(19)

(11)

EP 0 451 160 A1

(12)

(43) Date of publication: 16.10.1991 Bulletin 1991/42 (21) Application number: 89912680.0 (22) Date of filing: 21.11.1989

(51) International Patent Classification (IPC):  C10M 175/ 02( . ) C10M 175/ 00( . ) C10N 30/ 16( . ) C10M 173/ 02( . ) C10M 175/ 04( . ) C10N 40/ 22( . ) (86) International application number: PCT/SE1989/000677 (87) International publication number: WO 1990/005768 (31.05.1990 Gazette 1990/12)

(84) Designated Contracting States: AT BE CH DE ES FR GB IT LI LU NL SE (30) Priority: 21.11.1988 SE 19880004206 (71) Applicant: PEGASUS SEPARATION AB S-751 03 Uppsala (SE)	(72) Inventor: STRÖM, Gunnar S-756 52 Uppsala (SE) (74) Representative: Kummelsten, Per-Arne  UPPSALA PATENTBYRA P.O. Box 9013 S-750 09 Uppsala S-750 09 Uppsala (SE)