Polyimides and copolyimides based on halo-oxydiphthalic anhydrid

Details Polyimides and copolyimides based on halo-oxydiphthalic anhydrid Polyimides and copolyimides based on halo-oxydiphthalic anhydrid

1991-03-25

1992-03-31

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528126, 528128, 528170, 528173, 528174, 528175, 528220, 528229, 5283291, 528310, 528350, 528353, 549241, C08G 6300, C08G 6926, C08G 802, C07D30789

Patent

active

051010062

ABSTRACT:
Novel halogenated polyimides and co-polyimides comprise recurring imide structural units of the formula ##STR1## where X is F, Cl, Br or I; Y is H, F, Cl, Br or I; and R is a divalent organic radical.

REFERENCES:
patent: 3879428 (1975-04-01), Heath et al.
patent: 4863640 (1989-09-01), Scola
patent: 5003031 (1991-03-01), Schwartz et al.
patent: 5003086 (1991-03-01), Stults et al.
patent: 5021168 (1991-06-01), Molinaro et al.

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