Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1992-12-21
1993-11-30
Martin, Roland
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430 59, 430 96, G03G 5047, G03G 5087
Patent
active
052664295
ABSTRACT:
An electrophotographic element comprises a polyester-imide that includes a dioxy component and a dicarbonyl component, one of which components contains an aromatic tetracarbonyldiimide group, and has the formula ##STR1## wherein Ar.sup.1 represents a tetravalent aromatic group having 6 to about 20 carbon atoms, R.sup.1 and R.sup.2 each independently represents an alkylene group having 2 to about 12 carbon atoms, L.sup.1 and L.sup.2 represent O or C.dbd.O; when L.sup.1 and L.sup.2 are O, Z.sup.1 and Z.sup.2 each independently represents an aromatic or aliphatic dicarbonyl group having about 4 to about 12 carbon atoms and Q represents an alkylenedioxy group having 2 to about 25 carbon atoms or ##STR2## wherein Ar.sup.2 represents a tetravalent aromatic group having 6 to about 20 carbon atoms that may be the same as or different from Ar.sup.1, R.sup.3 and R.sup.4 each independently represents an alkylene group having 2 to about 12 carbon atoms; and L.sup.3 and L.sup.4 are O; or when L.sup.1 and L.sup.2 are C.dbd.O, Z.sup.1 and Z.sup.2 each independently represent an alkylenedioxy group having 2 to about 25 carbon atoms and Q represents an aromatic or aliphatic dicarbonyl group having about 4 to about 12 carbon atoms or ##STR3## wherein Ar.sup.2, R.sup.3 and R.sup.4 are as defined above, and L.sup.3 and L.sup.4 are C.dbd.O; x represents the mole fraction of the dioxy or dicarbonyl component of the polyester-amide that contains the tetravalent aromatic group Ar.sup.1, and y represents the mole fraction of the dioxy or dicarbonyl component of the polyester-imide that contains Z.sup.1, wherein x is 0.05 to 1 and y is 0 to 0.95.
REFERENCES:
patent: 4668600 (1987-05-01), Lingnau
patent: 4687834 (1987-08-01), Bartmann et al.
patent: 4971873 (1990-11-01), Pavlisko et al.
patent: 4992349 (1991-02-01), Chen et al.
Kung Teh-Ming
Pavlisko Joseph A.
Sorriero Louis J.
Young Ralph H.
Eastman Kodak Company
Kiernan Ann B.
Martin Roland
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