US 12,460,086 B2
Initiator molecule for a non linear absorption reaction, photopolymerisable composition that can be activated by biphotonic absorption and associated 3D printing method
Akos Banyasz, Lyons (FR); Cyrille Monnereau, Maubec (FR); Patrice Baldeck, Vizille (FR); and Caroline Arnoux, Lyons (FR)
Assigned to UNIVERSITE CLAUDE BERNARD LYON 1, Villeurbanne (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); and ECOLE NORMALE SUPERIEURE DE LYON, Lyons (FR)
Appl. No. 18/004,649
Filed by UNIVERSITE CLAUDE BERNARD LYON 1, Villeurbanne (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); and ECOLE NORMALE SUPERIEURE DE LYON, Lyons (FR)
PCT Filed Jul. 8, 2021, PCT No. PCT/EP2021/069034
§ 371(c)(1), (2) Date Jan. 6, 2023,
PCT Pub. No. WO2022/008673, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 2007303 (FR), filed on Jul. 9, 2020.
Prior Publication US 2023/0250296 A1, Aug. 10, 2023
Int. Cl. C09D 4/00 (2006.01); B29C 64/135 (2017.01); B29K 33/00 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C08F 2/50 (2006.01); C08F 222/10 (2006.01); C09D 7/63 (2018.01); C09D 135/02 (2006.01)
CPC C09D 4/00 (2013.01) [B29C 64/135 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C08F 2/50 (2013.01); C08F 222/1006 (2013.01); C08F 222/103 (2020.02); C09D 7/63 (2018.01); C09D 135/02 (2013.01); B29K 2033/08 (2013.01); B29K 2033/12 (2013.01); C08F 2800/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A polymerization initiator molecule, capable of being excited by two photons and of generating polymerization-initiating free radicals, the molecule comprising two branches and a halogen atom grafted onto a central phenyl nucleus respectively at positions 1, 3, and 5, each of the branches comprising an oligomer of oligophenyleneethynylenyl type or oligo-2,5-dihalogenphenyleneethynylenyl type.