| http://www.w3.org/ns/prov#value | - Other preferred photosolubilisable materials for use as (C) are o-nitrophenyl acetals prepared from an o-nitrobenzaldehyde and a dihydric alcohol, polyesters of such acetals prepared by reaction of the acetals with a polycarboxylic acid or reactive derivative thereof such as an anhydride, and end-capped derivatives of such acetals prepared by reacting the acetals with a carboxylic acid or reactive
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