C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/07 (2006.01) C23C 22/12 (2006.01) C23C 22/17 (2006.01) C23C 22/18 (2006.01) C23C 22/36 (2006.01)
Patent
CA 2277967
An aqueous zinc phosphate conversion coating that contains 5 to 50 g/L of phosphate ions, 0.2 to 10 g/L of zinc ions, and 0.5 to 4.0 g/L as hydroxylamine of a hydroxylamine source, and also: (1) contains 0.01 to 5.0 g/L polycarboxylic acid or salt thereof and/or starch phosphate; or (2) has a zinc ions/phosphate ions weight ratio below 0.27 and a zinc ions concentration of at least 2.0 g/L forms high quality zinc phosphating coatings on metal surfaces even if the surfaces have not been previously conditioned by contact with a dispersion of colloidal titanium.
L'invention concerne une composition aqueuse de conversion à base de phosphate de zinc qui contient entre 5 et 50 g/L d'ions de phosphate, entre 0,2 et 10 g/L d'ions de zinc, et entre 0,5 et 4,0 g/L d'hydroxylamine d'une source d'hydroxylamine. Ladite composition aqueuse contient en outre (1) entre 0,001 et 5,0 g/L d'acide polycarboxylique ou le sel dudit acide et/ou un phosphate d'amidon; ou (2) un rapport en poids ions de zinc/ions de phosphate inférieur à 0,27 et une concentration d'ions de zinc d'au moins 2,0 g/L. La composition aqueuse donne des revêtements de phosphate-zinc de grande qualité sur des surfaces métalliques, même lorsque ces dernières ne sont pas préalablement traitées avec une dispersion de titane colloïdal.
Kawakami Masahiko
Kobayashi Naoyuki
Oyama Kazuyuki
Henkel Corporation
Swabey Ogilvy Renault
LandOfFree
Aqueous phosphating composition and process for metal surfaces does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aqueous phosphating composition and process for metal surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aqueous phosphating composition and process for metal surfaces will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2009356