-
公开(公告)号:BR9703406A
公开(公告)日:1999-01-05
申请号:BR9703406
申请日:1997-05-27
Applicant: BASF AG
Inventor: AICHINGER HEINRICH , NESTLER GERHARD , HERBST HOLGER , HEIMANN JOHN C , MCGLONE NICOLE E , DARLINGTON JERRY W , DONATH CALVIN F
IPC: B01J27/04 , B01J27/16 , C07B61/00 , C07C27/02 , C07C57/04 , C07C67/03 , C07C67/08 , C07C67/54 , C07C67/60 , C07C69/54
Abstract: Esterifying (meth)acrylic acid with an alkanol in the presence of an esterification catalyst is claimed, in which unreacted starting materials and the (meth)acrylic acid ester are sepd. by distillation to leave behind an oxyester sump prod. Either (a) (meth)acrylic acid is added directly to the sump prod. and then the oxyester sump is cleaved at high temp. by an acid catalyst other than (meth)acrylic acid, or (b) the oxyester is sepd. from the sump prod. by distillation and then cleaved in the same way as in step (a).
-
公开(公告)号:MX9606244A
公开(公告)日:1998-04-30
申请号:MX9606244
申请日:1996-12-09
Applicant: BASF AG
Inventor: GLONE NICOLE E MC , AICHINGER HEINRICH , HERBST HOLGER , NESTLER GERHARD , DARLINGTON JERRY W , HEIMANN JOHN C , DONATH CALVIN F
IPC: B01J27/04 , B01J27/16 , C07B61/00 , C07C27/02 , C07C57/04 , C07C67/03 , C07C67/08 , C07C67/54 , C07C67/60 , C07C69/54
Abstract: En un proceso para esterificar ácido (met)acrílico con un alcanol en presencia de un catalizador de esterificacion en el que los compuestos de partida no reaccionados y el éster (met)acrílico formado se separan mediante destilacion y se obtiene un producto inferior que contiene ésteres oxi, el producto inferior se separa y ya sea el producto inferior se mezcla directamente con ácido (met)acrílico y los ésteres oxi presentes en el producto inferior y luego se disocia a una temperatura elevada en presencia de catalizadores ácidos diferentes al ácido (met)acrílico, o los ésteres oxi primero se separan mediante destilacion del producto inferior, el destilado se mezcla con ácido (met)acrílico y luego se disocia a una temperatura elevada en presencia de catalizadores ácidos diferentes del ácido (met)acrílico.
-
公开(公告)号:CZ9603691A3
公开(公告)日:1997-06-11
申请号:CZ369196
申请日:1996-12-16
Applicant: BASF AG
Inventor: NESTLER GERHARD , AICHINGER HEINRICH , HERBST HOLGER , MCGLONE NICOLE E , DARLINGTON JERRY W , DONATH CALVIN F , HEIMANN JOHN C
-
公开(公告)号:DE19547459A1
公开(公告)日:1996-07-25
申请号:DE19547459
申请日:1995-12-19
Applicant: BASF AG
Inventor: NESTLER GERHARD , AICHINGER HEINRICH , HERBST HOLGER , MCGLONE NICOLE E , DARLINGTON JERRY W , DONATH CALVIN F , HEIMANN JOHN C
IPC: B01J27/04 , B01J27/16 , C07B61/00 , C07C27/02 , C07C57/04 , C07C67/03 , C07C67/08 , C07C67/54 , C07C67/60 , C07C69/54 , C07C67/48 , C07C31/12 , C07C31/125
Abstract: Esterifying (meth)acrylic acid with an alkanol in the presence of an esterification catalyst is claimed, in which unreacted starting materials and the (meth)acrylic acid ester are sepd. by distillation to leave behind an oxyester sump prod. Either (a) (meth)acrylic acid is added directly to the sump prod. and then the oxyester sump is cleaved at high temp. by an acid catalyst other than (meth)acrylic acid, or (b) the oxyester is sepd. from the sump prod. by distillation and then cleaved in the same way as in step (a).
-
-
-