公开(公告)号：ES2429363T3

公开(公告)日：2013-11-14

申请号：ES02753297

申请日：2002-08-23

Applicant: DSM IP ASSETS BV

Inventor： GROOT ZEVERT LOUISE ANNEMARIE ,  BINDELS JOSEPH JOHANNES GERARDUS ,  JOOSTEN RITA DIMPHINA ,  LEMMENS JOANNES ALBERTUS WILHELMUS ,  MOSTERT EELCO

IPC: C07D223/10 ,  C07D201/16 ,  C07D233/10

Abstract: Procedimiento para destilar producto alcalino de caprolactama a presión reducida, comprendiendo dichoproducto alcalino de caprolactama (i) caprolactama, (ii) impurezas orgánicas y (iii) una o más bases seleccionadasdel grupo que consiste en hidróxido de metal alcalino y aminocaproato de metal alcalino, caracterizado por que laalcalinidad del producto alcalino de caprolactama es menor que meq. por kg de caprolactama.

公开(公告)号：BR0212118A

公开(公告)日：2004-07-20

申请号：BR0212118

申请日：2002-08-23

Applicant: DSM IP ASSETS BV

Inventor： ZEVERT LOUISE ANNEMARIE GROOT ,  BINDELS JOSEPH JOHANNES GERARD ,  JOOSTEN RITA DIMPHINA ,  LEMMENS JOANNES ALBERTUS WILHE ,  MOSTERT EELCO

IPC: C07D223/10 ,  C07D201/16 ,  C07D233/10

Abstract: A continuous process is provided for recovering caprolactam from aqueous caprolactam product which includes (i) caprolactam, (ii) impurities, and (iii) water by (a) adding alkali hydroxide to the aqueous caprolactam product, in an amount of not more than 100 mmol alkali hydroxide per kg of caprolactam; (b) reacting at least part of the added alkali hydroxide to form alkali amino caproate, to obtain a caproate-enriched caprolactam product; and (c) distilling the caproate-enriched caprolactam product at reduced pressure.

公开(公告)号：PL370035A1

公开(公告)日：2005-05-16

申请号：PL37003502

申请日：2002-08-23

Applicant: DSM IP ASSETS BV

Inventor： GROOT ZEVERT LOUISE ANNEMARIE ,  BINDELS JOSEPH JOHANNES GERARD ,  JOOSTEN RITA DIMPHINA ,  LEMMENS JOANNES ALBERTUS WILHE ,  MOSTERT EELCO

IPC: C07D223/10 ,  C07D201/16 ,  C07D233/10

Abstract: A continuous process is provided for recovering caprolactam from aqueous caprolactam product which includes (i) caprolactam, (ii) impurities, and (iii) water by (a) adding alkali hydroxide to the aqueous caprolactam product, in an amount of not more than 100 mmol alkali hydroxide per kg of caprolactam; (b) reacting at least part of the added alkali hydroxide to form alkali amino caproate, to obtain a caproate-enriched caprolactam product; and (c) distilling the caproate-enriched caprolactam product at reduced pressure.

公开(公告)号：CZ2004296A3

公开(公告)日：2004-08-18

申请号：CZ2004296

申请日：2002-08-23

Applicant: DSM IP ASSETS BV

Inventor： GROOT ZEVERT LOUISE ANNEMARIE ,  BINDELS JOSEPH JOHANNES GERARD ,  JOOSTEN RITA DIMPHINA ,  LEMMENS JOHANNES ALBERTUS WILH ,  MOSTERT EELCO

IPC: C07D223/10 ,  C07D201/16 ,  C07D233/10

Abstract: A continuous process is provided for recovering caprolactam from aqueous caprolactam product which includes (i) caprolactam, (ii) impurities, and (iii) water by (a) adding alkali hydroxide to the aqueous caprolactam product, in an amount of not more than 100 mmol alkali hydroxide per kg of caprolactam; (b) reacting at least part of the added alkali hydroxide to form alkali amino caproate, to obtain a caproate-enriched caprolactam product; and (c) distilling the caproate-enriched caprolactam product at reduced pressure.

公开(公告)号：CZ20040296A3

公开(公告)日：2004-08-18

申请号：CZ20040296

申请日：2002-08-23

Applicant: DSM IP ASSETS BV

Inventor： GROOT ZEVERT LOUISE ANNEMARIE ,  BINDELS JOSEPH JOHANNES GERARD ,  JOOSTEN RITA DIMPHINA ,  LEMMENS JOHANNES ALBERTUS WILH ,  MOSTERT EELCO

IPC: C07D223/10 ,  C07D201/16 ,  C07D233/10

CPC classification number: C07D201/16 ,  C07D223/10