Title:GREEN PROCESS FOR OBTAINING SPECIFIC FRACTIONS OF KRAFT LIGNIN AND APPLICATIONS IN NANOTECHNOLOGY
Type of protection: Innovation Patent
Registration number: BR1020240201817
Registration institution: Instituto Nacional da Propriedade Industrial (National Institute of Industrial Property – INPI, Brazil)
Filing date: 29/09/2024
Assignees: Universidade Estadual Paulista (São Paulo State University – UNESP, Brazil) Universidade Federal de São Carlos (Federal University of São Carlos – UFSCar, Brazil)
Inventors:
- Dra. Jéssica S. Rodrigues – Universidade Estadual Paulista (UNESP – Sorocaba)
- Prof. Leonardo F. Fraceto – Universidade Estadual Paulista (UNESP – Sorocaba)
- Prof. Vagner R. Botaro – Universidade Federal de São Carlos (UFSCar)
- Dra. Marystela Ferreira – Universidade Federal de São Carlos (UFSCar)
- Dra. Amanda S. M. Freitas – Universidade Estadual Paulista (UNESP – Sorocaba)
Abstract: This invention presents an eco-friendly method for fractionating kraft lignin (KL) using acetic acid as a green solvent, yielding well-defined lignin fractions suitable for nanoparticle formation. The process enables control over particle size and surface chemistry, facilitating their use in agriculture, healthcare, and advanced materials. The valorization of lignin—a major by-product of the pulp and paper industry—supports circular-economy principles and provides a sustainable alternative to petroleum-derived materials.
Status: Filled
Contact: Prof. Leonardo Fernandes Fraceto (UNESP Sorocaba)
