Biocidal compositions and treatments
AssigneeRhodia Consumer Specialties Limited
InventorsChristopher Raymond Jones, Robert Eric Talbot
Life of this patent
Estimating the term…
Abstract
A synergistic biocide comprises a tris(hydroxymethyl)phosphine or a tetrakis (hydroxymethyl)phosphonium salt and at least one non-surfactant biopenetrant, such as a polymer or copolymer having a plurality of quaternary ammonium groups, a hydrotrope or a syntan, together optionally with a surfactant.
Claims6
A biocidally synergistic mixture comprising THP and at least one THP-compatible non-surfactant biopenetrant wherein said biopenetrant is a polymer or copolymer, having a plurality of quaternary ammonium groups, and the concentration of THP is from 10 to 75% by weight and the concentration of biopenetrant is from 0.1 to 10% by weight.
A method for treating aqueous systems to inhibit or destroy microbial contamination, which comprises adding thereto, together or separately, a biocidally synergistic amount of THP, at least one THP-compatible non-surfactant biopenetrant and, optionally, a surfactant, wherein said biopenetrant comprises a polymer or copolymer, having a plurality of quaternary ammonium groups and the concentration of THP is from 10 to 75% by weight and the concentration of biopenetrant is from 0.1 to 10% by weight.
Dependencies are inferred from the claim text.