Soft contact lenses are made from highly developed hydrogels. Thanks to their special formulations containing Specialty Methacrylates, these lenses ensure a perfect balance between flexibility and water retention for improved comfort.
For the dental care market, we manurfacture Specialty Methacrylate monomers for artificial teeth and denture applications whose formulations which are characterized by minimized shrinkage and optimized performance. Our Specialty Methacrylates for advanced composite materials for dental applications guarantee reliability and effectiveness, whether for crowns, bridges, or fillings.
Vision Care
Soft contact lenses are hydrogels typically composed of hydroxyesters such as VISIOMER® UHP HEMA, crosslinkers like VISIOMER® EGDMA, VISIOMER® PEG 200 DMA and VISIOMER® TRGDMA and other comonomers to increase hydrophilicity.
VISIOMER® UHP HEMA (ultra-high-purity 2-hydroxyethyl methacrylate) enables the production of dimensionally stable soft contact lenses with high wear comfort. This is achieved by combining high oxygen permeability with high water uptake.
Our newest Specialty Methacrylate, VISIOMER® Terra Opti GMMA, is a partially bio-based monomer that adds superior product properties to contact lenses when used in lens formulations.
Low shrinkage, flexibility and increased water permeability all make VISIOMER® Terra Opti GMMA lenses significantly more comfortable for the user to wear.
Dental Care
VISIOMER® Specialty Methacrylates are also ideally suited for various dental applications: Artificial teeth and dentures are manufactured using the monomer/polymer method. Here, formulations typically contain a certain amount of multifunctional methacrylates, e.g. VISIOMER® EGDMA.
Composites for crowns and bridges, fillings and adhesives contain high molecular weight multifunctional methacrylates that show minimum shrinkage during polymerization, e.g. VISIOMER® HEMATMDI, as well as low-molecular-weight multifunctional methacrylates for viscosity adjustment, such as VISIOMER® TRGDMA.
Dental applications also require monomers that can be light cured. Due to its reactivity, VISIOMER® HEMATMDI is one of the methacrylate monomers that is specifically dedicated to this application.
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Dr. Philip Engel
Head of Segment Medical Systems Europe
