Drain opening method

Details Drain opening method Drain opening method

1976-04-13

1978-06-27

Weinblatt, Mayer

Cleaning and liquid contact with solids

Processes

Oils, grease, tar, or wax removal, by dissolving

134 3, 134 41, 252140, 252146, B08B 704, C23G 102

Patent

active

040968715

ABSTRACT:
Discovery of a critical solution temperature vs acid strength profile leads to an aqueous acid-type drain opener composition consisting essentially of a solution of between about 80.8% and 84.5% by weight sulfuric acid. The composition may also contain about 0.1-0.5% by weight corrosion inhibitors, and about 15.0-19.1% by weight of inert materials, including 10-19% water. The resulting drain opener composition is not only effective to dissolve typical drain-clogging materials, but very much safer to use than the conventional highly concentrated (about 93% by weight) sulfuric acid drain openers in terms of providing time-based safety factor against severe acid burns.

REFERENCES:
patent: 1809970 (1931-06-01), Holland et al.
patent: 3538008 (1970-11-01), Ancel et al.

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