New Cationic Epoxy Comes with Heat-Only Curing Functionality

Press Release Summary:

  • Offers high bond strength to a variety of substrates including plastics, FR-4, and glass
  • Features lower water absorption in high-heat, humid environments
  • Curable with broad-spectrum UV/Visible light and/or with heat at 80-85°C in 20-35 minutes

Original Press Release:

Introducing MD® 250-CTH Cationic Epoxy for Medical Device Assembly

Flexible Curing Options with UV Light Only, Heat Only, or Light and Heat for Bonding Multiple Substrates

Torrington, Connecticut – October 21, 2020... Dymax Corporation expands its range of MD® Medical Device Adhesives with the introduction of MD® 250-CTH, a new cationic epoxy. It's formulated for manufacturers that require extremely low shrinkage for lens alignment and cementing of endoscope/microscope lenses, as well as for the positioning of camera/light modules within endoscope assemblies. The semi-opaque off-white color of the material provides some light blocking functionality for use around lighted camera components. The product's high modulus and durometer offer better stiffness and resistance to deformation that may interfere with positioning.

MD® 250-CTH is fully curable with broad-spectrum UV/Visible light at 365 nm, 385 nm, or 405 nm, and/or with heat at 80-85°C to enable low-temperature heat-cure in 20-35 minutes, compared to standard acrylated urethane heat-cure for 60 minutes at 110°C. The same cured physical properties are achievable when using light-cure, light and heat, or only heat. Dymax

MD® 250-CTH heat-only curing functionality is ideal for ensuring complete cure in true dark-shadow areas.

The epoxy has high bond strength to a variety of substrates including plastics, FR-4, and glass. MD® 250-CTH features lower water absorption for improved performance in accelerated aging and real-time storage conditions in high-heat, humid environments.

About Dymax Corporation
Dymax Corporation develops innovative rapid and light-curable materials, dispense equipment, and UV/LED light-curing systems. The company’s adhesives, coatings, and equipment are perfectly matched to work seamlessly with each other, providing design engineers with tools to dramatically improve manufacturing efficiencies. Major markets include aerospace and defense; medical device; and consumer and automotive electronics.

For additional information on Dymax, visit or contact us at 860-482-1010.

Beth Schivley
Global Director Marketing Communications
Dymax Corporation

Contact This Company Download Spec Sheet

More from Adhesives & Sealants

All Topics