Global Patent Index - EP 1257529 A2

EP 1257529 A2 2002-11-20 - METHOD FOR PRODUCING NITROGUANIDINE

Title (en)

METHOD FOR PRODUCING NITROGUANIDINE

Title (de)

VERFAHREN ZUR HERSTELLUNG VON NITROGUANIDIN

Title (fr)

PROCEDE POUR LA PRODUCTION DE NITROGUANIDINE

Publication

EP 1257529 A2 (DE)

Application

EP 00991230 A

Priority

  • DE 19961438 A
  • EP 0013009 W

Abstract (en)

[origin: WO0146129A2] The invention relates to a method for producing nitroguanidine. According to the inventive method, guanidine nitrate or guanidine carbonate a dehydrated in a first step with high concentration nitric acid (> 85 %). The nitroguanidine nitrate formed is hydrolyzed in a second step with water to give nitroguanidine and nitric acid. The concentration of the nitric acid produced in the hydrolysis must not exceed 25 %.

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

C07C 277/00

IPC 8 full level (invention and additional information)

C07C 277/08 (2006.01); C07C 279/34 (2006.01)

CPC (invention and additional information)

C07C 277/08 (2013.01)

Combination set (CPC)

C07C 277/08 + C07C 279/34

Citation (search report)

See references of WO 0146129A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0146129 A2 20010628; WO 0146129 A3 20020110; AU 3161701 A 20010703; DE 10065938 A1 20011220; EP 1257529 A2 20021120; NO 20022956 A 20020619; NO 20022956 D0 20020619

INPADOC legal status


2009-06-10 [18R] REFUSED

- Effective date: 20090120

2005-06-22 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20050506

2002-11-20 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020722

2002-11-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-11-20 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI