Abstract:
An aqueous developer solution contains, as a water-soluble basic compound, a compound of the general formula (I) ##STR1## where R.sup.1 to R.sup.5 are identical or different and are each H, OH, hydroxyalkyl, alkoxy or alkyl.It is suitable for developing positive-working photoresists.
Abstract:
The invention relates to a radiation-sensitive mixture essentially consisting of(a) a water-insoluble binder or binder mixture which is soluble in aqueous alkaline solutions,(b) a compound which upon irradiation forms a strong acid and(c) one or more organic compounds which inhibit the solubility of (a) in aqueous alkaline solutions,wherein the organic compound (c) is a .beta.-ketoacide ester.This radiation-sensitive mixture may be used to prepare photoresists.
Abstract:
Copolymers containing from 5 to 50 mol % of monomers having o-nitrocarbinol ester groups, from 94 to 30 mol % of methacrylonitrile, from 1 to 20 mol % of olefinically unsaturated copolymerizable carboxylic acid and from 0 to 30 mol % of other copolymerizable monomers as copolymerized units are useful for fabricating semiconductor components.
Abstract:
Copolymers containing from 5 to 50 mol % of monomers having o-nitrocarbinol ester groups, from 95 to 50 mol % of O-substituted p-hydroxystyrene and from 0 to 30 mol % of other copolymerizable monomers are useful for producing positive-working photoresists and light-sensitive coating materials.