EP 0859871 A4 20010418 - 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 20010418 (EN)

Application

EP 96934123 A 19961015

Priority

JP 26550195 A 19951013
US 9616132 W 19961015

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

C23C 22/08; C23C 22/23

IPC 8 full level

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 (source: EP KR)

C23C 22/10 (2013.01 - KR); C23C 22/23 (2013.01 - EP KR); C23C 22/76 (2013.01 - KR)

Citation (search report)

[A] WO 9504169 A1 19950209 - HENKEL CORP [US]
[A] WO 9119828 A1 19911226 - HENKEL CORP [US]
[A] GB 2250025 A 19920527 - HENKEL CORP [US]
[A] WO 9110756 A1 19910725 - HENKEL CORP [US]
[A] EP 0319017 A2 19890607 - PARKER CHEMICAL CO [US]
[PX] WO 9528509 A1 19951026 - HENKEL CORP [US], et al
[E] WO 9704144 A1 19970206 - HENKEL CORP [US], et al
See references of WO 9713887A1

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI NL

DOCDB simple family (publication)

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; KR 970021375 A 19970528; MX 9802196 A 19980830; NZ 319963 A 19990729; TW 375659 B 19991201; ZA 968625 B 19970814

DOCDB simple family (application)

US 9616132 W 19961015; AR P960104707 A 19961011; AU 7261696 A 19961015; BR 9611045 A 19961015; CA 2232998 A 19961015; CN 96112741 A 19961011; EP 96934123 A 19961015; JP 26550195 A 19951013; KR 19960044679 A 19961009; MX 9802196 A 19980320; NZ 31996396 A 19961015; TW 85112427 A 19961011; ZA 968625 A 19961011