发明名称 |
PAPER AND PAPER-LIKE PRODUCTS INCLUDING WATER INSOLUBLE FIBROUS CARBOXYALKYL CELLULOSE |
摘要 |
The invention relates to paper and similar products made with at least a portion of the papermaking furnish being essentially water insoluble carboxyethyl cellulose fibers. A cationic additive material, such as a polyamide epichlorohydrin wet strength resin or cationic starch, is also required. From 2-100 % of the modified fiber is used in conjunction with a usual papermaking fiber. The D.S. of the carboxyethylated fiber is in the range of about 0.01-0.3, preferably about 0.025-0.10. A notable feature of paper products made with the fiber/cationic additive system is an improved ratio of wet to dry tensile an d burst strengths compared with sheets made from unmodified fiber.
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申请公布号 |
CA2236415(C) |
申请公布日期 |
2004.01.06 |
申请号 |
CA19962236415 |
申请日期 |
1996.10.29 |
申请人 |
WEYERHAEUSER COMPANY |
发明人 |
PARK, DAVID W.;JEWELL, RICHARD A. |
分类号 |
D21H13/04;C08B11/12;D21C9/00;D21H11/20;D21H17/29;D21H17/52;D21H17/55;D21H17/56;(IPC1-7):D21H11/20 |
主分类号 |
D21H13/04 |
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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