(19)
(11)
EP 0 725 844 A1
(12)
(43)
Date of publication:
14.08.1996
Bulletin 1996/33
(21)
Application number:
94900395.0
(22)
Date of filing:
26.10.1993
(51)
International Patent Classification (IPC):
C23C
22/
78
( . )
C23G
1/
14
( . )
C23C
22/
80
( . )
(86)
International application number:
PCT/US1993/010243
(87)
International publication number:
WO 1995/012011
(
04.05.1995
Gazette 1995/19)
(84)
Designated Contracting States:
AT BE DE ES FR GB NL PT SE
(71)
Applicant:
HENKEL CORPORATION
Plymouth Meeting, PA 19462 (US)
(72)
Inventors:
KRAMER, Linda S.
Troy, MI 48098 (US)
DUNN, Robin M.
Royal Oak, MI 48067 (US)
GILES, Terrence R.
Brighton, MI 48116 (US)
MILLER, Robert W.
Clarkston, MI 48346 (US)
(74)
Representative:
Sanderson, Laurence Andrew
SANDERSON & CO. European Patent Attorneys 34, East Stockwell Street
Colchester Essex CO1 1ST
Colchester Essex CO1 1ST (GB)
(54)
A PROCESS FOR ACTIVATING A METAL SURFACE FOR CONVERSION COATING