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公开(公告)号：JPH09183752A
公开(公告)日：1997-07-15
申请号：JP33583696
申请日：1996-12-16
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.
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公开(公告)号：JPH09183753A
公开(公告)日：1997-07-15
申请号：JP33697796
申请日：1996-12-17
Applicant: BASF AG
Inventor： NESTLER GERHARD , AICHINGER HEINRICH , HERBST HOLGER , MCGLONE NICOLE E , DARLINGTON JERRY W , DONATH CALVIN F , HEIMANN JOHN C
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公开(公告)号：SG79930A1
公开(公告)日：2001-04-17
申请号：SG1996011800
申请日：1996-12-18
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).
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公开(公告)号：DK0780359T3
公开(公告)日：2000-08-07
申请号：DK96120074
申请日：1996-12-13
Applicant: BASF AG
Inventor： AICHINGER HEINRICH , NESTLER GERHARD , 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.
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公开(公告)号：CZ369096A3
公开(公告)日：1997-07-16
申请号：CZ369096
申请日：1996-12-16
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.
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Patent Agency Ranking
公开(公告)号：CA2193408A1
公开(公告)日：1997-06-20
申请号：CA2193408
申请日：1996-12-18
Applicant: BASF AG
Inventor： NESTLER GERHARD , AICHINGER HEINRICH , 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: 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.
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公开(公告)号：CA2193407A1
公开(公告)日：1997-06-20
申请号：CA2193407
申请日：1996-12-18
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: 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.
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公开(公告)号：ES2145372T3
公开(公告)日：2000-07-01
申请号：ES96120076
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
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).
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公开(公告)号：ES2145371T3
公开(公告)日：2000-07-01
申请号：ES96120074
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
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.
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公开(公告)号：CZ9603690A3
公开(公告)日：1997-07-16
申请号：CZ369096
申请日：1996-12-16
Applicant: BASF AG
Inventor： NESTLER GERHARD , AICHINGER HEIRICH , HERBST HOLGER , MCGLONE NICOLE E , DARLINGTON JERRY W , DONATH CALVIN F , HEIMANN JOHN C
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