Accession Number : AD0477954


Title :   INVESTIGATION OF THE PHOTOPOLYMERIZATION PROCESS.


Descriptive Note : Quarterly rept. no. 11, 14 Sep-13 Dec 65,


Corporate Author : GENERAL ANILINE AND FILM CORP BINGHAMTON N Y PHOTO AND REPRO DIV


Personal Author(s) : Cerwonka ,Edward ; Deutsch,Albert S.


Report Date : JAN 1966


Pagination or Media Count : 33


Abstract : Phenol sulphonphthalein and cyanine dyes were found to be sensitizers for zinc oxide photoconductive coatings. Coatings sensitized with Rose Bengal, Eosin Y, Bromophenol Blue and Bromocresol Green exhibited two photocurrent peaks, with a total exposure time of 3 to 4 seconds in the fastest systems. Higher photocurrents are produced in a system containing a monomer composition on a aluminum instead of only an aluminum sheet as counterelectrode. Sensitivity of the sandwich was doubled when zinc oxide coatings were sensitized with Rose Bengal and Bromophenol Blue. An imagewise resist is produced using sodium nitrate as the electrochemical catalyst, and zinc oxide as the photoconductor. Thinner photoconductive layers generally result in higher speed. Phosphorescent zinc cadmium sulfide did not show any photoconductivity, but a fluorescent variety of this phosphor was weakly photoconductive. Monomer concentration appears to have little or no effect on the speed of the sandwich. (Author)


Descriptors :   (*POLYMERIZATION, *PHOTOCHEMICAL REACTIONS), (*DYES, PHOTOCHEMICAL REACTIONS), PHOTOELECTRIC MATERIALS, PHOTOCONDUCTIVITY, COATINGS, PHOTOGRAPHIC MATERIALS, ZINC COMPOUNDS, OXIDES, CADMIUM COMPOUNDS, SULFIDES


Subject Categories : ORGANIC CHEMISTRY


Distribution Statement : APPROVED FOR PUBLIC RELEASE