EP 0069950 B1 19851023 - PROCESS FOR PHOSPHATING METAL SURFACES
Title (en)
PROCESS FOR PHOSPHATING METAL SURFACES
Publication
Application
Priority
US 28248081 A 19810713
Abstract (en)
[origin: ES8305051A1] An aqueous acidic zinc phosphate coating composition for treating a metal surface to provide a conversion coating thereon, the composition comprising chlorate anion and an aromatic nitro anion in a weight ratio of less than 2:1 to about 1:10.
IPC 1-7
IPC 8 full level
C09D 1/00 (2006.01); C23C 22/14 (2006.01); C23C 22/17 (2006.01); C23C 22/34 (2006.01); C23C 22/36 (2006.01); C23F 11/16 (2006.01)
CPC (source: EP KR US)
C23C 22/14 (2013.01 - EP US); C23C 22/362 (2013.01 - EP US); C23F 11/16 (2013.01 - KR)
Designated contracting state (EPC)
BE DE FR IT
DOCDB simple family (publication)
EP 0069950 A1 19830119; EP 0069950 B1 19851023; AU 549517 B2 19860130; AU 8495282 A 19830120; BR 8204044 A 19830705; CA 1200471 A 19860211; DE 3224923 A1 19830217; DE 3267010 D1 19851128; ES 513841 A0 19830401; ES 8305051 A1 19830401; GB 2102839 A 19830209; JP H0331790 B2 19910508; JP S5819481 A 19830204; KR 840000670 A 19840225; KR 890001036 B1 19890420; MX 157371 A 19881118; PH 19127 A 19860108; PT 75220 A 19820801; PT 75220 B 19840723; US 4498935 A 19850212; ZA 824588 B 19830525
DOCDB simple family (application)
EP 82105960 A 19820703; AU 8495282 A 19820617; BR 8204044 A 19820712; CA 405302 A 19820616; DE 3224923 A 19820703; DE 3267010 T 19820703; ES 513841 A 19820709; GB 8219750 A 19820708; JP 12194982 A 19820713; KR 820003103 A 19820712; MX 19357982 A 19820713; PH 27500 A 19820625; PT 7522082 A 19820709; US 28248081 A 19810713; ZA 824588 A 19820628