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US 2026/0258197 A1Published application
Polyphenylene ether, curable composition containing polyphenylene ether, dry film, prepeg, cured product, and electronic component
AssigneeTaiyo Holdings Co., Ltd.
InventorsShoya SEKIGUCHI, Shoko MISHIMA, Yuki SUGITA, Nobuhiro ISHIKAWA
Life of this patent
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Abstract
A polyphenylene ether having a branched structure, the polyphenylene ether having low-dielectric characteristics and excellent solvent solubility, being easily controlled in molecular weight, and being suitable for mass production. The polyphenylene ether is obtained from raw material phenols, in which the raw material phenols include a phenol having a hydrogen atom at the ortho position and the para position and a phenol (X) represented by formula (1)
Claims12
A polyphenylene ether obtained from raw material phenols, wherein
- the raw material phenols include a first phenol having a hydrogen atom at the ortho position and the para position and a second phenol represented by the formula (1):
- wherein, in formula (1), RA, RC, and RE are each independently a functional group having 1 to 10 carbon atoms, RB and RD are each independently hydrogen or a functional group having 1 to 10 carbon atoms, and one or more of RA to RE are a functional group containing an unsaturated carbon bond.
Dependencies are inferred from the claim text.