| 发明名称 |
VAPOR PHASE POLYSULPHIDE LIQUID PULPING OF LIGNOCELLULOSIC MATERIALS |
| 摘要 |
Impregnating lignocellulosic material, previously saturated with water, in a first stage with an alkaline polysulphide cooking liquor, removing excess liquor, and then cooking the impregnated material in a second stage by rapidly heating with steam.
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| 申请公布号 |
US3664919(A) |
申请公布日期 |
1972.05.23 |
| 申请号 |
USD3664919 |
申请日期 |
1969.12.09 |
| 申请人 |
PULP AND PAPER RESEARCH INSTITUTE OF CANADA |
发明人 |
DAVID W. CLAYTON;ASAHI SAKAI |
| 分类号 |
D21C3/02;(IPC1-7):D21C3/26 |
主分类号 |
D21C3/02 |
| 代理机构 |
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