The diluted sulfuric acid or making rare hydrochloric acid dissolve the refinement water

摘要

PROBLEM TO BE SOLVED: To obtain a cosmetic having an excellent stability, action to remove attached material and waste product and water-retaining action by using a monomer silica as a micelle-forming agent. ;SOLUTION: An aqueous solution of a monomer-silica having a concentration of about 1.2% is prepared e.g. by dissolving 4.2g of slag in 100mL of 1N sulfuric acid and separating the insoluble residue and the produced precipitate by filtration. The monomer-silica solution is added to water adjusted to pH≤4.2, the mixture is stirred to form micelle, the product is adjusted to neutral or weakly acidic state, especially to pH of about 6.0 to effect the agglomeration of materials existing in water (foreign material) and the agglomerated material is removed by filtration to obtain separated water. The water is used as a purified water for a cosmetic composed of purified water, glycerol and perfumery, etc. In the case of milky lotion or cream rich in oily component such as glycerol or squalene, the direct addition of the above oily component to the above monomer-silica aqueous solution forms micelle, which is converted into a sol or gel to form a water-containing colloidal product.;COPYRIGHT: (C)1998,JPO