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US 6,664,425 B2Granted
Process for producing 1,3-bis(3-aminophenoxy)benzene
AssigneeMitsui Chemicals, Inc.
InventorsNaoki Tomoshige, Yasuhiro Nukii, Masaru Wada, Koju Okazaki, Hidetoshi Hayashi
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Abstract
1,3-Bis(3-aminophenoxy)benzene effective, for example, as a raw material for highly heat-resistant polyimide is produced industrially at a high yield by a reaction between 1,3-difluorobenzene and an alkali metal salt of 3-aminophenol.
Claims4
A process for producing 1,3-bis(3-aminophenoxy)benzene, which comprises reacting 1,3-difluorobenzene with an alkali metal salt of 3-aminophenol.
Dependencies are inferred from the claim text.