3, 6-bis[4-(alkyloxy) phenyloxy] pyromellitic dianhydrides and p

Details 3, 6-bis[4-(alkyloxy) phenyloxy] pyromellitic dianhydrides and p 3, 6-bis[4-(alkyloxy) phenyloxy] pyromellitic dianhydrides and p

1999-03-24

2000-04-04

Kight, John

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D49302

Patent

active

060463422

ABSTRACT:
The present invention provides pyromellitic dianhydride derivatives represented as formula I: ##STR1## wherein, R is C.sub.1-24 alkyl.
The pyromellitic dianhydride derivatives of the invention can be used as monomers for the synthesis of polyimides, ladder poly(imidazopyrrolone)s, crosslinked polyamides and polyesters. The present invention also provides a novel process for preparing the pyromellitic dianhydride derivatives as formula I.

REFERENCES:
patent: 3431240 (1969-03-01), Vogel et al.
D. Brandelik, "Polymides Baed on 3,6-Diphenoxypyromellitic Dianhydride", Poymer Preprints, 28(1), pp. 888-889 (1987).
F.W. Harris and S. Hsu, "Synthesis and Characterization of Polymides Based on 3,6-Diphenylpyromellitic Dianhydride", High Performance Polymers, 1(1), pp. 3-16 (1989).
Kyung Hoon Lee and Jin Chul Jung, "Synthesis and Characterization of Polymides from 1,4-bis[4-(n-alkyloxy)phenyloxy]pyromellitic dianhydrides and 4,4.sup., -oxydianiline", Polymer Bulletin, 40(4);pp. 407-414 (1998).
Kyung Hoon Lee and Jin Chul Jung, "Synthesis and Characterization of Polymides from 3,6-Bis[4-(n-alkyloxy)phenyloxy]Pyromellitic Dianhydrides and 4,4.sup., -Oxydianiline", Abstracts, presented at the Polymer Society of Korea, Apr. 10-11, 1998.
Kyung Hoon Lee and Jin Chul Jung, "Synthesis of Novel Polyimides Having 4-(n-Alkyloxy)phenyloxy Side Chains", Abstracts, presented at the Polymer Society of Korea, Oct. 16-17, 1998.
Tohru Matsurura et al., "Polyimides Derived from 2,2.sup., -Bis(trifluoromethyl)-4,4.sup., -diaminobiphenyl. 2. Synthesis and Characterization of Polyimides Prepared from Fluorinated Benzenetetracarboxylic Dianhydrides", Macromolecules, 25(13), pp. 3540-3545 (1992).

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