Process and aqueous compositions for treating metal surfaces

C - Chemistry – Metallurgy – 09 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

148/16

C09D 5/12 (2006.01) C23C 22/00 (2006.01) C23C 22/34 (2006.01) C23C 22/36 (2006.01)

Patent

CA 1219790

ABSTRACT OF THE DISCLOSURE The invention relates to a process for treating metal surfaces, preferably of aluminum, aluminum alloys and steel, for the subsequent application of organic coating composi- tions. The metal surfaces are wetted with an aqueous bath solution containing chromium(III)ions, fluoride ions and an organic film former which is soluble or homogeneously dis- persible in water, after which the solution applied is dried and converted by heating into a water-insoluble film. The bath solution preferably contains the following con- stituents and approximate quantities thereof: 0.5 to 10 g/l of chromium(III)ions, 0.55 to 11 g/l of fluoride ions, 0.6 to 12.5 g/l of phosphate ions, and 0.1.5 to 5.0 g/l of organic film former. The organic film former preferably used is a polymer containing free carboxyl groups, more preferably a homopolymer and/or copolymer of acrylic and/or methacrylic acid.

442149

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Process and aqueous compositions for treating 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 Process and aqueous compositions for treating metal surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and aqueous compositions for treating metal surfaces will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1233620

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.