Patent ID: 11873398
Assignee: SEKISUI CHEMICAL CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B  H | IPC B  C  H

Claim 0:
1. An interlayer insulating material capable of being used in a multilayer printed wiring board, comprising:
an epoxy compound;
a curing agent;
a silica;
a polyimide; and
optionally, a solvent,
the epoxy compound containing an epoxy compound having a biphenyl skeleton,
the curing agent containing an active ester compounds,
the polyimide being a reactant of a tetracarboxylic anhydride and a dimer acid diamine, the polyimide having an amino group at the terminal thereof or an acid anhydride group at the terminal thereof,
a content of the silica being 60% by weight or more and 90% by weight or less in 100% by weight of components excluding any solvent in the interlayer insulating material,
a total content of the epoxy compound and the curing agent being 65% by weight or more in 100% by weight of components excluding the silica and any solvent in the interlayer insulating material, and
a content of the epoxy compound in 100% by weight of components excluding the silica and any solvent in the interlayer insulating material being larger than a content of the polyimide in 100% by weight of components excluding the silica and any solvent in the interlayer insulating material.