Compositions – Compositions containing a single chemical reactant or plural... – Organic reactant
Patent
1987-05-12
1988-10-18
Willis, Prince E.
Compositions
Compositions containing a single chemical reactant or plural...
Organic reactant
252142, C11D 708, C11D 710
Patent
active
047786175
ABSTRACT:
An acid cleaner composition to remove deposits capable of reacting with the acid and also forming thereby hydrogen sulfide, comprising from about 5 to 95% by weight of an acid having an ionization constant of at least about 1.75.times.10.sup.-5, and an effective amount of a hydrogen sulfide scavenger agent providing a cation reactive with hydrogen sulfide to form a water-insoluble sulfide, whereby a substantial portion of the hydrogen sulfide is converted to said insoluble sulfide. The cations include Cu.sup.+2, Pb.sup.+2, Cd.sup.+2, Sb.sup.+3, and Sn.sup.+4, while typical acids are sulfuric, sulfamic, and oxalic. Preferred ranges, for a drain cleaner composition, are from about 40 to about 95% acid by weight, and from 2 to about 10% scavenger agent by weight. The compositions may be in solid form, or as an aqueous solution, containing preferably from 2 to 80% water. Corrosion inhibitors and carbon dioxide generating agents may be included. In a particularly preferred embodiment, ammonium chloride may be incorporated in an amount of from 0.1 to 10% by weight.
REFERENCES:
patent: 1371584 (1921-03-01), Urruty
patent: 2497057 (1950-02-01), Pape
patent: 2746849 (1956-05-01), Helling et al.
patent: 2796334 (1957-06-01), Robinson
patent: 2908557 (1959-10-01), Black et al.
patent: 2978366 (1961-04-01), Harwig et al.
patent: 3353995 (1967-11-01), Teumac
patent: 3507795 (1970-04-01), Gardner
patent: 3538008 (1970-11-01), Ancel et al.
patent: 3740331 (1973-06-01), Anderson et al.
patent: 3925229 (1975-12-01), Bolsing
patent: 4014804 (1977-03-01), Anderson
patent: 4096873 (1978-06-01), Vlahakis
patent: 4220550 (1980-09-01), Frenier et al.
patent: 4425185 (1984-01-01), Fishter et al.
Shaer Elias H.
Zembrodt Anthony R.
The Drackett Company
Willis Prince E.
Zeller Charles J.
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