E.i. Dupont De Nemours and Company

Steven C Freilich

Stephen Mazur

Rolf Dessauer

Richard J Kempf

This invention concerns a process for applying organic amino thiols to polyimide surfaces to improve the metal adhesion to such surfaces.

Process for adhering metal to polyimide film

High resolution, photosensitive electrostatic master which is positive-working with a single imagewise exposure comprising a conductive support bearing a layer of a photosensitive composition consisting essentially of (A) at least one polymeric binder, (B) a hexaarylbiimidazole photooxidant, (C) leuco dye, preferably stabilized, oxidized by (B), (D) a nonionic halogenated compound, preferably a hydrocarbon, and (E) compatible plasticizer. A process of making positive images by a single imagewise exposure is described. The master is useful in making proofs that duplicate the image achieved by printing, etc.

Photosensitive leuco dye containing electrostatic master with printout

Polyimide-electron donor charge transfer complexes, supported or unsupported, as photoconductive elements characterized by photoconductivities in excess of the sum of the individual photoconductivities of the polyimide and electron donor components.

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Wilmington, DE, United States of America

Steven C Freilich