Patent ID: 6218349
Filing Date: 2001-04-17
Classification: C11D

Abstract:
A composition suitable for removing proteinaceous material comprising water, an emulsifier, a chelating agent, one or more mineral acids, and a surfactant; wherein:the emulsifier is a polyether nonionic emulsifier or an amine oxide;the chelating agent is an alkylaminophosphonic acid, a hydroxyalkylphosphonic acid, or an alkylphosphonic acid carboxylic acid;the one or more mineral acids are present in an amount such that the pH of the composition is less than about 4.5; andthe surfactant is a compound of formula (I): ##STR7##whereinR.sup.1, R.sup.2, and R.sup.3 are independently (C.sub.1 -C.sub.6)alkyl, wherein any alkyl group can be substituted with one or more (C.sub.1 -C.sub.6)alkoxy or hydroxy;R .sup.4 is--[R.sup.5 --O].sub.q --Hor--[R.sup.6 --O].sub.q --[R.sup.7 --O].sub.r --HwhereinR.sup.5 and R.sup.6 are independently (C.sub.1 -C.sub.6)alkylene wherein any alkylene group can be substituted with one or more (C.sub.1 -C.sub.6)alkoxy or hydroxy;R.sup.7 is (C.sub.1 -C.sub.6)alkylene wherein the alkylene group can be substituted with one or more (C.sub.1 -C.sub.6)alkoxy or hydroxy;q has an average value between about 1 and about 100;r has an average value between about 1 and about 100; andX is halo, RCOO.sup.-, PO.sub.4.sup.2- or SO.sub.4.sup.2- wherein R is (C.sub.1 -C.sub.6)alkyl.