Hydroxy and di-hydroxy end-capped polybutadiene as reactive steric stabilizers for the synthesis of polyurethane particles in organic dispersant media

Bindushree Radhakrishnan (1) , Goretti Balerdi (1) , Eric Cloutet (1, 2) , Henri Cramail (1, 3)

1 LCPO - Laboratoire de Chimie des polymères organiques
2 Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
3 Team 2 LCPO : Biopolymers & Bio-sourced Polymers

The synthesis of polyurethane particles by polyaddition of ethylene glycol (EG) and tolylene-2,4-diisocyanate (TDI) in cyclohexane at 60 degrees C was investigated in the presence of omega-hydroxy and omega,omega'-dihydroxy polybutadiene, used as reactive steric stabilizers. The effect of the functionality and concentration of the reactive polybutadiene, as well as the monomer addition procedure, onto the polyurethane particle formation was studied. Calibrated PUR particles with an average diameter in the range 1-2 mu m could be readily obtained.

Mots clés: macromonomers; particles; polyaddition; polybutadiene; polyurethanes

Domaines: Polymères

Bindushree Radhakrishnan, Goretti Balerdi, Eric Cloutet, Henri Cramail. Hydroxy and di-hydroxy end-capped polybutadiene as reactive steric stabilizers for the synthesis of polyurethane particles in organic dispersant media. Macromolecular Symposia, 2005, 229, pp.56-65. ⟨10.1002/masy.200551107⟩. ⟨hal-00393821⟩