Method of making a composition and the uses thereof in removing or dissolving a contaminant from an environment
View Patent ↗A composition which is effective in removing a wide variety of contaminants, such as organic compounds, from a wide variety of environments, such as printing systems, is provided. A process of preparing such composition includes contacting hydrogen peroxide, glycolic acid, and water. The process can additionally include contacting with one or more additional components such as isopropyl alcohol.
1. A process for producing a composition consisting of:
(a) selecting a hydrogen peroxide solution, wherein the hydrogen peroxide solution consists only of (1) hydrogen peroxide, water, and low solids water having less than 10 ppm dissolved solids; or (2) hydrogen peroxide, water, low solids water having less than 10 ppm dissolved solids, and isopropyl alcohol;
(b) preparing a glycolic acid solution by mixing a first solution with a low solids water, wherein
(i) the first solution is, glycolic acid, water, and optionally, isopropyl alcohol,
(ii) the low solids water has less than 10 ppm dissolved solids,
(iii) the weight percent of the glycolic acid in the glycolic acid solution is between 1% and 15% by weight, and
(iv) the glycolic acid solution consists only of (1) the glycolic acid, water, and the low solids water or (2) glycolic acid, water, the low solids water, and isopropyl alcohol; and
(c) mixing only the hydrogen peroxide solution and the glycolic acid solution to form the composition.
2. The method of claim 1 , wherein the weight percent of the glycolic acid in the glycolic acid solution is between 1% and 5%.
3. The method of claim 1 , wherein the ratio of the hydrogen peroxide solution with the glycolic acid solution is an amount such that weight ratio of the hydrogen peroxide in the hydrogen peroxide solution and the glycolic acid in the glycolic acid solution is between about 1:1 and 30:1.
4. The method of claim 1 , wherein the ratio of the hydrogen peroxide solution with the glycolic acid solution is an amount such that weight ratio of the hydrogen peroxide in the hydrogen peroxide solution and the glycolic acid in the glycolic acid solution is between about 2:1 and 6:1.
5. The method of claim 1 , wherein the weight percent of the hydrogen peroxide in the hydrogen peroxide solution is between 0.1 and 20%.
6. The method of claim 1 , wherein
(a) the hydrogen peroxide solution consists only of the hydrogen peroxide, water and the low solids water, and
(b) the glycolic acid solution consists only of the glycolic acid, water, and the low solids water.
7. The method of claim 1 , wherein
(a) the low solids water has less than 0.1 ppm dissolved solids.
8. The method of claim 1 , wherein
(a) the low solids water has less than 1 ppm dissolved solids; and
(b) the glycolic acid solution has 5% by weight glycolic acid.