发明名称 |
MANUFACTURE OF PAPER AND PAPER BOARD |
摘要 |
Process for making paper or paper board comprising, forming an aqueous cellulosic suspension, adding a retention system to the cellulosic suspensio n, draining the suspension on a screen to form a sheet and drying the sheet, wherein the retention system comprises a swelling clay which has a TAPPI brightness of at least 70.
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申请公布号 |
CA2449897(A1) |
申请公布日期 |
2003.01.03 |
申请号 |
CA20022449897 |
申请日期 |
2002.06.18 |
申请人 |
CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED |
发明人 |
WILLIAMS, STEPHANIE CAINE;CHEN, GORDON CHENG |
分类号 |
D21F11/00;D21H17/00;D21H17/67;D21H17/68;D21H21/10;(IPC1-7):D21H17/68 |
主分类号 |
D21F11/00 |
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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