Controlled synthesis of polyepichlorohydrin with pendant cyclic carbonate functions for isocyanate-free polyurethane networks

Anne-Laure Brocas (1) , Gabriel Cendejas (1) , Sylvain Caillol (2) , Alain Deffieux (1) , Stéphane Carlotti (1, 3)

1 LCPO - Laboratoire de Chimie des Polymères Organiques
2 ICGM ICMMM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
3 Team 1 LCPO : Polymerization Catalyses & Engineering

Poly(allyl glycidyl ether) and poly(allyl glycidyl etherco- epichlorohydrin) were prepared by monomer-activated anionic polymerization. Quantitative and controlled polymerization of allyl glycidyl ether (AGE) giving high molar mass polyether was achieved in a few hours at room temperature in toluene using tetraoctylammonium salt as initiator in presence of an excess of triisobutylaluminum ([i-Bu3Al]/[NOct4Br] ¼ 2 4). Following the same polymerization route, the copolymerization of AGE and epichlorohydrin yields in a living-like manner gradient-type copolymers with controlled molar masses. Chemical modification of the pendant allyl group into cyclic carbonate was then investigated and the corresponding polymers were used as precursors for the isocyanate-free synthesis of polyurethane networks in presence of a diamine. Formation of crosslinked materials was followed and characterized by infrared and differential scanning calorimetry.

Mots clés: anionic polymerization; isocyanate-free; monomer activation; polyepichlorohydrin; polyethers; polyurethanes

Domaines: Polymères

Anne-Laure Brocas, Gabriel Cendejas, Sylvain Caillol, Alain Deffieux, Stéphane Carlotti. Controlled synthesis of polyepichlorohydrin with pendant cyclic carbonate functions for isocyanate-free polyurethane networks. Journal of Polymer Science Part A: Polymer Chemistry, 2011, 49 (12), pp.2677-2684. ⟨10.1002/pola.24699⟩. ⟨hal-00591301⟩