METHOD FOR PURIFYING N-VINYL-ε-CAPROLACTAM
    1.
    发明专利
    METHOD FOR PURIFYING N-VINYL-ε-CAPROLACTAM 审中-公开
    用于纯化N-乙烯基-ε-CAPROLACTAM的方法

    公开(公告)号:JP2002371064A

    公开(公告)日:2002-12-26

    申请号:JP2002157090

    申请日:2002-05-30

    CPC classification number: C07D223/10 C07D201/16

    Abstract: PROBLEM TO BE SOLVED: To provide a method for purifying N-vinyl-ε-caprolactam for producing an N-vinyl-ε-caprolactam hardly manifesting any sensibility for color changes, i.e., having high color stability higher than that of usual N-vinyl-ε-caprolactam obtained by distillation.
    SOLUTION: N-vinyl-ε-caprolactam to be purified having at least 95 mass % purity is changed to a molten liquid, which is partially crystallized and the crystal is separated from the mother liquid.
    COPYRIGHT: (C)2003,JPO

    Abstract translation: 要解决的问题:提供一种N-乙烯基-ε-己内酰胺的纯化方法,用于制造几乎不表现出颜色变化的任何敏感性的N-乙烯基-ε-己内酰胺,即具有比通常的N-乙烯基 通过蒸馏获得的ε-己内酰胺。 解决方案:将具有至少95质量%纯度的待纯化的N-乙烯基-ε-己内酰胺改变为部分结晶并将晶体与母液分离的熔融液。

    7.
    发明专利
    未知

    公开(公告)号:ES2178334T3

    公开(公告)日:2002-12-16

    申请号:ES99122885

    申请日:1999-11-18

    Applicant: BASF AG

    Inventor: PINKOS ROLF DR

    Abstract: A carboxylic acid is used in a process to hydrogenate polyene compounds to monoenes using a ruthenium catalyst. A process to hydrogenate a polyene to a monoene uses a ruthenium catalyst in the presence of a carboxylic acid.

    9.
    发明专利
    未知

    公开(公告)号:DE19725533A1

    公开(公告)日:1998-12-24

    申请号:DE19725533

    申请日:1997-06-17

    Applicant: BASF AG

    Abstract: The invention relates to an advantageous method for industrial production of sought-after odoriferous musk root substances 2-cyclododecyl-propanol by reacting cyclododecene in the presence of catalytic amounts of a radical initiator with an excess of propionic acid or propionic acid derivative and subsequent catalytic hydrogenation of the formed 2-cyclododecyl propionic acid or the corresponding 2-cyclododecyl propionic acid derivatives.

    10.
    发明专利
    未知

    公开(公告)号:DE59308777D1

    公开(公告)日:1998-08-20

    申请号:DE59308777

    申请日:1993-12-08

    Applicant: BASF AG

    Abstract: Process for the preparation of 5-membered heterocycles of the general formula I in which R is methyl or hydroxyethyl, R , R , R , R and R are hydrogen, C1- to C12-alkyl, C 2- to C12-alkenyl, aryl, C3- to C8-cycloalkyl, C1- to C12-alkoxy, halogen, C2- to C20-alkoxycarbonylalkyl, C2- to C20-alkylcarbonyloxy, formyl, C2- to C20-formylalkyl, benzoyl, -CH(OR )(OR ), or R and R together are a C2- to C7-alkylene chain which is optionally monosubstituted to pentasubstituted by R or a =CH-CH=CH-CH= unit which is optionally monosubstituted to tetrasubstituted by R , and X is oxygen or N-R , by reacting 5-membered heterocycles of the general formula II in which R , R , R , R , R and X have the abovementioned meaning and Y is hydrogen, acetyl or C2- to C20-alkoxycarbonyl, with dimethyl carbonate or ethylene carbonate in the presence of a nitrogen-containing base at temperatures from 50 to 300@C and pressures from 0.01 to 50 bar.

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