Aldehyde modified cellulose pulp for the preparation of high strength paper products
US6695950B1 · kind B1 · utility
50Cited by
24References
11Claims
0Family size
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Key dates
| Filing date | Aug 14, 2000 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Apr 22, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Paper comprising aldehyde modified cellulose pulp having selected aldehyde content. Another embodiment involves a method of preparing celullose aldehydes using selective oxidation with a limited amount of oxidant and a nitroxyl radical mediator and defined reaction conditions to provide oxidized cellulose material with effective aldehyde content making it particularly suitable for use in making paper with desirable wet strength, temporary wet strength and dry strength properties, including compressive strength and resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.