发明名称 |
Process for bleaching fibrous material by hydrogen peroxide |
摘要 |
A fibrous material is bleached by hydrogen peroxide in a weakly acidic state at a pH of 5-7, and then in a weakly alkaline state at a pH of 8.5-1.1 by adding an alkaline agent to the hydrogen peroxide by one whole charge or continuously after the bleaching in the weakly acidic state and utilizing the remaining hydrogen peroxide. The bleached fibrous material has a soft handling and a high whiteness, and no bleaching unevenness.
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申请公布号 |
US4378967(A) |
申请公布日期 |
1983.04.05 |
申请号 |
US19810306925 |
申请日期 |
1981.09.29 |
申请人 |
MITSUBISHI GAS CHEMICAL CO., INC. |
发明人 |
YOTSUYA, MINORU;MAE, KIYOSHI;JINNOUCHI, SEIKYU;OCHIAI, TOSHIO |
分类号 |
D06L3/02;D06L3/14;(IPC1-7):D06L3/04 |
主分类号 |
D06L3/02 |
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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