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Preparation and properties of aromatic polyimides from 2,2′‐bis(p‐aminophenoxy)biphenyl or 2,2′‐bis)p‐aminophenoxy)‐1,1′‐binaphthyl and aromatic tetracarboxylic dianhydrides
New aromatic polyimides containing a biphenyl-2,2′-diyl or 1,1′-binaphthyl-2,2′-diyl unit were prepared by a conventional two-step method starting from 2,2′-bis(p-aminophenoxy) biphenyl or… Expand
Preparation and properties of new soluble aromatic polyimides from 2,2′‐bis(3,4‐dicarboxyphenoxy)biphenyl dianhydride and aromatic diamines
A new aromatic tetracarboxylic dianhydride having a crank and twisted noncoplannar structure, 2,29-bis(3,4-dicarboxyphenoxy)biphenyl dianhydride, was syn- thesized by the reaction of… Expand
Preparation and Properties of New Soluble Aromatic Polyamides from 2,2*-Bis(4-aminophenyl)biphenyl and Aromatic Dicarboxylic Acids
New biphenyl-2,29-diyl-containing aromatic polyamides having a crank and twisted noncoplannar structure were synthesized in inherent viscosities of 0.39 -1.42 dL/g by the low-temperature solution… Expand