Abstract
n-Butyl acrylate was telomerized with bis(4 amino phenyl)disulfide to yield liquid oligomers which had amino groups at each ends of the moleculer chain. The effects of molar ratio of bis (4 amino phenyl)disulfide to n-butyl acrylate on the yield and the molecular weight of the oligomer were investigated. The oligomers produced were brown liquids with a molecular weights of 1, 500-6, 500.
These amino-terminated n-butyl acrylate oligomers were then added during the preparation of polyurethane by the one-shot method, and the physical properties of the modified polyurethanes were examined. These oligomers improved remarkably the mechanical and thermal properties of the polyurethane elastomers. Thus, the oligomers may be useful as a reactive filler or a crosslinking agent which takes part in the crosslinking reaction of polyurethane.
