Title:
SLURRY PREPARATION OF BIS(HALOPHTHALIMIDES) AND OF POLYETHER POLYMERS
Document Type and Number:
WIPO Patent Application WO2001025196
Kind Code:
A3
Abstract:
Bis(halophthalimides) such as, 3-bis[N-(4-chlorophthalimido)]benzene are prepared in slurry in an organic liquid such as o-dichlorobenzene or anisole, by a reaction at a temperature of at least 150 DEG C between at least one diamino compound, preferably an aromatic diamine such as m- or p-phenylenediamine, and at least one halophthalic anhydride such as 4-chlorophthalic anhydride, in the presence of an imidization catalyst such as sodium phenylphosphinate. The solids content of the reaction mixture is at least about 5 % and preferably at least about 12 % by weight. The product slurry may be employed directly in the preparation of polyetherimides, and similar slurries may be employed to prepare other polyether polymers.
Inventors:
KHOURI FARID FOUAD
KAILASAM GANESH
CARINGI JOSEPH JOHN
PHELPS PETER DAVID
KAILASAM GANESH
CARINGI JOSEPH JOHN
PHELPS PETER DAVID
Application Number:
PCT/US2000/027183
Publication Date:
October 18, 2001
Filing Date:
October 02, 2000
Export Citation:
Assignee:
GEN ELECTRIC (US)
International Classes:
C07D209/48; C08G65/40; C08G73/12; C08G75/23; (IPC1-7): C07D209/48; C08G65/40
Foreign References:
| US3787364A | 1974-01-22 | |||
| US5514813A | 1996-05-07 | |||
| US5229482A | 1993-07-20 |
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