EP 0973718 A1 2000-01-26 - METHOD FOR EXTRACTING (METH)ACRYLIC ACID
Title (en)
METHOD FOR EXTRACTING (METH)ACRYLIC ACID
Title (de)
VERFAHREN ZUR EXTRAKTION VON (METH)ACRYLSÄURE
Title (fr)
PROCEDE D'EXTRACTION D'ACIDE (METH)ACRYLIQUE
Publication
Application
Priority
- DE 19709392 A
- EP 9801256 W
Abstract (en)
[origin: DE19709392A1] The invention relates to a method for extracting an aqueous solution containing (meth)acrylic acid. Said solution is brought into contact with a solution containing at least one extracting agent which can be converted into (meth)acrylic acid and forms a miscibility gap with the aqueous solution to produce an organic phase containing (meth)acrylic acid and extraction agent and an aqueous phase.
IPC 1-7 (main, further and additional classification)
IPC 8 full level (invention and additional information)
C07C 51/48 (2006.01); C07C 57/04 (2006.01); C07C 57/07 (2006.01)
CPC (invention and additional information)
C07C 51/48 (2013.01)
Combination set (CPC)
Citation (search report)
See references of WO 9840342A1
Designated contracting state (EPC)
BE DE ES FR GB IT NL
EPO simple patent family
DE 19709392 A1 19980910; AU 6827698 A 19980929; BR 9808158 A 20000328; CA 2282492 A1 19980917; CN 1249739 A 20000405; EP 0973718 A1 20000126; ID 22758 A 19991209; JP 2001514643 A 20010911; KR 20000075989 A 20001226; TW 438760 B 20010607; WO 9840342 A1 19980917
INPADOC legal status
2000-09-13 [18W] WITHDRAWN
- Date of withdrawal: 20000719
2000-01-26 [17P] REQUEST FOR EXAMINATION FILED
- Effective date: 19990825
2000-01-26 [AK] DESIGNATED CONTRACTING STATES:
- Kind Code of Ref Document: A1
- Designated State(s): BE DE ES FR GB IT NL