(19)

(11)

EP 1 009 781 A1

(12)

(43) Date of publication: 21.06.2000 Bulletin 2000/25 (21) Application number: 97945666.2 (22) Date of filing: 18.11.1997

(51) International Patent Classification (IPC)7: C09K 15/30, C09K 15/02, C23F 11/14, C23F 11/18, C23F 11/173 (86) International application number: PCT/AU9700/784 (87) International publication number: WO 9822/554 (28.05.1998 Gazette 1998/21)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 18.11.1996 AU PO371096 (71) Applicant: Green, Bruce Northampton NN6 7PD (GB)	(72) Inventor: GREEN, Bruce, Phillip Northamptonshire NN6 7PD (GB) (74) Representative: Hepworth, John Malcolm et al Hepworth Lawrence Bryer & BizleyBloxam CourtCorporation Street Rugby,Warwickshire CV21 2DU Rugby,Warwickshire CV21 2DU (GB)