Preparation of industrially important isocyanates and polyols from CO2 and molecular platforms obtained from biomass and their use in the synthesis of polyurethanes

• Grant number: 21/06549-0
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: October 01, 2021
• End date: December 31, 2024
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Organic Chemistry
• Principal Investigator: Antonio Carlos Bender Burtoloso
• Grantee: Jorge Andrés Mora Vargas
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Company: Universidade de São Paulo (USP). Escola Politécnica (EP)
• Associated research grant: 20/15230-5 - Research Centre for Greenhouse Gas Innovation - RCG2I, AP.PCPE

Abstract

Polyurethanes (PUs) are one of the most important types of polymeric materials due to their applications in different fields of industrial chemistry because of their properties. Their main way of obtaining it is trough polyaddition reaction of isocyanates and polyols. The isocyanate monomers that are used as starting material are synthesized from toxic phosgene, therefore, several greener synthetic routes are being developed. Here, we will propose the synthesis of new and known isocyanates substituting phosgene for carbon dioxide (CO2) as a renewable source of C=O and using primary amines, which can be obtained from important molecular platforms synthesized from biomass. In this step, several guanidines will be used as CO2 sequestrants and activators. These catalysts are an alternative to replace conventional catalysts based on transition metals, which are sometimes expensive. On the other hand, new and known polyols will be synthetized from molecular platforms obtained from biomass, such as, ethyl acetate, succinic and levulinic acids. Both, isocyanates and polyols will be used as starting materials for the synthesis of important PUs by polyaddition reaction. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

VARGAS, JORGE ANDRES MORA; BURTOLOSO, ANTONIO C. B.. CO₂-Based Carbamate Synthesis Utilizing Reusable Polymer-Supported DBU. CHEMSUSCHEM, v. N/A, p. 9-pg., 2023-09-27. (21/06549-0, 20/07147-0, 20/15230-5)