Electrophotographic elements containing unsymmetrical squaraines

Details Electrophotographic elements containing unsymmetrical squaraines Electrophotographic elements containing unsymmetrical squaraines

1985-04-05

1986-08-19

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

430 58, 430 73, 430 74, G03G 506, G03G 514

Patent

active

046069860

ABSTRACT:
An unsymmetrical squaraine composition, process for synthesizing the unsymmetrical squaraine composition, devices containing the unsymmetrical squaraine composition, and methods of using the devices. The process for synthesizing the unsymmetrical squaraine composition comprises forming a mixture comprising squaric acid, a long chain primary alcohol, a first tertiary amine, and a second tertiary aromatic amine different from the first tertiary aromatic amine, and heating the mixture in vacuo below the boiling points of the primary alcohol, the first tertiary amine and the second tertiary aromatic amine to form an unsymmetrical squaraine composition. The novel unsymmetrical squaraine composition synthesized by this process may be used in electrostatographic imaging members comprising a supporting substrate and a photoconductive layer comprising the novel unsymmetrical squaraine composition. These electrostatographic imaging members may be utilized in an electrostatographic imaging processes.

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Loutfy et al. "Photoconductivity of Organic Particle Dispersions: Squaraine Dyes", Photographic Science and Engineering, vol. 27, No. 1, Jan./Feb. 1982, pp. 5-9.
White et al., J.A.C.S., 86, pp. 453-458, 2/1964.

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