Percarbonate stabilised by coating with an aqueous solution of phosphate and boron compounds

摘要

PCT No. PCT/GB93/02552 Sec. 371 Date Jun. 21, 1995 Sec. 102(e) Date Jun. 21, 1995 PCT Filed Dec. 15, 1993 PCT Pub. No. WO94/14702 PCT Pub. Date Jul. 7, 1994A process for stabilising percarbonate by coating with a coating agent. The percarbonate particles are treated with a concentrated aqueous solution containing at least one boron compound selected from the metal and ortho boric acids and at least one phosphate. Water is removed to provide the coated percarbonate particles which are useful in bleaching and washing compositions.