发明名称 |
Paper sizing composition. |
摘要 |
<p>Particulate solids comprising ketene dimers may be obtained by drying a conventional aqueous dispersion of the dimer to which a water dispersable encapsulating agent has been added. Preferably the encapsulating agent is a cationic starch and the solid is obtained by spray drying the emulsion under controlled conditions. The products retain their sizing properties even on prolonged storage.</p> |
申请公布号 |
EP0220941(A1) |
申请公布日期 |
1987.05.06 |
申请号 |
EP19860308244 |
申请日期 |
1986.10.23 |
申请人 |
ALBRIGHT & WILSON LIMITED |
发明人 |
SHEPHERD, DAVID WILLIAM;WATSON, LAWRENCE FORRESTER;JOHNSON, DAVID CHARLES |
分类号 |
D21H21/50;D21H17/03;D21H17/17;(IPC1-7):D21H3/02;B01J2/04 |
主分类号 |
D21H21/50 |
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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