Paper comprising PIPD pulp and process for making same
US8137506B2 · kind B2 · utility
0Cited by
7References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 19, 2006 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Jun 26, 2029 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H25/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a paper comprising polypyridobisimidazole fibers, where the apparent density of the paper is from 0.1 to 0.5 g/cm3 and the tensile strength of the paper in N/cm is at least 0.00057X*Y, where X is the volume portion of polypyridobisimidazole in the total solids of the paper in % and Y is basis weight of the paper in g/m2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.