# US 11,299,639 B2 · Zinc-based plated steel material having excellent sealer adhesion

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,299,639 B2
- Document ID: US11299639B2
- Status: Granted
- Kind: B2
- Application number: 16/471,889
- Filed: 2017-12-22
- Published: 2019-10-17
- Granted: 2022-04-12
- Earliest claimed: 2016-12-23
- Assignees: Posco
- Applicants: Posco
- Inventors: Yeon-Ho Kim; Yong-Woon Kim; Yung-Keun Kim; Yon-Kyun Song
- Web page: https://patentgrep.com/patent/US11299639B2

## CPC

- C09D 7/61: inorganic
- B05D 7/14: to metal, e.g. car bodies (involving a chemical reaction between the metal and the coating C23)
- B32B 15/013: {one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium}
- B32B 15/04: comprising metal as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)}
- B32B 15/043: {of metal (B32B15/01 takes precedence)}
- B32B 15/08: of synthetic resin
- B32B 15/18: comprising iron or steel {(B32B15/011, B32B15/012 and B32B15/013 take precedence)}
- B32B 15/20: comprising aluminium or copper {(B32B15/016 and B32B15/017 take precedence)}
- C08K 3/22: of metals
- C09D 171/02: Polyalkylene oxides
- C23C 2/06: Zinc or cadmium or alloys based thereon
- C23C 2/26: After-treatment (C23C2/14 takes precedence)
- C23C 2/40: Plates; Strips
- C23C 4/11: Oxides
- C23C 14/08: Oxides (C23C14/10 takes precedence)
- C23C 14/16: on metallic substrates or on substrates of boron or silicon
- C23C 14/58: After-treatment
- C23C 16/40: Oxides
- C23C 16/403: {of aluminium, magnesium or beryllium}
- C23C 16/405: {of refractory metals or yttrium}
- C23C 16/406: {of iron group metals}
- C23C 28/00: Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C 28/30: {Coatings combining at least one metallic layer and at least one inorganic non-metallic layer}
- C23C 28/321: {with at least one metal alloy layer}
- C23C 28/3225: {with at least one zinc-based layer}
- C23C 28/34: {including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates}
- C23C 28/345: {with at least one oxide layer}
- C23C 28/3455: {with a refractory ceramic layer, e.g. refractory metal oxide, ZrO2, rare earth oxides or a thermal barrier system comprising at least one refractory oxide layer}
- C23C 30/00: Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process (C23C26/00, C23C28/00 take precedence)
- C23C 30/005: {on hard metal substrates}
- C25D 3/22: of zinc
- C25D 5/48: After-treatment of electroplated surfaces
- C08K 3/08: Metals
- C08K 3/24: Acids; Salts thereof {(C08K3/16 takes precedence)}
- C22C 18/04: with aluminium as the next major constituent
- Y10T 428/12556: Organic component
- Y10T 428/12569: Synthetic resin
- Y10T 428/1259: Oxide
- Y10T 428/12597: Noncrystalline silica or noncrystalline plural-oxide component [e.g., glass, etc.]
- Y10T 428/12604: Film [e.g., glaze, etc.]
- Y10T 428/12611: Oxide-containing component
- Y10T 428/12618: Plural oxides
- Y10T 428/1266: O, S, or organic compound in metal component
- Y10T 428/12667: Oxide of transition metal or Al
- Y10T 428/12757: Fe
- Y10T 428/12799: Next to Fe-base component [e.g., galvanized]
- Y10T 428/12806: Refractory [Group IVB, VB, or VIB] metal-base component
- Y10T 428/12958: Next to Fe-base component
- Y10T 428/12972: Containing 0.01-1.7% carbon [i.e., steel]
- Y10T 428/12979: Containing more than 10% nonferrous elements [e.g., high alloy, stainless]
- Y10T 428/27: Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
- Y10T 428/273: of coating
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Provided are a zinc-base plated steel material comprising a base steel and a zinc-based plated layer and a post-treatment film, which are sequentially formed on the base steel. The post-treatment film comprises an oxide or oxide salt of at least one group A element selected from B, Al, V, and Fe and an organic compound, wherein the content of oxygen atoms in the post-treatment film is 50 atom % or more, and wherein when the mole number of oxygen atoms forming a covalent bond with hydrogen in the post-treatment film is a and the mole number of oxygen atoms not forming the covalent bond with hydrogen is b, a/b is 0.3 or greater; and a composition for forming the post-treatment film.

## Claims

### Claim 1

A zinc-based plated steel material, comprising:
a base steel;
a zinc-based plated layer formed on the base steel; and
a post-treatment film formed on the zinc-based plated layer,
wherein the post-treatment film comprises an oxide or an oxide salt of one or more of group A elements selected from the group consisting of B, Al, V, and Fe, and an organic compound,
wherein a content of oxygen atoms in the post-treatment film is 50 atom % or higher, and
wherein, when a mole number of oxygen atoms forming a covalent bond with hydrogen in the post-treatment film is a, and a mole number of oxygen atoms which do not form a covalent bond with hydrogen in the post-treatment film is b, a/b is 0.3 or greater.

### Claim 2 (depends on 1)

The zinc-based plated steel material of claim 1, wherein the post-treatment film further comprises an oxide or an oxide salt of one or more group B elements selected from the group consisting of Mn, Mo, and W.

### Claim 3 (depends on 2)

The zinc-based plated steel material of claim 2, wherein the oxide or the oxide salt of the group A elements has at least one or more hydroxyl groups in a solution of pH 4 to 7 range, and when a mole number of the group A elements is c, and a mole number of the group B elements is d, c/d is 0.5 or greater.

### Claim 4 (depends on 3)

The zinc-based plated steel material of claim 3, wherein the c/d is 100 or less.

### Claim 5 (depends on 3)

The zinc-based plated steel material of claim 3, wherein the c/d is 2.0 or greater to 50 or less.

### Claim 6 (depends on 3)

The zinc-based plated steel material of claim 3, wherein the c/d is 5.0 or greater to 30 or less.

### Claim 7 (depends on 1)

The zinc-based plated steel material of claim 1, wherein the content of the oxygen atoms in the post-treatment film is 55 atom % or higher.

### Claim 8 (depends on 1)

The zinc-based plated steel material of claim 1, wherein the content of the oxygen atoms in the post-treatment film is 60 atom % or higher.

### Claim 9 (depends on 1)

The zinc-based plated steel material of claim 1, wherein the a/b is 10.0 or less.

### Claim 10 (depends on 1)

The zinc-based plated steel material of claim 1, wherein the a/b is 1.0 or greater to 9.0 or less.

### Claim 11 (depends on 1)

The zinc-based plated steel material of claim 1, wherein the a/b is 2.0 or greater to 8.0 or less.

### Claim 12 (depends on 1)

The zinc-based plated steel material of claim 1, wherein the oxide or the oxide salt of the group A elements has at least one or more hydroxyl groups in a solution of pH 4 to 7 range.

### Claim 13 (depends on 1)

The zinc-based plated steel material of claim 1, wherein the organic compound is included in an amount of 5 parts by weight to 30 parts by weight based on 100 parts by weight of the post-treatment film.

### Claim 14 (depends on 1)

The zinc-based plated steel material of claim 1, wherein the organic compound has at least one or more hydroxyl groups or carboxyl groups.

### Claim 15 (depends on 1)

The zinc-based plated steel material of claim 1, wherein the organic compound is one or more compounds selected from the group consisting of polyvinyl acetate (PVAc), polyvinyl alcohol (PVA), polyacrylic acid (PAA), polyvinyl butyral (PVB), and polyethylene glycol (PEG).

### Claim 16 (depends on 1)

The zinc-based plated steel material of claim 1, wherein an amount of coated film of the post-treatment film is 100 mg/m2 to 1000 mg/m2.