(19)
(11) EP 1 165 857 A1

(12)

(43) Date of publication:
02.01.2002 Bulletin 2002/01

(21) Application number: 00916098.7

(22) Date of filing: 03.03.2000
(51) International Patent Classification (IPC)7C23C 22/00
(86) International application number:
PCT/US0005/766
(87) International publication number:
WO 0052/226 (08.09.2000 Gazette 2000/36)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 04.03.1999 US 122810 P
09.08.1999 US 147932 P
07.10.1999 US 158171 P

(71) Applicant: HENKEL CORPORATION
Gulph Mills, Pennsylvania 19406 (US)

(72) Inventors:
  • GOODREAU, Bruce, H.
    Romeo, MI 48065 (US)
  • MILLER, Robert, W.
    Oakland, MI 48363 (US)
  • PRESCOTT, Thomas, J.
    Troy, MI 48098 (US)
  • ENGEL, Christopher, A.
    Southfield, MI 48034 (US)
  • MURPHY, Michael, A.
    Macomb, MI 48044 (US)
  • BERSHAS, James, P.
    West Bloomfield, MI 48324 (US)
  • PIERCE, John
    Huntington Woods, MI 48070 (US)

(74) Representative: Sanderson, Laurence Andrew et al
SANDERSON & CO. 34, East Stockwell Street
Colchester Essex CO1 1ST
Colchester Essex CO1 1ST (GB)

   


(54) COMPOSITION AND PROCESS FOR TREATING METAL SURFACES