| 发明名称 |
Method for reducing thermal and light-induced brightness reversion in lignin-containing pulps |
| 摘要 |
A method and article of manufacture thereof is provided for reducing brightness reversion in bleached lignin-containing pulps or newsprint by the treatment of the bleached lignin-containing pulp or newsprint with 2,5-dihydroxydioxane. In one embodiment, calcium carbonate is added to enhance the activity of 2,5-dihydroxydioxane.
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| 申请公布号 |
US5443634(A) |
申请公布日期 |
1995.08.22 |
| 申请号 |
US19940281824 |
申请日期 |
1994.07.28 |
| 申请人 |
THE RESEARCH FOUNDATION OF THE STATE UNIVERSITY OF NEW YORK;MINERALS TECHNOLOGIES INC. |
发明人 |
FRANCIS, RAYMOND C.;EVANS, DANIEL B. |
| 分类号 |
D21H19/10;D21C9/00;D21C9/10;D21H11/00;D21H17/00;D21H17/03;D21H17/05;D21H17/66;D21H23/04;D21H23/30;(IPC1-7):C09C1/02 |
主分类号 |
D21H19/10 |
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