Improvements in the production of omega-aminododecane acidlactam, and a new intermediate compound therein

    公开(公告)号:GB873257A

    公开(公告)日:1961-07-19

    申请号:GB1832959

    申请日:1959-05-29

    Applicant: BASF AG

    Abstract: o -Aminododecane acid lactam is obtained by treating cyclododecane in dissolved form at a temperature of -30 to +40 DEG C. under the action of light with hydrogen chloride and a nitrosating agent, separating the resulting cyclododecanone oxime hydrochloride, treating it at 80-150 DEG C. with an acid or acid chloride known for the Beckmann rearrangement and separating the o -aminododecane acid lactam by introducing the resulting rearrangement mixture into water. Cyclododecanone oxime hydrochloride is claimed per se; it may be obtained in solid or liquid forms. Specified nitrosating agents are nitrosyl chloride, which may be prepared in situ, e.g. from an alkyl nitrite and hydrogen chloride, and a mixture of chlorine and nitrogen monoxide. The initial cyclododecane solution preferably contains 0.5 to 5% by weight of by-products formed by the nitrosation of cyclododecane. Specified Beckmann rearrangement agents are sulphuric acid, oleum, chlorsulphonic acid, phosphorus pentachloride and benzene-sulphonyl chloride. o -aminododecane acid lactam, e.g. 1-10% based on sulphuric acid, is preferably added to the mixture to be subjected to rearrangement. The cyclododecanone oxime hydrochloride may be converted to the free oxime by digestion with water or by precipitation from an alcoholic solution of the hydrochloride by means of water. o -aminododecane acid lactam may be used in polyamide preparation; it may be converted to o -aminododecane carboxylic acid or its hydrochlorides by boiling with concentrated HCI.

    UN PROCEDIMIENTO PARA PREPARAR UNA OXIMA DE UNA ACETONA CICLICA

    公开(公告)号:ES220736A1

    公开(公告)日:1955-07-01

    申请号:ES220736

    申请日:1955-03-17

    Applicant: OLIN MATHIESON

    Abstract: Un procedimiento para la preparación de una oxima de una cetona cíclica, que comprende hacer reaccionar en un reactor un hidrocarburo cíclico hidroaromático, con un agente nitrosilador en presencia de luz ultravioleta, caracterizado por efectuar dicha reacción en presencia de un ácido carboxílico alifático, un derivadonucleado de un ácido carboxílico alifático, o un derivado fluorado de un ácido carboxílico alifático, conteniendo dicho ácido carboxílico alifático desde uno hasta aproximadamente cuatro átomos de carbono en una cantidad eficaz para inhibir la formación de un recubrimiento resinoso sobre las paredes del reactor.

    ε-카프로락탐의 제조 방법
    114.
    发明授权
    ε-카프로락탐의 제조 방법 有权
    生产β-碳青霉烯的方法

    公开(公告)号:KR101100054B1

    公开(公告)日:2011-12-29

    申请号:KR1020040051544

    申请日:2004-07-02

    CPC classification number: C07D201/04 Y02P20/52

    Abstract: ε-카프로락탐은 고체 촉매 입자를 옥심 포함 가스와 접촉시키기 위해 촉매 층을 유동화하면서 가스 분산판의 다수의 구멍 (평균 직경: 약 3 mm 이하) 을 통해 시클로헥사논 옥심 포함 가스를 고체 촉매 입자의 층에 도입하는 단계를 포함하는 방법으로 얻는다.
    상기의 제조 방법으로, 시클로헥사논 옥심 포함 원료 가스로부터 시클헥사논 옥심의 고전화율 및 ε-카프로락탐에 대한 고선택율로 ε-카프로락탐을 제조할 수 있다.
    ε-카프로락탐

    향상된 내스크래치성 및 내흠발생성을 갖는 낮은 휘발성유기 화합물 함량의 코팅 조성물
    115.
    发明公开

    公开(公告)号:KR1020050115918A

    公开(公告)日:2005-12-08

    申请号:KR1020057017424

    申请日:2004-03-18

    CPC classification number: C09D143/00 Y10T428/31663

    Abstract: A curable coating composition, and process of application thereof, particularly useful as a clearcoating applied over a pigmented basecoat that has significantly decreased VOC and improved scratch, etch, and mar resistance, is provided in accordance with the present invention, which is contains a silane functional oligomeric or polymeric material comprising carbamate groups and a crosslinking component comprising groups that are reactive with the carbamate groups.

    Abstract translation: 根据本发明,提供了一种可固化涂料组合物及其应用方法,其特别可用作涂覆在着色底漆上的透明涂层,其具有显着降低的VOC和改善的划痕,蚀刻和耐擦伤性,其包含硅烷 包含氨基甲酸酯基团的功能性低聚物或聚合物材料和包含与氨基甲酸酯基团反应的基团的交联组分。

    Improved scratch and mar resistant low VOC coating composition

    公开(公告)号:AU2004221851A1

    公开(公告)日:2004-09-30

    申请号:AU2004221851

    申请日:2004-03-18

    Applicant: DU PONT

    Abstract: A curable coating composition, and process of application thereof, particularly useful as a clearcoating applied over a pigmented basecoat that has significantly decreased VOC and improved scratch, etch, and mar resistance, is provided in accordance with the present invention, which is contains a silane functional oligomeric or polymeric material comprising carbamate groups and a crosslinking component comprising groups that are reactive with the carbamate groups.

    118.
    发明专利
    未知

    公开(公告)号:ES2180249T3

    公开(公告)日:2003-02-01

    申请号:ES99125632

    申请日:1999-12-22

    Abstract: An improvement in the conventional process for the production of caprolactam. The process involves: (a) reacting air with ammonia gas in an ammonia conversion zone to produce nitric oxide; (b) oxidizing a portion of the nitric oxide to nitrogen dioxide to produce an NOx-rich process gas stream; (c) reacting the NOx-rich stream with ammonium carbonate in a nitriting zone to produce ammonium nitrite; (d) reducing the ammonium nitrite to hydroxylamine diammonium sulfate; (e) hydrolyzing the hydroxylamine diammonium sulfate to hydroxylamine sulfate; (f) oximating the hydroxylamine sulfate with cyclohexanone to produce cyclohexanone oxime; and (g) converting the cyclohexanone oxime to caprolactam. The process is improved by adding supplemental oxygen downstream of the ammonia conversion zone to increase the quantity and rate of formation of nitrogen dioxide in the NOx-rich process gas stream.

    PROCESS FOR PREPARING CAPROLACTAM
    119.
    发明专利

    公开(公告)号:RU2125556C1

    公开(公告)日:1999-01-27

    申请号:RU95116368

    申请日:1995-09-26

    Abstract: FIELD: organic chemistry. SUBSTANCE: claimed process comprises preparing caprolactam by cyclohexanone oxime Beckman regrouping with oleum in the presence of aliphatic and/or cycloaliphatic C 1 -C 20 carboxylic acid, preferably C 1 -C 10 acid, and more preferably cyclohexanecarboxylic acid, at 20-150 C. Cyclohexanecarboxylic acid and oleum are components of acidic reaction mixture resulting from reaction of lactamization of cyclohexanecarboxylic acid with nitrosonium hydrosulphide. EFFECT: increased yield of the final product. 8 cl

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