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

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

CPC classification number: C07C67/08 ,  C07C67/60 ,  C07C69/54

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).