Patent ID: 11891474
Assignee: TAIYO HOLDINGS CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 0:
1. A curable resin composition, comprising:
an epoxy resin;
an inorganic filler:
a curing accelerator; and
a compound having an active ester group,
wherein the curing accelerator includes at least one selected from the group consisting of an imidazole, an imidazole derivative, and an amine, a ratio of the total amount of epoxy groups in the epoxy resin/the total amount of active ester groups in the compound having an active ester group in the curable resin composition is in a range of 0.2 to 0.6, the epoxy resin includes a biphenyl aralkyl type epoxy resin and at least one compound selected from the group consisting of bisphenol A type epoxy resin and bisphenol F type epoxy resin, the compound having an active ester group is selected from the group consisting of a compound of formula (1),, , where each X1, independently from each other, is a group having a benzene ring or a naphthalene ring, k is 0 or 1, and n as an average number of repeating units is in a range of 0.25 to 1.5, and a compound having a structural moiety of formula (2),, , where the compound having the structural moiety of the formula (2) has a structure with monovalent aryloxy groups at both ends thereof, m is an integer in a range of 1 to 6, each n, independently from each other, is an integer in a range of 1 to 5, and each q, independently from each other, is an integer in a range of 1 to 6, and each X2, independently from each other, is a group of formula (3),, , where each k, independently from each other, is an integer in a range of 1 to 5, or a group of formula (4),, , where Y is a group of the formula (3), each k, independently from each other, is an integer in a range of 1 to 5, and each t, independently from each other, is an integer in a range of 0 to 5.