Aromatic polyimine and process for preparing the same, and aromatic oligoimine used for aromatic polyimine and process for preparing the same
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United States of America Patent
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Apr 30, 1996
Grant Date -
N/A
app pub date -
Mar 24, 1995
filing date -
Jul 27, 1993
priority date (Note) -
Expired
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Abstract
What is disclosed an aromatic oligoimine having a recurring unit composed of an aromatic dialdehyde having a phenolic hydroxyl group and an aromatic diamine and a number-average degree of polymerization of 2 to 20 and a process for preparing the same, and an aromatic polyimine made by thermally dehydrating the aromatic oligoimine and a process for preparing the same.
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