Crystals of [S,S]-ethylenediamine-N,N′-disuccinic acid with high bulk density and method of obtaining the same
    1.
    发明授权
    Crystals of [S,S]-ethylenediamine-N,N′-disuccinic acid with high bulk density and method of obtaining the same 有权
    具有高堆积密度的[S,S] - 乙二胺-N,N'-二琥珀酸的晶体和获得相同的方法

    公开(公告)号:US06414189B1

    公开(公告)日:2002-07-02

    申请号:US09530964

    申请日:2000-05-18

    IPC分类号: C07C22900

    CPC分类号: C07C229/24 C07C227/42

    摘要: Crystals of [S,S]-ethylenediamine-N,N′-disuccinic acid which have a bulk density of 0.45 to 1.2 g/cm3, and a process for obtaining these crystals comprising the steps of adjusting an aqueous solution of an [S,S]-ethylenediamine-N,N′-disuccinic acid metal salt to a temperature of 40 to 80° C. and a pH of 1.9 to 4.5, and cooling the solution to a temperature below 40° C. over a period of 0.2 to 10 hours while supplying a mineral acid so as to maintain the pH at 1.9 to 4.5 to precipitate [S,S]-ethylenediamine-N,N′-disuccinic acid in a high yield.

    摘要翻译: 具有堆积密度为0.45〜1.2g / cm 3的[S,S] - 乙二胺-N,N'-二琥珀酸的晶体以及获得这些结晶的方法,包括以下步骤:将[S, S] - 乙二胺-N,N'-二琥珀酸金属盐,温度为40〜80℃,pH为1.9〜4.5,在0.2〜 10小时,同时供给无机酸,以保持pH为1.9〜4.5,以高收率沉淀出[S,S] - 乙二胺-N,N'-二琥珀酸。

    [S,S]-ethylenediamine-N,N′-disuccinic acid crystal with high bulk density and process for obtaining the same
    2.
    发明授权
    [S,S]-ethylenediamine-N,N′-disuccinic acid crystal with high bulk density and process for obtaining the same 有权
    具有高堆积密度的[S,S] - 乙二胺-N,N'-二琥珀酸晶体及其制备方法

    公开(公告)号:US06495716B2

    公开(公告)日:2002-12-17

    申请号:US10083536

    申请日:2002-02-27

    IPC分类号: C07C22900

    CPC分类号: C07C229/24 C07C227/42

    摘要: Crystals of [S,S]-ethylenediamine-N,N′-disuccinic acid which have a bulk density of 0.45 to 1.2 g/cm3, and a process for obtaining these crystals comprising the steps of adjusting an aqueous solution of an [S,S]-ethylenediamine-N,N′-disuccinic acid metal salt to a temperature of 40 to 80° C. and a pH of 1.9 to 4.5, and cooling the solution to a temperature below 40° C. over a period of 0.2 to 10 hours while supplying a mineral acid so as to maintain the pH at 1.9 to 4.5 to precipitate [S,S]-ethylenediamine-N,N′-disuccinic acid in a high yield.

    摘要翻译: 具有堆积密度为0.45〜1.2g / cm 3的[S,S] - 乙二胺-N,N'-二琥珀酸的晶体以及获得这些结晶的方法,包括以下步骤:将[S, S] - 乙二胺-N,N'-二琥珀酸金属盐,温度为40〜80℃,pH为1.9〜4.5,在0.2〜 10小时,同时供给无机酸,以保持pH为1.9〜4.5,以高收率沉淀出[S,S] - 乙二胺-N,N'-二琥珀酸。

    Process for producing high-quality acrylamide polymer with enzyme
    4.
    发明申请
    Process for producing high-quality acrylamide polymer with enzyme 审中-公开
    用酶生产高品质丙烯酰胺聚合物的方法

    公开(公告)号:US20070027294A1

    公开(公告)日:2007-02-01

    申请号:US10552464

    申请日:2004-04-02

    IPC分类号: C08G69/08

    CPC分类号: C12P13/02

    摘要: The object of the present invention is to obtain a highly soluble and colorless acrylamide polymer having a high molecular weight. A method for producing such acrylamide polymer involves comprises steps of: hydrating acrylonitrile containing oxazole at a concentration of 5 mg/kg or less and hydrogen cyanide at a concentration of 1 mg/kg or less by an enzymatic method to yield acrylamide; andt polymerizing monomers containing acrylamide.

    摘要翻译: 本发明的目的是获得具有高分子量的高度可溶性和无色的丙烯酰胺聚合物。 制备这种丙烯酰胺聚合物的方法包括以下步骤:通过酶法将含有浓度为5mg / kg或更低的含丙烯腈的恶唑和浓度为1mg / kg或更低的氰化氢水合,得到丙烯酰胺; 并将含有丙烯酰胺的单体聚合。

    METHOD FOR PRODUCING ACRYLAMIDE USING MICROBIAL CATALYST
    5.
    发明申请
    METHOD FOR PRODUCING ACRYLAMIDE USING MICROBIAL CATALYST 有权
    使用微生物催化剂生产丙烯酰胺的方法

    公开(公告)号:US20120276601A1

    公开(公告)日:2012-11-01

    申请号:US13518125

    申请日:2010-12-21

    IPC分类号: C12P13/02

    CPC分类号: C12P13/02 C12M29/06

    摘要: A method for producing acrylamide from acrylonitrile by a biocatalyst method, wherein both evaporation of acrylonitrile into a gas phase and damaging of a catalyst by stirring are prevented, is provided. In the present invention, the production of acrylamide from acrylonitrile by the biocatalyst method comprises feeding acrylonitrile into an aqueous medium comprising a microbial catalyst.

    摘要翻译: 通过生物催化剂法从丙烯腈制备丙烯酰胺的方法,其中防止丙烯腈蒸发到气相和通过搅拌而损坏催化剂。 在本发明中,通过生物催化剂法从丙烯腈制备丙烯酰胺包括将丙烯腈进料到包含微生物催化剂的水性介质中。

    Process for producing acrylamide using a microbial catalyst having been washed with aqueous acrylic acid solution
    6.
    发明授权
    Process for producing acrylamide using a microbial catalyst having been washed with aqueous acrylic acid solution 有权
    使用已用丙烯酸水溶液洗涤的微生物催化剂制备丙烯酰胺的方法

    公开(公告)号:US07205133B2

    公开(公告)日:2007-04-17

    申请号:US10472482

    申请日:2002-03-27

    IPC分类号: C12P13/02

    CPC分类号: C12P13/02

    摘要: Provided is a process for producing acrylamide with good storage stability and improved acrylamide polymer physical properties using a microbial catalyst. A microbial catalyst having catalytic activity to convert from acrylonitrile to acrylamide is washed with an aqueous acrylic acid solution, and then the washed microbial catalyst is used for the conversion reaction, so that the production of the above acrylamide is achieved.

    摘要翻译: 提供了使用微生物催化剂制备具有良好储存稳定性和改进的丙烯酰胺聚合物物理性能的丙烯酰胺的方法。 将具有从丙烯腈转化为丙烯酰胺的催化活性的微生物催化剂用丙烯酸水溶液洗涤,然后将洗涤的微生物催化剂用于转化反应,从而实现上述丙烯酰胺的生产。

    Method for producing acrylamide using microbial catalyst
    7.
    发明授权
    Method for producing acrylamide using microbial catalyst 有权
    使用微生物催化剂制备丙烯酰胺的方法

    公开(公告)号:US08980588B2

    公开(公告)日:2015-03-17

    申请号:US13518125

    申请日:2010-12-21

    IPC分类号: C12P13/02 C12M1/00

    CPC分类号: C12P13/02 C12M29/06

    摘要: A method for producing acrylamide from acrylonitrile by a biocatalyst method, wherein both evaporation of acrylonitrile into a gas phase and damaging of a catalyst by stirring are prevented, is provided. In the present invention, the production of acrylamide from acrylonitrile by the biocatalyst method comprises feeding acrylonitrile into an aqueous medium comprising a microbial catalyst.

    摘要翻译: 通过生物催化剂法从丙烯腈制备丙烯酰胺的方法,其中防止丙烯腈蒸发到气相和通过搅拌而损坏催化剂。 在本发明中,通过生物催化剂法从丙烯腈制备丙烯酰胺包括将丙烯腈进料到包含微生物催化剂的水性介质中。

    Method of manufacturing compound with biocatalyst by using controlled reaction temperature
    8.
    发明授权
    Method of manufacturing compound with biocatalyst by using controlled reaction temperature 有权
    使用受控反应温度制备具有生物催化剂的化合物的方法

    公开(公告)号:US07078199B2

    公开(公告)日:2006-07-18

    申请号:US10480810

    申请日:2002-06-20

    IPC分类号: C12P13/02

    CPC分类号: C12P13/02

    摘要: Provided is a method for producing a compound using a biocatalyst. In the method for continuously producing a compound using a biocatalyst in one or a plurality of reaction tanks, the downstream reaction temperature is set higher than the upstream reaction temperature of the flow of the catalyst in a reaction tank or between reaction tanks.

    摘要翻译: 提供使用生物催化剂制备化合物的方法。 在一个或多个反应槽中连续生产使用生物催化剂的化合物的方法中,下游反应温度设定为高于反应罐中或反应罐之间的催化剂流的上游反应温度。