EP 0866887 A4 20010411 - FINELY CRYSTALLINE AND/OR FAST PHOSPHATE CONVERSION COATING COMPOSITION AND PROCESS
Title (en)
FINELY CRYSTALLINE AND/OR FAST PHOSPHATE CONVERSION COATING COMPOSITION AND PROCESS
Title (de)
ZUSAMMENSETZUNG UND VERFAHREN ZUR SCHNELLEN PHOSPHATUMWANDLUNGSBESCHICHTUNG UND/ODER MIT FEINEN KRISTALLEN
Title (fr)
COMPOSITION POUR REVETEMENT DE CONVERSION EN PHOSPHATE RAPIDE ET/OU A CRISTAUX FINS ET PROCEDE D'UTILISATION
Publication
Application
Priority
- US 9617086 W 19961031
- US 629495 P 19951107
Abstract (en)
[origin: WO9717480A1] A combination of difunctional organic acid, preferably a hydroxy acid such as citric acid, or salt thereof with acrylic acid/acrylate polymers in zinc phosphate conversion coating forming liquid compositions, preferably also containing hydroxylamine, results in crystal size refinement in the coating formed and/or faster formation of a sufficiently thick conversion coating to protect against subsequent rusting of a ferrous substrate.
IPC 1-7
IPC 8 full level
C23C 22/17 (2006.01); C23C 22/36 (2006.01)
CPC (source: EP KR)
C23C 22/17 (2013.01 - EP KR); C23C 22/184 (2013.01 - KR); C23C 22/365 (2013.01 - EP)
Citation (search report)
- [A] US 3346426 A 19671010 - LOUIS SCHLOSSBERG
- [A] SUGAMA T ET AL: "ADVANCED POLY(ACRYLIC)ACID-MODIFIED ZINC PHOSPHATE CONVERSION COATINGS: USE OF COBALT AND NICKEL CATIONS", SURFACE AND COATINGS TECHNOLOGY,ELSEVIER, AMSTERDAM,NL, vol. 50, no. 2, 1992, pages 89 - 95, XP000944764, ISSN: 0257-8972
- See references of WO 9717480A1
Designated contracting state (EPC)
BE DE ES FR GB IT SE
DOCDB simple family (publication)
WO 9717480 A1 19970515; AR 004289 A1 19981104; AU 7473196 A 19970529; BR 9611356 A 19990504; CN 1201495 A 19981209; EP 0866887 A1 19980930; EP 0866887 A4 20010411; JP 2000515586 A 20001121; KR 19990067389 A 19990816; ZA 969146 B 19970527
DOCDB simple family (application)
US 9617086 W 19961031; AR P960105068 A 19961106; AU 7473196 A 19961031; BR 9611356 A 19961031; CN 96198123 A 19961031; EP 96936939 A 19961031; JP 51820397 A 19961031; KR 19980703399 A 19980507; ZA 969146 A 19961030