Film suitable for capacitor use
US-2024161979-A1 · May 16, 2024 · US
Electrically insulating oil composition, and oil-impregnated electrical equipment
US10373758B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10373758-B2 |
| Application number | US-201414917418-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 5, 2014 |
| Priority date | Sep 12, 2013 |
| Publication date | Aug 6, 2019 |
| Grant date | Aug 6, 2019 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
It is an object to provide an electrically insulating oil composition that can maintain dielectric breakdown voltage high in a wide temperature range of −50° C. to 65° C., and can suppress a decrease in dielectric breakdown voltage even in the case of use at high temperature for a long time, and there is provided an electrically insulating oil composition comprising 1,1-diphenylethane and benzyltoluene, wherein the proportion of a para isomer in the benzyltoluene is 45% by mass or more based on a total amount of the benzyltoluene.
First claim
Opening claim text (preview).
The invention claimed is: 1. An electrically insulating oil composition comprising: 1,1-diphenylethane; and benzyltoluene, wherein the proportion of a para isomer in the benzyltoluene is 50% by mass or more based on a total amount of the benzyltoluene, such that a decrease in dielectric breakdown voltage of the electrically insulating oil composition is suppressed during its use between 50° C. and 80° C. for 1,000 hours or more. 2. The electrically insulating oil composition according to claim 1 , wherein a total content of the 1,1-diphenylethane and the benzyltoluene is 80% by mass or more based on a total amount of the electrically insulating oil composition. 3. The electrically insulating oil composition according to claim 1 , further comprising 0.01 to 1.0% by mass of an epoxy compound based on the total amount of the electrically insulating oil composition. 4. The electrically insulating oil composition according to claim 1 , wherein a chlorine component is 50 ppm by mass or less. 5. Oil-impregnated electrical equipment impregnated with the electrically insulating oil composition according to claim 1 . 6. The oil-impregnated electrical equipment according to claim 5 , being an oil-impregnated capacitor using a polypropylene film at least in part as a dielectric.
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10373758B2 cover?
- It is an object to provide an electrically insulating oil composition that can maintain dielectric breakdown voltage high in a wide temperature range of −50° C. to 65° C., and can suppress a decrease in dielectric breakdown voltage even in the case of use at high temperature for a long time, and there is provided an electrically insulating oil composition comprising 1,1-diphenylethane and benzy…
- Who is the assignee on this patent?
- Jxtg Nippon Oil & Energy Corp
- What technology area does this patent fall under?
- Primary CPC classification H01G4/221. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 06 2019 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).