(19)
(11) EP 0 977 908 A1

(12)

(43) Date of publication:
09.02.2000 Bulletin 2000/06

(21) Application number: 98908792.9

(22) Date of filing: 09.03.1998
(51) International Patent Classification (IPC)7: C23C 22/78
(86) International application number:
PCT/US9803/934
(87) International publication number:
WO 9839/498 (11.09.1998 Gazette 1998/36)
(84) Designated Contracting States:
DE ES FR GB IT

(30) Priority: 07.03.1997 JP 5218197

(71) Applicant: HENKEL CORPORATION
Plymouth Meeting, PA 19462 (US)

(72) Inventors:
  • NAKAYAMA, Takaomi
    Hiratsuka-shi 254 (JP)
  • NAGASHIMA, Yasuhiko
    Hiratsuka-shi 254 (JP)
  • SHIMODA, Kensuke
    Hiratsuka-shi 254 (JP)

(74) Representative: Sanderson, Laurence Andrew et al
SANDERSON & CO.European Patent Attorneys34, East Stockwell Street
ColchesterEssex CO1 1ST
ColchesterEssex CO1 1ST (GB)

   


(54) CONDITIONING METAL SURFACES PRIOR TO PHOSPHATE CONVERSION COATING