(19)

(11)

EP 0 500 819 A1

(12)

(43) Date of publication: 02.09.1992 Bulletin 1992/36 (21) Application number: 91910074.0 (22) Date of filing: 09.04.1991

(51) International Patent Classification (IPC):  C11D 1/ 37( . ) C11D 1/ 94( . ) C11D 1/ 75( . ) C11D 1/ 88( . ) C11D 3/ 33( . ) (86) International application number: PCT/SE1991/000257 (87) International publication number: WO 1992/005236 (02.04.1992 Gazette 1992/08)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI NL SE (30) Priority: 19.09.1990 SE 19900002986 (71) Applicant: BEROL NOBEL AB S-444 85 Stenungsund (SE)	(72) Inventor: PALICKA, Jadwiga S-181 46 Lidingö (SE) (74) Representative: Schöld, Zaid  Eka Nobel AB Patent Department Box 11556 S-100 61 Stockholm S-100 61 Stockholm (SE)