Biocidal, particularly virucidal, compositions
OwnerThomas R. Auchinclossinventor
Life of this patent
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Abstract
A dry, water-soluble biocidal composition comprises (a) 0.01 to 5 parts by weight of water-soluble inorganic halide, (b) 25 to 60 parts by weight of an oxidizing agent which, in aqueous solution, reacts with the halide to generate hypohalite ions, (c) 3 to 8 parts by weight of sulfamic acid, (d) 0 to 20 parts by weight of a non-reducing organic acid, (e) 10 to 30 parts by weight of an anhydrous alkali metal phosphate, the parts by weight of the composition totaling 100, the pH of a 1% by weight aqueous solution of the composition being between 1.2 and 5.5, and the composition being characterized by lack of evolution of halogen at a pH less than 3.0 and a biocidal activity substantially greater than that produced by like compositions having inorganic halide concentrations greater than about 20%.
Claims10
A dry, water-soluble biocidal composition comprising:
- (a) 0.01 to 5 parts by weight of water-soluble inorganic halide,
- (b) 25 to 60 parts by weight of an oxidizing agent which, in aqueous solution, reacts with the halide to generate hypohalite ions,
- (c) 3 to 8 parts by weight of sulfamic acid,
- (d) 0 to 20 parts by weight of a non-reducing organic acid,
- (e) 10 to 30 parts by weight of an anhydrous alkali metal phosphate,
- the parts by weight of the composition totaling 100,
- the pH of a 1% by weight aqueous solution of the composition being between 1.2 and 5.5, and
- said composition being characterized by lack of evolution of halogen at a pH less than 3.0 and a biocidal activity substantially greater than that produced by like compositions having inorganic halide concentrations greater than about 20%.
A dry, water-slouble biocidal composition comprising:
- (a) 1.5 parts by weight of sodium chloride,
- (b) 50 parts by weight of potassium persulfate triple salt,
- (c) 10 parts by weight of sulfamic acid,
- (d) 5 parts by weight of malic or succinic acid,
- (e) 18.5 parts by weight of sodium polyphosphate, and metal phosphate,
- (f) 15 parts by weight of sodium dodecylbenzene sulfonate,
- the parts by weight of the composition totaling 100,
- the pH of a 1% by weight aqueous solution of the composition being about 2.4, and
- said composition being characterized by lack of evolution of halogen at a pH of 2.4 and a biocidal activity substantially greater than that produced by like compositions having sodium chloride concentrations greater than about 20%.
Dependencies are inferred from the claim text.