The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2026
Filed:
Jan. 25, 2022
Taiyo Holdings Co., Ltd., Saitama, JP;
Yoshikazu Daigo, Saitama, JP;
TAIYO HOLDINGS CO., LTD., Saitama, JP;
Abstract
An object of the present invention is to provide a resin composition having high electrically insulating properties, high thermally conductive properties, low elasticity, and high solder heat resistance as an electrically insulating layer for a metal-based base material to be used for electronic devices, especially for on-vehicle electronic devices, and having favorable workability during coating a body to be coated as a resin composition for an electrically insulating layer before being cured. The present invention provides a thermosetting resin composition, a cured product, and a resin-attached metal foil, each containing a rubber-like polymer compound (A) having a glass transition temperature (Tg) of −40° C. or lower and a weight average molecular weight (Mw) in a range of 8,000 to 50,000, an epoxy resin (B), a filler (C), and a phenoxy resin (D). The present invention also provides a method for producing a metal-based substrate having any one of the thermosetting resin composition, the cured product, and the resin-attached metal foil, and a method for producing an electronic part using the metal-based substrate.