Photocurable polymers obtained from succinylosuccinic acid and maleic acid derivatives, processes for the preparation of the polymers, and use of the polymers
AssigneeCiba-Geigy Corporation
InventorsHans Batzer, Joel Sinnreich
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Abstract
Novel photo-crosslinkable polymers are obtained by reacting, and polycondensing, bis-(hydroxyalkyl) succinylosuccinates or bis-(hydroxycycloalkyl) succinylosuccinates with maleic anhydride, maleinimid or N-methylmaleinimid in a molar ratio of 1:1 to 1:2. The novel polymers are useful as photoresists, and the films consisting of the crosslinked polymers are useful as solvent-resistant membranes for reverse osmosis.
Claims9
An unsaturated, photo-crosslinkable polymer having a relative viscosity of 1.05 to 2.5, measured on a solution of 1 g of polymer in 100 ml of a solvent, consisting of equal parts of phenol and o-dichlorobenzene, at 30.degree. C., which polymer consists essentially of recurring structural units of the formula I ##STR4## in which X is linear or branched alkylene having 2 to 10 C atoms or a cycloaliphatic or cycloaliphatic-aliphatic radical having up to 15 C atoms, the two Y, independently of one another, are each a hydrogen atom or methyl, and Z is --O--, --NH-- or >N--CH.sub.3.
Dependencies are inferred from the claim text.