Peracetic acid compositions and process for obtaining these compositions
AssigneeInterox
InventorsJean-Claude Colery, Pierre Ledoux
Life of this patent
Estimating the term…
Abstract
Peracetic acid compositions containing at least one thickening agent and optionally a stabilizer chosen from sequestering agents, free-radical scavengers and mixtures containing two or more of these products. The preferred compositions are obtained by successively incorporating at least one stabilizer and then at least one thickening agent. These compositions are especially capable of being employed for the disinfection of large bulks which are difficult to immerse and of nonhorizontal surfaces, and for detergency or bleaching at low temperature.
Claims35
Peracetic acid compositions comprising a solution of peracetic acid, at least one thickening agent selected from the group consisting of polymers of acrylic monomers, copolymers of acrylic monomers, derivatives of polymers of acrylic monomers, derivatives of copolymers of acrylic monomers and mixtures thereof, the amount of the thickening agent being such that the fluidity of the compositions does not exceed a Matthis value of 25 cm/10 s, said fluidity remaining substantially constant after a 12 week storage, and further comprising at least one stabilizer selected from the group consisting of sequestering agents, free-radical scavengers and mixtures thereof.
A method for producing a peracetic acid composition, having such fluidity that Matthis value of the composition is not greater than about 25 cm/10 s, comprising:
- about 0.05 to about 10% by weight of at least one thickening agent selected form the group consisting of polymers of acrylic monomers, copolymers of acrylic monomers, polymers of derivatives of acrylic acid, copolymers of derivatives of acrylic acid an mixtures thereof;
- and
- at least one stabilizer selected from the group consisting of sequestering agents, free-radical scavengers and mixtures thereof;
- comprising initially adding to a solution of peracetic acid the stabilizer and, subsequently, adding to the solution the thickening agent, thereby producing the peracetic acid composition having a substantially constant fluidity after a 12 week storage.
Dependencies are inferred from the claim text.