Method of depolymerizing polyamide and production method for monomer of polyamide
    22.
    发明专利
    Method of depolymerizing polyamide and production method for monomer of polyamide 有权
    聚酰胺的聚合方法和聚酰胺单体的制备方法

    公开(公告)号:JP2007169256A

    公开(公告)日:2007-07-05

    申请号:JP2006053153

    申请日:2006-02-28

    CPC classification number: C07D201/12 Y02P20/544

    Abstract: PROBLEM TO BE SOLVED: To provide a method of depolymerizing a polyamide, whereby depolymerization of a polyamide is carried out without causing corrosion in a metallic apparatus; and to provide a production method for a monomer of a polyamide. SOLUTION: The method of depolymerizing a polyamide and the production method for a monomer of a polyamide are carried out through depolymerization of a polyamide by subjecting a ≥2C alcohol to act on a polyamide. The alcohol is a secondary or tertiary alcohol, or a ≥4C alcohol, being subjected to act in the state of supercritical. COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:提供聚酰胺解聚的方法,由此进行聚酰胺的解聚而不会在金属装置中引起腐蚀; 并提供聚酰胺单体的制造方法。 解决方案:聚酰胺的解聚方法和聚酰胺单体的制造方法通过使≥2℃的醇进行聚酰胺的聚酰胺的解聚来进行。 酒精是二级或三级酒精,或≥4C酒精,超临界状态。 版权所有(C)2007,JPO&INPIT

    A PROCESS FOR THE PURIFICATION OF CAPROLACTAM OBTAINED FROM THE DEPOLYMERIZATION OF POLYAMIDE-CONTAINING CARPET
    23.
    发明申请
    A PROCESS FOR THE PURIFICATION OF CAPROLACTAM OBTAINED FROM THE DEPOLYMERIZATION OF POLYAMIDE-CONTAINING CARPET 审中-公开
    一种从含聚酰胺地毯的分离纯化得到的缩水甘油醚的方法

    公开(公告)号:WO99011616A1

    公开(公告)日:1999-03-11

    申请号:PCT/US1998/018265

    申请日:1998-09-02

    CPC classification number: C07D201/12

    Abstract: The present invention provides a process for the preparation of purified caprolactam comprising the steps of: (a) depolymerizing polyamide-containing carpet in the presence of steam to obtain crude caprolactam and steam; (b) removing substantially all of said water from said crude caprolactam and steam; (c) distilling the resulting concentrated crude caprolactam at a pressure of less than about 8 mmHg and a temperature from about 110 DEG C to about 145 DEG C so as to form overheads and bottoms of the caprolactam; and (d) crystallizing the caprolactam overheads to obtain caprolactam crystals and mother liquor. The resulting purified caprolactam may then be used to make polycaprolactam which may then be used in engineered materials or spun into fiber.

    Abstract translation: 本发明提供了制备纯己内酰胺的方法,包括以下步骤:(a)在蒸汽存在下解聚含聚酰胺的地毯以获得粗己内酰胺和蒸汽; (b)从所述粗己内酰胺和蒸汽中大部分除去所述水; (c)在小于约8mmHg的压力和约110℃至约145℃的温度下蒸馏所得浓缩的粗己内酰胺,以形成己内酰胺的塔顶馏出物和塔底物; 和(d)结晶己内酰胺塔顶馏出物以获得己内酰胺晶体和母液。 然后将所得纯化的己内酰胺用于制备聚己内酰胺,然后将其用于工程化材料或纺成纤维。

    PROCESS FOR PREPARING CAPROLACTAM FROM 6-AMINOCAPRONITRILE
    24.
    发明申请
    PROCESS FOR PREPARING CAPROLACTAM FROM 6-AMINOCAPRONITRILE 审中-公开
    用于生产己内酰胺OFF 6-氨基己腈

    公开(公告)号:WO1998003481A1

    公开(公告)日:1998-01-29

    申请号:PCT/EP1997003569

    申请日:1997-07-07

    CPC classification number: C07D201/12 C07D201/08

    Abstract: The invention concerns the preparation of caprolactam by cyclizing 6-aminocapronitrile in the presence of water at high temperature and optionally of a catalyst and a solvent by: a) separating from the reaction yield ("reaction yield I") of the cyclizing process caprolactam and all the components boiling higher than caprolactam ("high boilers"); b) treating the high boilers from step a) with phosphoric acid and/or polyphosphoric acid at a temperature ranging from 200 to 350 DEG C, obtaining reaction yield II; and c) separating the caprolactam resulting from reaction yield II of step b) and optionally 6-aminocapronitrile from unreacted "high boilers" and the acid used.

    Abstract translation: 从环化己内酰胺的反应流出物(“反应流出物I”)和所有高于己内酰胺沸点组分(“高沸物制备由6-氨基己腈的环化的己内酰胺在水中在高温下存在,并且如果需要的话,催化剂和溶剂,通过) “)被分离; B)阶段的高沸点)与磷酸和/或聚磷酸在200〜350℃下处理,得到的反应流出物II的范围内的温度,和c)从反应流出物阶段b II)形成己内酰胺和从任何6-氨基己腈 未转化的高沸点化合物和使用的酸被分离。

    PROCESS FOR THE PREPARATION OF epsilon -CAPROLACTAM
    25.
    发明申请
    PROCESS FOR THE PREPARATION OF epsilon -CAPROLACTAM 审中-公开
    用于制备ε-吡咯烷酮的方法

    公开(公告)号:WO01056984A1

    公开(公告)日:2001-08-09

    申请号:PCT/NL2001/000081

    申请日:2001-02-02

    CPC classification number: C07D201/08 C07D201/12

    Abstract: A process for the preparation of epsilon -caprolactam starting from 6-aminocaproic acid, 6-aminocaproamide, 6-aminocaproic ester, 6-aminocapronitrile, oligomers or polymers of these compounds or mixtures comprising at least two of these compounds, which process is performed in the presence of N-(5-carboxypentyl)- epsilon -caprolactam and/or derivative thereof in an amount of less than 50 wt.% and more than 0.1 wt.% (based on the total reaction mixture).

    Abstract translation: 从6-氨基己酸,6-氨基己酰胺,6-氨基己酸酯,6-氨基己腈,这些化合物的低聚物或聚合物或包含这些化合物中的至少两种的混合物制备ε-己内酰胺的方法,该方法在 N-(5-羧戊基) - ε-己内酰胺和/或其衍生物的存在量小于50重量%且大于0.1重量%(基于总反应混合物)。

    A PROCESS FOR RECOVERING CAPROLACTAM AND STEAM
    26.
    发明申请
    A PROCESS FOR RECOVERING CAPROLACTAM AND STEAM 审中-公开
    一种恢复盖帽和蒸汽的方法

    公开(公告)号:WO00050394A3

    公开(公告)日:2000-12-07

    申请号:PCT/NL2000/000080

    申请日:2000-02-09

    CPC classification number: C07D201/12 C07D201/16

    Abstract: The present invention relates to a process for purifying an impure stream of caprolactam while recovering not only pure caprolactam but also medium-to-high pressure steam. Preferably, the stream of impure or crude caprolactam which comprises at a minimum a substantial portion of water, is obtained from depolymerization of a polyamide-containing composition. The resulting purified caprolactam will have a purity greater than 90 weight percent and the recovered steam will have a temperature sufficiently high to provide a driving force for use with other equipment, for instance, heat exchange equipment.

    Abstract translation: 本发明涉及纯化己内酰胺不纯物流的方法,同时不仅回收纯己内酰胺,而且回收中至高压蒸汽。 优选地,含有至少大部分水的不纯或粗己内酰胺流是由含聚酰胺的组合物的解聚获得的。 得到的纯化的己内酰胺将具有大于90重量%的纯度,并且所回收的蒸汽将具有足够高的温度以提供与其它设备(例如热交换设备)一起使用的驱动力。

    용융된폴리카프로락탐의가수분해절단에의한카프로락탐의제조방법

    公开(公告)号:KR100365454B1

    公开(公告)日:2003-05-17

    申请号:KR1019970703912

    申请日:1995-12-01

    CPC classification number: C07D201/12

    Abstract: Caprolactam is obtained from caprolactam-containing polymers in the presence of superheated water by bringing polymers which contain the repeating unit -[-N(H)-(CH2)5-C(O)-]- or mixtures consisting essentially of -from 40 to 99.9% by weight of a polymer containing the repeat- - ing unit -[-N(H)-(CH2)5-C(O)-]-, -from 0.01 to 50% by weight of additives selected from the group - consisting of inorganic fillers, organic and - inorganic pigments and dyes, -from 0 to 10% by weight of organic and/or inorganic - additives, -from 0 to 40% by weight of non-polyamide-containing - polymers and -from 0 to 60% by weight of polyamides, with the exception of - polycaprolactam and copolyamides prepared - from caprolactam, - into contact with superheated water at from 280 DEG to 320 DEG C. and from 7.5 to 15 MPa and a weight ratio of water to polymer containing the repeating unit -[-N(H)-(CH2)5-C(O)-]- of from 5:1 to 13:1 and in a reaction time of less than 3 hours, with the proviso that the reaction mixture, consisting essentially of water and the polymer used or the mixture used, contains no gaseous phase under the conditions of the hydrolysis.

    Abstract translation: 己内酰胺由过热水存在下的含己内酰胺聚合物通过将含有重复单元 - [ - N(H) - (CH2)5-C(O) - ] - 的聚合物或基本上由40 至99.9重量%的包含重复单元 - [ - N(H) - (CH 2)5 -C(O) - ] - 的聚合物,-0.01至50重量%的选自 - 由无机填料,有机和无机颜料和染料组成, - 0-10重量%的有机和/或无机添加剂,-0-40重量%的不含聚酰胺的聚合物和 - 除了由己内酰胺制备的聚己内酰胺和共聚酰胺以外,0至60重量%的聚酰胺与280至320℃和7.5至15MPa的过热水接触,并且水与 包含5:1至13:1的重复单元 - [ - N(H) - (CH 2)5 -C(O) - ] - 的聚合物,反应时间小于3小时,条件是 反应mi 基本上由水组成,所用聚合物或所用混合物在水解条件下不含气相。

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