The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 20, 2002
Filed:
Dec. 17, 1999
Hans-Jürgen P. Adler, Pirna, DE;
Christian Bram, Lauf, DE;
Ralf Feser, Iserlohn, DE;
Evelin Jähne, Dresden, DE;
Christian Jung, Erlangen, DE;
Iris Mäge, Dresden, DE;
Jürgen Rudolph, Mörstandt, DE;
Lars Sebralla, Bruchköbel, DE;
Martin Stratmann, Neukirchen-Brand, DE;
Chemetall GmbH, Frankfurt am Main, DE;
Abstract
The invention relates to a method for treating metallic surfaces consisting of zinc, magnesium or aluminium or of the alloys of zinc, magnesium or aluminium, to which lacquer, coatings of plastic material, paint, sealants or adhesives are applied after treatment. The treatment of the metallic surfaces takes place at between 10° C. and 100° C. by immersion, spraying or rolling with an aqueous solution. The solution has a pH of between 2 and 13 and contains one or more compounds of the type XYZ at a concentration of between 10 and 1 mol/l. Y is an organic group containing between 2 and 50 C atoms and has a straight-chain structure. X is a COOH, HSO , HSO , (OH) PO, (OH) PO , (OH)(OR′)PO or (OH)(OR′)PO group. Z is a OH, SH, NH , NHR′, CN, CH═CH , OCN, epoxy, CH ═CR″—COO, acrylamide, COOH, (OH) PO, (OH) PO , (OH)(OR′)PO or (OH)(OR′)PO group. R′ is an alkyl group with between 1 and 4 C atoms. R″ is an H atom or an alkyl group with between 1 and 4 C atoms. Groups X. and Z are each bonded to group Y in their final positions.