Low-phosphate machine dishwashing detergents

Details Low-phosphate machine dishwashing detergents Low-phosphate machine dishwashing detergents

1991-10-11

1992-10-06

Lieberman, Paul

Compositions

Electrolytes for electrical devices

25217414, 25217423, 25217424, 252135, 252DIG2, C11D 310, C11D 337, C11D 3395, C11D

Patent

active

051529106

ABSTRACT:
The present invention is based upon the discovery that high levels of carbonate salts can be formulated with minor concentrations of phosphates (e.g., about 0.1 to 0.3 percent by weight as expressed as (P.sub.2 O.sub.5) together with low levels of a mixture of certain polycarboxylate homopolymers and copolymers (i.e., in combination, a total of about 0.5 to 8.0 percent by weight), and relatively high levels of nonionic surfactants in a dishwashing detergent formulation while providing satisfactory cleaning without unacceptable spotting and filming and without the need to add a chlorinating agent.

REFERENCES:
patent: 4187190 (1980-02-01), McLaughlin et al.
patent: 4379069 (1983-04-01), Rapisavda et al.
patent: 4673523 (1987-06-01), Smith et al.
patent: 4933101 (1990-06-01), Cilley et al.

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