Vinyl end-capped polyimide oligomers

Details Vinyl end-capped polyimide oligomers Vinyl end-capped polyimide oligomers

1980-08-25

1982-05-04

Schain, Howard E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

548423, 548433, 528225, 548461, 528229, 528322, 528342, 528352, 528353, 560 11, 560 18, 560 52, 560 66, 560 76, 528471, 528435, 524111, 524280, 524360, 524378, 524391, 2605011, 2605012, 26050121, 525435, 525426, 528125, 528126, 528128, 528170, 528172, 528205, 528208, 528220, 252182, C08G 7310, C08G 7312

Patent

active

RE0309222

ABSTRACT:
The products of the invention are vinyl end-capped oligomers which are prepared from 2,4-bis (p-aminobenzyl) aniline and a vinyl substituted aromatic monoamine, the principal component of which is the compound whose structure is shown in FIG. 3. The products are prepared from either of two (2) precursors. The first precursor is a compound whose structure is shown in FIG. 2 and which is prepared from 2,4-bis (p-aminobenzyl) aniline, a dianhydride of an aromatic tetracarboxylic acid such as 3,3'4,4'-benzophenonetetracarboxylic acid (BTDA) and a vinyl substituted aromatic monoamine, such as 3-aminophenyl-ethylene (APE). The second precursor is a complex amine salt having the structure shown in FIG. 6 and which is prepared from 2,4-bis-(p-aminobenzyl) aniline, a dialkyl ester of BTDA and APE.

REFERENCES:
patent: 3879349 (1975-04-01), Bilow
patent: 4055543 (1977-10-01), D'Alelio
patent: 4097456 (1978-06-01), Barie, Jr.
patent: 4251419 (1981-02-01), Heilman et al.
patent: 4251420 (1981-02-01), Antonoplos et al.

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