SINOMER® DDDMA (1,12-十二烷二醇二甲基丙烯酸酯 (DDDMA)) is a difunctional methacrylate monomer featuring a 12-carbon aliphatic spacer between two terminal methacrylate groups. This unique C12 hydrophobic backbone provides low viscosity, excellent flexibility, and enhanced molecular mobility, making it an ideal crosslinking comonomer for dental restorative composites, adhesives, and sealants.