发明名称 |
FINES RETENTION IN PAPERMAKING WITH AMINE FUNCTIONAL POLYMERS |
摘要 |
186PUS04673 Polyvinylaminals, optionally as the formed copolymer with polyvinyl hemiaminals, and polyvinyl acetals are added to a papermaking pulp slurry to improve the retention of fines in the final paper product. This polymer is provided by reacting a poly(vinylamine) which can be a homopolymer or a copolymer containing vinyl alcohol and vinyl amine units with a monoaldehyde. The aldehyde, such as butyraldehyde, modifies the structure of the polymer and increases its hydrophobicity. The use of these polymers in papermaking involving the recycle of waste papers provides notable advantages in fines retention because of the high level of fines which normally accompany such recycle paper waste. E://MLR//1864673.APL
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申请公布号 |
CA2087461(A1) |
申请公布日期 |
1993.07.25 |
申请号 |
CA19932087461 |
申请日期 |
1993.01.18 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
SMIGO, JOHN G.;PICKERING, TIMOTHY L.;NORDQUIST, ANDREW F.;PINSCHMIDT, ROBERT K., JR. |
分类号 |
D21H17/37;D21H11/14;D21H17/34;D21H21/10;(IPC1-7):D21H17/47 |
主分类号 |
D21H17/37 |
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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