Modified alkanesulfonic acid and uses thereof
US12276067B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Feb 26, 2021 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | Jan 2, 2043 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C9/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibers and lignin; exposing said plant material requiring to a composition comprising: alkanesulfonic acid; and a peroxide, wherein said alkylsulfonic acid and peroxide are present in a molar ratio ranging 1:1 to 15:1 and the time of exposure is sufficient to remove substantially all of the lignin present on said plant material. Compositions capable of achieving delignification are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.