Abstract: An epoxy resin is provided that is cross-linkable at room temperature, including the product of a reaction of a mixture including at least one epoxy function carrier derivative, chosen from the group consisting of non-polymeric, non-bio-sourced reagents and carriers of at least 3 epoxy end functions and biosourced, epoxidized lipidic derivatives, and at least one crosslinking agent, the ratio between the number of epoxy functions being kept constant independently of the composition of the mixture, the method for manufacturing same, and the use thereof in composite parts for the mechanical engineering or for building construction and in structural parts.

Abstract: Biosourced epoxide resins are provided, including the product of the reaction of one or more biosourced epoxide lipid derivatives with at least one cross-linking agent in the presence of at least one co-reagent selected from among the glycidyl ether derivatives of biosourced polyols or the product of the reaction of one or more glycidyl ether derivatives of biosourced polyols with at least one cross-linking agent.