Title (en)

PROCESS FOR PREPARING PURE 2-HYDROXYBENZYL ALCOHOL AND PURE 4-HYDROXYBENZYL ALCOHOL OR A MIXTURE OF BOTH HYDROXYBENZYL ALCOHOLS

Publication

EP 0000165 B1 19810603 (DE)

Application

EP 78100188 A 19780619

Priority

DE 2729075 A 19770628

Abstract (en)

[origin: US4192959A] A process for the preparation of pure 2-hydroxybenzyl alcohol, pure 4-hydroxybenzyl alcohol or a mixture of both hydroxybenzyl alcohols by reacting phenol and formaldehyde in the presence of a basic catalyst and subjecting the resulting reaction mixture to an at least 2-stage countercurrent extraction in a solvent system of water/organic solvent which is water-immiscible or water-miscible only to a limited extent.

IPC 1-7

C07C 39/11; C07C 37/72; C07C 37/20

IPC 8 full level

C07C 27/00 (2006.01); C07C 37/20 (2006.01); C07C 37/72 (2006.01); C07C 39/11 (2006.01); C07C 67/00 (2006.01)

CPC (source: EP US)

C07C 37/20 (2013.01 - EP US); C07C 37/72 (2013.01 - EP US)

C-Set (source: EP US)

1. C07C 37/20 + C07C 39/11
2. C07C 37/72 + C07C 39/11

Designated contracting state (EPC)

BE CH DE FR NL

DOCDB simple family (publication)

EP 0000165 A1 19790110; EP 0000165 B1 19810603; DE 2729075 A1 19790118; DE 2860743 D1 19810910; IT 1105067 B 19851028; IT 7850028 A0 19780626; JP S5436223 A 19790316; JP S6045616 B2 19851011; US 4192959 A 19800311

DOCDB simple family (application)

EP 78100188 A 19780619; DE 2729075 A 19770628; DE 2860743 T 19780619; IT 5002878 A 19780626; JP 7658978 A 19780626; US 91548978 A 19780614