1.
    发明专利
    未知

    公开(公告)号:BR9815036A

    公开(公告)日:2000-10-03

    申请号:BR9815036

    申请日:1998-11-24

    Applicant: BASF AG

    Abstract: A process for continuous extraction of polyamide particles using a recirculating extractant in a vertical extraction column that is divided into two zones comprises treating the polyamide with an aqueous extractant comprising from 40 to 95% by weight of epsi-caprolactam in a first zone at from 100 to 140° C., and then effecting an aftertreatment with water in a second zone. The caprolactam can then be extracted in a conventional manner. The process provides for economical production of polyamide having a low dimer content.

    2.
    发明专利
    未知

    公开(公告)号:ID24575A

    公开(公告)日:2000-07-27

    申请号:ID20000977

    申请日:1998-11-24

    Applicant: BASF AG

    Abstract: A process for continuous extraction of polyamide particles using a recirculating extractant in a vertical extraction column that is divided into two zones comprises treating the polyamide with an aqueous extractant comprising from 40 to 95% by weight of epsi-caprolactam in a first zone at from 100 to 140° C., and then effecting an aftertreatment with water in a second zone. The caprolactam can then be extracted in a conventional manner. The process provides for economical production of polyamide having a low dimer content.

    طريقة استخلاص متواصلة للبولي اميد POLYAMIDE

    公开(公告)号:SA702B1

    公开(公告)日:2006-04-18

    申请号:SA98190809

    申请日:1998-11-25

    Applicant: BASF AG

    Abstract: الملخص: يتعلقهذاالإختراعبطريقةللإستخلاصالمتواصللجزيئاتالبوليأميد polyamide بإستخداممستخلصمعادالدورانفيعمودإستخلاصرأسيوالذييقسمإلىمنطقتينويشملمعالجةالبوليأميد polyamide بمستخلصمائيمكونمن 40 إلى %95 بالوزنإيبسيلونكابرولاكتمفيمنطقةأولىعنددرجةحرارةمقدارهامن٠ ٠١ إلى 140 م, ثمالتأثيربمعالجةلاحقةمعالماءفيمنقطةثانية. وقديستخلصالكابرولاكتم caprolactam بعدذلكبصورةتقليدية. وتمدالطريقةبإنتاجإقتصاديمنالبوليأميد polyamide لهمحتوىدايمرمنخفض.

    CONTINUOUS POLYAMIDE EXTRACTION PROCESS

    公开(公告)号:SK6982000A3

    公开(公告)日:2000-11-07

    申请号:SK6982000

    申请日:1998-11-24

    Applicant: BASF AG

    Abstract: A process for continuous extraction of polyamide particles using a recirculating extractant in a vertical extraction column that is divided into two zones comprises treating the polyamide with an aqueous extractant comprising from 40 to 95% by weight of epsi-caprolactam in a first zone at from 100 to 140° C., and then effecting an aftertreatment with water in a second zone. The caprolactam can then be extracted in a conventional manner. The process provides for economical production of polyamide having a low dimer content.

    Continuous polyamide extraction process

    公开(公告)号:AU1757199A

    公开(公告)日:1999-06-15

    申请号:AU1757199

    申请日:1998-11-24

    Applicant: BASF AG

    Abstract: A process for continuous extraction of polyamide particles using a recirculating extractant in a vertical extraction column that is divided into two zones comprises treating the polyamide with an aqueous extractant comprising from 40 to 95% by weight of epsi-caprolactam in a first zone at from 100 to 140° C., and then effecting an aftertreatment with water in a second zone. The caprolactam can then be extracted in a conventional manner. The process provides for economical production of polyamide having a low dimer content.

    PROCEDIMIENTO PARA LA PREPARACION DE POLIETERPOLIOLES CON EMPLEO DE CATALIZADORES CRISTALINOS DE CIANUROS POLIMETALICOS.

    公开(公告)号:ES2244446T3

    公开(公告)日:2005-12-16

    申请号:ES00935078

    申请日:2000-05-19

    Applicant: BASF AG

    Abstract: Procedimiento para la obtención de poliéteralcoholes con un peso molecular desde 500 hasta 50.000 Dalton y una funcionalidad desde 1 hasta 8 mediante polimerización con apertura del anillo de óxidos de alquileno, caracterizado porque se emplea, a modo de catalizador, al menos un compuesto de cianuro multimetálico con una constitución cristalina, de la fórmula general (I) M1a[M2(CN)bAc]d * e M1fXg * h H2 O (I) en la que M1 significa, al menos, un ión metálico elegido del grupo que contiene Zn2+, Fe2+, Co3+, Ni2+, Mn2+, Co2+, Sn2+, Pb2+, Fe3+, Mo4+, Mo6+, Al3+, V5+, Sr2+, W4+, W6+, Cu2+, Cr2+, Cr3+, Cd2+, Hg2+, Pd2+, Pt2+, V2+, Mg2+, Ca2+, Ba2+ y mezclas de los mismos, M2 significa, al menos, un ión metálico, elegido del grupo constituido por Fe2+, Fe3+, Co3+, Cr3+, Mn2+, Mn3+, Rh3+, Ru2+, Ru3+, V4+, V5+, Co2+, Ir3+ y Cr2+ y siendo M2 diferente de M1, X significa, al menos, un anión elegido del grupo constituido por halogenuro, hidróxido, sulfato, carbonato, cianuro, tiocianato, isocianato, carboxilato, especialmente formiato, acetato, propionato, oxalato, nitrato, A significa, al menos, un anión elegido del grupo formado por halogenuro, hidróxido, sulfato, carbonato, cianuro, tiocianato, isocianato, carboxilato o nitrato, especialmente cianuro, pudiendo ser A igual que o diferente de X, y a, b, c y d significan números enteros o fraccionarios, que se eligen de tal manera que se garantice la neutralidad electrónica del compuesto de cianuro, siendo a, b y d mayor que cero y siendo c mayor o igual que cero, e significa un número entero o fraccionario mayor que cero, así como f y g significan números enteros o fraccionarios, que se eligen de tal manera que se garantice la neutralidad electrónica de M1fXg, h significa un número entero o fraccionario mayor o igual que cero, que se ha fabricado mediante el empleo de un ácido hexacianocobáltico.

Patent Agency Ranking