Process for preparing polyesterimide from bis(hydroxyphthalimide

Details Process for preparing polyesterimide from bis(hydroxyphthalimide Process for preparing polyesterimide from bis(hydroxyphthalimide

1988-04-22

1989-08-08

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528126, 528128, 528176, 528179, 528182, 528190, C08G 6314, C08G 7310

Patent

active

048553905

ABSTRACT:
The present invention provides a bis(hydroxyphthalimide) prepared by reacting 4-hydroxyphthalic anhydride and an organic diamine in the presence of an organic solvent under heating. The bis(hydroxyphthalimide) has two intramolecular imide rings and active hydrogens, and is thus polymerizable to form a variety of polycondensation products each having imide rings by condensation. The bis(hydroxyphthalimide) is also reacted with a dicarboxylic acid dihalide to form a polyesterimide, through condensation, which is excellent in transparency and heat resisting property.

REFERENCES:
patent: 3920697 (1975-11-01), Takekoshi et al.
patent: 4535170 (1985-08-01), Sonnenberg
patent: 4550208 (1985-10-01), Disteldorf et al.
patent: 4769475 (1988-09-01), Sasaki et al.
B. K. Mandal and S. Maiti, J. Polym. Sci. Polymer Letters Edition, vol. 23, 317-322 (1985).

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