Global Patent Index - EP 0970037 A1

EP 0970037 A1 2000-01-12 - METHOD FOR THE SYNTHESIS OF ANTI-MICROBIAL HYDROXYBENZOATS

Title (en)

METHOD FOR THE SYNTHESIS OF ANTI-MICROBIAL HYDROXYBENZOATS

Title (de)

METHODE ZUR SYNTHESE VON ANTI-MICROBIALEN HYDROXYBENZOATEN

Title (fr)

PROCEDE DE SYNTHESE D'HYDROXYBENZOATES ANTIMICROBIENS

Publication

EP 0970037 A1 (EN)

Application

EP 98925340 A

Priority

  • BE 9800084 W
  • BE 9700491 A

Abstract (en)

[origin: WO9856748A1] Method for synthesizing 4-hydroxybenzoates whose boiling point, and the boiling point of the alcohol with which the benzoate is synthesized, is higher than the boiling point of benzene. In a noteworthy manner 4-hydroxybenzoic acid and hexanol, together with sulphuric acid p.a., are boiled with reflux cooling in benzene or toluene, as the case may be, with the water released during this reaction being removed, preferably with a Dean-Stark apparatus, via azeotrope formation with benzene or toluene, as the case may be.

IPC 1-7 (main, further and additional classification)

C07C 67/08; A01N 37/10; C07C 69/88

IPC 8 full level (invention and additional information)

C07C 67/08 (2006.01)

CPC (invention and additional information)

C07C 67/08 (2013.01)

Combination set (CPC)

C07C 67/08 + C07C 69/84

Citation (search report)

See references of WO 9856748A1

Designated contracting state (EPC)

BE DE DK FI FR GB NL SE

EPO simple patent family

WO 9856748 A1 19981217; AU 7752698 A 19981230; BE 1011198 A6 19990601; EP 0970037 A1 20000112

INPADOC legal status


2001-07-04 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20001231

2000-01-12 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19990318

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): BE DE DK FI FR GB NL SE