Tertiary amine functionalized polymer was prepared and employed as thermo-reversible crosslinker for acrylic rubber containing active chlorine (ACM) through reversible quaternization/de- quaternization between the tertiary amines and chlorine groups. Butyl acrylate/4-vinylpyridine copolymer crosslinker was synthesized through emulsion polymerization. The effect of the dosage of the crosslinker

thermo-compression temperature and time on the crosslinking degree and mechanical property of ACM was investigated. The reversibility of the crosslinked ACM was revealed by DSC

torque measurement during heating/cooling cycles and thermal re-processing of the crosslinked ACM. The tensile strength of BA-4-VP copolymer crosslinked ACM filled with carbon black could reach at 8. 5MPa. The crosslinked carbon black filled ACM rubber could be re-shaped through thermo- compression to obtain specimen with a larger tensile strength and a smaller elongation at break.