US 12,065,415 B2
Process for the production of a polybenzoxazine monomer
Romain Tavernier, Doullens (FR); Lérys Granado, Carcassonne (FR); Ghislain David, Montpellier (FR); Sylvain Caillol, Montpellier (FR); and Gabriel Foyer, Merignac (FR)
Assigned to ARIANEGROUP SAS, Les Mureaux (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
Appl. No. 17/437,315
Filed by ARIANEGROUP SAS, Paris (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
PCT Filed Mar. 10, 2020, PCT No. PCT/FR2020/050484
§ 371(c)(1), (2) Date Sep. 8, 2021,
PCT Pub. No. WO2020/188182, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 1902694 (FR), filed on Mar. 15, 2019.
Prior Publication US 2022/0177437 A1, Jun. 9, 2022
Int. Cl. C07D 265/16 (2006.01); B64G 99/00 (2009.01); C07D 413/06 (2006.01); C07D 413/14 (2006.01); C08G 73/02 (2006.01)
CPC C07D 265/16 (2013.01) [B64G 99/00 (2022.08); C07D 413/06 (2013.01); C07D 413/14 (2013.01); C08G 73/0233 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A process for manufacturing a polybenzoxazine monomer comprising condensing an amine of formula A with a polyaldehyde of formula B in order to obtain the polybenzoxazine monomer of formula C, formulas A, B and C being provided below:

OG Complex Work Unit Chemistry
in these formulas:
R1a is a substituted or unsubstituted furfuryl group or a substituted or unsubstituted benzyl group,
R2a is selected from: electron-withdrawing groups; saturated or unsaturated, substituted or unsubstituted, linear or branched hydrocarbon chains comprising between 1 and 6 carbon atoms, interrupted or not interrupted by one or more heteroatoms; saturated, unsaturated or aromatic, substituted or unsubstituted carbocyclic or heterocyclic groups;
na is an integer comprised between 0 and 2;
B1 is selected from: monocyclic or polycyclic, substituted or unsubstituted aromatic carbocyclic or aromatic heterocyclic groups; and
N1 is an integer greater than or equal to 2.