发明名称 |
Carbon dioxide in neutral and alkaline sizing processes. |
摘要 |
<p>In the non-acidic sizing of paper reaction between alkylketene dimer sizing agent and cellulose of cellulosic paper-making fibers is catalyzed by dissolving carbon dioxide in an aqueous vehicle of an aqueous pulp of the paper-making fibers; the carbon dioxide provides bicarbonate ions which catalyse the reaction; the bicarbonate ions may be generated by dissociation of the carbon dioxide in water, or by reaction of the carbon dioxide with calcium carbonate incorporated in the pulp as a filler for the paper, or with some other alkali present.</p> |
申请公布号 |
EP0572304(A1) |
申请公布日期 |
1993.12.01 |
申请号 |
EP19930401320 |
申请日期 |
1993.05.24 |
申请人 |
CANADIAN LIQUID AIR LTD L'AIR LIQUIDE CANADA LTEE |
发明人 |
HORNSEY, DEREK |
分类号 |
D21H17/67;D21H17/05;D21H17/17;D21H17/63;D21H21/16;(IPC1-7):D21H17/17 |
主分类号 |
D21H17/67 |
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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