发明名称 |
Particulate composition containing bleach and an optical brightener and process for its manufacture. |
摘要 |
<p>A manufacturing process and composition is claimed for a composition of matter comprising sodium carbonate, sodium carbonate perhydrate, a fluorescent whitening agent and a diphosphonic acid. The process comprises incorporating the fluorescent whitening agent and diphosphonic acid into aqueous hydrogen peroxide, uniformly applying the hydrogen peroxide solution to particulate sodium carbonate to form a reaction mixture, urging water vapor from the surface of the reaction mixture and maintaining the temperature of the reaction mixture between about 35 DEG C and 80 DEG C.</p> |
申请公布号 |
EP0368100(A2) |
申请公布日期 |
1990.05.16 |
申请号 |
EP19890120003 |
申请日期 |
1989.10.27 |
申请人 |
FMC CORPORATION |
发明人 |
CROSBY, JOHN;RICHARDS, JOSEPH CHARLES |
分类号 |
C11D7/54;C01B15/10;C11D3/39;C11D3/42 |
主分类号 |
C11D7/54 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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