Polymer thermally stable photosensitive

ABSTRACT A new class of photosensitive, thermally stable polymers containing photo-labile aromatic amide linkages has been prepared. These polymers can be used to provide lithographic relief images for printing, etch masks for microcircuit fabrication and as contrast media for optical information storage. 

Oxadiazole derivatives have been tested in the textile industry as antistatic agents for textile finishes,232,233 thermally stable polymers,82, 234,235 fluorescent whiteners,236 oil and water repellents on cotton and wool,237 and blue dyes for polyesters and polyamides.238 Oxadiazole merocyanine dyes have been patented as photosensitizers for silver halide emulsions.239... 

A significant drawback for the practical application of polystannanes is their air and moisture sensitivity. This is not so significant in the solid state but the materials are appreciably sensitive in solution. Nevertheless, the properties of these fascinating materials are under detailed scrutiny." The polymers are reasonably thermally stable up to ca. 270 °G, and polystannane 215 (R = y>-TuG6H4) yields tin metal, when heated under nitrogen to 400 °G, and tin oxides in air, with a decomposition onset at around 225 °G. Polystannanes are highly photosensitive and exhibit... 

Macdonald and C.G. Willson, Poly(N alkysl o nitroamides) A new class of thermally stable photosensitive polymers, in Polymer Materials for Electronic Applications, ACS Symposium Series 184, E.D. Feit and C. Wilkins, Jr., Eds., American Chemical Society, Washington, D.C., pp. 73 82 (1982). A. Reiser, Photoreactive Polymers The Science and Technology of Resists, p. 267, John Wiley Sons, Hoboken, NJ (1989). 

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