发明名称 |
Paper manufacture with improved retention agents |
摘要 |
DISCLOSED is a process for the production of paper and paper-like products which comprises the step of incorporating in the pulp a retention agent comprising a polyalkylene oxide of molecular weight in excess of 1 million and a phenol- or naphthol-formaldehyde or -sulphur resin.
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申请公布号 |
US4070236(A) |
申请公布日期 |
1978.01.24 |
申请号 |
US19750630090 |
申请日期 |
1975.11.10 |
申请人 |
SANDOZ LTD. |
发明人 |
CARRARD, JEAN-PIERRE;PUMMER, HELMUT |
分类号 |
D21H17/47;D21H17/48;D21H17/58;(IPC1-7):D21D3/00 |
主分类号 |
D21H17/47 |
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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