Global patent index - EP 0973718 A1

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

EP 0973718 A1 (DE)

Application

EP 98913652 A

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)

C07C 51/48; C07C 57/04

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)

C07C 51/48 + C07C 57/04

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2000-09-13 [18W] WITHDRAWN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