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Composition and Process for Treating Metals Cross-reference to Related Applications
| Content Provider | Semantic Scholar |
|---|---|
| Author | Oltmans, Andrew L. |
| Copyright Year | 2017 |
| Abstract | (US) Primary Examiner Andrew L. Oltmans (74) Attorney, Agent, or Firm-Stephen D. Harper; Mary (73) Assignee: Henkel Corporation, Gulph Mills, PA K. Cameron (US) (57) ABSTRACT (*) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 A chromium free conversion coating at least equivalent in U.S.C. 154(b) by 0 days. corrosion protective quality to conventional chromate CO version coatings can be formed on metals, particularly cold (21) Appl. No.: 10/111,177 rolled Steel, by a dry-in-place acqueous acidic liquid that 1.-1. preferably has a pH value between 0.5 and 5.0 and com (22) PCT Filed: Oct. 24, 2000 prises: (A) “fluorometallate' anions consisting of (i) at least (86) PCT No.: PCT/US00/29266 four fluorine atoms, (ii) at least one atom of an element Selected from the group consisting of titanium, Zirconium, S371 (c)(1), hafnium, Silicon, aluminum, and boron, and, optionally, one (2), (4) Date: Apr. 19, 2002 or more of (iii) ionizable hydrogen atoms and (iv) oxygen (87) PCT Pub. No.: WO01/32952 atoms; (B) a component of divalent or tetravalent cations of elements Selected from the group consisting of cobalt, PCT Pub. Date: May 10, 2001 magnesium, manganese, Zinc, nickel, tin, copper, Zirconium, O O iron, and Strontium in Such an amount that the ratio of the Related U.S. Application Data total number of cations of this component to the number of (60) Provisional application No. 60/162,455, filed on Oct. 29, anions in component (A) is at least about 1:5 but not greater 1999. than about 3:1; (C) a component Selected from the group (51) Int. Cl." ................................................ C23C 22/00 consisting of phosphorus-containing inorganic oxyanions (52) U.S. Cl. ....................... 148,251; 148/247; 148/259; and phosphonate anions; and (D) a component of polymers 148/260 of hydroxy Styrene, modified by Substitution on the aromatic (58) Field of Search ................................. 148,251, 247, rings of the polymers of substituted aminomethyl moieties, 148/259, 260 in which the substituents (other than the carbon atom that is s directly bonded to an aromatic ring in the polymer) on the (56) References Cited amino nitrogen atom jointly contain at least two carbon atoms and at least one hydroxy moiety but neither of these U.S. PATENT DOCUMENTS Substituents on the amino nitrogen atom individually con |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://patentimages.storage.googleapis.com/55/64/0f/416baac419fa4d/US6758916.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
