Claims (13)
1. Otopina za obradu za postupak za proizvodnju antikorozivnog premaznog sloja na metalnoj površini, u kojoj se površina koja se obrađuje dovodi se u kontakt s otopinom za obradu koja sadrži
- izvor iona kroma(III),
- izvor fosfata,
- izvor iona cinka i
- izvor citrata,
pri čemu je molarni omjer iona kroma (III) i iona cinka
1: najmanje 1,65 i molarni omjer kroma(III) iona do citrata je
1: najmanje 1,4 i otopina za obradu sadrži manje od 10 g/l polimera koji se mogu dobiti reakcijom
- jedan ili više alkoksisilana formule R4-xSi(OR1)x
pri čemu su ostaci R identični ili različiti jedan od drugog i svaki predstavlja supstituiranu ili nesupstituiranu ugljikovodičnu skupinu koja ima 1 do 22 atoma ugljikovodika, x je 1, 2 ili 3 i R1 predstavlja supstituiranu ili nesupstituiranu ugljikovodičnu skupinu s 1 do 8 atoma ugljikovodika, i
- jedan ili više alkoksida formule Me(OR2)n
pri čemu Me predstavlja Ti, Zr, Hf, Al, Si i n za stupanj oksidacije Me i R2
predstavlja supstituiranu ili nesupstituiranu ugljikovodičnu skupinu s 1 do 8 ugljikovih atoma.1. A treatment solution for a process for producing an anticorrosive coating layer on a metal surface, wherein the surface to be treated is brought into contact with a treatment solution containing
- source of chromium(III) ions,
- source of phosphate,
- source of zinc ions i
- source of citrate,
where is the molar ratio of chromium (III) ions and zinc ions
1: at least 1.65 and the molar ratio of chromium(III) ions to citrate is
1: at least 1.4 and the processing solution contains less than 10 g/l of polymers that can be obtained by reaction
- one or more alkoxysilanes of the formula R4-xSi(OR1)x
wherein the residues R are identical or different from each other and each represents a substituted or unsubstituted hydrocarbon group having 1 to 22 hydrocarbon atoms, x is 1, 2 or 3 and R1 represents a substituted or unsubstituted hydrocarbon group having 1 to 8 hydrocarbon atoms, and
- one or more alkoxides of the formula Me(OR2)n
where Me represents Ti, Zr, Hf, Al, Si and n for the degree of oxidation of Me and R2
represents a substituted or unsubstituted hydrocarbon group with 1 to 8 carbon atoms.
2. Otopina za obradu prema zahtjevu 1, naznačena time što je molarni omjer iona kroma(111) prema fosfatu između 1:1,5 i 1:5, poželjno između 1:2 i 1:4,5 i posebno poželjno između 1:3 i 1:4.2. Treatment solution according to claim 1, characterized in that the molar ratio of chromium(111) ions to phosphate is between 1:1.5 and 1:5, preferably between 1:2 and 1:4.5 and especially preferably between 1: 3 and 1:4.
3. Otopina za obradu prema zahtjevu 1 ili 2, naznačena time što je molarni omjer iona kroma(III) prema cinku između 1:1,65 i 1:2,35 i iona kroma(III) prema citratu između 1:1,4 i 1:1,8.3. Treatment solution according to claim 1 or 2, characterized in that the molar ratio of chromium(III) ions to zinc is between 1:1.65 and 1:2.35 and chromium(III) ions to citrate is between 1:1.4 and 1:1.8.
4. Otopina za obradu prema jednom od prethodnih zahtjeva, naznačena time što se koncentracija iona cinka u otopini za obradu dobiva iz koncentracije iona kroma(III) u otopini za obradu prema formuli
[image]
i/ili koncentracija citrata u otopini za obradu izračunava se iz koncentracije iona kroma(III) u otopini za obradu i koncentracije iona cinka u otopini za obradu prema formuli
[image] 4. Treatment solution according to one of the previous claims, characterized in that the concentration of zinc ions in the treatment solution is obtained from the concentration of chromium(III) ions in the treatment solution according to the formula
[image]
and/or the concentration of citrate in the treatment solution is calculated from the concentration of chromium(III) ions in the treatment solution and the concentration of zinc ions in the treatment solution according to the formula
[image]
5. Otopina za obradu prema jednom od prethodnih zahtjeva, naznačena time što je koncentracija iona kroma(III) u otopini za obradu između 0,2 i 27 g/l, koncentracija iona cinka u otopini za obradu između 0,5 i 66 g/l i/ili ona citrata u otopini za obradu između 1,1 i 154 g/l.5. Treatment solution according to one of the preceding claims, characterized in that the concentration of chromium(III) ions in the treatment solution is between 0.2 and 27 g/l, the concentration of zinc ions in the treatment solution is between 0.5 and 66 g/l l and/or that of citrate in the treatment solution between 1.1 and 154 g/l.
6. Otopina za obradu prema jednom od prethodnih zahtjeva, naznačena time što otopina za obradu sadrži najmanje jedan surfaktant.6. Treatment solution according to one of the preceding claims, characterized in that the treatment solution contains at least one surfactant.
7. Otopina za obradu prema jednom od prethodnih zahtjeva, naznačena time što otopina za obradu sadrži najmanje jedan aminofosfonat i ukupna koncentracija aminofosfonata je između 0,05 i 8 g/l, poželjno između 0,1 i 5 g/l, posebno poželjno između 0,3 i 3 g/l i posebno poželjno između 0,4 i 1,5.7. Treatment solution according to one of the preceding claims, characterized in that the treatment solution contains at least one aminophosphonate and the total aminophosphonate concentration is between 0.05 and 8 g/l, preferably between 0.1 and 5 g/l, particularly preferably between 0.3 and 3 g/l and especially preferably between 0.4 and 1.5.
8. Otopina za obradu prema jednom od prethodnih zahtjeva, naznačena time što otopina za obradu sadrži manje od 10 g/l silana.8. The processing solution according to one of the preceding claims, characterized in that the processing solution contains less than 10 g/l of silane.
9. Otopina za obradu prema jednom od prethodnih zahtjeva, naznačena time što je sloj antikorozivnog premaznog sloja tribološki funkcionalni premazni sloj i otopina za obradu sadrži, osim toga, 0,1 do 50 mas. %, poželjno 1 do 30 mas. %, i posebno poželjno 3 do 15 mas. %, najmanje jednog maziva.9. The processing solution according to one of the preceding claims, characterized in that the anticorrosive coating layer is a tribologically functional coating layer and the processing solution contains, in addition, 0.1 to 50 wt. %, preferably 1 to 30 wt. %, and especially preferably 3 to 15 wt. %, at least one lubricant.
10. Otopina za obradu prema jednom od prethodnih zahtjeva, naznačena time što se otopina za obradu proizvodi dodavanjem vodene bazne otopine pH vrijednosti od 7,5 do 11,5 za brtvila ili završne premaze.10. Treatment solution according to one of the preceding claims, characterized in that the treatment solution is produced by adding an aqueous base solution with a pH value of 7.5 to 11.5 for sealants or topcoats.
11. Koncentrat otopine za obradu za postupak za proizvodnju antikorozivnog premaznog sloja na metalnoj površini, u kojoj se površina koja se obrađuje dovodi u kontakt s otopinom za obradu koja se može dobiti uklanjanjem barem dijela otapala iz otopine za obradu prema jednom od zahtjeva 1 do 10.11. Processing solution concentrate for a process for producing an anticorrosive coating layer on a metal surface, in which the surface to be processed is brought into contact with a processing solution that can be obtained by removing at least part of the solvent from the processing solution according to one of claims 1 to 10 .
12. Postupak za proizvodnju antikorozivnog premaznog sloja na metalnoj površini, u kojem se površina koja se obrađuje dovodi u kontakt s otopinom za obradu prema jednom od zahtjeva 1 do 10.12. A method for producing an anti-corrosive coating layer on a metal surface, in which the surface to be treated is brought into contact with a treatment solution according to one of claims 1 to 10.
13. Uporaba otopine za obradu prema jednom od zahtjeva 1 do 10 za proizvodnju antikorozivnog premaznog sloja na metalnoj površini.13. Use of a treatment solution according to one of claims 1 to 10 for the production of an anti-corrosive coating layer on a metal surface.