Polyimide materials with improved physico-chemical properties

Details Polyimide materials with improved physico-chemical properties Polyimide materials with improved physico-chemical properties

1993-01-08

1994-05-10

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528128, 528170, 528172, 528173, 528174, 528176, 528183, 528188, 528220, 528229, 528350, 4284735, C08G 7312, C08G 6926

Patent

active

053108639

ABSTRACT:
Copolyamic acids carrying -CF3 group functionalized aromatic segments in the polymer chain derived from aromatic diamines and dianhydrides with linear-rigid-planar structure interrupted by linear-rigid-noncoplanar segments structure and the corresponding copolyimides films are provided. These copolyimides have low in-plane thermal coefficient of expansion, reduced anisotropy in the optical and dielectric properties, low moisture uptake, and improved polyimide-to-polyimide adhesion.

REFERENCES:
patent: 3492270 (1970-01-01), Parish et al.
patent: 3582498 (1971-06-01), Bilow et al.
patent: 3985934 (1976-10-01), Farrissey, Jr. et al.
patent: 4063984 (1977-12-01), Critchley
patent: 4550156 (1985-10-01), Gallagher
patent: 4690999 (1987-09-01), Numata et al.
patent: 4764566 (1988-08-01), Swedo
patent: 4871833 (1989-10-01), Hupfer
patent: 5021540 (1991-06-01), Leone-Bay et al.
patent: 5071997 (1991-12-01), Harris
patent: 5115090 (1992-05-01), Sachdev et al.
Polymer Preprints, vol. 31, No. 1, 1990, ACS National Meeting, Boston, Harris et al., ". . . And Characterization of Polyimides based on 2,2.sup.1 -Bis(Trifluoromethyl)-4,4.sup.1 -Diaminobiphenyl", pp. 342-343.

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