Organo-soluble polyimides from substituted dianhydrides

Details Organo-soluble polyimides from substituted dianhydrides Organo-soluble polyimides from substituted dianhydrides

1994-04-21

1995-03-07

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528126, 528128, 528172, 528173, 528174, 528176, 528188, 528220, 528229, 528350, 528351, 562465, 562466, C08G 6926

Patent

active

053959183

ABSTRACT:
The invention describes new biphenyl dianhydrides, and new polyimides and copolyimides made from the dianhydrides. The synthesized polyimides exhibit significantly enhanced solubility when the biphenyl dianhydrides are substituted, particularly at the 2 and 2' positions on the phenyl rings.

REFERENCES:
patent: 4239880 (1980-12-01), Darms
patent: 4271288 (1981-06-01), Woo
patent: 4421929 (1983-12-01), Woo
patent: 4485140 (1984-11-01), Gannett et al.
patent: 5071997 (1991-12-01), Harris
patent: 5147966 (1992-09-01), St. Clair et al.
patent: 5175242 (1992-12-01), Harris
patent: 5178964 (1993-01-01), Scola et al.
Mark W. Beltz "Synthesis of Aromatic Polyimides Containing Oxyalkylene Linkages" 1987-1988.

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