Global Patent Index - EP 1066031 A2

EP 1066031 A2 2001-01-10 - METHOD FOR THE PRODUCTION OF MICRO CAPSULES

Title (en)

METHOD FOR THE PRODUCTION OF MICRO CAPSULES

Title (de)

VERFAHREN ZUR HERSTELLUNG VON MIKROKAPSELN

Title (fr)

PROCEDE DE PRODUCTION DE MICROCAPSULES

Publication

EP 1066031 A2 (DE)

Application

EP 99914516 A

Priority

  • DE 19813011 A
  • EP 9901626 W

Abstract (en)

[origin: DE19813011A1] A method for the production of micro capsules by atomizing an aqueous solution (1) containing 0.1-5 wt. % of at least one water-soluble polyanion to form liquid droplets. The liquid droplets thus obtained impinge upon a liquid film of an aqueous solution (2), containing: 0.1-5 wt. % calcium cations, 0.001-0.4 wt. % chitosane with a molecular weight of more than 40,000 g/mol, and/or 0.1-5 wt. % chitosane with a average molecular weight of 500-40,000 g/mol.

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

A61K 9/16; A61K 9/50; A61K 9/51

IPC 8 full level (invention and additional information)

A61K 9/16 (2006.01); A61K 9/50 (2006.01); A61K 9/51 (2006.01); A61K 47/36 (2006.01); B01J 13/04 (2006.01); B01J 13/14 (2006.01); C08L 5/08 (2006.01)

CPC (invention and additional information)

B01J 13/043 (2013.01); C08L 5/08 (2013.01)

Citation (search report)

See references of WO 9948480A3

Designated contracting state (EPC)

AT BE CH DE DK FR GB IT LI NL SE

EPO simple patent family

DE 19813011 A1 19991014; AU 3330699 A 19991018; AU 733233 B2 20010510; CA 2325420 A1 19990930; EP 1066031 A2 20010110; JP 2002507473 A 20020312; WO 9948480 A2 19990930; WO 9948480 A3 19991125

INPADOC legal status


2002-01-16 [18W] WITHDRAWN

- Date of withdrawal: 20011115

2001-01-10 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001025

2001-01-10 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH DE DK FR GB IT LI NL SE