公开(公告)号：DE19547485A1

公开(公告)日：1996-05-09

申请号：DE19547485

申请日：1995-12-19

Applicant: BASF AG

Inventor： NESTLER GERHARD ,  AICHINGER HEIRICH ,  HERBST HOLGER ,  MCGLONE NICOLE E ,  DARLINGTON JERRY W ,  DONATH CALVIN F ,  HEIMANN JOHN C

IPC: B01J27/16 ,  B01J31/02 ,  C07B61/00 ,  C07C27/02 ,  C07C57/04 ,  C07C67/03 ,  C07C67/08 ,  C07C67/54 ,  C07C67/60 ,  C07C69/54 ,  C07C67/48 ,  C07C31/12 ,  C07C31/125

Abstract: A process for esterifying (meth)acrylic acid with an alkanol in the presence of esterification catalyst comprises: (i) sepg. unreacted starting materials and the ester obtd. by distn., and (ii) producing a bottom prod. contg. an oxy-ester. The bottom prod. is isolated and processed by: (a) direct treatment with oligomeric (meth)acrylic acid (I) followed by heating in the presence of acid catalysts other than (I) to effect cleavage of the oxy-ester, or (b) sepn. of the oxy-ester by distn., followed by treatment of the distillate with (I) and thermal cleavage as above.

公开(公告)号：MY125609A

公开(公告)日：2006-08-30

申请号：MYPI9605184

申请日：1996-12-10

Applicant: BASF AG

Inventor： DONATH CALVIN F ,  NESTLER GERHARD DR ,  AICHINGER HEINRICH DR ,  HERBST HOLGER DR ,  DARLINGTON JERRY W ,  HEIMANN JOHN C ,  MCGLONE NICOLE E

IPC: B01J27/04 ,  C07C67/08 ,  B01J27/16 ,  C07B61/00 ,  C07C27/02 ,  C07C57/04 ,  C07C67/03 ,  C07C67/54 ,  C07C67/60 ,  C07C69/54

Abstract: IN A PROCESS FOR ESTERIFYING (METH)ACRYLIC ACID WITH AN ALKANOL IN THE PRESENCE OF AN ESTERIFICATION CATALYST IN WHICH UNREACTED STARTING COMPOUNDS AND THE (METH)ACRYLIC ESTER FORMED ARE SEPARATED OFF BY DISTILLATION AND A BOTTOM PRODUCT CONTAINING OXY ESTERS IS OBTAINED, THE BOTTOM PRODUCT IS SEPARATED OFF AND EITHER THE BOTTOM PRODUCT IS DIRECTLY ADMIXED WITH (METH)ACRYLIC ACID AND THE OXY ESTERS PRESENT IN THE BOTTOM PRODUCT ARE THEN DISSOCIATED AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF ACID CATALYSTS DIFFERENT FROM (METH)ACRYLIC ACID, OR THE OXY ESTERS ARE FIRST SEPARATED BY DISTILLATION FROM THE BOTTOM PRODUCT, THE DISTILLATE IS ADMIXED WITH (METH)ACRYLIC ACID AND IS THEN DISSOCIATED AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF ACID CATALYSTS DIFFERENT FROM (METH)ACRYLIC ACID.

公开(公告)号：MY118758A

公开(公告)日：2005-01-31

申请号：MYPI9605168

申请日：1996-12-09

Applicant: BASF AG

Inventor： DONATH CALVIN F ,  NESTLER GERHARD DR ,  AICHINGER HEINRICH DR ,  HERBST HOLGER DR ,  DARLINGTON JERRY W ,  HEIMANN JOHN C ,  MCGLONE NICOLE E

IPC: B01J27/16 ,  C07C67/60 ,  B01J31/02 ,  C07B61/00 ,  C07C27/02 ,  C07C57/04 ,  C07C67/03 ,  C07C67/08 ,  C07C67/54 ,  C07C69/54

Abstract: IN A PROCESS FOR ESTERIFYING (METH)ACRYLIC ACID WITH AN ALKANOL IN THE PRESENCE OF AN ESTERIFICATION CATALYST IN WHICH UNREACTED STARTING COMPOUNDS AND THE (METH)ACRYLIC ESTER FORMED ARE SEPARATED OFF BY DISTILLATION AND A BOTTOM PRODUCT CONTAINING OXY ESTERS IS OBTAINED, THE BOTTOM PRODUCT IS SEPARATED OFF AND EITHER THE BOTTOM PRODUCT IS DIRECTLY ADMIXED WITH OLIGOMERIC (METH)ACRYLIC ACID AND THE OXY ESTERS PRESENT IN THE BOTTOM PRODUCT ARE DISSOCIATED AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF ACID CATALYSTS DIFFERENT FROM OLIGOMERIC (METH)ACRYLIC ACID, OR THE OXY ESTERS ARE FIRST SEPARATED BY DISTILLATION FROM THE BOTTOM PRODUCT, THE DISTILLATE IS ADMIXED WITH OLIGOMERIC (METH)ACRYLIC ACID AND IS DISSOCIATED AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF ACID CATALYSTS DIFFERENT FROM OLIGOMERIC (METH)ACRYLIC ACID.

公开(公告)号：SG79928A1

公开(公告)日：2001-04-17

申请号：SG1996011746

申请日：1996-12-17

Applicant: BASF AG

Inventor： NESTLER GERHARD ,  AICHINGER HEIRICH ,  HERBST HOLGER ,  MCGLONE NICOLE E ,  DARLINGTON JERRY W ,  DONATH CALVIN F ,  HEIMANN JOHN C

IPC: B01J27/16 ,  B01J31/02 ,  C07B61/00 ,  C07C27/02 ,  C07C57/04 ,  C07C67/03 ,  C07C67/08 ,  C07C67/54 ,  C07C67/60 ,  C07C69/54

Abstract: A process for esterifying (meth)acrylic acid with an alkanol in the presence of esterification catalyst comprises: (i) sepg. unreacted starting materials and the ester obtd. by distn., and (ii) producing a bottom prod. contg. an oxy-ester. The bottom prod. is isolated and processed by: (a) direct treatment with oligomeric (meth)acrylic acid (I) followed by heating in the presence of acid catalysts other than (I) to effect cleavage of the oxy-ester, or (b) sepn. of the oxy-ester by distn., followed by treatment of the distillate with (I) and thermal cleavage as above.

公开(公告)号：DE59605038D1

公开(公告)日：2000-05-31

申请号：DE59605038

申请日：1996-12-13

Applicant: BASF AG

Inventor： NESTLER GERHARD ,  AICHINGER HEIRICH ,  HERBST HOLGER ,  MCGLONE NICOLE E ,  DARLINGTON JERRY W ,  DONATH CALVIN F ,  HEIMANN JOHN C

IPC: B01J27/16 ,  B01J31/02 ,  C07B61/00 ,  C07C27/02 ,  C07C57/04 ,  C07C67/03 ,  C07C67/08 ,  C07C67/54 ,  C07C67/60 ,  C07C69/54

Abstract: A process for esterifying (meth)acrylic acid with an alkanol in the presence of esterification catalyst comprises: (i) sepg. unreacted starting materials and the ester obtd. by distn., and (ii) producing a bottom prod. contg. an oxy-ester. The bottom prod. is isolated and processed by: (a) direct treatment with oligomeric (meth)acrylic acid (I) followed by heating in the presence of acid catalysts other than (I) to effect cleavage of the oxy-ester, or (b) sepn. of the oxy-ester by distn., followed by treatment of the distillate with (I) and thermal cleavage as above.

公开(公告)号：CZ369196A3

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

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：DK0780360T3

公开(公告)日：2000-08-07

申请号：DK96120076

申请日：1996-12-13

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

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：DE59605039D1

公开(公告)日：2000-05-31

申请号：DE59605039

申请日：1996-12-13

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

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：BR9703408A

公开(公告)日：1999-01-05

申请号：BR9703408

申请日：1997-05-27

Applicant: BASF AG

Inventor： MCGLONE NICOLE E ,  DARLINGTON JERRY W ,  DONATH CALVIN F ,  HEIMANN JOHN C ,  NESTLER GERHARD ,  AICHINGER HEINRICH ,  HERBST HOLGER

IPC: B01J27/16 ,  B01J31/02 ,  C07B61/00 ,  C07C27/02 ,  C07C57/04 ,  C07C67/03 ,  C07C67/08 ,  C07C67/54 ,  C07C67/60 ,  C07C69/54

Abstract: A process for esterifying (meth)acrylic acid with an alkanol in the presence of esterification catalyst comprises: (i) sepg. unreacted starting materials and the ester obtd. by distn., and (ii) producing a bottom prod. contg. an oxy-ester. The bottom prod. is isolated and processed by: (a) direct treatment with oligomeric (meth)acrylic acid (I) followed by heating in the presence of acid catalysts other than (I) to effect cleavage of the oxy-ester, or (b) sepn. of the oxy-ester by distn., followed by treatment of the distillate with (I) and thermal cleavage as above.

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).