End-capped polyimide oligomers

Chemistry of carbon compounds – Miscellaneous organic carbon compounds

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562427, 260 304N, 562430, 562433, 260 312N, 562460, 562466, 260322, 562473, 562490, 260 328N, 562491, 562492, 260 332R, 562495, 525426, 260 334R, 260326C, 526259, 526262, 526263, 526285, 528125, 528126, 528128, 528170, 528172, 528185, 528187, 528226, 528229, 528322, 528351, 528352, 528353, 560 13, 560 18, 560 36, 560 45, 560 47, 560 48, C08G 7312

Patent

active

042514207

ABSTRACT:
The products of the invention are end-capped polyimide oligomers prepared from a dianhydride of an aromatic tetracarboxylic acid such as 3,3'4,4'-benzophenonetetracarboxylic acid, an aromatic triamine, and a 1-(aminoaryl)-3-hydroxy-3-methyl-1-butyne. The structure of the polyimide oligomers is shown in FIG. 3.

REFERENCES:
patent: 3845018 (1974-10-01), Bilow et al.
patent: 3864309 (1975-02-01), Bilow et al.
patent: 3879349 (1975-07-01), Bilow et al.
patent: 3998786 (1976-12-01), D'Alelio
patent: 4058505 (1977-11-01), D'Alelio
patent: 4098767 (1978-07-01), Bilow
patent: 4100138 (1978-07-01), Bilow et al.

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