C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
134/3.11
C11D 3/075 (2006.01) C11D 1/72 (2006.01)
Patent
CA 1050380
AUTOMATIC DISHWASHING DETERGENT COMPOSITION Edward J. Maguire, Jr. ABSTRACT Bleach-free granular detergent compositions for use in automatic dishwashers comprising an alkoxylated nonionic surface-active agent, a sulfonated aromatic compatibilizing agent and a mixture of an alkali sulfite and an alkali sul- fate in a specific weight ratio. Preferred nonionic surfac- tants include ethoxylated nonionics and preferred compatibil- izing agents can be selected from xylene-, toluene-, cumene-, benzene-, trimethyl benezene-, ethylbenzene- and ethylmethyl benzenesulfonates. The sulfite-sulfate mixture is present in a weight ratio of sulfite to sulfate from about 1:4 to about 2:1. The instant compositions possess enhanced antiredepos- ition properties for soils composed of grease and grease- protein complexes and, in addition, exhibit improved cleaning properties particularly for burned-on soils.
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