Opacification: solving the fundamental problems

This report describes some of the fundamental problems associated with the Opacification program in the Polaroid SX-70 photographic integral system. Phthalein dyes which at a pH of 14 absorbed over the visible spectrum, were stable in alkali for over a year, had pK a values above 13 and were immobil...

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Bibliographic Details
Published inDyes and pigments Vol. 11; no. 1; pp. 1 - 12
Main Author Simon, Myron S.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 1989
Elsevier
Subjects
Applied sciences
Chemical industry and chemicals
Dyes, pigments
Exact sciences and technology
Industrial chemicals
Color photography
Opacification
Stability
Photographic film
Basic solution
Triarylmethane dye
Phenols
Benzenic compound
Lactone
Visible spectrum
Condensed benzenic compound
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Summary:This report describes some of the fundamental problems associated with the Opacification program in the Polaroid SX-70 photographic integral system. Phthalein dyes which at a pH of 14 absorbed over the visible spectrum, were stable in alkali for over a year, had pK a values above 13 and were immobile in the photographic system were synthesized to solve these problems.
ISSN:0143-7208
1873-3743
DOI:10.1016/0143-7208(89)85021-1