Compositions – Electrolytes for electrical devices
Patent
1992-08-27
1994-01-25
Albrecht, Dennis L.
Compositions
Electrolytes for electrical devices
252 95, 252135, 25217414, 25217419, 25217424, 252DIG2, 252DIG11, C11D 337, C11D 712, C11D 714, C11D 756
Patent
active
052813525
ABSTRACT:
The present invention is based upon the discovery that a low-phosphate automatic dishwashing composition comprising from about 2.0 to 50.0 percent by weight of alkali metal carbonate salts such that it contains a weight ratio of about 1:1 to 20:1 carbonate to bicarbonate, from about 2.0 to 60.0 percent by weight of a water-soluble organic complexing agent comprising one or more hydroxycarboxylic acids or the salts thereof, a sufficient amount of an alkaline condensed phosphate salt to provide from about 0.1 to 1.7 percent by weight of (P.sub.2 O.sub.5) ion, from about 0.5 to 8.0 percent by weight of about a 2:1 to a 6:1 blend of an acrylic polymer comprising a salt or ester of acrylic or methacrylic acid having a molecular weight of between about 1,000 to 25,000, with a copolymer of a substituted or unsubstituted maleic anhydride and lower olefin having a molecular weight of from about 1,000 to 50,000, and from about 0.5 to 8.0 percent by weight of a nonionic surfactant provides satisfactory cleaning without unacceptable spotting and filming and without the need to add a chlorinated agent.
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Brown Raymond S.
Savio Lenore E.
Albrecht Dennis L.
Barris Charles B.
Church & Dwight & Co., Inc.
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