Sumitomo Bakelite Company Limited

Yohko Sano

Kazuyoshi Fujita

Sumitoshi Asakuma

Mihoko Matsutani

A polymer and composition useful in forming an insulating film provided with a low permittivity, a high heat resistance, and a high mechanical strength and an insulating film obtained from these and an electronic device having the same are provided. The polymer for forming an insulating film according to the present invention is characterized by being obtained by polymerizing a reactive compound represented by Formula (1). The insulating film according to the present invention is formed using a composition for forming an insulating film including that polymer, has molecular spaces having an average space size of 0.7 nm to 5 nm, and has a permittivity of 2.3 or less. The electronic device according to the present invention has the insulating film. (wherein R, R, and Rare the same or different from each other and respectively represent an organic group having a ring structure; X and Y are the same or different from each other and respectively represent an aromatic organic group having a reactive group; and n represents 0 or 1).

Polymer for forming insulating film, composition for forming insulating film, insulating film, and electronic device having same

An organic insulating material includes a prepolymer of a cage structure compound having a polymerizable unsaturated bond-containing group and a cage structure with an adamantane structure as the minimal unit. The prepolymer has a number-average molecular weight of between 2,000 and 500,000 based on polystyrene and measured by gel permeation chromatography. The prepolymer includes unsaturated bonds produced by reaction between the polymerizable unsaturated bonds and the unreacted polymerizable unsaturated bonds. The prepolymer has a residue rate of unreacted polymerizable unsaturated bonds of between 20% and 80%.

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Tokyo, Japan

Yohko Sano