(19)

(11)

EP 1 009 867 A1

(12)

(43) Date of publication: 21.06.2000 Bulletin 2000/25 (21) Application number: 98921044.8 (22) Date of filing: 15.05.1998

(51) International Patent Classification (IPC)7: C23F 11/00, C23F 11/18, C23C 22/34, C23C 22/40, C23C 22/68 (86) International application number: PCT/US9809/374 (87) International publication number: WO 9851/841 (19.11.1998 Gazette 1998/46)

(84) Designated Contracting States: AT BE DE ES FR GB IT NL SE (30) Priority: 16.05.1997 US 46682 P (71) Applicant: HENKEL CORPORATION Plymouth Meeting, PA 19462 (US)	(72) Inventor: DOLAN, Shawn, E. Sterling Heights, MI 48312 (US) (74) Representative: Sanderson, Laurence Andrew et al SANDERSON & CO.European Patent Attorneys34, East Stockwell Street ColchesterEssex CO1 1ST ColchesterEssex CO1 1ST (GB)