VISIOMER® Methacrylates for Medical Devices

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. 

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.