Patent ID: 7655706

Claim:
Polymethylmethacrylate bone cement comprising a liquid monomer component comprising methylmethacrylate and a powder component comprising polymethylmethacrylate, wherein A a dye/dye mixture that is insoluble or poorly soluble in methacrylic acid methylester and a synthetically produced, protein-free, hydrophobic, low molecular or oligomeric solubilizer for the dye or dye mixture are dissolved in the monomer liquid; B the monomer liquid, with said dye/dye mixture and solubilizer dissolved therein, is translucent at room temperature; C and a dye/dye mixture that is insoluble or poorly soluble in methacrylic acid methylester and a synthetically produced, protein-free, hydrophobic, low molecular or oligomeric solubilizer are homogeneously distributed in the polymethylmethacrylate of the powder component.