多官能性モノマーの合成と物性について : (第2報)2, 2-bis(4-methacryloxy cyclohexyl)propane共重合体の理工学的性質 Synthesis and Physical Properties of Polyfunctional Methacrylates : Part II.Physical Properties of 2, 2-bis(4-Methacryloxy cyclohexyl)Propane and Methyl Methacrylate Copolymers

新しい結晶性メタクリレートモノマー2.2-bis(4-methacryloxy cyclohexyl)propane(MCP)をメタクリル酸クロライドと2, 2-bis(4-hydroxy cyclohexyl)propaneとから合成し, MMA共重合体におけるMCP濃度の物性との相関を検討した.比較のため9mol%のSDMA, BPDMA-MMA共重合体の物性を測定した.結果は, MCPは濃度によってMMA共重合体の吸水率に変化を与えず, また, 圧縮強さやビッカース硬さは, MCPの濃度が増加すると向上し, その値はSDMAやBPDMA-MMA共重合体と同等ないしは上まわる値を示していた.

A new crystalline dimethacrylate monomer, 2, 2-bis(4-methacryloxy cyclohexyl)propane(MCP), was prepared from methacryloyl chloride and 2, 2-bis(4-hydroxy cyclohexyl)propane.And the effect of variation of the concentration of the synthesized monomer-MMA copolymer on the physical properties(water sorption, compressive strength and Vickers hardness)were investigated.In addition, SDMA(9mol%)-MMA and BPDMA(9mol%)-MMA copolymers were prepared and their physical properties were measured.Amounts of water sorption were independent on the concentration of MCP, while compressive strength and Vickers hardness increased with increasing the concentration of MCP in the copolymers.Compressive strength and Vickers hardness of MCP(9mol%)-MMA copolymers were equal or higher than SDMA(9mol%)-MMA and BPDMA(9mol%)-MMA copolymers.