异构体含量为15%以下:其中X表示 选自例如O,S,-SO-,-SO 2 - , - CH 2 - 和-C(CH 3) 2→3 R 1〜R 18可以相同或不同,表示氢原子,卤素原子,可含有氧原子的烃基或 卤素原子或可被取代的烷氧基。 这样的高纯度脂环族二环氧化合物是通过蒸馏生产环脂族二烯化合物,通过用基本上不含水的脂肪族过羧酸进行脱氧,进行去溶剂化,并通过蒸馏进一步纯化环氧化合物来制备的。
    • 7. 发明授权
    • High-purity cycloaliphatic diepoxy compound and preparation process thereof
    • 高纯度脂环族二环氧化合物及其制备方法
    • US07732627B2
    • 2010-06-08
    • US11792782
    • 2005-12-27
    • Hideyuki TakaiHiroto TanigawaKatsuya Maruo
    • Hideyuki TakaiHiroto TanigawaKatsuya Maruo
    • C07D301/14
    • C07D303/04
    • A high-purity cycloaliphatic diepoxy compound of General Formula (II) is an epoxidized product of a cycloaliphatic diolefinic compound of General Formula (I) having an isomer content as detected in gas chromatography (GC) of 15% or less: wherein X represents a bivalent group selected from the group consisting of, for example, O, S, —SO—, —SO2—, —CH2—, and —C(CH3)2—; and R1 to R18 may be the same as or different from each other and each represent hydrogen atom, a halogen atom, a hydrocarbon group which may contain oxygen atom or a halogen atom, or an alkoxy group which may be substituted. Such a high-purity cycloaliphatic diepoxy compound is prepared by producing the cycloaliphatic diolefinic compound through distillation, epoxidizing the compound with an aliphatic percarboxylic acid containing substantially no water, carrying out desolvation, and further purifying the epoxidized compound through distillation.
    • 通式(II)的高纯度脂环族二环氧化合物是通式(I)的脂环族二烯烃化合物的环氧化产物,其具有在气相色谱(GC)中检测到的异构体含量为15%以下:其中X表示 选自例如O,S,-SO-,-SO 2 - , - CH 2 - 和-C(CH 3)2 - 的二价基团; R 1〜R 18可以相同也可以不同,表示氢原子,卤原子,可以含有氧原子或卤素原子的烃基或可以被取代的烷氧基。 这样的高纯度脂环族二环氧化合物是通过蒸馏生产环脂族二烯化合物,通过用基本上不含水的脂肪族过羧酸进行脱氧,进行去溶剂化,并通过蒸馏进一步纯化环氧化合物来制备的。
    • 9. 发明授权
    • Method for stabilizing rhodium compound
    • 稳定铑化合物的方法
    • US5385875A
    • 1995-01-31
    • US184981
    • 1994-01-24
    • Hiroto Tanigawa
    • Hiroto Tanigawa
    • B01J27/32B01J27/13B01J31/40C07B61/00C07C51/12C07C51/56C07C51/573C07C53/12B01J38/68
    • C07C51/56B01J31/0212B01J31/0231B01J31/04B01J31/1805B01J31/20B01J31/2234B01J31/2404B01J31/26B01J31/4046C07C51/12C07C51/573B01J2531/31B01J2531/822B01J27/08B01J31/146Y02P20/584
    • A concentrated catalyst solution used in a carbonylation reaction in which methyl acetate or dimethyl ether is chemically bonded with carbon monoxide in the presence of a catalyst system comprising a rhodium compound and an alkali metal iodide to produce acetic anhydride is subjected to a carbonylation treatment with carbon monoxide, or a mixture of carbon monoxide and hydrogen, before it is applied to a process for separating the tar contained in the catalyst solution, thereby increasing the iodide ion content of the catalyst solution and enabling the rhodium compound to be stabilized.The balances between the rhodium concentration, the alkali metal concentration and the iodine concentration of the carbonylation reaction system are not disturbed, even when the catalyst solution as reprocessed is returned to the carbonylation reaction system. Further, the increase in the iodide ion concentration of the concentrated catalyst solution enables the rhodium compound contained in the concentrated catalyst solution to be stabilized, and prevents the rhodium compound from settling from the catalyst solution, even during heat treatment conducted for the purpose of removing components having a low-boiling point contained in the catalyst solution before the process for separating and removing tar from the concentrated catalyst solution, so that the loss of the very expensive rhodium compound can be minimized.
    • 在羰基化反应中使用的浓缩催化剂溶液,其中在包含铑化合物和碱金属碘化物的催化剂体系存在下,乙酸甲酯或二甲醚与一氧化碳化学键合以制备乙酸酐进行羰基化处理,用碳 一氧化碳或一氧化碳和氢气的混合物,然后再用于分离催化剂溶液中所含的焦油的方法,从而提高催化剂溶液的碘离子含量,并使铑化合物稳定。 即使当再加工的催化剂溶液返回羰基化反应体系时,铑浓度,碱金属浓度和羰基化反应体系的碘浓度之间的平衡也不会受到干扰。 此外,浓缩催化剂溶液的碘离子浓度的增加使得浓缩催化剂溶液中所含的铑化合物能够稳定,并且即使在为了除去目的进行热处理时也能够防止铑化合物从催化剂溶液中沉降 在浓缩催化剂溶液中分离除去焦油的方法之前,在催化剂溶液中含有低沸点的组分,从而可以使非常昂贵的铑化合物的损失最小化。