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    • 10. 发明授权
    • Method and composition for bleaching laundry
    • 漂白衣物的方法和组成
    • US4810408A
    • 1989-03-07
    • US49130
    • 1987-05-12
    • Bernard DubreuxFrancoise Chosson
    • Bernard DubreuxFrancoise Chosson
    • D06L3/02C11D3/39C11D7/54C11D7/18
    • C11D3/3932
    • Bleaching of laundry using a peroxidized compound is carried out at a temperature of less than 70.degree. C. for less than 30 minutes in a bath which has a pH of 10.5 to 12.5 in the presence of 1.times.10.sup.-3 to 1.times.10.sup.-2 gram-atom of calcium or of barium per liter of bath and of a sequestrant for alkaline earth metal ions in a quantity equal or superior to that which corresponds to the sequestration of calcium or barium ions in solution in the bath; the calcium or the barium being introduced in the form of the oxide CaO or BaO; the hydroxide Ca(OH).sub.2 or Ba(OH).sub.2 ; or of a salt, the anion of which is inert towards hydrogen peroxide and which is accompanied by a quantity of sodium hydroxide equal to that required for the formation of calcium hydroxide or barium hydroxide.
    • 使用过氧化物的漂白洗涤剂在低于70℃的温度下,在1×10 -3至1×10 -2克原子的存在下,在pH为10.5至12.5的浴中进行少于30分钟 的钙或钡每升浴和碱土金属离子的螯合剂,其数量等于或高于对应于溶液中钙或钡离子螯合的量; 钙或钡以氧化物CaO或BaO的形式引入; 氢氧化物Ca(OH)2或Ba(OH)2; 或盐,其阴离子对过氧化氢是惰性的,并且伴随着一定量的与形成氢氧化钙或氢氧化钡所需氢氧化钠相同的盐。