Methacrylated Calix[6]arenes as Low Shrinking Additives for Dental Restorative Composites
(937–943)Macromolecular Materials and Engineering 296 #10 (2011)
Moszner et al, Liechtenstein and Germany, acylated p-tert-Butylcalix arenes with different carboxylic acid anhydrides to improve their solubility in dimethacrylate cross-linkers.  An esterification of p-tert-butylcalixarene  with octanoic anhydride followed by methacrylation of the residual hydroxy groups with methacrylic anhydride resulted mainly in the formation of a pentaoctanoatemonomethacrylate. In the radical polymerization of methyl methacrylate the inhibition effect of residual hydroxy groups in  was evaluated.  This resulted in a significant decrease of the polymerization shrinkage, whereas the modulus of elasticity of the visible light cured composites was not affected.  (RDC 10/13/2011)