Global Patent Index - EP 0973718 A1

EP 0973718 A1 20000126 - 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 20000126 (DE)

Application

EP 98913652 A 19980305

Priority

  • DE 19709392 A 19970307
  • EP 9801256 W 19980305

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

C07C 51/48; C07C 57/04

IPC 8 full level

C07C 51/48 (2006.01); C07C 57/04 (2006.01); C07C 57/07 (2006.01)

CPC (source: EP)

C07C 51/48 (2013.01)

C-Set (source: EP)

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

DOCDB simple family (publication)

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

DOCDB simple family (application)

DE 19709392 A 19970307; AU 6827698 A 19980305; BR 9808158 A 19980305; CA 2282492 A 19980305; CN 98803154 A 19980305; EP 9801256 W 19980305; EP 98913652 A 19980305; ID 990963 A 19980305; JP 53918298 A 19980305; KR 19997008075 A 19990906; TW 87103308 A 19980306