| 发明名称 |
Thermomechanical digestion process for enhancing the brightness of cellulose pulp using bleachants |
| 摘要 |
The brightness of a thermomechanical pulp can be improved if a serial multiple blowdown technique is used and a bleachant is present at an effective concentration throughout the thermomechanical pulping process.
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| 申请公布号 |
US4689117(A) |
申请公布日期 |
1987.08.25 |
| 申请号 |
US19850772575 |
申请日期 |
1985.09.04 |
| 申请人 |
PROCESS EVALUATION AND DEVELOPMENT CORPORATION |
发明人 |
VILLAVICENCIO, EDUARDO J. |
| 分类号 |
D21B1/12;D21B1/16;D21B1/36;D21C3/22;D21C9/10;D21H11/10;(IPC1-7):D21C3/26 |
主分类号 |
D21B1/12 |
| 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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