Compositions – Electrolytes for electrical devices
Patent
1978-07-14
1980-11-18
Albrecht, Dennis L.
Compositions
Electrolytes for electrical devices
8137, 134 26, 134 27, 134 28, 252 92, 252134, 252142, 252156, 252174, 2521883R, 2065241, 2065247, C11D 708, C11D 712, C11D 1700, C11D 1704
Patent
active
042344425
ABSTRACT:
The present invention relates to a feed unit of a detergent composition containing one or more surfactants, an alkali carbonate, and an acid which forms water-soluble calcium salts and magnesium salts and/or complexes, and in which detergent composition the acidic constituent and the alkaline constituent are separately present, the acidic constituent having a higher rate of solubility in a wash liquor than the alkaline constituent, and the total amount of alkali being present in excess relative to the amount of acid.
The invention is characterized in that the feed unit comprises a sachet which entirely or partly consists of a material permeable to or disintegrating in water and is filled with the acidic and the alkaline constituent, the acidic constituent containing 5-30 percent by weight, calculated on the total amount of detergent composition, of an acid having a pK.sub.1 value in the range of 2.8 to 4.8.
It is preferred that the sachet should have 2 compartments, the acidic constituent being contained in the one compartment and the alkaline constituent in the other compartment.
REFERENCES:
patent: 2470851 (1949-05-01), Hermanson
patent: 2817606 (1957-12-01), Barrett
patent: 3042621 (1962-07-01), Kirschenbauer
patent: 3042622 (1962-07-01), Kirschenbauer
patent: 3300546 (1967-01-01), Baechtold
patent: 3528921 (1970-09-01), Gray
patent: 3634260 (1972-01-01), Pickin
patent: 3761415 (1973-09-01), Gould
patent: 3968048 (1976-07-01), Bolan
patent: 3997459 (1976-12-01), Bogie
patent: 4028262 (1977-06-01), Cheng
patent: 4093417 (1978-06-01), Heinlein
patent: 4155868 (1979-05-01), Kaplan
Akzo N.V.
Albrecht Dennis L.
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