Polysaccharide derivative production method and lignin derivative production method
US12304973B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Mar 5, 2020 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Jul 2, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B3/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide a method for producing a polysaccharide derivative in which the use of a reagent such as an acid catalyst is not needed and a reaction can be smoothly progressed without causing any side reactions. A method for producing a polysaccharide derivative of the present invention includes a step of dissolving a raw material including a polysaccharide in at least one ionic liquid having an anion which is a non-carboxylate anion and reacting the raw material with an acyl group donor, a conjugate acid of the anion having a pKa of 4 or higher in vacuum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.