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

1981-08-11

Weinblatt, Mayer

Compositions

Electrolytes for electrical devices

25217423, 252180, 4227, 4228, 134 3, 134 13, 210701, C11D 3395, C11D 754

Patent

active

042833000

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 material in solution to inhibit manganese staining of toilet bowl surfaces.

REFERENCES:
patent: 3462365 (1969-08-01), Vogelsang, Jr.
patent: 3941562 (1976-03-01), Hollingshad
patent: 4087360 (1978-05-01), Faust et al.
patent: 4175100 (1979-11-01), Schiller
patent: 4229410 (1980-10-01), Kosti
Kirk-Othmer, Encyclopedia of Chemical Technology, 2nd Ed., vol. 22, 1970, p. 72.
E. I. du Pont de Nemours & Co., Electrochemicals Department Bulletin, "OXONE.RTM. Monopersulfate Compound", 1960, p. 3, col. 2, paragraph bridging pp. 3 & 4.

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