Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1987-06-26
1989-08-29
Lieberman, Paul
Compositions
Water-softening or purifying or scale-inhibiting agents
252174, 252180, 252 90, 252DIG16, 4227, 4228, C11D 1700, C02F 510, E03D 902
Patent
active
048615110
ABSTRACT:
A composition suitable for cleaning and preventing the staining of toilet bowls is provided herein. This composition is made of low molecular weight water-soluble polyacrylate, a low molecular weight copolymer preferably a copolymer of an acrylamide and acrylic acid, and a binder. The composition may also optionally contain an inorganic salt, a surfactant, a dye and perfume. The composition is preferably in the form of a cake or pellet and added to the tank of a toilet so that the cleaning and stain-inhibiting ingredients are released into the toilet bowl upon each flush of the toilet. The invention also includes a method of cleaning and preventing the staining of a toilet bowl by the use of such composition.
REFERENCES:
patent: 4269723 (1981-05-01), Barford et al.
Kirschner Helene
Lieberman Paul
Nalco Chemical Company
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