(19)

(11)

EP 0 097 188 A1

(12)

(43) Date of publication: 04.01.1984 Bulletin 1984/01 (21) Application number: 83900024.0 (22) Date of filing: 07.12.1982

(51) International Patent Classification (IPC):  C13K 13/ 00( . ) D21C 3/ 04( . ) D21C 11/ 00( . ) D21C 3/ 00( . ) D21C 3/ 20( . ) (86) International application number: PCT/EP1982/000255 (87) International publication number: WO 1983/002125 (23.06.1983 Gazette 1983/15)

(84) Designated Contracting States: AT DE GB SE (30) Priority: 10.12.1981 US 19810329360 (71) Applicant: BATTELLE MEMORIAL INSTITUTE CH-1227 Carouge/Genève (CH)	(72) Inventors: TOURNIER, Hervé F-74520 Valleiry (FR) JOHANSSON, Ake Allan ch-1217 Meyrin (CH) SACHETTO, Jean Pierre F-74160 Saint-Julien en Genevois (FR) ARMANET, Jean-Michel CH-1213 Onex (CH) MICHEL, Jean-Pierre F-74160 Collonges sous Salève (FR) ROMAN, Alain F-74160 Bossey (FR)