Low melt viscosity imide oligomers and polyimides therefrom

Details Low melt viscosity imide oligomers and polyimides therefrom Low melt viscosity imide oligomers and polyimides therefrom

2005-09-22

2009-10-20

Woodward, Ana L (Department: 1796)

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

Synthetic resins

From carboxylic acid or derivative thereof

C528S345000, C528S347000, C528S348000, C528S350000, C528S353000

Reexamination Certificate

active

07605223

ABSTRACT:
The present invention relates to novel imide oligomer compositions, polyimides formed therefrom, and methods for making and using the same. In particular, the invention relates to novel polyimide oligomers comprising 3,3′,4,4′-benzophenone tetracarboxylic dianhydride (BTDA), 2-(3,4-dicarboxy phenyl)-1-phenylacetylene anhydride (PE), and a mixture of 1,3-diaminobenzene and 4,4′-(1,3-phenylenediisopropylidene) bisaniline. The polyimide oligomers demonstrate low melt viscosity (these resins are melt processable) while retaining exceptional thermo-oxidative stability, high glass transition temperature, and good mechanical properties in the cured state.

REFERENCES:
patent: 5138028 (1992-08-01), Paul et al.
patent: 5493002 (1996-02-01), McGrath et al.
patent: 5567800 (1996-10-01), Hergenrother et al.
patent: 5681967 (1997-10-01), Hergenrother et al.
patent: 5760168 (1998-06-01), Hergenrother et al.

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