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Photochemistry of polymeric systems. IV. Photocrosslinking of copolymers including pyridinium dicyanomethylide groups

✍ Scribed by Jean-;Jacques Cottart; Claude Loucheux; Alain Lablache-;Combier

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
426 KB
Volume
26
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Photocrosslinkable polymers were obtained by reacting tetracyanoethylene oxide with pyridine units of suitable copolymer. Copolymers of styrene and 4‐;vinylpyridine dicyanomethylide were synthetized and studied. The methods used for characterization of photocrosslinked films were a “photoresist test” or the measurement of the insolubilization ratio. The reaction is favored by triplet‐;state sensitizers such as Michler's ketone. The photosensitivity of the copolymers was determined as a function of the wavelength of the radiation used.

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