Method and composition to inhibit staining of porcelain surfaces

Details Method and composition to inhibit staining of porcelain surfaces Method and composition to inhibit staining of porcelain surfaces

1979-04-09

1981-11-24

Weinblatt, Mayer

Compositions

Water-softening or purifying or scale-inhibiting agents

210698, 4227, 4228, 134 3, 134 38, 252 95, 252180, C11D 337

Patent

active

043023509

ABSTRACT:
Method and composition to inhibit the staining of water-contacting surfaces, such as those in a toilet bowl, which is caused by manganese present in household water in the presence of an oxidizing material. Manganese staining is inhibited by supplying to the water 0.1 to 10 ppm of a partially hydrolyzed polyacrylamide material. Compositions are also described in the context of an automatic toilet tank dispenser which provides sufficient quantities of the above materials in solution to inhibit manganese staining of toilet bowl surfaces.

REFERENCES:
patent: 3405060 (1968-10-01), Carter et al.
patent: 3518204 (1970-06-01), Hansen et al.
patent: 3700599 (1972-10-01), Mizuno et al.
patent: 3852213 (1974-12-01), Cooney
patent: 3941562 (1976-03-01), Hollingshad
patent: 3948867 (1976-04-01), Bader et al.
patent: 4064572 (1977-12-01), Wicks et al.
patent: 4087360 (1978-05-01), Faust et al.
patent: 4168230 (1979-09-01), Farley
patent: 4175100 (1979-11-01), Schiller et al.

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