Diperoxyacid precursors and method

Details Diperoxyacid precursors and method Diperoxyacid precursors and method

C - Chemistry, Metallurgy

07

C

8/87, 134/5.4, 2

C07C 309/58 (2006.01) C11D 3/39 (2006.01) C11D 3/395 (2006.01) C11D 7/54 (2006.01)

Patent

CA 1305971

Abstract Novel sulfonated phenyl esters of dicarboxylic acids are useful as diperoxyacid precursors in bleaching and laundering applications when combined with a source of peroxide. These diperoxyacid precursors can be pro- duced by reacting a dicarboxylic acid, a phenol sul- fonate, and a lower alkyl acid anhydride in an alkyl hydrocarbon solvent and removing a carboxylic acid by- product through distillation. The diperoxyacid pre- cursors have the structure: Image wherein n is an integer from about 4 to about 18 and M is an alkali metal, an alkaline earth metal, or ammonium. The diperoxyacid precursors have a high perhydrolysis profile coupled with a relatively low-to-moderate hydro- lysis profile.

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