Resin composition and electronic component device
US-2020102454-A1 · Apr 2, 2020 · US
Coating composition for electrical steel sheet, adhesive surface-coated electrical steel sheet and laminated core
US12371599B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12371599-B2 |
| Application number | US-202118010548-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 17, 2021 |
| Priority date | Jun 17, 2020 |
| Publication date | Jul 29, 2025 |
| Grant date | Jul 29, 2025 |
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- Title
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Abstract
Official abstract text for this publication.
This coating composition for an electrical steel sheet contains an epoxy resin, a phenolic curing agent (A) and one or more amine-based curing agents (B) selected from the group consisting of an aromatic amine and dicyandiamide, the amount of the phenolic curing agent (A) is 1 to 40 parts by mass with respect to 100 parts by mass of the epoxy resin, and the amount of the amine-based curing agents (B) is 0.5 to 5 parts by mass with respect to 100 parts by mass of the epoxy resin.
First claim
Opening claim text (preview).
What is claimed is: 1. A coating composition for an electrical steel sheet comprising: an epoxy resin; a phenolic curing agent (A); and amine-based curing agents (B) which is an aromatic amine, wherein an amount of the phenolic curing agent (A) is 1 to 40 parts by mass with respect to 100 parts by mass of the epoxy resin, and an amount of the amine-based curing agents (B) is 0.5 to 5 parts by mass with respect to 100 parts by mass of the epoxy resin. 2. The coating composition for an electrical steel sheet according to claim 1 , wherein a mass ratio represented by [the amount of the phenolic curing agent (A)]/[the amount of the amine-based curing agents (B)] is 1 to 20. 3. An adhesive surface-coated electrical steel sheet comprising: an insulating coating containing the coating composition for an electrical steel sheet according to claim 1 on a surface, wherein a thickness is 0.65 mm or less. 4. An adhesive surface-coated electrical steel sheet comprising: an insulating coating containing the coating composition for an electrical steel sheet according to claim 2 on a surface, wherein a thickness is 0.65 mm or less. 5. A laminated core formed by laminating two or more adhesive surface-coated electrical steel sheets according to claim 3 . 6. A laminated core formed by laminating two or more adhesive surface-coated electrical steel sheets according to claim 4 .
Assignees
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Classifications
with insulating coating · CPC title
Presence of epoxy resin · CPC title
in the pretreated surface to be joined · CPC title
organic · CPC title
Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers · CPC title
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- What does patent US12371599B2 cover?
- This coating composition for an electrical steel sheet contains an epoxy resin, a phenolic curing agent (A) and one or more amine-based curing agents (B) selected from the group consisting of an aromatic amine and dicyandiamide, the amount of the phenolic curing agent (A) is 1 to 40 parts by mass with respect to 100 parts by mass of the epoxy resin, and the amount of the amine-based curing agen…
- Who is the assignee on this patent?
- Nippon Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C09J163/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 29 2025 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 9 related publications on this page (citations in our corpus or others sharing the same primary CPC).