#$%^&*AU2015201574A120151029.pdf#####Abstract Polymethylmethacrylate bone cement The invention proposes a two-component bone cement that comprises A) a paste as component A, comprising al) methylmethacrylate； a2) at least one methylmethacrylate5 soluble polymer having a number average molar mass of less than 500,000 Dalton； a3) at least one methylmethacrylate-insoluble particulate polymer having a particle size D50 of less than 50 pm； a4) at least one methylmethacrylate-soluble hydroperoxide； and a5) at least one methylmethacrylate-soluble tertiary amine； and B) a powder as component B, comprising b1) at least one particulate radiopaquer having a particle size D50 of less than 10 50 pm； b2) at least one methylmethacrylate-soluble heavy metal salt； and b3) at least one methylmethacrylate-soluble reducing agent. The mixing of paste A and powdered component B immediately generates a tack-free plastically deformable cement dough, without any waiting time, that self-cures by means of radical polymerisation.
