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  • Measurement of Methyl Methacrylate During Joint Replacement Operations
    to the type of plastic-cement and the importance of sterile handling, the plastic-cement is produced during the operation by mixing the acrylate with the monomer methyl methacrylate (MMA). The measurements were made in the area around the surgeons face during 2 consecutive, traditional hip
  • Living anionic polymerization of methyl methacrylate
    Phosphazene (PZN) catalyst, PZN catalyst coexisting with a co-catalyst 1-. hydroxycyclohexyl phenyl ketone (Irgacure 184; IRG) and polymethylmethacrylate. (PMMA) (prepared by catalytic living anionic polymerization using the. PZN catalyst and IRG) have been observed for the first time by
  • Artificial Lens Hazing Root-Cause Analysis
    IOL are often implanted as a replacement for cataract-damaged lenses, or in some cases to change the optical power of the lens. These lenses were originally made from poly(methyl methacrylate) (PMMA) but are now often silicone and acrylic. The ideal material for this application is one that has
  • Benzoyl Peroxide Determination
    Benzoyl peroxide (BPO) is added to bone cement as a radical initiator for the methyl methacrylate monomer. BPO is highly reactive and degrades readily, with a temperature dependent half-life of one hour at 92 °C and one minute at 131 °C. The degradation products, benzoic acid and oxygen
  • Zirconium in Organic Applications (.pdf)
    , hydroxyacetic, lactic and methacrylic acids, urea, methyl methacrylate, rayon, and various alcohols and phenolic resins. The ability of zirconium to withstand high temperatures and concentrations coupled with the fact that the zirconium ions are colorless allows its use in dye manufacturing and other areas
  • Medical Device Link . Technology News
    A methyl-methacrylate copolymer that exhibits surprising clarity for a multiphase plastic also features impact resistance even at low temperatures and the capability to withstand EtO and gamma sterilization. Cyrolite, supplied by R ohm GmbH (Darmstadt, Germany), traditionally has been used
    . Acrylic polymer, derived from the monomer methyl methacrylate (MMA), was first developed more than 60 years ago. Since then, formulations have extended the material's performance range, resulting in varying levels of melt flow, impact resistance, colorability, gamma recovery, and other controlled
  • How to develop a soft touch
    . Royal Philips Electronics, the Dutch maker of the Philishave Coolskin electric shaver is the first to combine polycarbonate (PC) and a transparent ABS made from methyl methacrylate, acrylonitrile, butadiene, and styrene (MABS) using two-component injection molding. The PC housing is covered

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