Process for preparing 1,4-cyclohexandicarboxylic acid
    2.
    发明授权
    Process for preparing 1,4-cyclohexandicarboxylic acid 失效
    制备1,4-环己烷二羧酸的方法

    公开(公告)号:US5430184A

    公开(公告)日:1995-07-04

    申请号:US169132

    申请日:1993-12-17

    CPC分类号: C07C51/36 C07C51/44

    摘要: An economic hydrogenation process is provided which significantly suppresses palladium catalyzer activity loss, for obtaining very high purity 1,4-CHDA through a simple operation. The process includes bringing the solution containing the hydrogenation reaction product of interest into contact with steam. The resultant products may include resins having excellent weather resistance or physical properties or high purity medical drugs. The process for preparing 1,4-cyclohexandicarboxylic acid is characterized by two consecutive steps. The first step includes the hydrogenation of a solution containing terephthalic acid in the presence of a palladium catalyzer in an acid resistant vessel or in a vessel layered with acid resistant material for preparing 1,4-cyclohexandicarboxylic acid. The second step includes contacting the solution containing 1,4-cyclohexandicarboxylic acid obtained in the first step with the steam, and extracting impurities moved to the steam.

    摘要翻译: 提供经济的氢化方法,其显着抑制钯催化剂活性损失,以通过简单的操作获得非常高纯度的1,4-CHDA。 该方法包括将含有所需氢化反应产物的溶液与蒸汽接触。 得到的产品可以包括具有优异的耐候性或物理性质的树脂或高纯度药物。 制备1,4-环己烷二羧酸的方法的特征在于两个连续的步骤。 第一步包括在耐酸容器中的钯催化剂存在下或在用耐酸材料层压制备1,4-环己烷二羧酸的容器中氢化包含对苯二甲酸的溶液。 第二步包括使第一步骤中获得的含有1,4-环己烷二羧酸的溶液与蒸汽接触,并提取移入蒸汽中的杂质。

    Raney catalyst, process for producing it and process for producing a sugar-alcohol using the same
    4.
    发明授权
    Raney catalyst, process for producing it and process for producing a sugar-alcohol using the same 失效
    阮内催化剂,其制备方法和使用其制备糖醇的方法

    公开(公告)号:US06414201B1

    公开(公告)日:2002-07-02

    申请号:US08743081

    申请日:1996-11-04

    IPC分类号: C07C3118

    摘要: To obtain a Raney catalyst for fixed bed permitting a continuous use with a high initial activity and to produce a high purity sugar-alcohol at a low cost using the same. For this object, sugar-alcohol is produced by: using the powder type Raney catalyst made by using for the hydrogenation under the hydrogen pressure a lump form Raney catalyst made by (i) the first step for melting nickel and aluminum, (ii) the second step for obtaining quenched lump alloy by quenching droplets of said melted mixture and (iii) the third step for classifying and activating said quenched lump alloy as it is or once it is broken, collecting said lump form Raney catalyst, crushing into powder and reactivating, and hydrogenating sugars under the hydrogen pressure.

    摘要翻译: 获得用于固定床的阮内催化剂,其允许以高初始活性连续使用,并且以相同的方式以低成本生产高纯度糖醇。为此目的,通过以下方式制备糖醇:使用粉末型阮内 通过在氢气压力下氢化制得的催化剂通过(i)用于熔化镍和铝的第一步骤制备的块形式的阮内催化剂,(ii)通过淬灭所述熔融混合物的液滴获得淬火的块状合金的第二步骤和 iii)第一步骤,将所述淬火的块状合金按原样分类并一次性破碎,收集所述块状阮内催化剂,粉碎并重新活化,并在氢气压力下氢化糖。

    Process for manufacturing crystalline maltitol and crystalline mixture
solid containing the same
    6.
    发明授权
    Process for manufacturing crystalline maltitol and crystalline mixture solid containing the same 失效
    制造结晶麦芽糖醇和含有它们的结晶混合物固体的方法

    公开(公告)号:US5932015A

    公开(公告)日:1999-08-03

    申请号:US888138

    申请日:1997-07-03

    CPC分类号: C07H15/04

    摘要: Provides an economical method for manufacturing high-value added crystalline maltitol and crystalline mixture solid containing this by means of a process wherein a syrup with a maltose content of 40 to 75% by weight in the solid component is subjected to catalytic hydrogenation, the sugar alcohol syrup is then subjected to chromatographic separation to produce a maltitol-containing syrup fraction with a high maltitol content in the solid component, and the maltitol-containing syrup fraction is then subjected to chromatographic separation.

    摘要翻译: 提供了一种经济的方法,用于通过以下方法制造高附加值的结晶麦芽糖醇和含有这种结晶混合物的固体组分的固体组分中麦芽糖含量为40-75%(重量)的糖浆进行催化氢化, 然后将糖浆进行色谱分离,以在固体组分中产生具有高麦芽糖醇含量的含麦芽糖醇的糖浆部分,然后对含麦芽糖醇的糖浆部分进行色谱分离。

    Crystalline mixture solid containing maltitol and a process for
preparing it
    7.
    发明授权
    Crystalline mixture solid containing maltitol and a process for preparing it 失效
    包含麦芽糖醇的结晶混合物固体及其制备方法

    公开(公告)号:US5583215A

    公开(公告)日:1996-12-10

    申请号:US280813

    申请日:1994-07-26

    IPC分类号: C07H15/04 C07H3/04

    CPC分类号: C07H15/04

    摘要: The crystalline mixture solid containing maltitol of the present invention has a crushed and relatively tight crystal structure which can be observed at 1,000 magnifications by a scanning electron microscope, an apparent specific gravity in the range of 0.650-0.750, an oil absorptivity of the powdered crystalline mixture solid containing maltitol having a particle size from 50 mesh to 20 mesh in the range of 7.0%-17%, in other words, is relatively heavy in apparent specific gravity and low in oil absorptivity, and the crystalline mixture solid containing maltitol is prepared by continuously supplying an aqueous solution of maltitol to an extruder provided with elongated cooling and kneading zones, cooling and kneading it in the presence of seed crystals to form a maltitol magma, and continuously extruded from a nozzle.

    摘要翻译: 含有本发明的麦芽糖醇的结晶混合物固体具有粉碎且相对紧密的晶体结构,其可以通过扫描电子显微镜观察到1,000倍放大,表观比重在0.650-0.750范围内,粉末结晶的吸水率 具有粒径为50目至20目的7.0%-17%范围内的麦芽糖醇混合物,表观比重相对较重,吸油率低,制备含麦芽糖醇的结晶混合物固体 通过连续地向具有细长的冷却和捏合区域的挤出机提供麦芽糖醇水溶液,在晶种存在下冷却和捏合以形成麦芽糖醇岩浆,并从喷嘴连续挤出。

    Crystalline mixture solid containing maltitol and a process for
preparing it
    8.
    发明授权
    Crystalline mixture solid containing maltitol and a process for preparing it 失效
    包含麦芽糖醇的结晶混合物固体及其制备方法

    公开(公告)号:US5354856A

    公开(公告)日:1994-10-11

    申请号:US836017

    申请日:1992-02-24

    IPC分类号: C07H15/04 C07H3/04

    CPC分类号: C07H15/04

    摘要: The crystalline mixture solid containing maltitol of the present invention has a crushed and relatively tight crystal structure which can be observed at 1,000 magnifications by a scanning electron microscope, an apparent specific gravity in the range of 0.650-0.750, an oil absorptivity of the powdered crystalline mixture solid containing maltitol having a particle size from 50 mesh to 20 mesh in the range of 7.0%-17%, in other words, is relatively heavy in apparent specific gravity and low in oil absorptivity, and the crystalline mixture solid containing maltitol is prepared by continuously supplying an aqueous solution of maltitol to an extruder provided with elongated cooling and kneading zones, cooling and kneading it in the presence of seed crystals to form a maltitol magma, and continuously extruded from a nozzle.

    摘要翻译: PCT No.PCT / JP91 / 00690 Sec。 一九九二年二月二十四日 102(e)日期1992年2月24日PCT提交1991年5月23日PCT公布。 公开号WO92 / 00309 日本1992年1月9日。本发明的含有麦芽糖醇的结晶混合物固体具有粉碎且相对紧密的晶体结构,其可以通过扫描电子显微镜观察到1000倍放大,表观比重在0.650-0.750的范围内, 包含粒径为50目至20目的麦芽糖醇的粉末状结晶混合物固体的含量在7.0%-17%范围内的油吸收性,换句话说,表观比重相对较重,吸油率低, 通过在具有细长的冷却和捏合区域的挤出机中连续供给麦芽糖醇水溶液,在晶种存在下冷却和捏合以形成麦芽糖醇岩浆,并从喷嘴连续挤出,制备含有麦芽糖醇的固体混合物。