Aqueous formulations of imidoalkanepercarboxylic acids

2:

• The formulation according to claim 1 prepared by grinding crystals of imidoalkanepercarboxylic acids in α form dispersed in an excess of water, in the presence of a nonionic surfactant;
• and cooling the liquid dispersion to a temperature below 30° C.

3:

• The formulation according to claim 1, wherein in the test of stability at 40° C. for seven days, the imidoalkanepercarboxylic acids, component A), show a loss of peroxide oxygen content of not more than 2% relative to the initial titre.

4:

• The formulation according to claim 1, wherein the imidoalkanepercarboxylic acids, component A), form stable solid α-crystals, and are converted into stable crystals of the β-crystal form, in aqueous medium, the crystals of β-crystal form having average dimensions of less than 30 microns, wherein the α-crystal form relative to the β-crystal form has a different x-ray spectral image and a shift of the absorption in the region 1697-1707 cm−1 in surface infrared spectroscopy towards higher frequencies, of the order of 8-10 cm−1.

5:

• The formulation according to claim 1, wherein the nonionic surfactant is selected from the group consisting essentially of ethoxylated, polyethoxylated, propoxylated or polypropoxylated nonionic surfactants or surfactants containing one or more propoxy repeating units and one or more ethoxy units.

6:

• The formulation according to claim 5, wherein the polyethoxylated or polypropoxylated nonionic surfactants have a number of ethoxy or propoxy repeating groups of less than or equal to 15;
• the nonionic surfactants containing propoxy and ethoxy units have a number of ethoxy groups of not more than 10 and a number of propoxy units of not more than 2.

7:

• The formulation according to claim 6, wherein the surfactants are ethoxylated surfactants.

8:

• The formulation according to claim 1, comprising additives for detergent and disinfecting formulations, dissolved in aqueous solution and/or dispersed in the suspension together with the imidoalkanepercarboxylic acids, component A).

9:

• The formulation according to claim 8, wherein the additives are selected from the group consisting of paraffins, phosphonic acids, hydroxylated carboxylic acids, dicarboxylic acids, co-adjuvants, phthalic acids, adipic acid, and mixtures thereof.

10:

• A process for obtaining the formulation of claim 1, comprising:
• grinding at a temperature of from 40° C. to 65° C. crystals of imidoalkanepercarboxylic acids in α form dispersed in an excess of water, the said excess being at least 2 parts by weight of water/1 part by weight of percarboxylic acid, in the presence of a nonionic surfactant;
• cooling the liquid dispersion to a temperature below 30° C. and optionally adding viscosifying additives.

11:

• The process according to claim 10, wherein the cooling occurs at a temperature not less than 4° C.

12:

• A method of using the formulation of claim 1 in bleaching and disinfecting applications.

13:

• The formulation according to claim 1, wherein the imidoalkaneperoxycarboxylic acid is ε-phthalimidoperoxyhexanoic acid.

14:

• The method of claim 12, wherein the component A) of the formulation is ε-phthalimidoperoxyhexanoic acid.