Process for the preparation of Gamma-Butyrolactone and the use thereof
    1.
    发明授权
    Process for the preparation of Gamma-Butyrolactone and the use thereof 失效
    制备γ-丁内酯的方法及其用途

    公开(公告)号:US6075153A

    公开(公告)日:2000-06-13

    申请号:US51542

    申请日:1998-04-13

    CPC分类号: C07D207/267 C07D315/00

    摘要: A process for manufacturing gamma-butyrolactone by the catalytic hydrogenation of maleic anhydride, succinic anhydride or their acids in the vapor phase in the presence of catalysts based on copper oxide and aluminum oxide in reduced form is described. The process is characterized in that a catalyst is employed to conduct the reaction which is formed on the basis of 50 to 95% by weight copper oxide, 3 to 30% by weight aluminum oxide and 0 to 25% by weight of a binder. Preferably the catalyst is formed on the basis of 83.5 to 85.5% by weight copper oxide, 9 to 11% by weight aluminum oxide, and 4.5 to 6.5% by weight graphite. The reaction mixture obtained can be used directly without separating off the water, e.g. for manufacturing N-methylpyrrolidone.

    摘要翻译: PCT No.PCT / EP96 / 05486 Sec。 371日期:1998年4月13日 102(e)1998年4月13日PCT 1996年12月7日PCT PCT。 公开号WO97 / 24346 日期1997年7月10日描述了一种在还原形式的基于氧化铜和氧化铝的催化剂存在下,通过马来酸酐,琥珀酸酐或其酸在催化氢化制备γ-丁内酯的方法。 该方法的特征在于,使用催化剂进行基于50〜95重量%的氧化铜,3〜30重量%的氧化铝和0〜25重量%的粘合剂形成的反应。 优选地,基于83.5至85.5重量%的氧化铜,9至11重量%的氧化铝和4.5至6.5重量%的石墨形成催化剂。 获得的反应混合物可以直接使用而不分离水,例如水。 用于制造N-甲基吡咯烷酮。

    Process for manufacturing 2-pyrrolidone or N-alkylpyrrolidones
    2.
    发明授权
    Process for manufacturing 2-pyrrolidone or N-alkylpyrrolidones 失效
    制备2-吡咯烷酮或N-烷基吡咯烷酮的方法

    公开(公告)号:US6008375A

    公开(公告)日:1999-12-28

    申请号:US272124

    申请日:1999-03-19

    CPC分类号: C07D207/267 C07D315/00

    摘要: A process for manufacturing gamma-butyrolactone by the catalytic hydrogenation of maleic anhydride, succinic anhydride or their acids in the vapor phase in the presence of catalysts based on copper oxide and aluminum oxide in reduced form is described. The process is characterized in that a catalyst is employed to conduct the reaction which is formed on the basis of 50 to 95 % by weight copper oxide, 3 to 30 % by weight aluminum oxide and 0 to 25 % by weight of a binder. Preferably the catalyst is formed on the basis of 83.5 to 85.5 % by weight copper oxide, 9 to 11 % by weight aluminum oxide, and 4.5 to 6.5 % by weight graphite. The reaction mixture obtained can be used directly without separating off the water, e.g. for manufacturing N-methylpyrrolidone.

    摘要翻译: 在基于氧化铜和还原形式的氧化铝的催化剂存在下,通过马来酸酐,琥珀酸酐或其酸在气相中的催化氢化来制备γ-丁内酯的方法。 该方法的特征在于,使用催化剂进行基于50〜95重量%的氧化铜,3〜30重量%的氧化铝和0〜25重量%的粘合剂形成的反应。 优选地,基于83.5至85.5重量%的氧化铜,9至11重量%的氧化铝和4.5至6.5重量%的石墨形成催化剂。 获得的反应混合物可以直接使用而不分离水,例如水。 用于制造N-甲基吡咯烷酮。

    Free-flowing pellets based on cellulose textile fibers and a method for the production thereof
    3.
    发明授权
    Free-flowing pellets based on cellulose textile fibers and a method for the production thereof 有权
    基于纤维素纺织纤维的自由流动的颗粒及其生产方法

    公开(公告)号:US08419991B2

    公开(公告)日:2013-04-16

    申请号:US11663301

    申请日:2005-09-16

    IPC分类号: B29B9/14

    摘要: A process for manufacturing free-flowing pellets based on cellulosic spun fibers. The process includes a) wetting at least one cellulosic spun-fiber strand with a preferably aqueous dispersion of a polymer and/or an oligomer for the purpose of applying sizing, b) drying the at least one spun-fiber strand, and c) comminuting the at least one spun-fiber strand into pellets. The free-flowing pellets are made from at least one comminuted spun-fiber strand having sizing made from a polymer and/or an oligomer. A fiber-reinforced thermoplastic includes finely distributed free-flowing pellets for manufacturing fiber-reinforced performs.

    摘要翻译: 用于制造基于纤维素纺丝纤维的自由流动颗粒的方法。 该方法包括:a)为了施加上浆,润湿至少一种纤维素纺丝纤维股,优选聚合物和/或低聚物的水分散体,b)干燥至少一条纺丝纤维线,和c)粉碎 所述至少一条纺丝纤维束变成颗粒。 自由流动的颗粒由至少一个具有由聚合物和/或低聚物制成的施胶的粉碎纺丝纤维线制成。 纤维增强热塑性材料包括精细分布的自由流动的颗粒,用于制造纤维增强的表面。

    Free-Flowing Pellets Based on Cellulose Textile Fibers and a Method for the Production Thereof
    5.
    发明申请
    Free-Flowing Pellets Based on Cellulose Textile Fibers and a Method for the Production Thereof 有权
    基于纤维素纺织纤维的自由流动颗粒及其生产方法

    公开(公告)号:US20080020205A1

    公开(公告)日:2008-01-24

    申请号:US11663301

    申请日:2005-09-16

    IPC分类号: B29B9/14

    摘要: A process for manufacturing free-flowing pellets based on cellulosic spun fibers. The process includes a) wetting at least one cellulosic spun-fiber strand with a preferably aqueous dispersion of a polymer and/or an oligomer for the purpose of applying sizing, b) drying the at least one spun-fiber strand, and c) comminuting the at least one spun-fiber strand into pellets. The free-flowing pellets are made from at least one comminuted spun-fiber strand having sizing made from a polymer and/or an oligomer. A fiber-reinforced thermoplastic includes finely distributed free-flowing pellets for manufacturing fiber-reinforced performs.

    摘要翻译: 用于制造基于纤维素纺丝纤维的自由流动颗粒的方法。 该方法包括:a)为了施加上浆,润湿至少一种纤维素纺丝纤维股,优选聚合物和/或低聚物的水分散体,b)干燥至少一条纺丝纤维线,和c)粉碎 所述至少一条纺丝纤维束变成颗粒。 自由流动的颗粒由至少一个具有由聚合物和/或低聚物制成的施胶的粉碎纺丝纤维线制成。 纤维增强热塑性材料包括精细分布的自由流动的颗粒,用于制造纤维增强的表面。