Polymer compound, precursor for the same and thin...

Details Polymer compound, precursor for the same and thin... Polymer compound, precursor for the same and thin...

2006-08-08

2006-08-08

Hightower, P. Hampton (Department: 1711)

Stock material or miscellaneous articles

Composite

Of polyimide

C428S411100, C428S457000, C428S458000, C528S170000, C528S353000

Reexamination Certificate

active

07087311

ABSTRACT:
Provided are polyimide and a thin film thereof which have a three-dimensional structure and therefore are excellent in a mechanical strength and a heat resistance as compared with those of conventional linear polyimide. The polyimide is obtained from a salt of multifunctional amine represented by Formula (1):(wherein A represents a tetravalent organic group, and n represents an integer of 0 to 3) and tetracarboxylic diester represented by Formula (2):(wherein B represents a tetravalent organic group having 1 to 20 carbon atoms, and R1and R2each represent independently an alkyl group having 1 to 5 carbon atoms).

REFERENCES:
patent: 4543295 (1985-09-01), St. Clair et al.
patent: 5338826 (1994-08-01), St. Clair et al.
patent: 6472080 (2002-10-01), Inagaki et al.
patent: 6949618 (2005-09-01), Kato
patent: 2006/0019109 (2006-01-01), Kato

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