Patent ID: 9076920
Filing Date: 2015-07-07
Classification: C09K,C11D,H01L,Y02E,Y02P

Abstract:
1. An aqueous composition, comprising: a quaternary ammonium hydroxide; and at least one component selected from the group consisting of a water-soluble sulfonic acid or its water-soluble salt of formula I: a water-soluble phosphonic acid or its water-soluble salt of formula II: a water-soluble sulfuric acid ester or its water-soluble salt of formula III: a water-soluble phosphoric acid ester or its water-soluble salt of formula IV: a water-soluble phosphoric acid ester or its water-soluble salt of formula V: wherein the aqueous composition is alkaline; n=1 or 2; X is selected from the group consisting of a hydrogen, an alkaline metal and an alkaline-earth metal; R R is selected from the group consisting of an aliphatic moiety comprising 2 to 5 carbon atoms and an olefinically unsaturated double bond, a cycloaliphatic moiety comprising 4 to 6 carbon atoms and an olefinically unsaturated double bond, and an alkylaryl moiety, comprising an aryl moiety and an alkyl moiety, the aryl moiety is a benzene or a naphthalene, the alkyl moiety is a methylene, an ethane-diyl, or a propane-diyl, a phosphorus atom in formula II is bonded directly to an aliphatic carbon atom, a sulfur atom in formula III is bonded via an oxygen atom to an aliphatic carbon atom, a phosphorus atom in formula IV is bonded via an oxygen atom to an aliphatic carbon atom, and a phosphorous atom in formula V is bonded via an oxygen atom to an aliphatic carbon atom.