Use of nanocrystaline cellulose and polymer grafted nanocrystaline cellulose for increasing retention in papermaking process
US9410288B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Aug 8, 2013 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Aug 8, 2033 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/22
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention provides methods and compositions for improving the characteristics of paper substrates. The method involves adding to a paper substrate an NCC-polymer. NCC-polymers have unique chemical properties which result in improvements in wet strength, dry strength and drainage retention properties of the paper substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.