Patent ID: 6894013

Claim:
A liquid dishwashing detergent composition suitable for use in hand dishwashing, said composition comprising: (a) a low molecular weight organic diamine having a pK1 and a pK2, wherein the pK1 and the pK2 of said diamine are both in the range of from 8.0 to 11.5; (b) an anionic surfactant; (c) an amphoteric surfactant, (d) an enzyme selected from the group consisting of cellulases, hemicellulases, peroxidases, proteases, gluco-amylases, lipases, cutinases, pectinases, xylanases, reductases, oxidases, phenoloxidases, lipoxygenases, ligninases, pullulanases, tannases, pentosanases, malanases, β-glucanases, arabinosidases, and mixtures thereof; and (e) a solvent selected from the group consisting of a diol, a polymeric glycol, and mixtures thereof, wherein said diol is represented by the formula: wherein n=0-3, R 7 =H, methyl or ethyl; and R 8 =H, methyl, ethyl, propyl, isopropyl, butyl and isobutyl; and wherein the polymeric glycol is represented by the formula: wherein PO represents a propylene oxide group and EO represents an ethylene oxide group and x+y is from 17 to 68, and x/(x+y) is from 0.25 to 1.0; wherein the pH (as measured as 10% aqueous solution) is from 5.0 to 12.5; and wherein the mole ratio of said anionic surfactant to said amphoteric surfactant to said diamine is from 100:40:1 to 9:0.5:1.