COPOLYMERISATE MIT O-NITROCARBINOLESTERGRUPPIERUNGEN UND VERFAHREN ZUR HERSTELLUNG VON ZWEILAGENRESISTEN SOWIE VON HALBLEITERBAUELEMENTEN.

摘要

New copolymers (I) contain: (a) 5-50 (mole)% alpha-(o-nitro(het)aryl)-(ar)alkyl unsatd. carboxylate ester(s) of formula (II), where A = an opt. substd. 5-14 membered aromatic or hetero-aromatic ring system; X = H, 1-8C alkyl, opt. substd. aryl or aralkyl; Y = a 2-6C ethylenically unsatd. gp.; (b) 95-50% copolymerisable olefinically unsatd. organic cpd(s). (III) contg. Si; (c) 0-20% copolymerisable 3-6C olefinically unsatd. carboxylic acid(s) (IV) and (d) 0-25% other olefinically unsatd. organic comonomer(s) (V) forming homopolymers transparent at 250-400 nm, so that (I) have a Si content of over 6 wt.%. (II) can be prepd. by reacting the acid chloride with o-nitrocarbinols or by direct acid-catalysed esterification (see e.g. DE 2150691)