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AssigneeNone recorded
InventorsViktor Georgievich Ovchinnikov, Nadezhda Petrovna Noritsa, Maria Mefodievna Grib, Nikolai Alexandrovich Kamennov, Elena Konstantinovna Skvortsova
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A bactericide of the following composition, wt.%: 1,3-dichloro-5,5-dimethylhydantoin, 19-25 5,5-dimethylhydantoin, 10-19 Neutral sodium phosphates, 7-15 Sodium chloride and/or anhydrous sodium sulphate, 59-40 Alkylarylsulphonate and/or alkylsulphonate, 5-1. The proposed bactericide exhibits resistance to self-heating, is safe in manufacture and storage, and is highly soluble in water, allowing for an active chlorine concentration in water of 4,000 to 5,000 parts per million. The bactericide has a powerful effect on microorganisms: 5 to 15 minutes of exposure to the bactericide at a concentration of 0.005 percent by weight kills E. coli and Staphylococcus aureus. Its toxicity is low: LD.sub.50 = 2,000 to 3,000 mg/kg of weight for warm-blooded animals. The bactericide of the invention may find application for washing and disinfecting various surfaces.
A readily water soluble bactericide which is stable to self-heating upon manufacture and storage, said bactercide consisting essentially of 1, 3-dichloro-5,5-dimethylhydantoin in an amount of 19 to 25% by weight;
Dependencies are inferred from the claim text.
No related US applications are recorded in the indexed filing history.
Having rings with two nitrogen atoms as the only ring hetero atoms: 1,3-Diazoles; Hydrogenated 1,3-diazoles
Biocides, pest repellants or attractants, or plant growth regulators containing elements or
Preservation of bodies of humans or animals or plants or parts thereof
Term ended 15 Nov 1994 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to a bactericide on the basis of 1,3-dichloro-5,5-dimethylhydantoin.
The proposed bactericide may find application for washing and disinfecting various surfaces.
It is common knowledge to those skilled in the art that 1,3-dichloro-5,5-dimethylhydantoin (to be referred to hereinafter at DCDMH) containing about 72 percent active chlorine is a potent oxidizing and chlorinating agent widely employed as an effective bactericide, fungicide, sporicide and bleach distinguished by virtue of its high moisture resistance. DCDMH is slightly soluble in water (about 0.1 percent at 20.degree. C.). The low solubility of DCDMH makes it difficult to prepare process solutions and in some cases prevents attaining a desired concentration of DCDMH in process solutions, necessitating the use of higher temperatures at which the compound becomes more water-soluble and the rate of its dissolution rises (0.6 percent at 60.degree. C.). At higher temperatures, however, the vapour of the solution irritates the respiratory tract and the mucosa; furthermore, it is not always possible to prepare and use hot solutions, particularly for the purpose of general disinfection.
The invention will be further understood from the following exemplary embodiments thereof.
A bactericide of the following composition, wt.%:
1,3-dichloro-5,5-dimethylhydantoin, 22.1