Aqueous lubricant composition for metalworking
US-2024309286-A1 · Sep 19, 2024 · US
Composition for solid coating formation and tubular threaded joint
US10150887B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10150887-B2 |
| Application number | US-201314426924-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 10, 2013 |
| Priority date | Sep 12, 2012 |
| Publication date | Dec 11, 2018 |
| Grant date | Dec 11, 2018 |
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- Title
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Abstract
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A composition for solid coating formation, includes a mixed solvent including water and a dipolar aprotic solvent, a powdery organic resin which is partially soluble at least in the dipolar aprotic solvent. The powdery organic resin is dissolved or dispersed in the mixed solvent.
First claim
Opening claim text (preview).
The invention claimed is: 1. A tubular threaded joint comprising a pin and a box each of which is provided with a contact surface comprising a threaded portion and an unthreaded metal contact portion, wherein the contact surface of at least one member of the pin and the box has a solid coating formed by applying a composition for solid coating formation to the contact surface, wherein the composition comprises a mixed solvent consisting of water and a dipolar aprotic solvent, and a powdery organic resin which is partially soluble at least in the dipolar aprotic solvent, wherein the powdery organic resin is dissolved or dispersed in the mixed solvent, and wherein the dipolar aprotic solvent is one or more solvents selected from the group consisting of dimethylsulfoxide and γ-butyrolactone. 2. The tubular threaded joint according to claim 1 , wherein the solid coating has: a first layer which does not contain lubricating particles; and a second layer formed thereon, which contains lubricating particles. 3. The tubular threaded joint according to claim 2 , wherein a thickness of the solid coating is 5 μm to 100 μm. 4. The tubular threaded joint according to claim 1 , wherein a thickness of the solid coating is 5 μm to 100 μm. 5. A tubular threaded joint comprising a pin and a box each of which is provided with a contact surface comprising a threaded portion and an unthreaded metal contact portion, wherein the contact surface of at least one member of the pin and the box has a solid coating formed by applying a composition for solid coating formation to the contact surface, wherein the composition comprises a mixed solvent consisting of water and a dipolar aprotic solvent, a powdery organic resin which is partially soluble at least in the dipolar aprotic solvent, and lubricating particles, wherein the powdery organic resin is dissolved or dispersed in the mixed solvent, and wherein the dipolar aprotic solvent is one or more solvents selected from the group consisting of dimethylsulfoxide and γ-butyrolactone. 6. A tubular threaded joint comprising a pin and a box each of which is provided with a contact surface comprising a threaded portion and an unthreaded metal contact portion, wherein the contact surface of at least one member of the pin and the box has a solid coating formed by applying a composition for solid coating formation to the contact surface, wherein the composition comprises a mixed solvent consisting of water and a dipolar aprotic solvent, and a powdery organic resin which is partially soluble at least in the dipolar aprotic solvent, wherein the powdery organic resin is dissolved or dispersed in the mixed solvent, wherein the dipolar aprotic solvent is one or more solvents selected from the group consisting of dimethylsulfoxide and γ-butyrolactone, and wherein the powdery organic resin is one or more resins selected from the group consisting of a polyamide-imide resin, an epoxy resin, and a fluororesin.
Assignees
Inventors
Classifications
dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating · CPC title
with additional sealings · CPC title
for screw-threaded joints · CPC title
Compounds containing sulfur bound to oxygen · CPC title
Carbon · CPC title
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Frequently asked questions
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- What does patent US10150887B2 cover?
- A composition for solid coating formation, includes a mixed solvent including water and a dipolar aprotic solvent, a powdery organic resin which is partially soluble at least in the dipolar aprotic solvent. The powdery organic resin is dissolved or dispersed in the mixed solvent.
- Who is the assignee on this patent?
- Nippon Steel & Sumitomo Metal Corp, Vallourec Oil & Gas France
- What technology area does this patent fall under?
- Primary CPC classification C10M173/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 11 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).