公开(公告)号：HU0100525A2

公开(公告)日：2001-06-28

申请号：HU0100525

申请日：1998-11-24

Applicant: BASF AG

Inventor： ERBES JOERG ,  LUDWIG ALFONS ,  PIPPER GUNTER

IPC: C08J3/12 ,  B01D11/02 ,  B29B9/16 ,  C08G69/00 ,  C08G69/04 ,  C08G69/16 ,  C08G69/46

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.

公开(公告)号：HU0202470A2

公开(公告)日：2002-11-28

申请号：HU0202470

申请日：2000-08-23

Applicant: BASF AG

Inventor： BAUER STEPHAN ,  BAUM EVA ,  ERBES JOERG ,  GROSCH GEORG HEINRICH ,  HARRE KATHRIN ,  JUNGE DIETER ,  LORENZ REINHARD ,  OSTROWSKI THOMAS

IPC: C08G65/10 ,  C08G18/48 ,  C08G65/26 ,  C08G65/28

Abstract: The invention relates to a method for producing polyether alcohols by catalytically attaching ethylene oxide and propylene oxide to H-functional starting substances. Said method is characterized in that at least one multimetal cyanide compound is used as a catalyst, and a block comprised of an alkylene oxide having at least three carbon atoms in the molecule is attached to the chain end.

公开(公告)号：AT227750T

公开(公告)日：2002-11-15

申请号：AT00926868

申请日：2000-04-11

Applicant: BASF AG

Inventor： LORENZ REINHARD ,  BAUER STEPHAN ,  JUNGE DIETER ,  BAUM EVA ,  HARRE KATHRIN ,  ERBES JOERG ,  OSTROWSKI THOMAS ,  GROSCH GEORG HEINRICH

IPC: C08G18/22 ,  C08G18/48 ,  C08G65/26 ,  C08K3/00 ,  C08G18/24

Abstract: In a process for producing polyurethanes by reacting at least one polyisocyanate with at least one compound containing at least two hydrogen atoms which are reactive toward isocyanate groups, the compound having at least two active hydrogen atoms which is used is at least one polyether alcohol prepared by addition of alkylene oxides onto H-functional initiator substances by means of multimetal cyanide catalysis and the reaction is carried out in the presence of at least one metal salt.

公开(公告)号：TR200001512T2

公开(公告)日：2002-08-21

申请号：TR200001512

申请日：1998-11-24

Applicant: BASF AG

Inventor： ERBES JOERG ,  LUDWIG ALFONS ,  PIPPER GUNTER

IPC: C08J3/12 ,  B01D11/02 ,  B29B9/16 ,  C08G69/00 ,  C08G69/04 ,  C08G69/16 ,  C08G69/46

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.

公开(公告)号：PL341685A1

公开(公告)日：2001-04-23

申请号：PL34168598

申请日：1998-11-24

Applicant: BASF AG

Inventor： ERBES JOERG ,  LUDWIG ALFONS ,  PIPPER GUNTER

IPC: C08J3/12 ,  B01D11/02 ,  B29B9/16 ,  C08G69/00 ,  C08G69/04 ,  C08G69/16 ,  C08G69/46

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.

公开(公告)号：DE19941242A1

公开(公告)日：2001-03-08

申请号：DE19941242

申请日：1999-08-31

Applicant: BASF AG

Inventor： HARRE KATHRIN ,  LORENZ REINHARD ,  GROSCH GEORG HEINRICH ,  ERBES JOERG ,  JUNGE DIETER ,  BAUER STEPHAN ,  BAUM EVA ,  OSTROWSKI THOMAS

IPC: C08G65/10 ,  C08G18/48 ,  C08G65/26 ,  C08G65/28 ,  C07B41/04 ,  C07C41/03 ,  C08G18/10 ,  C08G18/28

Abstract: The invention relates to a method for producing polyether alcohols by catalytically attaching ethylene oxide and propylene oxide to H-functional starting substances. Said method is characterized in that at least one multimetal cyanide compound is used as a catalyst, and a block comprised of an alkylene oxide having at least three carbon atoms in the molecule is attached to the chain end.

公开(公告)号：DE19926778A1

公开(公告)日：2000-12-14

申请号：DE19926778

申请日：1999-06-11

Applicant: BASF AG

Inventor： QUEISSER JOACHIM ,  GEPRAEGS MICHAEL ,  ERBES JOERG ,  BAUMERT MARTIN ,  MUELHAUPT ROLF

IPC: C08F28/00 ,  C08G75/22 ,  C08F228/00

Abstract: The invention relates to a method for the production of polysulphon with an aliphatic main chain, wherein a) sulphur dioxide and b) a vinyl aromatic compound and c) an unsaturated compound are reacted by means of d) radical polymerization in a mass or a solution e) at temperatures ranging from -80 DEG C to -150 DEG C, f) optionally using a radical chain initiator as a catalyst.

公开(公告)号：CZ20001931A3

公开(公告)日：2000-10-11

申请号：CZ20001931

申请日：1998-11-24

Applicant: BASF AG

Inventor： ERBES JOERG ,  LUDWIG ALFONS ,  PIPPER GUENTER

IPC: C08G69/16

公开(公告)号：DE19927131A1

公开(公告)日：1999-12-30

申请号：DE19927131

申请日：1999-06-15

Applicant: BASF AG

Inventor： ERBES JOERG ,  HOFMANN JUERGEN ,  WITTSTOCK KLAUS

IPC: C08C2/00 ,  C08F6/06 ,  C08F6/10 ,  C08F12/08

Abstract: The solvent of a polymer solution can be exchanged with styrene or styrene derivatives by bringing the styrene (derivative) vapor into contact with the polymer solution at a decreased temperature, and separation of the gaseous styrene/solvent-mixture obtained from the styrene-containing polymer solution.