| 摘要 |
PCT No. PCT/US96/05601 Sec. 371 Date Nov. 17, 1997 Sec. 102(e) Date Nov. 17, 1997 PCT Filed Apr. 19, 1996 PCT Pub. No. WO96/36559 PCT Pub. Date Nov. 21, 1996The present invention discloses a process for the manufacture of liquid aqueous bleaching compositions comprising hypochlorite, a strong source of alkalinity and water, said process comprising the steps of: mixing said alkali metal hypochlorite, said strong source of alkalinity and said water, adding a precipitating agent, or mixtures thereof; and thereafter separating the precipitates formed from said composition. The compositions provided by the process according the present invention are substantially free of heavy metal ions, thereby providing improved whiteness performance and/or fabric safety performance.
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