Global Patent Index - EP 0859871 A4

EP 0859871 A4 2001-04-18 - COMPOSITION AND PROCESS FOR SURFACE TREATMENT OF ALUMINUM AND ITS ALLOYS

Title (en)

COMPOSITION AND PROCESS FOR SURFACE TREATMENT OF ALUMINUM AND ITS ALLOYS

Title (de)

ZUSAMMENSETZUNG UND VERFAHREN FÜR DIE OBERFLÄCHENBEHANDLUNG VON ALUMINIUM UND SEINEN LEGIERUNGEN

Title (fr)

COMPOSITION ET PROCEDE DE TRAITEMENT DE SURFACE DE L'ALUMINIUM ET DE SES ALLIAGES

Publication

EP 0859871 A4 (EN)

Application

EP 96934123 A

Priority

  • JP 26550195 A
  • US 9616132 W

Abstract (en)

[origin: WO9713887A1] An aqueous liquid surface treatment composition having a pH value not more than 6.5 and containing phosphoric acid ions, condensed phosphoric acid ions, an oxidizing agent, and a water-soluble polymer consisting, except for end groups, of polymer units expressed by formula (I), in a weight ratio of 0.1 to 30 : 0.1 to 10 : 0.1 to 10 : 0.1 to 20 respectively, when brought into contact with an aluminiferous metal surface, rapidly forms on the surface a conversion coating that has good corrosion resistance and adhesion to subsequently applied organic coatings such as paint and is less easily damaged by mechanical stresses than prior art conversion coatings.

IPC 1-7 (main, further and additional classification)

C23C 22/08; C23C 22/23

IPC 8 full level (invention and additional information)

B05D 7/14 (2006.01); C08G 8/20 (2006.01); C09D 5/08 (2006.01); C09D 161/12 (2006.01); C09D 161/20 (2006.01); C23C 22/23 (2006.01); C23C 22/78 (2006.01)

CPC (invention and additional information)

C23C 22/23 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI NL

EPO simple patent family

WO 9713887 A1 19970417; AR 003859 A1 19980909; AU 709612 B2 19990902; AU 7261696 A 19970430; BR 9611045 A 19990706; CA 2232998 A1 19970417; CN 1081663 C 20020327; CN 1154390 A 19970716; EP 0859871 A1 19980826; EP 0859871 A4 20010418; JP 3544761 B2 20040721; JP H09111466 A 19970428; MX 9802196 A 19980830; NZ 319963 A 19990729; TW 375659 B 19991201; ZA 9608625 B 19970814

INPADOC legal status


2004-11-10 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040501

2004-10-06 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: HENKEL CORPORATION

2001-04-18 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20010302

2001-04-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE CH DE ES FR GB GR IT LI NL

1998-08-26 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980511

1998-08-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE ES FR GB GR IT LI NL