Composition for a stainless coating, stainless member including the stainless coating, and method of manufacturing same

Patent metadata

Field	Value
Publication number	US-11767434-B2
Application number	US-202017122268-A
Country	US
Kind code	B2
Filing date	Dec 15, 2020
Priority date	Jan 16, 2020
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

A composition for a stainless coating according to the present disclosure includes a sodium silicate, a lithium silicate, a polysiloxane, ethanol, and a residual solvent. The composition may be uniformly and smoothly coated on a curved, stainless steel surface, cleaning may be easier, and yellowing may be reduced or prevented.

First claim

What is claimed is:

1. A composition for a stainless coating, comprising:
13.5-14.5 weight percent (wt %) of a sodium silicate;
11.2-12.5 wt % of a lithium silicate;
0.45-0.55 wt % of a polysiloxane;
1.2-1.6 wt % of an ethanol; and
a remaining weight percentage including a residual solvent.

2. The composition of claim 1 , wherein the residual solvent is distilled water.

3. The composition of claim 1 , wherein the residual solvent is included in an amount of 50-90 wt %.

4. The composition of claim 1 , wherein a mole ratio of silicon dioxide to sodium oxide (SiO 2 /Na 2 O) of the sodium silicate is in a range of 3.9 to 4.1, and the mole ratio of silicon dioxide to lithium oxide (SiO 2 /Li 2 O) of the lithium silicate is in a range of 4.5 to 5.0.

5. A stainless steel object coated with a stainless coating having the composition of claim 1 , wherein the stainless steel object is made of stainless steel, coated in the stainless coating having the composition of claim 1 , and the stainless coating is hardened.

6. A coating layer, comprising:
a composition including a residual solvent mixed with sodium silicate, lithium silicate, a polysiloxane, and ethanol, wherein:
the sodium silicate is included in an amount of 13.5-14.5 wt %;
the lithium silicate is included in an amount of 11.2-12.5 wt %;
the polysiloxane is included in an amount of 0.45-0.55 wt %; and
the ethanol is included in an amount of 1.2-1.6 wt %.

7. The coating layer of claim 6 , wherein, after the coating layer is sprayed onto the metallic surface and hardened, a roughness is about 20.1 nm.

Assignees

• Lg Electronics Inc

Inventors

• Kim Soyoon
• Kim Dong Jin
• Kim Juwon
• Jun Hyunwoo
• Yang Jaekyung

Classifications

• C09D1/04 Primary

  with organic additives · CPC title

• C09D7/65

  macromolecular (C09D7/41-C09D7/48 take precedence) · CPC title

• C23C22/62

  Treatment of iron or alloys based thereon · CPC title

• C23C22/76

  Applying the liquid by spraying · CPC title

• C23C30/00

  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) · CPC title